Aardvark automates legal and financial data with generative AI. The models produce the data; my job was the surface where people verify and correct it — at a scale where a regular table gives up: tens of thousands of rows, all editable, in the browser.

Spreadsheet-grade editing means spreadsheet-grade details: units, dates and long text cells each needed their own editing behavior, and filtering started client-side then moved to the backend once the datasets outgrew the browser. Performance at that scale erodes silently, one innocent PR at a time — the Playwright performance tests in CI exist precisely for that, with a fully automated pipeline holding a two-week release cadence for almost two years.

Sole front-end in a three-person product team, I also took over design after the designer's first drafts — up to a complete redesign once the product had outgrown them, dark mode included — sparing the company a dedicated design position. Built with React Native Web and TypeScript: a solid abstraction for web-only today, with the door open to native apps tomorrow.