About Me

I'm a software engineer at YIP Online, where I build React Native apps for iOS and Android. I care about clean user experiences and code that stays maintainable as products grow.

At YIP Online I build and maintain production mobile apps, including a reusable white-label setup that lets one codebase serve multiple brands. I integrate REST APIs across authentication, product, cart, and checkout flows, and work with product, design, and QA to ship client-facing releases.

I also work across the full stack: React and Next.js on the frontend, Node.js and Firebase on the backend. I've built AlutaMarket, a full-stack marketplace with seller inventory, ordering, payments, and reviews, and I take on freelance web and mobile projects alongside my main role.

Oluwatosin Ayinde

Experience

Where the work happens.

Nov 2025 - Present

Mobile App Developer

YIP Online
  • Build and maintain React Native apps for Android and iOS, including Rejoyly, a peer-to-peer marketplace live on the App Store and Google Play
  • Built a reusable white-label setup so one shared codebase supports customised deployments for multiple brands
  • Integrated REST APIs across authentication, product, cart, and checkout flows, including state handling and validation

React Native · TypeScript · Redux Toolkit · REST APIs · Firebase · Git

Feb 2024 - Present

Freelance Mobile & Full Stack Developer

Bincom Dev Center
  • Built eMigr8 Visa Companion with React Native and Expo, live on the App Store and Google Play: visa routes, coaching, partner marketplace, premium content, and in-app subscription billing
  • Built the supporting React and TypeScript web apps, including the admin dashboard and partner and affiliate portals
  • Integrated third-party APIs, took part in code reviews, and worked directly with the client to gather requirements and demo features

React Native · Expo · React · TypeScript · Firebase

Jan 2025 - Jun 2026

Full Stack Developer

Pyramid Tech Lab
  • Built AlutaMarket: seller inventory management, product discovery, ordering, reviews, and payments
  • Developed Node.js services for authentication and product management, with Firebase for storage and real-time sync
  • Integrated a payment gateway and built responsive React and Tailwind CSS interfaces for mobile-friendly commerce

React · Tailwind CSS · Node.js · Firebase

Jan 2023 - Dec 2024

Frontend Developer

D-Degree Digital Hub
  • Built responsive, accessible frontends with a maintainable component structure, from UX wireframes and prototypes
  • Took part in code reviews and cross-team delivery to keep frontend code consistent and releases stable

React · JavaScript · Tailwind CSS · PHP

Skills

Technologies I use regularly across mobile and web projects.

Mobile Development

React NativeExpoRedux ToolkitMobile UI/UX

Frontend Development

React.jsNext.jsTypeScriptJavaScript (ES6+)Tailwind CSS

Backend Development

Node.jsPHPRESTful APIsMySQLMongoDBFirebase

Tools & Technologies

Git & GitHubJest/TestingPostmanFigma