Anthony Okala - IT Consultant & Software Engineer | Expert in RPA, Automation & Full-Stack Development

Professional Experience

Proven track record delivering exceptional results for industry leaders

Daimon Platform - Enterprise Microservices Platform

StartUp initiative 2025

Comprehensive microservices-based digital platform connecting customers with shoe repair businesses. Enterprise-grade project with 8 independent microservices, event-driven architecture, and production-ready infrastructure.

Key Achievements

Designed and implemented scalable microservices architecture with 8 independent services using domain-driven design, service mesh architecture, and database per service pattern
Built event-driven communication system using RabbitMQ 3.12 message queue with Pika and Aio-pika clients for high-throughput asynchronous service communication
Created unified API gateway using Nginx with routing, load balancing, SSL/TLS termination, rate limiting, and service discovery
Implemented full-stack applications: Next.js 16 web dashboard with React 19, React Native 0.81 mobile app with Expo, and comprehensive RESTful API
Developed 8 production-ready microservices in Python 3.x/FastAPI 0.109: User Service (JWT auth, RBAC), Order Service (lifecycle management), Payment Service (Stripe integration), Chat Service (WebSockets), Image Analysis Service (Vision AI), Analytics Service (TimescaleDB), Notification Service (multi-channel), Shipping Service (DHL/DPD)
Integrated 15+ third-party services: Stripe API (payment processing), SendGrid (email delivery), Firebase Cloud Messaging (push notifications), Vision AI API (image analysis), DHL/DPD APIs (shipping), with comprehensive error handling and retry logic
Set up comprehensive monitoring stack with Prometheus (metrics collection), Grafana (visualization dashboards), structured JSON logging, health checks, and Prometheus client integration
Implemented Docker containerization for all 8 services with optimized Dockerfiles, Docker Compose orchestration, and production-ready deployment configuration
Built CI/CD pipeline with GitLab CI including automated testing (pytest), security scanning (SAST, secret detection), Docker Compose validation, Nginx config validation, and infrastructure testing
Designed multi-database strategy: PostgreSQL 16 (per service with Alembic migrations), TimescaleDB (time-series analytics), Redis 7 (caching and real-time state), with proper data isolation
Implemented enterprise-grade security: JWT authentication with Python-JOSE, Bcrypt password hashing, security headers (XSS, CSRF protection), input validation with Pydantic 2.5, and secret management
Created real-time chat system using WebSockets with Redis for connection management, message persistence, channel management, and reliable message delivery
Developed time-series analytics service with TimescaleDB, RabbitMQ event consumption, business metrics calculation (revenue, orders, categories), data aggregation algorithms, and BI dashboards
Built User Service with JWT-based authentication, role-based access control (Customer/Business/Admin), password security with Bcrypt, and comprehensive profile management
Developed Payment Service with complete Stripe integration, multiple payment methods, transaction management, platform fee calculation (automated), webhook handling with retry logic, and refund management
Created Image Analysis Service with AI-powered analysis using Vision AI, image processing with Pillow, automated pricing engine, secure file upload management, and confidence scoring
Implemented Notification Service with multi-channel support (Email, Push, SMS), Jinja2 template engine, SendGrid integration, Firebase Cloud Messaging, event-driven triggers, and retry logic
Built Shipping Service with multi-carrier integration (DHL, DPD), rate calculation algorithms, PDF label generation with ReportLab, tracking management, and address validation
Developed frontend applications: Next.js 16 dashboard with TanStack Query, Recharts for data visualization, Tailwind CSS 4, and React Native mobile app with Expo Camera, Image Picker, and AsyncStorage
Achieved 100% Dockerized deployment, comprehensive test coverage with pytest, type safety with TypeScript 5, and production-ready infrastructure with horizontal scaling capabilities

Python FastAPI Next.js React Native TypeScript PostgreSQL RabbitMQ Docker Microservices Nginx Prometheus Grafana Stripe Redis TimescaleDB

LeitApp Platform - Immigration & Integration Platform

Own Initiative 2025

Enterprise-grade immigration and integration platform with 19+ microservices across multiple technology stacks. Supports immigrants in Germany with mentorship, document management, job marketplace, AI assistance, and community features.

