A selection of systems I've built across AI, backend infrastructure, product workflows, and systems programming.
TypeScript library for safe retries of external side effects: when a timeout or crash leaves a write's outcome unknown, it checks the real system before acting again.
TypeScript · PostgreSQL · Advisory locks · Vitest · Model-based testing · npm package
Document AI built around evidence, with hybrid retrieval and source-validated citations.
Next.js · TypeScript · FastAPI · PostgreSQL · pgvector · Redis · Docker
Permissioned Gmail and Outlook access for AI clients, with revocable access and human-approved sending.
Next.js · TypeScript · OAuth · Gmail API · Microsoft Graph · MCP
A multi-tenant construction operations platform used by two companies, built around the actual procurement, inventory, billing, and document workflows teams were previously managing through Excel and WhatsApp.
Next.js · TypeScript · Supabase · PostgreSQL · Gemini
A deterministic event-driven simulation for exploring state, risk checks, replay, persistence, and streaming systems.
Python · FastAPI · PostgreSQL · Redis · Redpanda · React