I have 5 years of commercial experience. I can develop, test and debug web and mobile apps as a FullStack developer.
Aktualisiert am 09.12.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 15.12.2025
Verfügbar zu: 100%
davon vor Ort: 100%
Node.js/Express
React/Node
TypeScript
JavaScript
React
React Native
Node.js
ExpressJS

Einsatzorte

Einsatzorte

Harmsweg (+10km)
Deutschland
möglich

Projekte

Projekte

Ocean AI

Role: Python Backend Developer


Tasks:

  • Designed and scaled real-time backend infrastructure for a healthcare voice assistant processing live calls and conversations
  • Integrated LiveKit and Twilio for bi-directional audio streaming and telephony workflows
  • Developed REST APIs and WebSocket channels to support real-time transcription and AI-agent interactions
  • Implemented LLM-based orchestration using LangChain, connecting speech-to-text, intent parsing, and response generation modules
  • Used Redis for session-level caching and state management across streaming pipelines
  • Built internal dashboards in React.js + TailwindCSS for monitoring call metrics and AI session logs
  • Deployed services with Docker and AWS (ECS, S3, CloudWatch), ensuring reliable uptime and auto-scaling


Skills:

WebSockets


Used Products:

React.js, Python, Django, DRF, FastAPI, Pandas, TensorFlow, Hatchet, LiveKit, Twilio, Docker, AWS, OpenAI, LangChain, PostgreSQL, Redis


Petrol Prices Platfol

Role: Full-Stack Developer

Customer: Coreteka


Tasks:

  • Rebuilt user-facing web application UI using React.js + TailwindCSS, improving SEO score and page load performance
  • Migrated legacy SSR views to Next.js, enabling faster rendering and better caching of high-traffic pages
  • Designed and maintained REST APIs for real-time fuel price updates, including third-party API integrations
  • Refactored database models and queries, transitioning parts of the system from MySQL to PostgreSQL for improved reliability
  • Implemented scheduled tasks and cron flows for notifications, user engagement, and automated data refresh
  • Added admin panel features for price management, roles, permissions, and reporting
  • Set up CI/CD pipelines with GitHub Actions to automate deployment workflows


Skills:

REST APIs


Used Products:

Node.js, Python, Express.js, MySQL, PostgreSQL, Netcore/Mailjet, React.js, Next.js, TailwindCSS, Vite, GitHub Actions


Wiima Logistics Platform

Role: Full-Stack Developer

Customer: Coreteka


Tasks:

  • Developed logistics and supply chain management platform features, including order tracking, warehousing, and freight workflows
  • Integrated external services such as Autobooking and shipment tracking APIs to synchronize logistics data in real time
  • Designed and optimized MongoDB schemas to handle high-volume operational data
  • Implemented document parsing and automated generation for shipment and warehouse reporting
  • Introduced GraphQL API endpoints for data aggregation and improved frontend query flexibility
  • Improved platform responsiveness and load performance by optimizing build pipeline via Webpack configuration


Skills:

REST APIs, GraphQL


Used Products:

Angular, Node.js, React.js (migration start), MongoDB, Redis, Webpack

Kompetenzen

Kompetenzen

Top-Skills

Node.js/Express React/Node TypeScript JavaScript React React Native Node.js ExpressJS

Produkte / Standards / Erfahrungen / Methoden

REST APIs
GraphQL
WebSockets
gRPC
OAuth 2.0 / JWT Authentication
Vite
Webpack
Babel
ESLint
Prettier

Profile:

  • I am a Full-Stack Engineer with 5 years of experience building scalable web and AI-driven applications
  • I specialize in backend architecture, real-time communication, and high-performance API design, working with Python (Django, DRF, FastAPI) and Node.js (NestJS, Express.js)
  • On the frontend, I build responsive interfaces using React.js, Next.js, TypeScript, TailwindCSS, Redux, and modern tooling
  • I also have strong experience integrating voice, data, and AI workflows using WebSockets, Twilio, LiveKit, OpenAI, and LangChain
  • I focus on clean architecture, reliability, and seamless user experience, deploying applications with Docker, GitHub Actions, and AWS / Vercel


Frameworks & Libraries:

React.js, Next.js, Angular, Node.js, Nest.js, Express.js, Django, DRF, FastAPI, Pandas, TensorFlow, Redux (Thunk/Saga), Zustand, Bootstrap, TailwindCSS


DevOps & Cloud:

Docker, GitHub Actions (CI/CD), AWS (EC2, S3, Lambda, CloudWatch), Vercel, Netlify, Nginx, Linux environmentsio


AI / Voice / Integrations:

OpenAI API, LangChain, Twilio, LiveKit, Stripe, PayPal, TextMagic, Xero, DocuSign, Google Maps APIs, Facebook/Twitter/Instagram APIs, HelloSign, Hatchet

Programmiersprachen

Python
TypeScript
JavaScript (ES6+)

