Hire the Best Kotlin Developers
in Nigeria

Clients rate our Kotlin developers
Rating is 4.8 out of 5.
4.8/5
Based on 103 client reviews
Imole B.

Ondo, Nigeria

$10/hr
5.0
5 jobs

๐—œ๐—บ๐—ฎ๐—ด๐—ถ๐—ป๐—ฒ ๐˜๐˜‚๐—ฟ๐—ป๐—ถ๐—ป๐—ด ๐˜†๐—ผ๐˜‚๐—ฟ ๐˜„๐—ฒ๐—ฏ ๐—ฎ๐—ฝ๐—ฝ ๐—ถ๐—ป๐˜๐—ผ ๐—ฎ ๐—ฟ๐—ฒ๐—ฎ๐—น ๐—ถ๐—ข๐—ฆ & ๐—”๐—ป๐—ฑ๐—ฟ๐—ผ๐—ถ๐—ฑ ๐—ฎ๐—ฝ๐—ฝ ๐—ป๐—ผ๐˜ ๐—ฎ ๐˜€๐—น๐—ผ๐˜„ ๐˜„๐—ฒ๐—ฏ๐˜ƒ๐—ถ๐—ฒ๐˜„, ๐—ป๐—ผ๐˜ ๐—ฟ๐—ฒ๐—ท๐—ฒ๐—ฐ๐˜๐—ฒ๐—ฑ ๐—ฏ๐˜† ๐—”๐—ฝ๐—ฝ๐—น๐—ฒ, ๐—ฎ๐—ป๐—ฑ ๐—ป๐—ผ๐˜ ๐—น๐—ผ๐˜€๐—ถ๐—ป๐—ด ๐˜‚๐˜€๐—ฒ๐—ฟ๐˜€. Right now, most SaaS founders and businesses are losing users and revenue because their apps are not optimized for mobile, their App Store submissions get rejected, their Stripe or Supabase setup breaks on mobile, or their AI-powered systems are not working as expected. Thatโ€™s where I come in. I help you convert, build, fix, and scale high-performance mobile apps and AI SaaS systems using Claude Code, React Native Expo, OpenClaw, and modern vibe coding tools without trial and error. โš ๏ธ If Youโ€™re Experiencing Any of These: โŒ Your web app needs to be converted to iOS & Android โŒ Apple keeps rejecting your app or it behaves like a webview โŒ Stripe payments or Supabase auth not working on mobile โŒ Your Lovable, Replit, or Base44 app is broken or incomplete โŒ Your AI SaaS or automation system is not performing โŒ Push notifications, offline mode, or native features missing ๐Ÿ‘‰ Youโ€™re losing users, retention, and revenue every single day. โœ… ๐–๐ก๐š๐ญ ๐ˆ ๐ƒ๐จ (๐€๐ง๐ ๐ƒ๐จ ๐๐ž๐ญ๐ญ๐ž๐ซ ๐“๐ก๐š๐ง ๐Œ๐จ๐ฌ๐ญ): ๐Ÿ”ฅ Web App to Mobile App Conversion Done Right No weak webviews. I convert your web app into a real mobile app using React Native, Capacitor, or Expo with native performance and smooth UX. ๐Ÿ”ฅ AI SaaS & MVP Development That Actually Works I build scalable AI SaaS apps and MVP platforms using Claude Code, OpenClaw, Gemini, and modern stacks designed for real-world usage and growth. ๐Ÿ”ฅ Vibe Coding & AI App Development From Lovable, Replit, and Base44 apps to full AI-powered systems, I fix, rebuild, and optimize apps using advanced AI assisted development tools. ๐Ÿ”ฅ Mobile App Deployment & Store Approval I handle App Store and Google Play submission, fixing rejection issues, optimizing performance, and ensuring your app gets approved and live. ๐Ÿ”ฅ OpenClaw Automation & Backend Systems I build smart automation workflows, API integrations, and backend systems that reduce manual work to your business operations. ๐Ÿ’ฐ ๐–๐ก๐š๐ญ ๐˜๐จ๐ฎ ๐†๐ž๐ญ: โœ”๏ธ High-performance mobile apps (iOS & Android) โœ”๏ธ Faster App Store approval & successful deployment โœ”๏ธ Working Stripe, Supabase, and backend integrations โœ”๏ธ AI-powered SaaS systems