Stephen Adeniji
Frontend engineer with three years of production work in Next.js, React Native and TypeScript. Chrome extensions when the right itch shows up.
About
Interfaces that feel good to use
I'm a frontend engineer based in Lagos with a thing for interfaces that actually feel good: responsive, animated, and built to last. The last three years I've been shipping across agencies, fintechs, and a handful of products of my own.
Web is home: Next.js, TypeScript, Tailwind. But mobile is where it gets interesting. I build with React Native and Expo, and there's something about shipping to a pocket-sized screen that keeps me excited. I also build Chrome extensions, because sometimes the browser itself is the product.
Stack
Selected work
4 of 7Things I've shipped
Client work, solo products, and the occasional extension.
Rumble Road
A free motorbike racing and brawling game for the browser, inspired by Road Rash. Race up to 14 rivals, punch them off their bikes, and dodge traffic, oil, spikes and lightning. Plays on a phone, a laptop or a controller.
Oct 2026 – PresentwebPrivvy Ledger
Privacy-first, offline expense tracker on Google Play. On-device AI receipt scanning, bank statement import, multi-currency and encrypted backups. No account, no server.
Apr 2026 – PresentmobileEzzymeans
Loan platform for salary earners offering quick access to funds at affordable rates.
Apr 2025 – PresentwebOikus
A data-led property marketplace that aggregates listings and offers verification to keep renters safe.
May 2025 – Presentweb
Experience
Where I've worked
Three years across agencies, fintechs, and startups.
Dec 2024 – Present
Frontend Engineer · Freelance
Building web and mobile products for small businesses and product teams. End-to-end ownership from setup through deployment.
Feb – Jun 2025
Frontend Engineer · Optisage
Built Optisage.ai with Next.js and TypeScript. Worked closely with design, backend, and product to ship features in an agile environment.
Nov 2024 – Apr 2025
Frontend Engineer · Cosonas
Built responsive web and mobile applications using Next.js and React Native for client projects across industries.
Aug 2023 – Sep 2024
Frontend Engineer · Voltwolf
Built and maintained user and admin dashboards for fintech products. Shipped features aligned with product goals and business needs.
Contact
Let's talk
Have a project, role, or rough idea you want to talk through? Email is the fastest way to reach me.