Senior Full-stack AI Systems Engineer

Senior full-stack and AI systems engineer with 15+ years of experience building web products, SaaS platforms, infrastructure, and applied AI systems end-to-end. Recently built an AI research/data-extraction system using LLM APIs, embeddings, structured outputs, evals, prompt versioning, Python automation, and TypeScript backend/frontend pieces. It reduced research workflows from several weeks to ~30 minutes and processed millions of documents. Before that I was lead engineer for a production e-commerce marketplace, working across frontend, backend, infrastructure, security, reliability, internal tools, and major migrations. I helped move major parts of the platform from JS to TS, MariaDB to PostgreSQL, Heroku/Fly.io to DigitalOcean, Fastly to Cloudflare, SCSS to Tailwind. Sasha is usually a good fit for small teams that need someone senior who can take ambiguous product or technical problems and turn them into reliable software.