Key Achievements

Designed and architected enterprise-grade microservices system with 19+ independent services across 4 programming languages (Python 3.11+, TypeScript/Node.js, Java, PHP) with cloud-native deployment readiness
Implemented hybrid technology stack optimized per service domain: Django 4.2.7 (Python services: Voice, AI, Analytics, Document, Translation), NestJS 10.x (TypeScript services: Payment, Communication, Activity Feed, Calendar, Task, API Gateway), Spring Boot (Java services: User, Auth, Authorization), Laravel (PHP services: Content, Job Marketplace, Mentorship)
Built comprehensive frontend application using Next.js 14 with React 18, TypeScript, Tailwind CSS, Radix UI components, React Query, Zustand state management, Framer Motion animations, and Playwright E2E testing
Developed AI-powered services: Conversational AI with GPT-4, intelligent recommendations engine, predictive analytics with scikit-learn, document understanding with NLP (spaCy, NLTK), and natural language processing
Created advanced voice processing service with Text-to-Speech (AWS Polly, Google Cloud TTS), Speech-to-Text (OpenAI Whisper), audio processing (librosa, noisereduce, pydub), FFmpeg integration, and multi-language voice support
Implemented multi-provider payment gateway with Stripe (credit/debit cards, Apple Pay, Google Pay), PayPal, Revolut, and Wise, including subscription management with proration, ZUGFeRD-compliant invoice generation, webhook processing with retry logic, and fraud detection
Built real-time communication system using WebSockets: Django Channels (Python), Socket.io (Node.js), video call integration, notification system, message history and search, and live updates
Designed secure document management system with AWS S3 storage, AI-powered document extraction, multi-language translation support (7 languages), secure file handling, and document processing pipelines
Implemented comprehensive translation services supporting 7 languages: German, English, Arabic, Turkish, Spanish, French, Polish with dynamic content localization and RTL support
Created comprehensive API Gateway for centralized routing, authentication, service orchestration, load balancing, and request/response transformation with 200+ API endpoints
Set up event-driven architecture with message queues: Celery (Python async tasks), Bull Queue (Node.js job processing), RabbitMQ/Kafka (message broker) for asynchronous processing and scalability
Implemented enterprise-grade security: JWT authentication across all services, GDPR/DSGVO compliance, PCI DSS considerations for payment processing, role-based access control, and comprehensive security architecture
Completed 3 complete SDLC phases: Phase 1 (Planning & Requirements Analysis), Phase 2 (Requirements Definition with 13 functional and 6 non-functional requirements), Phase 3 (Design & Architecture with complete technical design)
Achieved 100% requirements traceability from business needs to implementation with comprehensive documentation (50+ technical documents), Architecture Decision Records (ADRs), test strategy (unit, integration, E2E, performance, security), and quality assurance processes
Built Payment Service (NestJS) with multi-provider processing, subscription management, ZUGFeRD invoicing, webhook handling, and fraud detection
Developed Voice Service (Django) with AWS Polly and Google TTS integration, OpenAI Whisper for speech-to-text, audio processing and enhancement, real-time WebSocket updates, and multi-language support
Created AI Service (Django) with GPT-4 conversational AI, recommendations engine, predictive analytics, document understanding, and NLP capabilities
Implemented Communication Service (NestJS) with real-time messaging via WebSockets, video call integration, notification system, and message history
Designed database architecture with PostgreSQL 15+ (primary), Redis 7+ (caching and sessions), AWS S3 (file storage), with 100+ database tables and optimized query performance
Established development environment with code quality tools (ESLint, Prettier, Black, Flake8, MyPy), testing frameworks (Jest, Pytest, Playwright), API documentation (OpenAPI/Swagger), and Docker containerization

Python Django NestJS Spring Boot Laravel Next.js TypeScript PostgreSQL Redis AWS Docker Microservices AI/ML OpenAI Stripe WebSockets

Multipurpose Service Website - Cross-Platform Application

Own Initiative 2025

Production-ready, full-stack cross-platform application (iOS, Android, Web) with CMS, contact forms, GDPR compliance, and administrative controls. Single codebase supporting multiple platforms.

Key Achievements

Developed production-ready cross-platform application using React Native 0.81.5 with Expo 54.0.0, supporting iOS, Android, and Web from single codebase with native performance and platform-specific optimizations
Built comprehensive Content Management System (CMS) with database-driven content stored in SQLite, full admin interface with CRUD operations, service management (Household & Office categories), page content management, settings management, and contact information management
Implemented RESTful API backend using Express.js 4.21.1 with SQLite3 5.1.7 database, parameterized queries for SQL injection prevention, custom database abstraction layer, indexed queries for performance, and transaction support
Created enterprise-grade contact form system with comprehensive validation (Express Validator 7.2.0 for server-side, client-side validation), GDPR/DSGVO compliance with explicit privacy consent checkbox, email integration via Nodemailer 6.9.16 with SMTP, HTML email templates, and database logging
Designed complete GDPR/DSGVO-compliant legal pages including comprehensive Privacy Policy, Impressum (German TMG requirements), privacy consent component integration, structured legal content presentation, and privacy-first approach without cookie tracking
Implemented secure file upload system with Multer 1.4.5 for multipart/form-data handling, image validation (JPEG, PNG, GIF, WebP) with MIME type checking, 5MB size limits, unique filename generation, organized file storage, and database metadata tracking
Built responsive design system with mobile-first approach, custom responsive utilities with useResponsive hook, enterprise design tokens (colors, typography, spacing), breakpoint system (sm: 640px, md: 768px, lg: 1024px, xl: 1280px), and safe area handling for notched devices
Developed navigation system using Expo Router 6.0.15 with file-based routing, deep linking support via expo-linking 7.0.3, custom header components, and platform-specific navigation patterns
Implemented authentication system with bcrypt 5.1.1 password hashing, secure session management, admin access control, role-based permissions, and protected admin routes
Created comprehensive database architecture with well-structured normalized schema: Services, Page Content, Contact Info, Settings, Media, Admin Users with proper relationships, indexed queries, and database initialization scripts
Set up professional development environment with TypeScript 5.9.2 strict mode, Nodemon 3.1.9 for auto-restart, Concurrently 8.2.2 for multiple processes, environment variable management with dotenv, and modular file structure
Implemented comprehensive form validation using Express Validator 7.2.0 with input sanitization, XSS protection, SQL injection prevention, email validation, phone format checking, message length limits, and user-friendly error messages
Integrated additional features: expo-location 19.0.7 for location services, expo-web-browser 15.0.9 for in-app browser, CORS 2.8.5 configuration, and body parser 1.20.3 middleware

React Native Expo TypeScript Express.js SQLite Node.js Cross-Platform CMS GDPR Multer bcrypt Nodemailer

Logistics Marketplace MVP - Full-Stack Platform

Own Initiative 2025

Full-stack multilingual logistics marketplace platform connecting shippers with service providers (freelancers and small logistics companies). Features three-role system with shipment management, provider matching, booking, payment processing, and messaging.

