Hire the Best Kotlin Developers
in Nigeria

Experienced Senior Android Developer adept in all stages of advanced mobile development, with over 7 years of professional experience dedicated to building Android applications. Proficient in various technologies, such as Kotlin, Java, C#, and Swift. Well-versed in user interface design, testing methodologies, and debugging processes.

I'm Jeffery, a results-driven Software Engineer with over 5 years of experience building scalable mobile and frontend applications. I specialize in Flutter, React, and native Android (Kotlin/Java), delivering fast, responsive, and maintainable apps. Highlights of my experience: Built a high-performance Android launcher app from scratch using modern Jetpack libraries. Led frontend development at iKooK (UK-based startup) across Flutter mobile, React dashboard, and marketing site. Integrated critical features like Firebase, deep linking, CI/CD pipelines (GitHub Actions, Xcode Cloud), and analytics tools like AppsFlyer. Created InCrop, a unique image-cropping tool with a custom rendering engine. I bring not only solid technical skills but also strong communication, ownership, and attention to user experience. Whether you need a complete app or want to improve performance and stability, I can help. Let’s build something great together!

I am a software developer with an interest in cybersecurity that mainly uses Python for automation tasks/scripting and Kotlin for creating mobile applications. I am also capable of testing a wide range of software.

I am a highly experienced full-stack developer with over 15+ years experience in frontend, backend and mobile app development. In all I have worked on over 300 projects and can deliver high quality results within reasonable time and budget.

Is your mobile app crashing, behaving inconsistently, or failing after an API or SDK integration? I help businesses diagnose and fix problems in existing Android and iOS applications, with a primary focus on Android and Kotlin. My work includes: • Android and Kotlin bug fixing • Crash investigation and root-cause analysis • iOS troubleshooting and targeted fixes • REST API and third-party SDK integration • Authentication and data synchronisation issues • AI API integration for chat, text processing and automation • Performance, lifecycle and background-process problems • Maintenance and improvement of existing codebases I have worked as part of professional development teams, so I understand that fixing one issue is not enough if the change creates problems elsewhere. My approach is straightforward: I reproduce the issue, inspect the relevant code and logs, identify the actual cause, and make the smallest reliable change needed to solve it. I then test the affected workflow and explain clearly what was changed. I do not rush into rewriting an application before understanding the problem. When working with an unfamiliar codebase, I first learn how its existing components interact and preserve the parts that are already working. You can expect clear communication, realistic progress updates, and ownership of the task from investigation through completion. If you have a mobile app bug, an unstable feature, or an API, SDK or AI service that is not working as expected, send me the details. I will review the problem and tell you honestly how I would approach it.

Senior React Native | Expo | Supabase | Capacitor | Flutter | AI Mobile Apps | Lovable | Base44 | Claude Code Your mobile app shouldn't feel like a website inside a phone. If you're building a React Native app, converting a web application into iOS & Android, fixing an Expo or Supabase issue, migrating to Capacitor, or launching an AI-powered mobile product, you need someone who has solved these problems before not someone learning on your project. I help startups, SaaS companies, and founders build, optimize, migrate, and scale production ready cross platform applications that deliver native performance, clean architecture, and excellent user experiences. What I Offer ✔ React Native & Expo Applications ✔ Cross-Platform iOS & Android Apps ✔ Web App to Mobile App Conversion (Capacitor / React Native) ✔ Supabase Backend Architecture & Authentication ✔ AI-Powered Mobile Applications ✔ Flutter Applications ✔ Next.js & React Applications ✔ Firebase Integration ✔ REST API & GraphQL Integration ✔ PostgreSQL & Database Design ✔ Mobile App Architecture ✔ Performance Optimization ✔ Offline-First Applications ✔ Camera, Bluetooth & Native Device Features ✔ Push Notifications ✔ App Store & Google Play Deployment ✔ App Store Review & Google Play Submission ✔ Bug Fixes, Refactoring & Feature Development Technologies I Work With Frontend • React Native • Expo • React • Next.js • Flutter • TypeScript • JavaScript Backend • Supabase • PostgreSQL • Firebase • Node.js • REST APIs • GraphQL • Capacitor • Native Modules • Push Notifications • Authentication • Offline Storage • Camera Integration • BLE Integration AI Development • Claude Code • AI-Assisted Development • AI SaaS Applications • AI Mobile Apps Why Clients Hire Me The projects I work on usually involve one or more of these challenges: • React Native performance issues • Expo build or startup crashes • Supabase authentication problems • Mobile architecture improvements • Web app to native mobile conversion • App Store or Google Play submission • Production bug fixing • API integrations • Performance optimization • Scaling an existing application Rather than applying quick fixes, I focus on writing clean, maintainable, production-ready code that is easy to extend as your product grows. Recent Client Results ★★★★★ Supabase SaaS Architecture "Imole was so easy to work with truly incredible dedication to my project, outstanding urgency and understanding. I'm delighted with his work and moving forward with another project immediately." ★★★★★ React Native + Expo + Supabase "Exceptional React Native developer. Diagnosed my Expo crash before touching a single line of code, fixed it the same day, and delivered exactly what was promised. Zero surprises." ★★★★★ Capacitor Mobile Conversion "Converted my React/Vite web app into a native Android application using Capacitor exactly as needed. Clear communication, no bugs, no revisions, and a fully working APK delivered on the first attempt." How I Work I believe great software comes from great communication and strong engineering not guesswork. You can expect: • Clear communication • Fast response times • Clean, maintainable code • Scalable architecture • Reliable delivery • Production-ready solutions • Long-term support Whether I'm joining an existing codebase or building from scratch, I take ownership of the technical work and focus on delivering software that's reliable, scalable, and ready for real users. If you're looking for a developer who can build, optimize, migrate, or maintain React Native, Expo, Supabase, Capacitor, Flutter, or AI-powered mobile applications, I'd be happy to discuss your project and recommend the best approach. AI native platform, AI native application, Web to Mobile, Full Stack AI Developer, AI MVP developer, AI SaaS developer, Lovable, Lovable expert, Lovable MVP, Lovable bug fix, Lovable to Claude Code migration, Progressive Web App, PWA to ios android app, PWA to Native mobile app, Base44, Base44 to WordPress, FlutterFlow, OpenAI Codex, Bolt new, v0, Cursor, Emergent sh, Claude Cowork, Claude Code, Claude Code expert, Claude Code setup, Claude Code MCP, CLAUDE.md, Anthropic Claude, Claude API OpenAI API, LLM, Supabase, Supabase Auth, secure auth, RLS, MERN stack, PostgreSQL, Postgres, MongoDB, MySQL, Firebase, Node.js, E commerce Website, Express, NestJS, React, Next.js, TypeScript, JavaScript, React Native, Flutter, Expo, Dart, Swift, Kotlin, Java, Tailwind CSS, Stripe, RevenueCat, Google Play Billing, in app purchases, App Store Connect, AWS, Google Cloud, DigitalOcean, CI/CD, GitHub, Capacitor, TestFlight, Jarvis Ai, n8n, WhatsApp Cloud API, Google Sheets API, MCP, hybrid mobile app, App Store submission, Google Play submission, App Store deployment, Google Play deployment, Google Play Console, App Store Connect, resolve App Store rejections, ASO, App Store Optimization, App Store screenshots, App Store icon