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Accomplished senior full stack developer and AI engineer with 5+ years of experience building and deploying scalable web applications across industries. Strong expertise in React.js, Node.js, and TypeScript, with deep command of microservices, API design, and practical AI/LLM integration using OpenAI Agent SDK, LangGraph, RAG, and MCP.…

TanSen Khan

Full Stack Developer, AI Engineer, Software Engineer, +3

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Accomplished senior full stack developer and AI engineer with 5+ years of experience building and deploying scalable web applications across industries. Strong expertise in React.js, Node.js, and TypeScript, with deep command of microservices, API design, and practical AI/LLM integration using OpenAI Agent SDK, LangGraph, RAG, and MCP.…

Available to hire

Accomplished senior full stack developer and AI engineer with 5+ years of experience building and deploying scalable web applications across industries. Strong expertise in React.js, Node.js, and TypeScript, with deep command of microservices, API design, and practical AI/LLM integration using OpenAI Agent SDK, LangGraph, RAG, and MCP.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

German

Beginner

Work Experience

Senior Software Developer at Soulhouse GmbH

September 1, 2025 - February 1, 2026

Led development of a business-critical booking and administration platform using TypeScript, Express.js, and Apollo GraphQL. Integrated agentic AI/LLM capabilities using OpenAI Agent SDK, LangGraph, RAG, and MCP to accelerate development cycles, including automated code generation and analysis. Enhanced system security by implementing AWS DevSecOps tooling and optimizing the codebase for scalability. Built robust API integrations to connect external CRM and marketing systems.

Software Developer at United Digital Group

April 1, 2023 - August 1, 2025

Developed scalable applications using React.js, TypeScript, and Tailwind CSS in an Agile environment. Built AI-powered apps integrating OpenAI/DeepL APIs and LLMs with RAG, OpenAI Agent SDK, LangGraph, and MCP for real-time translation and predictive insights. Developed modular APIs with Node.js, Next.js, and Astro.js; led deployments via Vercel and Azure DevOps. Designed and optimized relational (SQL) and NoSQL databases to ensure high-performance data integrity.

Full Stack Developer at Follow-me Technology Group

July 1, 2022 - December 1, 2022

Built scalable web applications with React.js, TypeScript, and Node.js with PostgreSQL. Developed cross-platform desktop applications using Electron.js. Managed containerized deployments with Docker and automated testing using Cypress.js.

AI-Focused Full Stack Developer at IAIS Fraunhofer

June 1, 2020 - May 1, 2022

Integrated LLMs with PyTorch and deep learning frameworks for NLP and computer vision use cases. Built high-performance APIs using FastAPI and Python and queried RDF data via SPARQL. Delivered full-stack solutions using MongoDB, Express.js, and React.js.

Full Stack Developer (Part-time) at Gaims Software / University of Bonn

November 1, 2017 - June 1, 2020

Maintained applications using PHP (Symfony/Laravel) with MySQL and PostgreSQL. Implemented automated functional testing using Selenium.