This is a full-time hybrid role for a Senior Mobile Developer, based in Lagos hybrid, with 3 days per week in the office. Mobile is where Nigerian betting happens, and our app is the product for most customers. You'll build and own the React Native app across Android and iOS live odds, bet slip, wallet, social feed, and copy-betting with Android on mid-range devices as the primary reality: limited memory, patchy data, and users who will uninstall anything heavy or slow. This is a hands-on role for a mobile engineer who has shipped and maintained production apps at scale and sweats app size, startup time, and crash rates.
What You'll Do
Build and own core app experiences in React Native across Android and iOS: sportsbook, bet slip, wallet, account, and social/copy-betting features
Implement real-time features live odds, in-play betting, cash-out, and push-driven updates that stay correct through network drops and reconnects
Optimise relentlessly for mid-range Android: app size, cold start, memory, battery, and data usage
Handle money-critical flows with care: idempotent bet submission, deposit/withdrawal states, and secure session handling
Own release engineering: build pipelines, staged rollouts, OTA updates, and Play Store / App Store submissions
Monitor crash rates, ANRs, and performance metrics, and drive them down continuously
Integrate push notifications, deep linking, and in-app messaging
Write native modules (Kotlin/Swift) when React Native needs help
Collaborate with backend engineers on efficient BFF contracts designed for mobile constraints
Mentor mid-level mobile engineers and set standards for the mobile codebase
What We're Looking For
5+ years of mobile engineering experience, with 3+ years in React Native shipping production apps
Apps live in the Play Store / App Store that you can point to and explain your role in
Strong TypeScript, plus working knowledge of the native layer (Kotlin and/or Swift)
Proven performance optimisation experience on low/mid-range Android devices
Experience with real-time data in mobile apps (WebSockets, push) and robust offline/reconnect handling
Solid grasp of mobile security for apps handling money: secure storage, certificate pinning, session management
Experience with mobile CI/CD, staged rollouts, and crash/performance monitoring (Sentry, Firebase Crashlytics, or similar)
Strong testing habits and clean, maintainable codeNice to Have
Experience building betting, gaming, fintech, or wallet apps
Experience shipping apps for African markets and data-constrained users
Familiarity with OTA update tooling (CodePush/EAS Update)
Play Integrity / App Attest and anti-tampering experience