that scale with your business โœ”๏ธ Clean UI/UX with smooth performance and real native experience โœ”๏ธ Less manual work, more automation, more revenue ๐Ÿง  ๐–๐ก๐ฒ ๐‡๐ข๐ซ๐ž ๐Œ๐ž? Most developers: โŒ Build slow webview apps โŒ Break features during conversion โŒ Donโ€™t understand deployment or AI systems I donโ€™t. I understand both: โœ”๏ธ Mobile app architecture (what gets approved & performs well) โœ”๏ธ AI SaaS systems & automation (what actually works in production) That combination is why my clients donโ€™t come back saying ๐Ÿ‘‰ โ€œItโ€™s not working.โ€ โšก Letโ€™s Be Direct: If your app is not optimized for mobile, not deployed properly, or your AI system is not workingโ€ฆ You are already losing users, growth, and revenue every single day. ๐Ÿ“ฉ Next Step: Send me a message or invite me to your job. Iโ€™ll quickly review your project and tell you: โœ”๏ธ Whatโ€™s wrong โœ”๏ธ Whatโ€™s missing โœ”๏ธ Whatโ€™s blocking performance โœ”๏ธ How to fix it fast No fluff. Just results. ai saas development, ai web app, ai app development, ai integration, ai agent systems, claude code, claude cowork, E commerce Website gemini ai, vibe coding, lovable ai app, replit app, base44 app, react native developer, react native expo, flutter app, mobile app development, ios android app, web app to mobile app, pwa to ios android, app conversion, app deployment, app store deployment, google play deployment, firebase, push notification, mvp app development, api integration, supabase, postgresql, authentication system, stripe integration, push notifications, offline mode, n8n automation, backend automation, app debugging, fix existing app, Progressive Web App, production ready app, next js, node js, mern stack, full stack development, frontend development, backend development, cross platform mobile app, hybrid mobile app, android app developer, ios app developer, ai saas mvp, ai web application, ai chatbot, api development, web developer, webhook integration, supabase auth, firebase auth, real time database, vercel deployment, cloud deployment, mobile app ui ux, dashboard, admin panel, crm system, booking system, real estate, ai video, higgsfield ai, stripe, firebase, supabase, website migration, lovable to ios, android kotlin, revenuecat, despia, capacitor, ionic angular, codex, react native app, app publish, pwa, vpn app, chrome extension development, ai video generation, App Store submission,Google Play deployment, fix app rejection, PWA to mobile app, Base44 developer, Lovable developer, Bubble developer, Replit developer, Open Claw developer, Vibe Coding developer, No code developer, cordova, polymarket tradind bot, kalshi bot, hermes.