Key Achievements

Developed full-stack TypeScript 5.1.3 application with NestJS 10.0.0 backend and React Native 0.81.5 frontend, ensuring 100% type safety across entire stack with zero runtime type errors
Implemented comprehensive multi-role system with Role-Based Access Control (RBAC): Shipper, Provider, and Admin roles with JWT authentication using Passport.js, custom guards, decorators, and role-specific dashboards
Built advanced provider matching algorithm with intelligent matching based on service areas, capacity filtering (weight, vehicle type), availability status checking, and 4 different rate calculation methods (per km, per shipment, weight-based, flat rate) with real-time cost estimation
Created comprehensive booking and payment system with automated booking creation, intelligent provider selection, 15% platform commission calculation (automated), multiple payment methods (card, mobile wallet, cash), provider earnings tracking, and complete payment history
Implemented complete multilingual support for 3 languages (English, Arabic, Kurdish) with full RTL layout support using i18next 23.7.0, automatic locale detection from device settings, language switching with persistent preferences, and all 24+ screens fully internationalized
Designed modular backend architecture with 9 feature modules: Auth, Users, Providers, Shipments, Bookings, Payments, Ratings, Messages, Admin with service layer pattern, dependency injection, and repository pattern using TypeORM
Built 7 normalized database entities with TypeORM 0.3.17: User, Provider, Shipment, Booking, Payment, Rating, Message with proper One-to-Many and Many-to-One relationships, automatic migration support, and database seeding script
Developed 30+ REST API endpoints with RESTful design, proper HTTP methods (GET, POST, PUT, DELETE), service layer pattern, dependency injection, error handling, and comprehensive request validation with class-validator
Created cross-platform mobile application with 24+ screens across all user roles, platform-specific optimizations (iOS, Android, Web), native navigation patterns (Stack, Tabs), responsive design with safe area handling, and React Native Reanimated animations
Implemented real-time features: shipment status tracking with location updates, in-app messaging system between users, live booking status updates, real-time provider availability management, and WebSocket integration
Built comprehensive admin dashboard with statistics, user management and verification system, provider verification workflow, commission tracking and reporting, booking and payment analytics, and dispute management interface
Designed database with normalized entities, TypeORM decorators for schema definition, proper relationships, automatic migration support, database seeding with dummy data, and transaction handling
Implemented authentication system with Passport.js JWT strategy, bcrypt 5.1.1 password hashing, token storage and refresh strategies, secure API communication, and route guards
Developed state management with React Context API for global state, Axios 1.6.0 with interceptors for API calls, AsyncStorage 2.2.0 for persistent local storage, and custom hooks for reusable logic
Created form handling and validation with comprehensive client and server-side validation, error handling patterns, loading states, and user feedback mechanisms

NestJS React Native TypeScript SQLite TypeORM i18n JWT Expo Passport.js bcrypt Axios AsyncStorage

Multipurpose Website - E-Commerce Platform

Own Initiative 2025

Production-ready, full-stack web application with e-commerce functionality, content management, user authentication, and administrative controls. Built with Next.js 14, TypeScript, Prisma, and NextAuth.js.

Key Achievements

Developed production-ready full-stack web application using Next.js 14 (App Router) with TypeScript 5.5, React 18.3, server-side rendering, API routes, and optimized performance
Implemented comprehensive e-commerce functionality: shopping cart with Zustand state management and localStorage persistence, product catalog with advanced filtering, complete order management system, inventory tracking, price calculations, and totals management
Built enterprise-grade user authentication system with NextAuth.js 4.24, JWT-based sessions with custom callbacks, role-based access control (User/Admin), protected routes with middleware, secure password storage with bcryptjs (10 rounds), and custom login/register pages
Created comprehensive admin Content Management System (CMS) with real-time statistics dashboard, product management with full CRUD operations, contact message management interface, user management capabilities, role-based admin access control, and optimistic UI updates
Designed robust database architecture using Prisma 5.19 ORM with SQLite (PostgreSQL-ready for production): User, Product, Order, Cart, ContactMessage, Page, Session, Account models with proper relationships, type-safe queries, and database migrations
Implemented advanced state management with Zustand 4.5 including localStorage persistence middleware, optimistic UI updates, type-safe cart operations, and efficient re-render optimization
Built comprehensive form handling system with React Hook Form 7.52 and Zod 3.23 validation for contact forms, product management, user registration, server-side validation, and user-friendly error messages
Developed responsive design with Tailwind CSS 3.4, mobile-first approach, modern UI components with Lucide React icons, accessible design patterns, and custom reusable component library
Implemented enterprise-grade security features: password hashing with bcryptjs (10 rounds), SQL injection prevention via Prisma ORM, XSS protection, CSRF protection, input validation with Zod, and security headers
Created RESTful API routes with proper error handling patterns, request validation, appropriate HTTP status codes (200, 400, 500), JSON response formatting, and comprehensive error messages
Set up professional development environment with TypeScript strict mode, ESLint configuration, path aliases (@/*), production-ready build configuration, and code quality tools
Implemented additional features: react-hot-toast for user-friendly notifications, clsx and tailwind-merge for conditional styling, and comprehensive error boundaries

Next.js TypeScript Prisma NextAuth.js Zustand Tailwind CSS E-commerce React Hook Form Zod bcryptjs JWT

Web & Mobile Platform - Corporate Website

Own Initiative 2025

Enterprise-grade corporate website with full legal compliance (DSG - Swiss Data Protection Act), responsive design, and advanced UX features. Built with Next.js 14, TypeScript, and modern web standards.

