Opeyemi User

Key engineer on the 2026 full app redesign and rebrand of the consumer banking app, re-architecting a legacy React Native codebase into a modern Expo + TypeScript stack. Build Swift and Kotlin native modules and bridging layers, and ship features and performance optimizations across iOS and Android.

Retained as contract engineer following two years full-time; own ongoing feature development, maintenance, and releases for the Meomind app. Maintain and extend Swift native modules and the React Native bridging layer.

Contract mobile engineer on the EverSelf (formerly Bariendo) consumer app, built with React Native and Expo. Refactored and optimized the codebase, led the app redesign through rebrand, and delivered a feature-complete build now in final internal beta.

Developed and designed the Meomind 2.0 application, driving a 60% increase in user engagement and growth in app downloads. Reduced app load time to under 2 seconds, built Swift native modules, set up CI/CD, and led the front-end team in translating mockups into implementation.

Collaborated with cross-functional teams to design and develop new features meeting business requirements. Optimized application performance, contributing to a 15% increase in app store ratings, and implemented accessibility standards resulting in a 20% increase in users with disabilities accessing the app.

Created the mobile template and standard codebase architecture, improving code quality and reducing bugs. Led the design and implementation of app v3 using React Native, owned App Store and Google Play deployments, and built automated test suites using Jest and Mocha.

Architected the gaming app module and set up the CI/CD structure for deployments. Integrated Google Maps API and Firebase Cloud Messaging, implemented push notifications that increased mobile e-commerce app usage by over 40%, and launched and iterated 15+ design versions across mobile, desktop, and tablet.

Built a hybrid mobile streaming application in React Native providing real-time access to movies in and out of cinemas. Led a team of two to deliver the MVP and core functionality within two months, and implemented RESTful API integrations and third-party libraries.

Joined as the first web developer; engineering grew to a five-person team, where I founded and led the mobile team. Spearheaded the migration from a legacy Cordova/PhoneGap stack to React Native, and built and maintained web and mobile applications for enterprise clients using React and React Native.

Completed the Python for JavaScript Developers course in 2026.

Completed the Generative AI for Beginners course in 2024.

Pursued a Bachelor of Technology in Computer Science, completing the program in 2016.

Completed the Master CI/CD for React Native course.

Completed the React - The Complete Guide course covering Hooks, React Router, and Redux.