  • iOS Development
  • Android App Development
  • Website to Mobile App Conversion
  • n8n
  • Automation
  • Website Migration
  • Website Plugin Installation
  • Website Prototyping
  • Website Integration
  • API Development
  • AI Agent Development
  • AI App Development
  • Chatbot Development
  • Full-Stack Development
  • Supabase
  • React Native
  • Replit
  • Firebase
  • Native App Development
  • Mobile App Development
Samson E.

Ikeja, Nigeria

$15/hr
5.0
13 jobs

Is your app idea still sitting in notes, stuck in FlutterFlow, or already built but not working the way users expect? Either way, you are in the right place. Hello! I'm Emmanuel. A Flutter Developer, FlutterFlow Developer, AI App Developer, and Mobile UI UX Designer building clean, scalable mobile apps for startups, SaaS founders, coaches, marketplaces, service businesses, and teams. I do not hand off pretty screens that break when real users touch them. Every app I build is structured around the real product goal: clear user flow, smooth onboarding, secure backend logic, fast performance, and a mobile experience people can trust. Here's what that looks like in practice: ๐Ÿš€ Built FlutterFlow app systems with Firebase authentication, Firestore databases, user roles, dashboards, and backend workflows. ๐Ÿš€ Converted Figma designs into responsive FlutterFlow and Flutter mobile interfaces with clean UI, strong spacing, and smooth UX. ๐Ÿš€ Integrated real app features like APIs, push notifications, subscriptions, payments, Google Maps, booking flows, chat, admin panels, and AI-powered workflows. ๐Œ๐˜ ๐๐‘๐Ž๐‚๐„๐’๐’: Most developers start with screens. I start with product logic. Before I build, I review what the app must do, who will use it, what data must be saved, and where users may get confused. Then every screen, action, and backend flow has one job: guide, process, or convert. Step 1 โ†’ Audit & Strategy: I review your idea, Figma file, current app, or FlutterFlow project and identify gaps in UI, UX, backend, database, API, or launch readiness. Step 2 โ†’ Structure: I map the screens, user roles, Firebase or Supabase database, authentication flow, app states, and key user actions. Step 3 โ†’ Build: I develop the app in Flutter, FlutterFlow, Firebase, Supabase, Dart, custom functions, custom code, or API workflows. Step 4 โ†’ Optimise: I test responsiveness, workflow logic, performance, database behavior, mobile usability, and broken edge cases before delivery. Step 5 โ†’ Launch Support: I help prepare the app for Play Store publishing, App Store submission, RevenueCat, Firebase setup, and production handoff. ๐–๐‡๐€๐“ ๐ˆ ๐๐”๐ˆ๐‹๐ƒ: โœ… Flutter App Development โ†’ Custom iOS and Android apps with clean UI, scalable structure, backend integration, and smooth mobile performance. โœ… FlutterFlow App Development โ†’ MVPs, SaaS apps, booking apps, marketplaces, dashboards, AI apps, and business tools built fast without weak structure. โœ… Firebase & Supabase Integration โ†’ Authentication, Firestore, database rules, storage, real-time data, user profiles, and secure backend flows. โœ… AI Mobile Apps โ†’ AI chat, content generation, recommendation systems, automation flows, smart dashboards, and API-powered app features. โœ… Figma to Flutter / FlutterFlow โ†’ Mobile UI conversion with responsive layouts, modern design, clean spacing, and strong user experience. โœ… API, Payments & App Features โ†’ REST APIs, Stripe, RevenueCat, Google Maps, push notifications, chat, admin panels, and integrations. ๐…๐‘๐„๐๐”๐„๐๐“๐‹๐˜ ๐€๐’๐Š๐„๐ƒ ๐๐”๐„๐’๐“๐ˆ๐Ž๐๐’ Q: Can you build my app in FlutterFlow instead of custom Flutter? Yes. FlutterFlow is a strong choice for MVPs, SaaS apps, marketplaces, booking apps, dashboards, and AI apps that need to move fast. Q: Can you fix or continue an existing FlutterFlow project? Yes. I can audit workflows, app state, Firebase, Supabase, API calls, layout issues, and backend logic without rebuilding everything from scratch. Q: Can you work from Figma designs? Yes. I convert Figma designs into responsive FlutterFlow or Flutter screens while keeping the interface clean, modern, and user-friendly. Q: Can you add AI features or handle deployment? Yes. I can integrate AI chat, content generation, automation, APIs, payments, push notifications, and help prepare your app for App Store or Play Store launch. If you need a Flutter Developer, FlutterFlow Developer, AI App Developer, or Mobile App Developer who can build more than screens, send me your app idea, Figma design, or current project. I will come back with a specific plan, not a generic pitch. TL;DR โ†’ Flutter Developer, FlutterFlow Developer, and AI App Developer. I build clean, scalable iOS and Android apps with Firebase, Supabase, APIs, payments, push notifications, AI features, dashboards, and launch-ready user flows. Flutter Developer || Flutter App Developer || FlutterFlow Developer || FlutterFlow Expert || Cross Platform App Developer || iOS App Developer || Android App Developer || Mobile App Developer || Firebase Developer || Supabase Developer || Dart Developer || Mobile UI UX Designer || Figma to FlutterFlow || Flutter Firebase || Flutter API Integration || Flutter MVP Developer || Flutter AI App || AI App Developer || Stripe Integration || RevenueCat Integration || REST API Integration || Firestore Database || Firebase Authentication || Admin Panel Development || App Deployment || App Store Submission || FlutterFlow Firebase || FlutterFlow Supabase.

  • FlutterFlow
  • Mobile App Development
  • Flutter
  • Android App Development
  • Smartphone
  • Android App
  • Hybrid App Development
  • Firebase
  • Java
  • Mobile App
  • App Development
  • React
  • Hybrid App
  • Dart
  • API Integration
  • Payment Gateway
  • Stripe API
  • User Authentication
  • Node.js
  • Swift
Anthony E.

Awka, Nigeria

$30/hr
4.6
24 jobs

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.

  • Kotlin
  • Flutter
  • In-App Purchases
  • Android App Development
  • iOS Development
  • React
  • React Native
  • Mobile App Development
  • Android
  • Java
  • Android SDK
  • iOS SDK
  • NodeJS Framework
Sakirat O.

