Global Lead · Full Stack Engineer
Global Technical lead across the full product lifecycle — frontend, backend, agent architecture, DevOps, and deployment across multiple simultaneous production SaaS products targeting global and Korean markets.
AI Agent Architecture: Architect standalone AI agent systems using LangGraph, LangChain, and Vercel AI SDK; design multi-step orchestration pipelines for document intelligence and business process automation.
Cloud Infrastructure: Own infrastructure across AWS, Hetzner, Fly.io, and Vercel with CI/CD pipelines built on GitHub Actions; responsible for all production deployments and environment management.
Full Stack Engineering: Build Next.js, React, Vite, and TypeScript frontends; Python and FastAPI backends against MySQL and PostgreSQL databases.
Payment Integration: Integrate production payment infrastructure using Paddle and Stripe — subscription billing, webhook event processing, and payment lifecycle management for live SaaS products.
Team Leadership: Lead and mentor a multicultural, multilingual engineering team across multiple timezones.
