Full-stack engineer building AI systems that hold up past the demo: agent memory, grounded retrieval, and real-time apps with real users. I ship full products end-to-end, from the database schema to the screen.
Currently open to backend / AI-infrastructure roles.
CAT-DUEL - real-time 1v1 exam-prep duels
Two players, one question set, live Elo matchmaking, and timed scoring. The UI is the easy part; the
hard part is keeping game state consistent when both players answer on the same millisecond and
connections drop mid-duel. Solved with two-phase locking and Redis NX guards for race-free
concurrent scoring, plus reconnect-safe state so a dropped player rejoins exactly where they left
off.
TypeScript | React Native | Expo | Node.js | Socket.io | Postgres | Redis | Prisma
brain - local-first memory layer for long-running agents
Scoped memories over raw conversation history with hybrid vector + BM25 retrieval, automatic fact extraction, and reconciliation when new facts contradict old ones, all exposed as MCP tools so any agent can plug in. Built with an eval harness from day one, so retrieval quality is measured, not guessed.
LOCOMO conv-26 reranker blend: 64.8% judged accuracy (129/199), 73.6% fused evidence recall,
77.7% evidence hit rate, 0 failures. Single-conversation experiment, 199 questions.
Python | SQLite | sqlite-vec | FTS5 | Ollama | MCP
cortex - social exports into a grounded knowledge base
Ingests personal exports into a pgvector store and answers questions with cited sources, so every claim traces back to where it came from. Hybrid retrieval with reciprocal rank fusion instead of naive score addition.
Python | FastAPI | Postgres | pgvector | React | DeepSeek
AI that's more than a chat box: memory that gets better the longer it runs, retrieval that can show its work, and real-time interfaces that make complex flows feel direct. Most of what I build is solo, in public, and shaped by real users instead of a slide.
Languages | TypeScript | Python | SQL | JavaScript
Frontend | React | Next.js | React Native | Expo | Tailwind | Framer Motion
Backend | Node.js | Express | FastAPI | Prisma | PostgreSQL | Redis | SQLite
AI / Retrieval | RAG | embeddings | vector search | BM25/FTS | MCP | local LLM tooling
Infra | Docker | GitHub Actions | CI | testing | observability-minded design