Ikare, Nigeria

$10/hr
5.0
4 jobs

I build AI-powered MVPs and micro-SaaS apps for founders and startups, from idea to deployed product in days, not months. My clients come to me with a vision, a napkin sketch, a Figma file, or a competitor's URL, and I turn it into a working product they can put in front of users. Before Upwork I shipped 50+ projects across marketplaces, social networking apps, project management tools, CRM systems, real estate portals, food delivery applications, fitness trackers, and educational platforms. Each one went live, monetized, and served real users within weeks, not quarters. I bring that same speed to every Upwork engagement. My stack and why I use it: Frontend & full-stack: Lovable, FlutterFlow, Bolt.new, Next.js, React, TypeScript, TailwindCSS. I pick the tool that fits the timeline, not the one that fits my resume. AI & LLMs: OpenAI, Anthropic Claude, Vertex AI, LangChain, OpenAI API. I have shipped RAG pipelines, AI chat assistants, content generation flows, and computer-vision features. Backend & data: Supabase (Postgres, Auth, Realtime, Storage), REST APIs, serverless functions on Vercel and Cloud Run. Mobile: Flutter, React Native (Expo, EAS Build, TestFlight), RevenueCat for in-app purchases, App Store and Play Store submission end to end. Payments & billing: Stripe Checkout, Stripe Subscriptions, Stripe Customer Portal. AI-assisted dev: Cursor, GitHub Copilot. I code with AI tooling daily, which is how I deliver 50-55% faster completion times and roughly 70% lower cost than a traditional agency engagement. How I work: Day 1: We lock the scope, the milestones, and the definition of done. No vague "build me an app" โ€” every feature gets a one-line acceptance criterion. Week 1: You see a working prototype. Not a Figma mockup, not a slide deck, a deployed URL you can click through and share with your team or your investors. Week 2-3: We iterate. You give feedback, I ship, you give more feedback. Fixed-price milestones so you only pay for shipped work. Launch: I handle App Store and Play Store submission, production deployment, and a recorded handover walkthrough so your team can maintain the product without me. I am based in Lagos, available 30+ hours per week, and I respond to messages within 4 hours during business hours. If you have a product idea you have been sitting on because you did not know who to trust with the build, send me a message. I will reply with questions, not a generic pitch.

  • AI App Development
  • Mobile App Development
  • AI Mobile App Development
  • Web Application
  • Full-Stack Development
  • FlutterFlow
  • Flutter
  • API Integration
  • SaaS Development
  • Conversational AI
  • Next.js
  • Android App Development
  • iOS Development
  • AI Agent Development
  • Supabase
  • iPad App Development
  • Hybrid App Development
  • Mobile App Development Consultation
  • Web Development
  • OpenAI API
Victor E.

Lagos, Nigeria

$30/hr
4.9
44 jobs

I'm an experienced mobile app developer/software engineer who has built numerous apps for startups and companies. I currently work as an SDK developer for an auth/billing company where I work on libraries for Flutter (Dart), Android (Kotlin), iOS (Swift) and React-Native (TypeScript). I can help you build stable and secure apps and developer tools.

  • Kotlin
  • Flutter
  • iOS
  • Android
  • Mobile App Development
  • Dart
  • Firebase
  • iOS Development
  • Smartphone
  • Tablet
  • Swift
  • Java
  • React Native
  • AI Mobile App Development
  • Figma
  • Android App
  • FlutterFlow
  • Mobile App
Mike O.

