Principal Android Engineer

I own the KoBox Android client end to end for a licensed Nigerian VOD and short-drama service with more than 100K Play Store installs. My responsibilities include playback, offline downloads, purchase flows, security hardening, release management, and Play Store compliance. I built short-drama content flows with coin-priced episode bundles, ordered unlocking, watch progress, cross-device resume, bookmarks, deep links, and full-screen playback.

I delivered creator and UGC capabilities, including challenge campaigns, paginated leaderboards, prizes, push notifications, a three-step creator onboarding flow, SmileID verification, and creator wallet states. I implemented accessible payment flows through coin-wallet micro-billing, MTN MADAPI airtime payments, and multi-bank USSD payments.

I built the FreeTV Android app for Nigeria's national free-to-air TV platform, including live channels, programme guide, catch-up, DVR, Chromecast, Google and email sign-in, and idempotent live-viewership tracking. I also built Node.js/Koa APIs and Rails reporting for unique viewers and watch time.

I optimize streaming for 2G networks and entry-level TECNO and INFINIX devices through Media3 tuning, CDN-edge delivery, bandwidth measurement, low-RAM player settings, deferred startup work, and OEM-specific fixes. I coordinate Android, iOS, Flutter, backend, and web delivery, define API contracts, and contribute to Flutter, TypeScript, Next.js, and backend initiatives.

I scaled the Android client across seven African markets—Rwanda, Congo-Brazzaville, Congo-Kinshasa, Guinea-Conakry, Cameroon, Ivory Coast, and Benin—to more than one million monthly users. I shipped a multi-flavour Gradle architecture that produced carrier-branded apps from one codebase while maintaining feature parity and reducing market-specific release effort.

I led mobile-money, airtime, and carrier-billing checkout integrations, including MTN MoMo, and extended Rails charging services for segmented subscription plans. I tuned ExoPlayer for low-end hardware and 2G/3G connectivity, implementing adaptive bitrate behavior, buffering, recovery, Widevine DRM, Chromecast with a custom receiver, picture-in-picture, programme schedules, and offline downloads.

I built the Android TV client for D-pad navigation and implemented a companion phone remote using Google Nearby for login hand-off, playback controls, and voice search. I also worked on referral and rewards capabilities, COVID-19 information and quiz products, and Node.js-based wallet and webhook services.

As Android technical lead, I reviewed and merged code, guided architecture, managed staging and QA sign-off, triaged crashes across fragmented devices, and delivered REST endpoints and admin panels using Node.js/Koa.js and Ruby on Rails.

I built an agri-market POS application for an Agricultural Produce Market Committee. The application supported token management, market fees, settlements, and thermal receipt printing on TVS printers, and I continued maintaining it through 2023.

I built Was@ (Atlog), a social check-in product with historical and planned check-ins, timelines, social connections, likes, follows, and Facebook login. I began this work as freelance development for Watermelon in 2017.

I also started work on AfrikaStream's Android application as a Watermelon client project in April 2019 before transitioning to the project full time.

I improved runtime performance for a live production Android application and focused on strengthening operational reliability.

I introduced Firebase, BugSee, Timber, and Mixpanel tooling to improve crash visibility, logging, analytics, and defect turnaround time.

I developed native Android applications in Java across the full application lifecycle.

I integrated PayPal, Paytm, Mobikwik, and Authorize.Net payment solutions, and implemented POS printing logic for business workflows.

I built foundational Android applications while learning the complete mobile development lifecycle.

My work covered implementation, testing, debugging, and delivery of native Android features.

Completed a Bachelor of Engineering degree in Information Technology.

Completed a Diploma in Information Technology.