- Languages
- TypeScript, JavaScript, Python, Go, PHP, SQL, R, Solidity, HTML, CSS
- Front end
- React, Remix, Next.js, Astro, Angular, TanStack Query, Redux, Zustand, Zod
- Back end and APIs
- Node.js, Bun, Express, Hono, NestJS, REST, GraphQL, tRPC, Kafka, Redis, public API design
- Data
- PostgreSQL, MySQL, SQLite, MongoDB, Prisma, Drizzle, Supabase, Firebase, Parquet, Databricks
- Cloud and DevOps
- AWS, Google Cloud Platform (GCP), Cloudflare (Workers, D1), Fly.io, Vercel, Docker, Jenkins, CI/CD
- AI and experimentation
- LLM and agent integrations (ChatGPT apps, Model Context Protocol), A/B experiment design and analysis
- Practices
- distributed systems and architecture, systems integration, code review, testing and release management, mentoring, technical leadership