Backend Systems · Developer Tools · Reliability
I build practical tools and backend systems, with a focus on correctness, observability, and measurable trade-offs.
Chrono
Event-sourced project planning with timeline replay, isolated scenarios, and deterministic delivery forecasts.
PawCompanion
Companion chat and booking prototype with atomic reservations and separate guest and partner workflows.
Codex Halo
Rust and Tauri Windows HUD for Codex quotas and per-model usage, with local session-log parsing.
LambdaOpt
Compares AWS Lambda costs and p95/p99 latency using benchmarks and CloudWatch metrics.
Merged upstream PRs.
- Fjall #346 · Prevented write skew by tracking
size_ofreads in optimistic transactions. - AgentMemory #1688 · Fixed Windows demo Compose cleanup and added a teardown smoke test.
- Litestream #1617 · Fixed IPv6 bracket handling for SFTP URLs with no port.
- Pydantic AI #12681 · Corrected the Gemini model ID in the structured-output example.
Languages & backend · Python, TypeScript, Rust, Go, Java, FastAPI, Node.js, PostgreSQL, Redis, Kafka
AI & agents · PyTorch, Hugging Face, LangGraph, LangChain, LlamaIndex, MCP, RAG, pgvector
Web & desktop · React, Next.js, Tailwind CSS, Tauri, React Native, Vite
Cloud & quality · AWS EC2 / RDS / Lambda, CloudWatch, Docker / Compose, GitHub Actions, Playwright, pytest



