I’m Leon — frontend designer & fullstack developer. I build software the way you’d tune an old synth: by ear, by hand, until the signal feels alive. Under the warm glow sit real backends, AI pipelines and interfaces that hold up in production.
Interfaces at the intersection of aesthetics and logic — performant, intuitive, and strange enough to remember. Design is the signal path; everything else is noise.
I wire artificial intelligence directly into software — scrapers that qualify leads, agents that file the paperwork, pipelines that never sleep.
Business informatics by degree: real APIs, real data models, real deployments. Code that solves concrete business problems, not code for its own sake.
Music is the other half of the practice — sampling, tape loops, synthesis. It’s the same discipline as engineering: signal in, transform, signal out. Published under 404 Not Found Nation.
Why does this portfolio look like a piece of test equipment? Because that’s how I work: measure, tune, ship. The projects in the archive run real backends, call real models, and hold up in production — the warm glow is just how they’re presented.
OPEN THE ARCHIVE →An AI webscraper that hunts customer leads for website projects — it crawls the open web, qualifies prospects with LLM scoring, and returns a ranked call list. The machine listens so you don’t have to.
An API platform for bookkeeping — clean endpoints for invoices, reconciliation and automated records, so small businesses plug accounting into anything they already run.
Business informatics by degree, builder by temperament. I move comfortably between Figma-level design decisions and database-level architecture — and increasingly, between both of those and the model layer: AI scrapers, agent workflows, automated bookkeeping.
I care about performance the way a mastering engineer cares about headroom: obsessively, invisibly. Clean foundations, minimal load times, interfaces that rank and convert.
Off-screen: making music, travelling, and — for most of my life now — a skateboard.