At Codefinity, I joined the core learning team and built the frontend for an AI hint assistant inside coding exercises. It streams LLM answers through Server-Sent Events, and after two months it was serving about 35K hints a week.
I also built the checkout UI around Stripe Payment Element, supporting Apple Pay, Google Pay and in-page 3D Secure. Mobile checkout went from three screens and about 90 seconds to one screen in under 30.
With our designer, I built a shared library of about 40 responsive React components, documented in Storybook. I also reduced first-load JavaScript on the exercise page from 480 KB to 340 KB.
Earlier at Codefinity, as a Junior Frontend Developer, I built course landing pages and the course editor, and covered the editor with 150+ Jest and React Testing Library tests. I use Playwright and Jest in GitHub Actions, and work in a remote, distributed team.
