Frontend Engineer · Design Systems
Engineering Craftsmanship
Frontend Engineer specializing in complex UI systems across commerce, mobile, and interactive tooling.
At Illesteva, I led development of a TypeScript component system, built a React Shopify POS application that reduced checkout time 38%, and shipped a configurable lens workflow that increased custom orders 18% while automating fulfillment communication with optical labs.
I also created Ollin Labs, where I recently shipped Ollin Arcade to the App Store with more to come. I’m looking for opportunities where frontend architecture and interaction design are treated as core engineering work.
Selected Work
Ollin
Cross-platform gamified productivity app rewarding task completion with evolving avatars and bonuses. Sole engineer and designer — built animated reactive avatars with Rive.js state machines, designed the relational schema, and set up end-to-end CI/CD for iOS and web releases. Currently on TestFlight.
Illesteva POS
Private React POS app built with Shopify CLI — pre-validated custom option sets, metafield integrations, and Shopify Admin extensions for receipt printing and product data export. Cut checkout time by 38% and reduced operational error rate across retail locations.
Ollin Arcade
Flutter iOS app shipped to the App Store as sole engineer and designer. Handled full Figma design, Flutter development, and end-to-end App Store submission independently.
Experience
- Authored internal docs for a component-driven design system adopted across e-commerce and marketing teams — enabling cross-team consistency and faster iteration
- Built a private React POS app with Shopify CLI, pre-validated custom option sets, and metafield integrations — cut checkout time by 38% and reduced operational error rate
- Developed a lens customization flow from Figma prototype to production — increased custom sunglass orders by 18%
- Building Ollin — a cross-platform gamified productivity app rewarding task completion with evolving avatars (React Native, Expo, TypeScript, Rive.js) — currently on TestFlight
- Shipped Ollin Arcade to the App Store as sole engineer and designer — a Flutter iOS app, from Figma through App Store submission
- Implemented end-to-end CI/CD pipelines via Expo App Services for consistent iOS and web releases
- Minor in Media, Arts, and Technology
- Coursework: Computer Programming for Media · Mobile Media · Computer Vision Applications I & II
Say Hello
I'm looking for Design Engineer or Creative Technologist roles at companies where engineering and craft are treated as the same discipline. Based in NYC — open to hybrid and remote. Or just say hi.
marjoree.f@gmail.comBased in New York, NY