Senior full-stack & AI software engineer
I’m Roc Yu, a senior full-stack and AI engineer with 15+ years of experience turning complex ideas into reliable products, agent workflows, and developer tools.
From AI agents and developer infrastructure to healthcare, education, and digital assets, I work across the stack to ship useful products, automate complex workflows, and make emerging technology dependable.
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Lead end-to-end delivery of customer-facing platforms, AI agents, and internal tools for healthcare, e-commerce, and workflow-automation clients.
Built and shipped full-stack applications for a diverse client portfolio using Ruby on Rails and modern front-end technologies, from technical planning through production delivery.
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Led full-stack engineering for an AI creative-generation platform, building the product experiences and systems that help teams create, iterate on, and scale advertising creative.
Engineered product features for an online mental-health platform connecting patients with psychiatric care, therapy, and coaching across the United States.
Built and enhanced administrative-platform and API capabilities for a leading non-custodial digital wallet serving millions of users globally.
Built the curriculum e-commerce platform from the ground up, enabling teachers and families to discover and purchase educational materials.
Engineered the e-commerce platform for Dr. Schulze’s herbal health products, supporting a large product catalog, subscriptions, and direct-to-consumer shopping.
Designed and built interactive, data-rich applications for Pew Research, Scripture Analytics, BLiNQ Media, and RGS Energy, making complex datasets accessible to end users.
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I’ve contributed to open-source software throughout my career, from foundational blockchain infrastructure to focused developer tools and Ruby libraries.
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AI agents, MCP, tool calling, LLM workflows, OpenAPI, GraphQL, prompt design
JavaScript, TypeScript, React, Vue, Svelte, HTML, CSS
Ruby, Rails, Go, Node.js, APIs, distributed systems
PostgreSQL, MySQL, MongoDB, AWS, Google Cloud
Codex, Claude Code, Cursor, GitHub Copilot, agent-assisted testing and delivery
Available for thoughtful projects