Ijebu Ode, Nigeria

$10/hr
5.0
15 jobs

Most startups, founders, and growing businesses already know what they want to build. The challenge is finding a Senior Full Stack Developer who can take ownership of the product, from architecture and MVP planning to frontend development, backend infrastructure, API integration, cloud deployment, automation, and long-term scalability. I help startups, SaaS companies, agencies, and established businesses build modern web applications, SaaS platforms, AI-powered products, CRM systems, business software, marketplaces, customer portals, booking platforms, admin dashboards, automation platforms, Chrome extensions, and mobile applications using production-ready technologies. My primary expertise includes React.js, Next.js, TypeScript, JavaScript, Node.js, Express.js, NestJS, PostgreSQL, MongoDB, Supabase, Firebase, AWS, Docker, Vercel, Tailwind CSS, Stripe, REST APIs, AI Integration, Workflow Automation, and Cloud Infrastructure. As a Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, SaaS Developer, Backend Engineer, API Integration Developer, and AI Developer, I build scalable applications that combine exceptional user experiences with secure backend systems and reliable infrastructure. Whether you need to build an MVP, modernize an existing application, automate business workflows, integrate AI into your product, or scale an enterprise platform, I can help transform your vision into production-ready software. What I Build โœ” SaaS Platforms & Multi-Tenant Applications โœ” Startup MVP Development โœ” AI Applications & AI Integration โœ” AI Chatbots & AI-Powered Business Tools โœ” CRM Systems & ERP Solutions โœ” Business Software & Internal Platforms โœ” Customer Portals & Admin Dashboards โœ” Marketplace Platforms & B2B Marketplaces โœ” Booking & Reservation Systems โœ” Financial Platforms & FinTech Applications โœ” Healthcare & Telehealth Platforms โœ” Real Estate Platforms โœ” Mobile Applications (React Native & Flutter) โœ” Chrome Extensions & Browser Extensions โœ” Web Automation & Workflow Automation โœ” API Integration & Third-Party Integrations โœ” Payment Systems (Stripe, PayPal, Webhooks) โœ” Cloud Deployment & DevOps Core Technical Expertise Frontend Development React.js โ€ข Next.js โ€ข TypeScript โ€ข JavaScript โ€ข HTML5 โ€ข CSS3 โ€ข Tailwind CSS โ€ข Redux โ€ข React Query โ€ข Responsive UI Development โ€ข Front-End Development Backend Development Node.js โ€ข Express.js โ€ข NestJS โ€ข REST API Development โ€ข API Architecture โ€ข Authentication โ€ข Authorization โ€ข JWT โ€ข OAuth โ€ข Backend Infrastructure โ€ข Serverless Functions Database Development PostgreSQL โ€ข MongoDB โ€ข Supabase โ€ข Firebase โ€ข MySQL โ€ข Database Design โ€ข Database Optimization AI Development & Automation AI Development โ€ข AI Integration โ€ข OpenAI API โ€ข Claude API โ€ข AI Applications โ€ข AI Platform Development โ€ข AI Chatbots โ€ข Workflow Automation โ€ข Business Process Automation โ€ข AI-Powered SaaS Cloud & DevOps AWS โ€ข Docker โ€ข Vercel โ€ข Cloudflare โ€ข CI/CD โ€ข GitHub Actions โ€ข Deployment โ€ข Cloud Infrastructure โ€ข Performance Optimization Payments & Integrations Stripe Integration โ€ข PayPal โ€ข Third-Party APIs โ€ข REST APIs โ€ข Webhooks โ€ข API Integration Industries I've Worked With SaaS โ€ข FinTech โ€ข Healthcare โ€ข Telehealth โ€ข E-commerce โ€ข Education โ€ข Manufacturing โ€ข Real Estate โ€ข CRM โ€ข ERP โ€ข Recruitment โ€ข Marketplace Platforms โ€ข Booking Systems โ€ข Marketing Platforms โ€ข Business Automation Why Clients Hire Me I don't just build features, I help build products that are scalable, secure, maintainable, and ready for growth. Clients value working with me because I provide: โ€ข Clean, production-ready code โ€ข Scalable software architecture โ€ข Strong frontend and backend engineering โ€ข Reliable API integration โ€ข Secure authentication and authorization โ€ข Optimized PostgreSQL and MongoDB database design โ€ข AI integration and automation expertise โ€ข Cloud deployment and infrastructure support โ€ข Clear communication and transparent progress updates โ€ข Long-term technical partnership Whether you already have Figma designs, an existing codebase, or just an idea on paper, I can help you build a modern web application, SaaS platform, CRM, AI product, automation system, marketplace, Chrome extension, or mobile application from concept to production. If you're looking for a Senior Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, Backend Engineer, SaaS Developer, AI Developer, API Integration Developer, CRM Developer, Automation Engineer, or long-term technical partner, I'd be happy to discuss your project and recommend the best technical approach

  • Mobile App Development
  • App Development
  • React
  • JavaScript
  • Full-Stack Development
  • SaaS Development
  • Node.js
  • API Integration
  • Web Application Development
  • Next.js
  • TypeScript
  • Database Development
  • Supabase
  • PostgreSQL
  • User Authentication
  • Minimum Viable Product
  • Stripe
  • Tailwind CSS
  • AI Marketplace
  • REST API

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Kotlin Developer in Nigeria on Upwork?

You can hire a Kotlin Developer in Nigeria on Upwork in four simple steps:

  • Create a job post tailored to your Kotlin Developer project scope. We'll walk you through the process step by step.
  • Browse top Kotlin Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Kotlin Developer profiles and interview.
  • Hire the right Kotlin Developer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Kotlin Developer?

Rates charged by Kotlin Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Kotlin Developer in Nigeria on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Kotlin Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Kotlin Developer team you need to succeed.

Can I hire a Kotlin Developer in Nigeria within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Kotlin Developer proposals within 24 hours of posting a job description.