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Achievement: Pull Sharkx4Achievement: Pair Extraordinairex4Achievement: QuickdrawAchievement: YOLO

Achievements

Achievement: Pull Sharkx4Achievement: Pair Extraordinairex4Achievement: QuickdrawAchievement: YOLO

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AlexisMarasigan/README.md

Hi, I'm Alexis 👋

AI Engineer · Stockholm

I build production LLM systems — agent runtimes, eval and observability, the infra in between. Mathematics BSc (La Sapienza, Rome) + MSc coursework in Reinforcement Learning and stochastic processes (Stockholm University).

Selected work

  • 🔧 Merged into Google's Agent Development Kit — adk-python PR #3756: diagnosed and fixed an httpx client-closure bug in VertexAiSessionService.get_session() during multi-page event pagination. Merged via Copybara, commit b725045.
  • ♟️ OOP-and-Functional-Chess — chess engine implemented twice (object-oriented and functional) to compare paradigms head-to-head.
  • 📊 bustub-vectordb — fork of CMU's BusTub DBMS, exploring vector-search internals.

Currently exploring

  • Eval-first agent development — closing the loop between agent decisions and business outcomes
  • Hybrid RAG (graph + document) and where it actually beats vector-only
  • Coding-agent harnesses (Claude Code, Cursor) for team velocity

Stack

AI / LLM · LangGraph · LangFuse · hybrid RAG (Neo4j + DynamoDB) · prompt + eval design Backend · Python (FastAPI) · TypeScript (Remix on Node) Infra · AWS · Docker · Kubernetes · CI/CD Math · Numerical analysis · probability · optimization · RL

Connect

LinkedIn · alexisjh.one · alexismarasigan31@gmail.com

🎻 Fun fact: principal second violinist in two Italian youth orchestras (2016–2022) before fully pivoting to engineering.

Alexis Marasigan — GitHub stats

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