Location: Alpharetta, GA (Atlanta). US citizen, no sponsorship needed. Willing to obtain and maintain a US security clearance (none currently held). Remote: Yes, fully remote, US Willing to relocate: No Technologies: TypeScript, React, Next.js, Node, Python, FastAPI, GraphQL, REST, WebSockets, PostgreSQL, Docker, AWS, Playwright, Cucumber, GitHub Actions, Swift (native iOS), Claude Code, GitHub Copilot Résumé/CV: https://resume.s24defi.com | 470 789 1008 Email: andrespencer.dev@gmail.com

Full-stack engineer, 19 years. Most recently three and a half years shipping React and TypeScript across web ordering, catering and in-store kiosk at Wawa (1,000+ stores), and before that six years as UI technical lead on Chase Ultimate Rewards. On my own time I run a small studio. The biggest piece is an automated trading platform in Python and FastAPI across six broker integrations, with machine-enforced risk limits, a three-path kill switch and an append-only record of every automated decision. It stays in practice mode unless live trading is explicitly switched on. I have also shipped a native iOS app to the App Store and a Next.js service business on Vercel. My repos carry AGENTS.md and CLAUDE.md, a structured AI review runs ahead of human review on every PR, and CI still gates merge. Looking for senior or staff full-stack or AI-native product engineering, fully remote US, W2 or contract.