Portfolio
Design Engineer · Frontend Lead
Figma to production: design systems, React, TypeScript, blockchain
01About
I work at the intersection of design and engineering, owning product problems from Figma to production code without handing off between the two.
My background is DeFi and blockchain infrastructure, which means I bring technical depth to domains most product designers approach from the outside. At Neptune Finance I built the design function from scratch: custom Figma component library, full design system, and every line of production TypeScript and Tailwind, while maintaining the engineering rigour required for live financial systems where on-chain state, wallet behaviour, and transaction reliability are non-negotiable.
I use AI tools (Cursor, Claude, and agentic workflows) as a core part of how I prototype and ship. I've directed fully agentic engineering flows, maintaining product and design ownership while accelerating implementation significantly.
02Work
03Experience
Representative roles, protocol work, and projects. Select an entry to open the full write-up in the drawer panel.
Professional Experience
Design Engineer / Frontend Lead. Full product ownership from Figma to production
Protocol / Ecosystem
Professional Experience
Professional Experience
Protocol / Ecosystem
Protocol / Ecosystem
Projects
Design Engineer / Frontend Lead. Cross-chain yield-to-Bitcoin conversion routing built at Cosmoverse Hackathon
Projects
Projects
Frontend Developer. Built the NFTFi lending, borrowing, and shorting interface
Projects
Design Engineer / Agent Orchestrator. Directed autonomous agentic engineering flow
Projects
Frontend Developer / Designer. Built a real-time 3D node and transaction visualizer
Projects
Frontend Developer. Developed a high-fidelity interactive DeFi credit card dashboard
04Stack
Tools and domains I work across most often.
React · TypeScript · Next.js · Tailwind CSS · Component architecture
Cursor · Claude · Agentic engineering flows · Figma AI · Local model experimentation
AI tools are a core part of how I prototype and ship, from directing agentic implementation flows to integrating AI into design iteration and code review.
CosmWasm contracts · Injective SDK · Wallet interactions · Transaction flows · Contract interface alignment
State synchronization · RPC/indexer aggregation · Caching · Render optimization · Reliability patterns
Technical scoping · Cross-functional execution · Design system implementation · Production deployment
05Contact
Looking for a design engineer who can own the path from Figma to production? I'm open to new opportunities and quick to reply.
© 2026 Logan Biesterfeldt
Designed & engineered by Logan · Built with Next.js & Tailwind CSS
Logan Biesterfeldt