Key Achievements

Developed enterprise-grade corporate website using Next.js 14.0.4 (App Router) with TypeScript 5.3.3, React 18.2.0, server-side rendering, React Server Components, and optimized performance
Implemented comprehensive DSG-compliant cookie management system with granular consent management (Necessary, Analytics, Marketing categories), 365-day cookie preference persistence, dynamic script loading based on user consent, custom event system for consent updates, and full compliance with Swiss Data Protection Act (DSG)
Created complete legal documentation: comprehensive Impressum (legal notice) per DSG Art. 6 Abs. 1, detailed privacy policy (Datenschutzerklärung), GDPR/DSG-compliant data handling, and structured legal content presentation
Built performance-optimized application with React Server Components for reduced JavaScript bundle, SWC minification enabled, optimized build configuration, dynamic meta tags for SEO, semantic HTML structure, and fast initial page loads
Developed fully responsive design with mobile-first approach, smooth scroll animations using Intersection Observer API, accessible navigation with ARIA labels, keyboard navigation support, and optimized for Desktop, Tablet, and Mobile
Implemented modern UI/UX with professional design system, CSS Variables for centralized theme system (colors, spacing, typography), consistent spacing and typography, interactive forms with validation, and user feedback mechanisms
Created reusable component architecture: Header, Footer, CookieBanner, AnimateOnScroll components with modularity, clean code structure, component composition, and separation of concerns
Built multi-page website: Homepage with hero section and features, Products page, About Us, Contact with form validation, Impressum, Privacy Policy with semantic HTML5 structure and proper heading hierarchy
Designed advanced CSS architecture with centralized design tokens (colors, spacing, typography, shadows, border radius), CSS Grid and Flexbox layouts, modern CSS animations and transitions, gradient backgrounds, and visual effects
Implemented robust error handling with cookie parsing, consent management, user-friendly error messages, try-catch patterns, and graceful degradation
Set up professional development environment with TypeScript strict mode, ESLint 8.56.0 with Next.js ESLint config, Git version control, production build optimization, and comprehensive documentation
Integrated browser APIs: Intersection Observer API for scroll-triggered animations, Document Cookie API for cookie management and parsing, Custom Events API for event-driven architecture, and Local Storage concepts

Next.js TypeScript React CSS3 DSG Compliance SEO Intersection Observer Server Components ESLint

Women's Health NGO Website - Full-Stack Application

Own Initiative 2025

Production-ready, full-stack web application for a Women's Health NGO focused on breast cancer awareness in Adare, Ireland. Features complete content management system, interactive forms, dynamic routing, and enterprise-grade architecture.

Key Achievements

Developed production-ready full-stack web application using Next.js 14.2.33 (App Router) with TypeScript 5.3.3, React 18.2.0, server-side rendering, static site generation, automatic code splitting, and image optimization
Built comprehensive multi-page website architecture with 8+ pages: Home with hero section, Mission, Initiatives, Events with event listings, Blog System with dynamic posts, Donate with payment integration, Volunteer with application form, Contact with form validation, all with dynamic routing and SEO optimization
Created enterprise-grade blog system with dynamic blog post pages using [slug] routing, category-based organization, date formatting with date-fns 2.30.0, SEO-friendly URL structure, individual post pages, and blog listing with filtering
Implemented advanced form systems: Donation form with preset amounts, custom amount input, anonymous donation option, payment method selection; Volunteer application with multi-field collection, interest selection, availability dropdown, comprehensive validation, and database persistence
Developed 3 fully implemented API endpoints: /api/contact, /api/donate, /api/volunteer with comprehensive request validation, error handling, proper HTTP status codes (200, 400, 500), JSON response formatting, async/await patterns, and ready for third-party payment integrations
Built responsive navigation with desktop horizontal menu, mobile hamburger menu with animations, sticky navigation bar, smooth transitions, accessibility attributes (ARIA labels), keyboard navigation support, and focus indicators
Implemented comprehensive form management with React Hook Form 7.49.2, advanced validation, error handling with user-friendly messages, loading states during submission, success feedback with visual indicators, auto-reset functionality, and form state management
Created custom Tailwind CSS 3.4.0 configuration with primary/accent color palettes, custom font families, reusable component classes, typography scales, consistent spacing system, CSS layer architecture (@layer base, components, utilities), and PostCSS 8.4.32 processing
Designed comprehensive user experience features: loading states for form submissions, success messages with visual feedback, comprehensive error handling, smooth scroll behavior, hover effects, micro-interactions, and responsive design patterns
Implemented robust error handling: custom 404 page, API error responses with proper status codes, form validation errors with field-specific messages, user-friendly error messages, try-catch patterns, and graceful error recovery
Set up professional development environment with TypeScript strict mode, ESLint 8.56.0 with Next.js ESLint config, Autoprefixer 10.4.16, production-ready build configuration, and code quality tools
Ensured full accessibility (WCAG AA compliance): ARIA labels and roles, semantic HTML5 structure, keyboard navigation support, focus indicators, screen reader compatibility, proper heading hierarchy, and accessible form labels

Next.js TypeScript React Hook Form Tailwind CSS API Routes date-fns SEO Accessibility WCAG

Composer Portfolio Website - Multilingual Platform

Own Initiative 2025

Modern, multilingual portfolio website for a classical composer with internationalization (i18n), interactive music player, works catalog with filtering, and responsive design. Built with Next.js 14 and TypeScript.

