Where I can contribute.
Full-time product and platform roles first, with focused consulting for well-defined systems work.
full-time first · selective systems work- Full-timeopen to Senior, Staff & Principal roles
Join as a full-stack AI product or platform engineer
Own products end to end while improving reusable frontend architecture, design systems, AI-enabled workflows, developer experience, and engineering standards.
- Contractselective engagements
Modernize a product or frontend platform
A focused engagement for design-system foundations, reusable component architecture, application modernization, experimentation systems, or a full-stack product build.
- Advisory
Design reliable AI-assisted engineering workflows
Architecture and workflow guidance for MCP tooling, coding-agent controls, evaluation, durable context, and verification gates.
Working with Sangmin
What roles is Sangmin considering?
Senior, Staff, and Principal opportunities in full-stack AI product engineering, frontend platforms, design systems, and developer tooling, based in the US or remote.
Is Sangmin frontend or full-stack?
Full-stack, with unusually deep frontend-platform experience. His work spans design systems and browser architecture through APIs, data, payments, deployment, observability, and AI workflows.
What has he shipped?
Four products taken from zero to one, reusable UI platforms at Verdocs, federal visualization systems at Peraton Labs, high-traffic media properties at Complex Networks, and more than 500 production experiments through SAE.SO.
What makes his platform work different?
He has shipped the product layer and the systems beneath it. That creates practical judgment about when to introduce reusable APIs, migration paths, quality gates, and shared conventions without blocking delivery.
How can we start?
Use the contact form or email sangmlee23@gmail.com with a short note about the role, product, or platform problem.
Where is he based?
He is US-based, works US hours or remote, and is fluent in English and Korean.
Looking for an engineer who can own the product and strengthen the platform?
I am considering Senior, Staff, and Principal roles where I can ship across the stack, improve the frontend platform, and build reliable AI-assisted engineering systems.
direct email · no scheduling gate