Qayyum O.

Full-stack and React Native engineer who builds intuitive, responsive interfaces for web and mobile, and the backends that power them.

What I do:

• Design and build clean, easy-to-use mobile apps for iOS and Android with React Native and Expo

• Build fast, responsive web applications with Next.js, React, TypeScript and Tailwind CSS

• Develop REST APIs and server logic with Node.js and Express, backed by MongoDB and PostgreSQL

• Integrate payments, authentication, push notifications and real-time features

• Ship and maintain apps in production, including Google Play releases through EAS

Tarra is my strongest proof. I built it alone from a blank repo for OAU's 40,000+ student community: a campus marketplace with listings, service bookings, a multi-role account system and a payment escrow flow built on Flutterwave subaccounts. It's live on Google Play with a 4.5-star rating, and I designed every screen, API and data model behind it.

I also interned at AFEX, where I worked with senior engineers on SmartLease, a blockchain-backed land management platform built with Next.js, Node.js and PostgreSQL.

My side projects include ChatHub, a real-time social app with WebRTC voice and video calls, and Exquisite Wears, an e-commerce platform with Paystack payments and an admin dashboard.

I care about interfaces people understand without instructions, code that's easy to maintain, and products that hold up with real users.