Key Achievements

Developed modern multilingual portfolio website using Next.js 14.2.0 (App Router) with TypeScript 5.3.3, React 18.3.0, full internationalization support, and production-ready architecture
Implemented complete internationalization (i18n) with next-intl 3.26.5, bilingual support (German/English), middleware-based locale routing and detection, dynamic content localization, language switcher with smooth transitions, and 11+ pages fully internationalized
Built advanced interactive music player component with custom audio player using React hooks (useState, useEffect, useRef), comprehensive playlist management, progress tracking and seeking functionality, volume control and mute, auto-play capabilities, track navigation, and responsive design
Created comprehensive works catalog system with dynamic filtering by category (8+ categories: Orchestral, Chamber, Solo, Vocal, etc.), real-time search across titles/descriptions/instrumentation, memoized filtering with useMemo for performance, category-based navigation, and individual work detail pages with dynamic routing
Developed 11+ fully functional pages: Biography, Works with catalog, News, Discography, Press, Media, Contact, Listen with music player, Scores, Versus Vox, with dynamic routing, static generation using generateStaticParams, and optimized routing
Implemented advanced Next.js App Router architecture with dynamic routes ([locale], [id]), server and client components optimization, static site generation (SSG), metadata API for SEO, and optimized routing patterns
Built responsive and accessible design with mobile-first layout, ARIA labels and roles, semantic HTML structure, keyboard navigation support, custom scrollbar styling, focus indicators, and screen reader compatibility
Created modern UI/UX features: smooth page transitions with Framer Motion 11.0.0, animated navigation indicators, backdrop blur effects, gradient backgrounds, hover states and micro-interactions, mobile hamburger menu with animations, and modern design patterns
Implemented comprehensive performance optimizations: Next.js image optimization, code splitting and lazy loading, optimized bundle size, efficient re-renders with React hooks (useMemo, useCallback), and production build optimization
Designed type-safe development with TypeScript interfaces for all data structures, strict type checking enabled, type-safe component props, centralized type definitions, generic types, and type inference
Set up professional development environment with TypeScript strict mode, ESLint 8.56.0 with Next.js ESLint config, modern build optimization, PostCSS 8.4.33, Autoprefixer 10.4.17, and code quality tools
Created comprehensive custom design system with Tailwind CSS 3.4.1, custom theme configuration, primary/accent color palette, typography scales, animations, CSS Grid and Flexbox layouts, and consistent design tokens
Integrated additional libraries: Lucide React 0.344.0 for icons, clsx 2.1.0 for conditional classes, tailwind-merge 2.2.0 for class merging, and date-fns for date manipulation

Next.js TypeScript next-intl Framer Motion Tailwind CSS i18n React Hooks Audio API SEO

Driver Order Optimizer - Vehicle Driver Planning System

Own Initiative 2025

Full-stack application for optimizing order management and daily planning for vehicle drivers (Fahrzeugüberführer). The system integrates with Google Maps API for routing calculations and provides an interactive dashboard for plan visualization, route planning, and order management.

Key Achievements

Designed and developed a full-stack application using Next.js (App Router) and Express.js with TypeScript for type-safe development across frontend and backend
Implemented RESTful API endpoints for order management and interactive plan building with route calculations and travel segment estimates
Built Material UI dashboard with Next.js for interactive visualization of plans, order management, route calculations, and plan storage with level-based organization
Integrated Google Maps API (Routes API, Distance Matrix, Geocoding) for driving and transit route calculations with intelligent caching and address normalization
Created interactive plan builder with level-based plan generation, allowing drivers to manually select orders, calculate routes, manage transitions between orders, and save multiple plan configurations
Designed plan store service for saving and loading multiple plan configurations with JSON persistence
Set up comprehensive development environment using VS Code Dev Containers (.devcontainer) for consistent development experience across team members
Implemented Zod schema validation for all API endpoints ensuring type safety and request validation
Built geocoding service with persistent caching and Haversine distance calculations for spatial optimizations
Developed transition routing system supporting both driving and train/transit modes with real-time schedule integration

Next.js Express.js TypeScript JavaScript Material UI Docker Dev Containers Node.js React REST API Google Maps API Zod Luxon Haversine

OKAS FLD - Drive & Delivery Services

Business Website Project 2025

Modern business website for OKAS FLD (drive & delivery services). Built with Next.js (App Router), TypeScript, and Tailwind; responsive, SEO‑optimized, and i18n (DE/EN/FR). Deployed from GitHub to Render.com with a custom domain via AWS Route 53.

Key Achievements

Developed responsive web app using Next.js with TypeScript
Implemented multi-language support with i18n
Created mobile-first design with Tailwind CSS and custom components
Implemented modern development practices and architecture
Handled full-stack deployment and DevOps workflows
Deployed via GitHub → Docker Hub → Render.com with AWS Route 53 DNS management

Next.js React TypeScript Tailwind CSS GitHub Render.com AWS Route 53

ASOK-SE - Enterprise Web Application

ASOK-SE SARL 2024

Comprehensive web application aimed at enhancing enterprise advertisement. Integrated multiple technologies to provide a seamless user experience for businesses to promote their products and services.

Key Achievements

Developed and optimized front-end components using HTML and CSS, ensuring cross-browser compatibility and responsiveness
Built robust backend services with Python/Django, handling business logic, data storage, retrieval, and processing efficiently
Utilized Docker for containerization, facilitating easy deployment and scalability of the application
Incorporated JavaScript for dynamic content updates and enhanced user interaction

HTML CSS JavaScript Docker GitHub Python Django

Local Jenkins Container in VS Code Dev Container

Private Project 2024

Professional CI/CD development environment with Jenkins configured for Django projects using VS Code Dev Containers. This setup provides a fully configured Jenkins environment with Docker support.

Key Achievements

Containerized Jenkins environment with Docker-in-Docker support
Complete Python/Django development tooling
Built-in security scanning (Trivy, Bandit)
Integrated testing suite (pytest, pytest-django, pytest-cov)
Code quality tools (flake8, black, isort)
Professional template for Automated CI/CD pipeline
VS Code integration with essential extensions

Jenkins Docker VS Code Python Django CI/CD DevOps

Vivantes Humanitas Web Application

Friend's Project 2023 - 2024

Django-based web application for Vivantes Humanitas e.V., enabling efficient management of volunteer registrations and activity tracking.