Datenbanken

PostgreSQL
MySQL
MongoDB
Redis
SQLite

Einsatzorte

Einsatzorte

Harmsweg (+10km)
Deutschland
möglich

Projekte

Projekte

Ocean AI

Role: Python Backend Developer


Tasks:

  • Designed and scaled real-time backend infrastructure for a healthcare voice assistant processing live calls and conversations
  • Integrated LiveKit and Twilio for bi-directional audio streaming and telephony workflows
  • Developed REST APIs and WebSocket channels to support real-time transcription and AI-agent interactions
  • Implemented LLM-based orchestration using LangChain, connecting speech-to-text, intent parsing, and response generation modules
  • Used Redis for session-level caching and state management across streaming pipelines
  • Built internal dashboards in React.js + TailwindCSS for monitoring call metrics and AI session logs
  • Deployed services with Docker and AWS (ECS, S3, CloudWatch), ensuring reliable uptime and auto-scaling


Skills:

WebSockets


Used Products:

React.js, Python, Django, DRF, FastAPI, Pandas, TensorFlow, Hatchet, LiveKit, Twilio, Docker, AWS, OpenAI, LangChain, PostgreSQL, Redis


Petrol Prices Platfol

Role: Full-Stack Developer

Customer: Coreteka


Tasks:

  • Rebuilt user-facing web application UI using React.js + TailwindCSS, improving SEO score and page load performance
  • Migrated legacy SSR views to Next.js, enabling faster rendering and better caching of high-traffic pages
  • Designed and maintained REST APIs for real-time fuel price updates, including third-party API integrations
  • Refactored database models and queries, transitioning parts of the system from MySQL to PostgreSQL for improved reliability
  • Implemented scheduled tasks and cron flows for notifications, user engagement, and automated data refresh
  • Added admin panel features for price management, roles, permissions, and reporting
  • Set up CI/CD pipelines with GitHub Actions to automate deployment workflows


Skills:

REST APIs


Used Products:

Node.js, Python, Express.js, MySQL, PostgreSQL, Netcore/Mailjet, React.js, Next.js, TailwindCSS, Vite, GitHub Actions


Wiima Logistics Platform

Role: Full-Stack Developer

Customer: Coreteka


Tasks:

  • Developed logistics and supply chain management platform features, including order tracking, warehousing, and freight workflows
  • Integrated external services such as Autobooking and shipment tracking APIs to synchronize logistics data in real time
  • Designed and optimized MongoDB schemas to handle high-volume operational data
  • Implemented document parsing and automated generation for shipment and warehouse reporting
  • Introduced GraphQL API endpoints for data aggregation and improved frontend query flexibility
  • Improved platform responsiveness and load performance by optimizing build pipeline via Webpack configuration


Skills:

REST APIs, GraphQL


Used Products:

Angular, Node.js, React.js (migration start), MongoDB, Redis, Webpack

Kompetenzen

Kompetenzen

Top-Skills

Node.js/Express React/Node TypeScript JavaScript React React Native Node.js ExpressJS

Produkte / Standards / Erfahrungen / Methoden

REST APIs
GraphQL
WebSockets
gRPC
OAuth 2.0 / JWT Authentication
Vite
Webpack
Babel
ESLint
Prettier

Profile:

  • I am a Full-Stack Engineer with 5 years of experience building scalable web and AI-driven applications
  • I specialize in backend architecture, real-time communication, and high-performance API design, working with Python (Django, DRF, FastAPI) and Node.js (NestJS, Express.js)
  • On the frontend, I build responsive interfaces using React.js, Next.js, TypeScript, TailwindCSS, Redux, and modern tooling
  • I also have strong experience integrating voice, data, and AI workflows using WebSockets, Twilio, LiveKit, OpenAI, and LangChain
  • I focus on clean architecture, reliability, and seamless user experience, deploying applications with Docker, GitHub Actions, and AWS / Vercel


Frameworks & Libraries:

React.js, Next.js, Angular, Node.js, Nest.js, Express.js, Django, DRF, FastAPI, Pandas, TensorFlow, Redux (Thunk/Saga), Zustand, Bootstrap, TailwindCSS


DevOps & Cloud:

Docker, GitHub Actions (CI/CD), AWS (EC2, S3, Lambda, CloudWatch), Vercel, Netlify, Nginx, Linux environmentsio


AI / Voice / Integrations:

OpenAI API, LangChain, Twilio, LiveKit, Stripe, PayPal, TextMagic, Xero, DocuSign, Google Maps APIs, Facebook/Twitter/Instagram APIs, HelloSign, Hatchet

Programmiersprachen

Python
TypeScript
JavaScript (ES6+)

Datenbanken

PostgreSQL
MySQL
MongoDB
Redis
SQLite

Vertrauen Sie auf Randstad

Im Bereich Freelancing
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Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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