Senior Software Engineer
Union Systems Limited
Frontend Team Lead
Lead the React.js frontend engineering team in building secure, scalable, and high-performance web applications.
- Front-End Development
- React Native
- React.js
- TypeScript
Senior React & React Native · Lagos, Nigeria
5+ years building high-performance React & React Native apps for web and mobile—AI products, marketplaces, and experiences used across Africa, North America, and beyond.
Experience
From fintech and banking to edtech and remote US product teams—roles where I've led frontend delivery and shipped production apps.
Union Systems Limited
Frontend Team Lead
Lead the React.js frontend engineering team in building secure, scalable, and high-performance web applications.
Developed mobile and web applications with a focus on user experience and accessibility. Sole frontend engineer for the BONNEE app, delivering high-quality releases end to end.
Sterling Bank
Built and maintained React and React Native interfaces for banking digital products used by customers across Nigeria.
ITSkillsCenter
Developed responsive frontend interfaces and grew foundational skills in modern web development and UI implementation.
Also shipped with
Soar Digital
Tremendoc
AlphaCX
Paysync
About
Developer, consultant, and creator behind CODE UI ANDY—focused on shipping interfaces people actually enjoy using.
I'm Andrew Okeke, also known as CODE UI ANDY—a Senior React.js & React Native developer based in Lagos, Nigeria, with 5+ years building high-performance web and mobile apps. I lead frontend teams, ship TypeScript-first products, and consult on UI that holds up in production. As a YouTuber, I share practical lessons on React, React Native, and modern frontend craft.
Portfolio
A curated set of web and mobile products—AI platforms, marketplaces, and apps in production today.
AI-driven investor relations platform that automates routine investor questions with instant, accurate answers sourced from public filings—helping IR teams focus on strategy instead of admin.
Clothing swap mobile app I built—list pieces from your closet, earn Swap Coins, and trade for new-to-you fashion without buying or selling. Available in the USA market only.
Next-generation vision testing for eye care clinics—the RVF200 headset delivers portable, patient-friendly visual field exams with multilingual guidance and workflows built for modern optometry and ophthalmology practices.
24/7 AI customer support platform—delivers fast, reliable responses with an intelligent system that cuts wait times and keeps support seamless day and night. Includes sign-in and onboarding flows with email and Google authentication.
Fan engagement landing experience for creators who want deeper connections with their audience—bridging the gap between fans and influencers while opening new ways to grow income.
B2B FMCG retail mobile app I worked on—helps shop owners restock from 900+ products, place secure orders, pay with flexible options, and track fast delivery. Built for OmniRetail across Nigeria and beyond.
Tremendoc Telemedicine Platform offers a 24 hours holistic virtual experience that provides accessible and affordable health care services through telemedicine
Connecting African Freelancers & Global Businesses
E&E app provides users quick and seamless shipment creation from the comfort of their homes and Offices, obliterating the need to go to logistic offices for forwarding or pick-ups of items to be dispatched. Once a request is made, the app locates a delivery courier nearest to the request and assigns the delivery request for pickup.
Contact
Building something new? Tell me about your product—I usually reply within 24 hours.