Key Achievements

Developed a Django-based web application for Vivantes Humanitas e.V., enabling efficient management of volunteer registrations and activity tracking
Built a responsive frontend using HTML, CSS, and JavaScript, ensuring an intuitive and user-friendly interface
Designed a secure backend with Django and Python, ensuring data integrity and compliance with privacy regulations

Python Django HTML CSS JavaScript

Pentak SARL International - Enterprise Web Application

Pentak SARL International 2021 - 2022

Web application using Laravel/Lumen to manage business operations for a friend's company.

Key Achievements

Created a web application using Laravel/Lumen to manage business operations for a friend's company
Implemented a user interface with PHP, PHP-Blade, HTML, CSS, and JavaScript

PHP Laravel Lumen PHP-Blade HTML CSS JavaScript

Offer Comparison Web Application

Own Initiative 2020 - 2021

Laravel/Lumen-based application to compare online offers, allowing users to make informed purchasing decisions.

Key Achievements

Designed and developed a Laravel/Lumen-based application to compare online offers, allowing users to make informed purchasing decisions
Integrated secure user authentication with Laravel/Passport, ensuring data privacy and secure access
Utilized SQLite and Eloquent ORM for efficient database management and dynamic data presentation

PHP Laravel Lumen HTML CSS JavaScript Git GitHub SQLite

Restaurant Management Application

Initiative with Friends 2019 - 2020

Laravel/Lumen-based system to streamline restaurant operations, including inventory tracking and order management.

Key Achievements

Built a Laravel/Lumen-based system to streamline restaurant operations, including inventory tracking and order management
Collaborated remotely using Zoom and managed code versions with Git/GitHub

PHP PHP-Blade Framework Git GitHub Zoom

Hairstyle Business Web Application

Initiative with Friends 2018 - 2019

Express.js web application to support a friend's hairstyle business by enabling appointment booking and customer management.

Key Achievements

Developed an Express.js web application to support a friend's hairstyle business by enabling appointment booking and customer management
Created a responsive frontend with HTML, CSS, and JavaScript, ensuring compatibility across devices

Express.js HTML-TWIG Framework MySQL npm ngrok Git nodemon babel-node.js

CSK Student Association Web Application

Own Initiative 2016 - 2017

Web application for the CSK student group at TU Clausthal, facilitating event management and communication among members.

Key Achievements

Led the development of a web application for the CSK student group at TU Clausthal, facilitating event management and communication among members
Designed a cross-platform solution using Node.js, TypeScript, and Ionic Cordova for enhanced accessibility

Node.js TypeScript HTML CSS Ionic Cordova Git

Private Tutoring in Computer Science

Own Initiative 2014 - Present

Conducted private tutoring sessions to help students master programming languages and databases, focusing on practical problem-solving and real-world application.

Key Achievements

Conducted private tutoring sessions to help students master programming languages like Java, C++, PHP, and Python, as well as databases such as SQL and NoSQL (Neo4j, ArangoDB)
Focused on practical problem-solving and real-world application of frameworks and tools to strengthen students' skills and confidence

Java C++ PHP Python SQL NoSQL Neo4j ArangoDB

IT Consultant - Vehicle Technology & Planning

DB Regio AG August 2023 - Present

Key Achievements

Developed automation solutions using Python and UiPath, achieving 80% reduction in manual effort with a goal to reach 99% automation
Built and deployed RPA robots using UiPath Orchestrator, enabling seamless task automation and improving team productivity
Collaborated with cross-functional teams to design and implement robust software solutions, improving system efficiency and client satisfaction
Utilized Agile (SCRUM) to manage and deliver projects on time, ensuring continuous improvement and client alignment
Employed version control with Git and GitLab, ensuring smooth collaboration and code integrity
Leveraged VBA (Visual Basic for Applications) to automate complex and time-consuming Excel processes, significantly improving efficiency and accuracy

Python UiPath RPA VBA Excel Git GitLab Agile SCRUM

Software Developer

Achelos GmbH August 2021 - August 2023

Key Achievements

Developed tools in Java and C++ to manage virtual machine connections, automating configuration, file upload, and data processing tasks
Integrated JUnit for unit and integration testing, improving code quality and reducing bugs in production
Collaborated in an Agile environment, using JIRA for issue tracking and sprint planning to meet project deadlines efficiently
Streamlined development workflows with Jenkins and Maven for automated build, testing, deployment, and CI/CD pipelines
Managed package dependencies using Maven-Nexus for efficient artifact storage and distribution
Utilized Git and GitLab for version control and source code management, with occasional use of Sourcetree for enhanced git workflow visualization
Proficient in VS Code and Eclipse for efficient coding, debugging, and project management across various programming languages
Fostered team communication and collaboration through MS Teams, ensuring smooth project communication and coordination

Java C++ Spring Boot JUnit Jenkins Maven Git JIRA

RPA Developer

DB Regio AG August 2021 - June 2022

Key Achievements

Automated data processing tasks using Python and VBA Excel, cutting processing time by at least 30%
Developed and deployed RPA robots with UiPath, streamlining business workflows and improving task accuracy and efficiency
Worked with Agile methodologies (SCRUM) to manage automation tasks, ensuring timely delivery and client satisfaction
Collaborated remotely with teams via MS Teams and GitLab to ensure smooth communication and version control

Python VBA Excel UiPath RPA Agile SCRUM

Working Student - Software Developer

Eves-IT June 2018 - February 2021

Key Achievements

Developed tools in Java, Spring MVC, Spring Boot and JavaFX, optimizing internal processes for automotive clients such as Volkswagen AG
Created database solutions with Oracle SQL and Flyway for seamless data management across multiple systems
Implemented automated testing frameworks using JUnit and TDD principles, significantly reducing bugs before and after deployment
Collaborated in an Agile environment, managing development cycles using JIRA for task tracking, Bitbucket for source control management, Bamboo for CI/CD, SonarQube for QA, Miro for digital team kanban board, Zoom and MS Teams for remote collaboration
Used Confluence for documentation, ensuring that all project details were clearly documented and easily accessible to the entire team
Managed project dependencies and packages using Maven Artifactory, ensuring smooth version control and efficient package distribution
Leveraged IntelliJ IDEA and Eclipse as integrated development environments (IDE) to improve code quality and development speed
Optimized client workflows by delivering customized software solutions on time, significantly improving operational efficiency

