I’m a product-minded full-stack engineer based in Berlin. I turn ambiguous business and operational problems into working products, workflows, and internal tools.

I work where product judgment, stakeholder translation, and engineering meet: clarifying scope, choosing pragmatic architecture, building with AI-assisted workflows, and owning review, testing, and iteration.

• Professional Work Showcase — Case studies from client and product work, including more than five years maintaining and evolving Apparel X, a multi-tenant ERP covering inventory, orders, SKUs, and financial reporting.
• Forexify — Delivered an AI trading workflow with constrained inputs and outputs, syntax and logic validation, controlled execution, fallback templates, and feedback loops. See the case study in the Professional Work Showcase.
• Zouluh — An actively explored fintech prototype using Next.js, TypeScript, Supabase, Plaid, and Gemini. Current work focuses on validating value and trust before treating the prototype as a production outcome.

• Marie Phone Dashboard — A recent Product Engineer technical build for a legal AI phone-assistant dashboard.
• Microservices Trading Platform — A TypeScript / Node.js system exploring event-driven services with RabbitMQ, Redis, gRPC, Docker, and CI.
• Creative Portfolio — An interactive portfolio built with Astro, Svelte 5, and WebGL / OGL.
• Digital Garden — My public knowledge system and experiments around AI collaboration, product building, and learning.

• Turn unclear needs into scope, constraints, acceptance criteria, and a working release.
• Use AI to accelerate research, implementation, and iteration without delegating final judgment or ownership.
• Review critical paths, test failure modes, and verify outputs before treating generated work as complete.
• Communicate trade-offs in product and stakeholder language, not only implementation details.

Product and frontend: TypeScript, React, Next.js, Vue, UI systems
Backend and data: Python, Node.js, PHP, SQL, PostgreSQL, Supabase
AI systems: LLM integration, RAG, structured outputs, tool calling, validation workflows
Delivery: Google Cloud, Docker, CI/CD, CMS and workflow integration

• Portfolio: jlstudio.xyz/levi
• LinkedIn: linkedin.com/in/li-wei-huang