welcome

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Jan Sirui Chen

AI Engineer

Munich, Germany

Building agentic systems at YC and venture-backed startups. Orchestrating coding agents to ship full-stack features. Youngest TA for LLM security at TUM.

Experience

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AI Engineering Intern

· Comena (YC S25)

Feb 2026 - Present

Built autonomous AI coding agent infrastructure using E2B sandboxes and OpenAI Codex:agents pick up Linear tickets, spin up isolated dev environments, implement features, run CI, and open PRs autonomously. 27 PRs merged to production. Shipped 55 PRs across full stack for a multi-tenant B2B order processing platform. Owned customer onboarding end-to-end with ERP data sync pipelines.

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AI Engineering Intern

· Voltir

Sep 2025 - Feb 2026

Architected event-driven queue systems with PostgreSQL, built autonomous AI agents with LangGraph, and developed LLM evaluation frameworks. Reduced data pipeline complexity by 58% and API calls by 80%.

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Teaching Assistant

· TUM:Chair of Software Engineering & AI

Mar 2025 - Jul 2025

Designed and taught a lecture on LLM Fundamentals for 40 students including Master candidates. Youngest TA (3rd semester BSc) in the chair's history, selected among PhD-level peers.

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Product Intern & First Employee

· Moonblock

Feb 2023 - Aug 2023

Built and maintained the core database for a proprietary market intelligence tool tracking NFT projects for Fortune 500 clients. Deployed automated data pipelines with Python web scraping and pandas.

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Founding Product

· Unfiltered

Apr 2022 - Oct 2022

Shaped the product for a B2B SaaS platform that grew to $240K MRR. Led the core analytical function for 300K+ members, evaluating financial and sentiment data.

Education

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BSc Computer Science

· Technical University of Munich

Oct 2023 - Present

Currently on a gap semester to build AI agents full-time.

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TUMKolleg Program

· TUM & Werner-Heisenberg-Gymnasium

Sep 2021 - Jun 2023

Selective collaborative program between TUM and WHG Garching for exceptionally talented students in the final 2 years of Gymnasium.

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Early Enrollment Program

· Technical University of Munich

Oct 2020 - Mar 2021

TUM early enrollment program for excellent high school students in Computer Science. Handpicked students participate in university-level Computer Science courses alongside regular degree students.

Projects

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magus-ai/

· Make x OpenAI Hackathon 2026hackathon

Grand Prize Winner (1st Place overall) · Track Winner

Intelligent freight rate quotation agent. Processes unstructured email requests via GPT-4o-mini extraction, resolves port names through 4-tier fuzzy matching (exact/alias/difflib/LLM), normalizes messy Excel rate sheets (ditto marks, merged cells), and calculates volume-weighted pricing with customer-specific SOP rules. Includes HITL review queue, full audit tracing, and REST API.

#fastapi #streamlit #openai #postgresql #pandas #openpyxl

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neo-command/

· Hack Nation 2026 · Databricks Trackhackathon

3rd Place in Databricks Track · Hack-Nation by MIT Sloan · 3000+ participants

Healthcare intelligence platform for the Virtue Foundation. Multi-agent system (OpenAI Agents SDK, GPT-5.2) with debate-driven claim verification (Advocate/Skeptic/Judge), knowledge graph of 742 Ghanaian facilities, medical desert detection, and mission deployment scoring. Full-stack with Next.js frontend, D3 network viz, Mapbox maps, and real-time agent tracing via SSE.

#openai-agents-sdk #nextjs #d3 #networkx #fastapi #lancedB

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airbio-track/

· Tech Europe Hackathon 2026hackathon

3rd Place overall · Track Winner · Tech Europe Hackathon

AI property management platform for short-term rentals. Vision AI extracts listing details from live camera walks (OpenCV + multi-provider LLMs via OpenRouter), detects maintenance issues from WhatsApp videos with frame-by-frame analysis, and auto-alerts property managers via Gmail. 5-service Docker Compose architecture with React, FastAPI, and MongoDB.

#react #fastapi #opencv #openrouter #mongodb #docker

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bookmark-organizer/

· Personalproject

Full-stack Twitter bookmark organizer. Generates semantic embeddings (OpenAI text-embedding-3-large, 1024D), clusters via UMAP dimensionality reduction + HDBSCAN, and auto-names topics with GPT-4o-mini. Interactive D3.js force-simulation bubble map for visual exploration. Built with Next.js, FastAPI, and PostgreSQL with pgvector.

#nextjs #fastapi #d3 #openai #hdbscan #umap #pgvector

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FOPGame/

· TUM · Fundamentals of Programmingcoursework

Quantum Maze Quest:a 2D maze game with A* enemy pathfinding, dynamic ray-traced lighting (Box2D Lights), timed power-ups, and an integrated level editor with reflection-based serialization. Built with LibGDX/Box2D physics, SpriteCache terrain batching, and a 5-level campaign with contextual audio.

#java #libgdx #box2d #a-star #gradle #github-actions

Recommendation

“Jan possesses a unique blend of deep intrinsic learning, the ability to communicate complex ideas with clarity, and a proactive drive that creates tangible results. He doesn't just complete tasks; he identifies opportunities for impact and builds solutions that elevate everyone around him.”

— Dr. Mark Huasong Meng, Research Fellow, Chair for Software Engineering & AI, TUM

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