Java Spring Boot Spring MVC JavaFX Oracle SQL JUnit JIRA Bamboo

Master's Thesis: End-to-End Learning System for Autonomous Drone Navigation

Technical University of Clausthal 2018 - 2024

Supervisors: Prof. Dr. Andreas Rausch, Dr. Adina Aniculaesei

This project aimed to revolutionize autonomous drone flight by implementing a cutting-edge end-to-end (E2E) learning approach. Conducted within the AirSim simulation environment, the work achieved Level 4 autonomous navigation capabilities, integrating advanced spatial awareness, core navigation, and expanded features such as non-planar flight paths.

Key Achievements

Designed and implemented an autonomous drone navigation system using Python, TensorFlow, and AirSim simulation
Achieved level-4 navigation capabilities, including spatial awareness and non-planar movement
Delivered a scalable and efficient solution for drone navigation
Unlike traditional modular methods, the E2E system directly learns the mapping between inputs and outputs, enabling seamless and efficient navigation in complex environments
This innovative approach highlights a significant leap in autonomous aerial systems, setting the foundation for smarter and more adaptive drone technologies

Python TensorFlow Keras AirSim Pandas Scikit-learn Git GitLab Machine Learning Autonomous Systems

Master's Project: Safeguarding Safety-Critical Systems

Technical University of Clausthal 2018 - 2024

Supervisors: Prof. Dr. Andreas Rausch, Dr. Adina Aniculaesei

This project focused on analyzing safety-critical systems, with a particular emphasis on drones. As inherently safety-critical systems, drone development demands adherence to specialized methodologies, rigorous safety standards, and tailored development processes.

Key Achievements

Conducted an extensive literature review on safety-critical systems, focusing on unmanned aircraft systems
Analyzed and documented industry standards and laws for system development
The work primarily involved an in-depth literature review of relevant standards, laws, and safeguarding practices associated with the design and development of unmanned aircraft systems
By exploring the regulatory and technical frameworks, this study provides valuable insights into the processes necessary to ensure the reliability and safety of these advanced systems

Literature Review Safety Standards Markdown LaTeX Excel Research Documentation

Bachelor's Thesis: Software Architecture Management in the Automotive Sector

Technical University of Clausthal 2013 - 2018

Supervisors: Prof. Dr. Andreas Rausch, Arthur Strasser

This project centers on Model-Driven Software Development (MDSD), a cutting-edge approach to achieving highly automated software creation. The primary objective was to design and develop a customized tool that supports Model-Driven Architecture (MDA), a pivotal aspect of MDSD, by generating tailored software architecture models derived from a metamodel.

Key Achievements

Built an eclipse standalone tool to support Model-Driven Architecture (MDA) for customized software solutions
Utilized Java, Eclipse, and UML to address architectural challenges in the automotive industry
Addressed the limitations of standardized frameworks like the Unified Modeling Language (UML)—which often lack flexibility or prove overly complex for specific architectural challenges—the tool is designed to meet the unique demands of the automotive industry
By automating critical development steps and delivering architecture solutions optimized for real-world needs, this work demonstrates innovation in streamlining software development processes while driving efficiency and adaptability in safety-critical industries

Eclipse GMF/EMF Java UML Model-Driven Development Automotive Architecture

Bachelor's Project: Smart Beer Bar System

Technical University of Clausthal 2013 - 2018

Supervisors: Benjamin Fischer, Yong Wang, Prof. Dr. Andreas Rausch

This project involved the development of a smart beer bar management system designed to enhance user experience and operational efficiency. The system allows users to log in, view personalized details such as beer consumption in liters, manage other users and their consumption data, and securely log out.

Key Achievements

Developed a cross-platform, real-time management system using C++, Qt, and SQLite, enabling seamless tracking of beer consumption, user data, and inventory
Implemented user authentication and role-based access controls, ensuring data security and allowing different levels of user interaction (admin, user, guest)
Optimized inventory management by automating consumption tracking, reducing manual efforts and providing real-time insights into stock levels and user behavior
Built using C++, Qt, SQLite, and developed in Eclipse and Qt Creator on Ubuntu, the project demonstrates a seamless integration of modern technologies to create a user-friendly and efficient solution

C++ Qt SQLite Eclipse Qt Creator Ubuntu UML Cross-Platform

Notable Project: Electric Vehicle Simulator

Technical University of Clausthal 2013 - 2018

Supervisors: Meng Zhang

This project focuses on developing an electric vehicle simulator to address key challenges such as range limitations and high costs associated with electric cars. The simulator enables users to simulate a trip and receive an evaluation of their driving performance upon completion.

Key Achievements

Designed and integrated an interactive driver-simulator module using Java and OpenDS, allowing users to simulate electric vehicle trips and receive detailed performance evaluations
Implemented a feedback loop to analyze energy consumption and optimize trip performance, helping to improve electric vehicle efficiency and user experience
Collaborated with a cross-functional team to ensure the simulator aligned with the real-world specifications of electric vehicles, enhancing the accuracy of results and simulations
Divided into several sub-projects, this programming internship specifically involved the implementation of a driver-simulator interaction, built using Java

Eclipse Java UML OpenDS Java SWT Java Swing Simulation

Notable Project: Parking Management System

Technical University of Clausthal 2013 - 2018

Supervisors: Meng Zhang

This project addresses the growing challenge of finding parking in crowded urban areas while contributing to the advancement of autonomous driving by automating parking management. The goal was to create a real-time parking management system that allows users to easily monitor the availability of parking spaces.

