Marjoree Fargas

Frontend Engineer

React · TypeScript · Flutter · Design Systems

New York, NY

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 Labs · App Store2026
Ollin Arcade iOS App

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.

FlutterFigmaiOSApple MusicKit API
Download on App Store →
Ollin Labs · TestFlight2025 – Present
Ollin App

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.

React NativeExpoTypeScriptRive.jsSupabaseApple HealthKit API
View Project →
Professional · Illesteva2023 – Present
Illesteva POS System

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.

ReactTypeScriptShopify CLIGraphQL
Private Project

Experience

July 2023 – PresentNew York, NY
Frontend EngineerIllesteva
  • 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%
Est. 2025
Independent App StudioOllin Labs
  • 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
2014 – 2018Santa Barbara, CA
B.A. Media StudiesUC Santa Barbara
  • 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.com

Based in New York, NY