Hi, I'm Johnnie 👋
I'm a full-stack software engineer specializing in React.js, Next.js, and React Native — building fast, accessible, and visually stunning digital products for web and mobile. With 5+ years of experience across SaaS platforms, fintech, event tech, and ride-hailing, I turn complex ideas into polished, production-ready applications.
Ondo State, Nigeria (Remote Worldwide)
Open to Full-Time Roles & Contracts
5+ Years
Experience
15+ Projects
Shipped
4 Core Domains
SaaS, Mobile, Fintech
About me
Curious about me? Here you have it:
I'm a passionate full-stack software engineer specializing in React.js, Next.js, and React Native. I build products that are fast, accessible, and visually polished — from complex SaaS dashboards and event platforms to mobile apps and algorithmic trading systems.
I started my development journey in 2019. Over the past 5+ years, I've worked across a broad range of domains: event management (Louma), fintech (Banky), ride-hailing (AllRide/Motion), healthcare (Digicare), anti-counterfeiting (VerifyNG), and music distribution (Ployco). I enjoy bridging design and engineering to ship products that feel as good as they work.
Beyond client work, I build algorithmic trading bots in Python — including an institutional-grade XAUUSD grid trader powered by MetaAPI. I'm driven by curiosity and the challenge of turning complex problems into elegant, working solutions.
You can find me on Twitter where I share tech insights, or on GitHub where I build in public.
Finally, some quick bits about me.
- Full-stack & mobile engineer
- 5+ years of experience
- Full-time freelancer
- Algo trader & bot builder
GitHub & Open Source
Active Code Contributions
React • React Native • Python • TypeScript
Experience
Here is a quick summary of my most recent experiences:
Lead Software Engineer / Software Tester
Dec 2024 - Present
- Architected and led the redesign of Louma's event management platform using React, Next.js, and Pure CSS, increasing user engagement by 60% and improving customer experience scores by 30%.
- Integrated Firebase backend services for real-time data synchronization, enabling seamless ticket purchases, attendee check-ins, revenue tracking, and live analytics dashboards.
- Implemented end-to-end event creation workflows, allowing organizers to set up branded event pages, customize ticket tiers, and manage capacity limits in real time.
- Built QR code check-in system with real-time organizer notifications, improving event flow and reducing manual check-in time significantly.
- Integrated Telnyx SMS blast and communication tools, replacing Twilio — enabling organizers to send targeted messages to attendees at scale.
- Built iOS Live Activities integration for real-time event updates on the lock screen of attendees' iPhones.
- Optimized CI/CD pipelines and testing (unit, integration, and end-to-end) to accelerate deployment cycles by 75%, maintaining high-quality standards while shipping features faster.
Frontend developer
Aug 2024 - Present
- Contributed to the development of Verify.ng, a multi-platform ecosystem aimed at combating counterfeit products and improving consumer protection in Nigeria.
- Built the main consumer-facing platform (staging.verifyng.com) with React/Next.js, enabling product authenticity checks and empowering users to report fake goods directly.
- Developed the manufacturer portal to allow brands to register products, track distribution, and receive direct consumer feedback in a streamlined dashboard.
- Implemented the distributor portal, giving distributors secure registration flows and product verification tools that strengthen supply chain transparency.
- Collaborated on the FCCPC portal, providing regulators with an interface to monitor complaints, oversee investigations, and enforce compliance against counterfeit trade.
- Built reusable, responsive UI components across all portals, ensuring consistency in design, accessibility, and mobile-first usability.
- Partnered closely with backend engineers and stakeholders to integrate REST APIs into the frontend, enabling real-time product verification and data synchronization across platforms.
Frontend developer
Dec 2023 - Aug 2024
- Ployco is a music distribution and label services platform designed to support independent artists and labels.
- Collaborated with UX/UI designers and backend developers to build a revenue-sharing engine that automatically calculates and allocates 80% of royalties to artists.
- Conceptualized and implemented new designs for Ployco website and Streamlink, a smart promotional link tool for tracking engagement across platforms.
- Participated in agile processes including sprint planning, code reviews, and task distribution.
- Worked on enterprise-level projects for a variety of clients.
Web developer
Apr 2021 - Mar 2023
- Designed and implemented responsive financial dashboards using React and Tailwind CSS, ensuring seamless performance across devices.
- Integrated RESTful APIs to display real-time banking data, improving user interaction and data accuracy.
- Built reusable UI components for forms, modals, and charts, reducing development time for new features by 30%.
Work
Some of the noteworthy projects I have built:
Louma Web
Loumaapp is a full-featured event management platform — from ticketing and branded event pages to QR check-ins, SMS blasts, attendee surveys, and iOS Live Activities integration.
React
Next.js
TypeScript
Pure CSS
Firebase
Telnyx
DigiCare — Digital Healthcare Ecosystem
Inclusive digital healthcare platform bringing AI-powered support, mobile access, IVR technology, and verified medical professionals together — democratizing healthcare guidance and preventive education across Africa.
React
Next.js
TypeScript
Tailwind CSS
IVR Tech
Pitchally
Artist development platform and community hub landing page, aimed at musicians across Sub-Saharan Africa.
React
Tailwind CSS
Badger — Data & Internet Control
Mobile and web platform that empowers users to monitor internet usage, block hidden background data drains, stop suspicious hosts, and take complete control of their mobile data experience.
React Native
Next.js
TypeScript
Tailwind CSS
Data Analytics
Alloh — Farm Produce Marketplace
Agribusiness marketplace connecting buyers directly with local farmers for fresh organic vegetables, fruits, crops, and dairy products — supporting local agriculture with direct savings.
React
Next.js
TypeScript
Tailwind CSS
E-Commerce
Testimonials
Nice things people have said about me:
"Johnnie built our event platform from the ground up — from ticketing and check-ins to SMS blasts and iOS Live Activities. His technical execution and speed to market were exceptional."
Louma App Team
Product Lead - LoumaApp (Event Tech)
"Working with Johnnie on our identity verification engine was a seamless experience. He delivered high-performance React Native and web components with top security standards."
CEO
Head of Product - Verify (Identity Platform)
"Johnnie transformed our vision for music distribution into a slick, robust web application. Exceptionally skilled full-stack developer who consistently delivers high quality."
Ployco Executive
Founder - Ployco (Music Distribution)
Get in touch
What’s next? Feel free to reach out to me if you are looking for a developer, have a query, or simply want to connect.
You may also find me on these platforms!