Key Achievements

Developed a real-time parking management application for Android, using Python, TypeScript, and Java, enabling users to find available parking spots based on sensor data and user input
Integrated data visualization tools for users to easily view parking availability and reservation status, improving the overall user experience
Streamlined communication with backend servers to ensure up-to-date and accurate parking lot status, allowing efficient management of parking resources in high-demand areas
The system was built using Python, TypeScript, and Java (Android), showcasing expertise in mobile development, backend services, and sensor data integration for autonomous systems

Java Android Python TypeScript UML Mobile Development Backend Services

Notable Project: Graph Database Comparison

Technical University of Clausthal 2013 - 2018

Supervisors: Gerrit Burmester, B.Sc.

This project involved a comprehensive performance comparison between two leading NoSQL graph databases: Neo4j and ArangoDB. The objective was to assess the strengths and capabilities of each database to determine which offers superior performance for graph-based data management.

Key Achievements

Conducted performance benchmarking between Neo4j and ArangoDB, writing Python scripts to evaluate query efficiency and scalability under various real-world scenarios
Analyzed and presented findings to stakeholders, providing actionable insights to optimize database selection for different types of graph-based applications
Developed custom testing scripts to simulate data workloads, ensuring that performance metrics were relevant to industry standards and real-world usage
To achieve this, I developed and executed a series of benchmark tests using a custom Python script, enabling a detailed analysis of each database's efficiency and scalability

Neo4j ArangoDB Python NoSQL Graph Databases Performance Testing

Research Assistant - Software Development and Automation

Technical University of Clausthal April 2021 - 2022

Key Achievements

Built simulation tools using Python and ROS2 for monitoring security-critical drone systems, improving system reliability and performance
Automated data collection and analysis for drone control systems using Python, ROS2 and Airsim, reducing the time required for experimental setups
Collaborated with international teams to align research objectives with regulatory standards and safety protocols in the drone industry
Collaborated remotely with local teams via BigBlueButton (BBB) and GitLab to ensure smooth communication and version control

Python ROS2 AirSim Drone Systems Research

Research Assistant

Technical University of Clausthal 2014 - 2018

Key Achievements

Developed and maintained software solutions in Java for various research projects, automating workflows and improving the efficiency of data collection and analysis processes
Utilized version control systems using Subversion (SVN), ensuring seamless collaboration and traceability of code changes between multiple research teams
Extended MS Excel functionalities with VBA Excel to support colleagues in time registration and data management
Designed and implemented modular applications using the MVC architecture pattern, ensuring scalability and maintainability of research tools
Implemented automated testing using JUnit to ensure software stability, reducing bugs and errors and improving the reliability of research outputs
Followed the V-Model XT method for software development, adhering to structured and systematic processes to meet project requirements and quality standards
Collaborated with teams using SharePoint for documentation and Subversion (SVN) for version control, streamlining code management across multiple research projects
Utilized Eclipse IDE for efficient development and debugging of Java-based research applications, accelerating the development cycle
Automated Excel workflows with custom VBA macros, saving significant manual effort and improving the accuracy of time registration processes for team members
Worked independently to deliver high-quality software solutions that supported various research initiatives, demonstrating strong problem-solving skills and self-management

Java VBA Excel MVC JUnit SVN SharePoint Research Eclipse

{IT / RPA Consultant}

Proven Impact & Achievements

About Me

My Journey

Core Expertise

Featured Projects

Daimon Platform

LeitApp Platform

Multipurpose Service Website

Logistics Marketplace MVP

Multipurpose Website

Web & Mobile Platform

Women's Health NGO Website

Composer Portfolio Website

Driver Order Optimizer

RPA Automation Solutions

OKAS FLD Business Website

Vivantes-Humanitas Web Application

Pentak Sarl International Website

Autonomous Drone Navigation

Software Architecture Tool

Cross-Platform Mobile Apps

Professional Experience

Daimon Platform - Enterprise Microservices Platform

LeitApp Platform - Immigration & Integration Platform

Multipurpose Service Website - Cross-Platform Application

Logistics Marketplace MVP - Full-Stack Platform

Multipurpose Website - E-Commerce Platform

Web & Mobile Platform - Corporate Website

Women's Health NGO Website - Full-Stack Application

Composer Portfolio Website - Multilingual Platform

Driver Order Optimizer - Vehicle Driver Planning System

OKAS FLD - Drive & Delivery Services

ASOK-SE - Enterprise Web Application

Local Jenkins Container in VS Code Dev Container

Vivantes Humanitas Web Application

Pentak SARL International - Enterprise Web Application

Offer Comparison Web Application

Restaurant Management Application

Hairstyle Business Web Application

CSK Student Association Web Application

Private Tutoring in Computer Science

IT Consultant - Vehicle Technology & Planning

Software Developer

RPA Developer

Working Student - Software Developer

Master's Thesis: End-to-End Learning System for Autonomous Drone Navigation

Master's Project: Safeguarding Safety-Critical Systems

Bachelor's Thesis: Software Architecture Management in the Automotive Sector

Bachelor's Project: Smart Beer Bar System

Notable Project: Electric Vehicle Simulator

Notable Project: Parking Management System

Notable Project: Graph Database Comparison

Research Assistant - Software Development and Automation

Research Assistant

Technical Skills

Programming Languages

Frameworks & Tools

Frontend Libraries & Tools

Databases

Message Queues & Event Streaming

Real-Time & WebSockets

DevOps & Cloud

Third-Party Integrations

Testing & Quality

Backend Tools & Libraries

Education

Master of Science in Computer Science

Bachelor of Science in Computer Science

High School Diploma

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