Senior Full-Stack Engineer for AI Startup

Join our early-stage AI-infrastructure startup as a hands-on senior full-stack engineer. Our web app is built - we need someone to take it the last mile to production-ready: reliability, security, testing, and making it safe for real users. This is a build-and-ship role: write the code and get it over the line with us. It starts as a paid pilot project, with a path to an ongoing role if it goes well. Stack: TypeScript, Next.js, Postgres/Supabase, Vercel, server-side LLM/AI. Bonus: AWS serverless (Lambda, S3, API Gateway, Cognito, DynamoDB). You: 5+ years hands-on production experience; shipped at least one product 0-to-1 to production; real LLM/AI feature experience (no thin wrappers); strong on security and reliability; Strong English.