Full stack engineer building with AI.
10+ years shipping web and mobile products end to end — Rails, TypeScript, React, Next.js and React Native — and wiring AI models into real-world features.
➜ whoami name Edgar Martinez role Software Engineer @ Instacart focus full stack · mobile · AI integrations agents claude code, codex, opencode stack rails, typescript, react, next.js, react native, go status ● open to new opportunities it's a real terminal, type 'help' and press enter
Internal tools that power promotions and discounts across 1,400+ retail partners and 80,000+ stores. React UIs, Rails APIs, feature flags and end-to-end testing.
Led SaaS development on the MERN stack, integrated AI-driven features with Rails and Next.js, and shipped React Native apps that lifted user engagement 30%.
Directed multi-platform builds with Node.js APIs and React Native apps, and owned QA and launches for client web and mobile products.
Built multi-department systems and a custom CMS, plus franchise management tools on Rails and React.
Interactive publishing and live broadcast platforms for El Salvador's national newspaper.
AI coding agents are part of my daily workflow, from planning and refactors to reviews and releases. I know how to set up the harness around them so they do reliable work on real codebases.