welcome
I love building complex UI systems across mobile and web, especially when animations and graphics are at the core of the experience.
Selected Work
Ollin Arcade
A game that allows you to interact with your music library — skip straight to the chorus of every track, vibe with what hits, and save the ones you love. Built, designed, and shipped independently to the App Store.
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.
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.
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%
- Independently building Ollin — a cross-platform gamified productivity app with evolving avatars and task-based rewards, currently on TestFlight (React Native, Expo, TypeScript, Rive.js)
- Shipped Ollin Arcade to the App Store as sole engineer and designer — an indie Flutter iOS game, from Figma concept through App Store submission
- End-to-end CI/CD via Expo App Services for consistent iOS and web delivery
- Minor in Media, Arts, and Technology
- Coursework: Computer Programming for Media · Mobile Media · Computer Vision Applications I & II
Say Hello
Let's about your next web or mobile project!
marjoree.e.f@gmail.comBased in New York, NY