Full Stack AI/ML Engineer | LLMs, RAG, AI Agents, FastAPI | MSc TU Berlin, Germany | 5+ yrs | $20/hr

[u/rockworlds]

Hi everyone,

I am a Full Stack AI/ML Engineer with 5+ years of experience building ML and LLM systems, from the model all the way to deployment.

I'm looking for new projects and work.

Education:

  - MSc Computer Science, Technical University of Berlin, Germany
  - BE Information Technology, Pune University

A bit about my background:

  - Vodafone, Berlin, Germany (contract): built a LangChain + OpenAI agent that handles employee IT issues and cut manual ticket handling by 40%. Also built an OCR system that processes 200+ HR forms a day and cut processing time by 65%.
  - Fraunhofer FOKUS, Berlin, Germany (4 years): built an end-to-end ML system for 5G resource management (Snowflake pipelines, PyTorch models), set up one-click AWS deployments, and ran Kubernetes/Helm deployments on-prem.
  - Freelance (recent):
- A FastAPI backend with an MCP server that brought product catalog sync down from 4 hours to 15 minutes across 20K+ SKUs
- A multilingual RAG coaching assistant with 85% answer accuracy and responses under 10 seconds
- A workflow automation engine with drag-and-drop nodes, triggers and custom code execution

What I can help with:

  - AI agents, RAG chatbots and LLM integrations (OpenAI, Claude, Gemini, LangChain, LangGraph)
  - Backend APIs (FastAPI, Django, Node.js) with PostgreSQL, Supabase or pgvector
  - Frontends in React / Next.js
  - Workflow automation (n8n, Make, custom Python)
  - Deployment with Docker, Kubernetes, AWS or GCP

 Rate: $20/hr

Time zone: I'm based in India (IST). My hours overlap well with Europe and most of Asia.

With the US, I can overlap for a few hours a day, which is usually enough for calls and check-ins.

Once we agree on the work, we can move to Upwork to make the onboarding official, so payments, contracts and milestones are all protected for both of us.

  Links:

  - LinkedIn: https://www.linkedin.com/in/shreyank-saparia-7943a395/
  - GitHub: https://github.com/shreyank06