Hire the Best App Developers
in the United Kingdom

Clients rate our App developers
Rating is 4.8 out of 5.
4.8/5
Based on 325 client reviews
Shahab M.

Oldham, United Kingdom

$20/hr
5.0
6 jobs

Top 1% Mobile App Developer on Upwork | Flutter, iOS & Android | AI-Powered Apps | 100% Job Success Tired of mobile apps that crash under real users, or developers who disappear mid-project? I have solved that exact problem for 60+ founders and businesses. My clients launch apps that hold up on Day One, clean Flutter/native code, App Store & Google Play ready, and AI features that actually work. 100% Job Success, Top Rated, 9+ years of experience, 30+ apps live in the market. ๐ŸŽฏ WHAT I BUILD โ–ธ FULL-CYCLE MOBILE APP DEVELOPMENT From idea to App Store/Play Store launch. Flutter, Android, and iOS apps built for real users from day one. โ–ธ CROSS-PLATFORM APPS (FLUTTER + REACT NATIVE) One codebase, native performance on both iOS and Android. Faster delivery without sacrificing quality. โ–ธ NATIVE ANDROID & iOS DEVELOPMENT Platform-specific builds when performance or deep OS integration matters most. โ–ธ AI-POWERED MOBILE APPS OpenAI API integration for smart features chat, recommendations, automation implemented cleanly, no over-engineering. โ–ธ ON-DEMAND & MARKETPLACE APPS Ride booking, food delivery, real estate listing, e-commerce Uber/Airbnb-style apps built end-to-end. โ–ธ BACKEND & API DEVELOPMENT Node.js, Python (FastAPI/Flask/Django), REST & GraphQL APIs, connected to Firebase, MySQL, MongoDB, or your stack of choice. โ–ธ CODE AUDIT & APP STABILIZATION Inherited a buggy app? I audit performance, crashes, and architecture, then deliver a fix plan fast. ๐Ÿ’ฌ CLIENT FEEDBACK Review 1: Great experience working with Shahab Malik on our mobile app project. He's skilled in Flutter, Dart, Node.js, and API Integration, and delivered clean, functional code on time. Communication was smooth, and he was open to feedback. Highly recommended for Mobile App Development. Review 2: Shahab Malik is professional and responsive, with strong skills in Cross Platform and iOS/Android App Development using Flutter. He delivered a well-designed app with smooth UI and RESTful API integration, even adding some AI features. ๐Ÿ† CREDENTIALS - Top 1% Talent on Upwork Mobile App Development - 100% Job Success, 60+ Projects Delivered - 30+ Apps Live on App Store & Google Play - 9+ Years of Experience - AI Mobile App Development (OpenAI Integration) ๐Ÿš€ HOW WE START โœ‰๏ธ MESSAGE ME ON UPWORK Have a mobile app idea, or an existing app that needs fixing? Message me for a free consultation and a clear plan to launch faster. How I Work Full-cycle mobile apps in Flutter, Android, iOS, with clean backend and API integration. Figma designs turned into pixel-perfect UI, progress tracked in Jira/Trello, communication through clear updates, and delivery with long-term support after launch. ๐Ÿ› ๏ธ TOOLS & TECHNOLOGY Mobile Development Flutter, Dart, React Native, Android (Kotlin/Java), iOS (Swift) Backend & Databases Node.js, Python (FastAPI, Flask, Django), Firebase, Firestore, MySQL, MongoDB, SQLite APIs & Integrations REST API, GraphQL, OpenAI API, Firebase Cloud Functions Cloud & Deployment AWS, Google Cloud, Firebase Design & Collaboration Figma, Adobe XD, Material Design, Cupertino Widgets, Git, GitHub, GitLab, Bitbucket, Jira, Trello Solutions Delivered Ride/Booking Apps, Real Estate Apps, Social Media Apps, Sports Apps, Food Delivery Apps, E-commerce Apps, Learning Management Apps, Appointment Booking Apps, CRMs, On-demand Apps Mobile App Developer, Flutter Developer, iOS Developer, Android Developer, AI Mobile App Development, Cross-Platform App Development Keywords: Flutter, Dart, OpenAI API, Full Stack Developer, Back End Developer, API Integration, Node.js, SQL, Mobile App Development, Mobile App Developer, Android App Development, Android App Developer, AI Mobile App Development, AI Mobile App Developer, Mobile App Design, Mobile App UI Design, Responsive Design, UI/UX Designer, Prototyping, Mobile App API Integration, iOS App Developer, iOS App Development, Hybrid App Development, Cross Platform App Development, Express.js, RESTful API, Machine Learning App Integration, Senior Mobile App Developer, Software Designer #Flutter #Dart #OpenAIAPI #FullStackDeveloper #BackEndDeveloper #APIIntegration #Nodejs #SQL #MobileAppDevelopment #MobileAppDeveloper #AndroidAppDevelopment #AndroidAppDeveloper #AIMobileAppDevelopment #AIMobileAppDeveloper #MobileAppDesign #MobileAppUIDesign #ResponsiveDesign #UIUXDesigner #Prototyping #MobileAppAPIIntegration #iOSAppDeveloper #iOSAppDevelopment #HybridAppDevelopment #CrossPlatformAppDevelopment #Expressjs #RESTfulAPI #MachineLearningAppIntegration #SeniorMobileAppDeveloper #SoftwareDesigner

  • Mobile App Development
  • Mobile App Bug Fix
  • Android App Development
  • API Integration
  • Hybrid App Development
  • iOS Development
  • AI Mobile App Development
  • Website to Mobile App Conversion
  • Mobile App Design
  • Mobile App Redesign
  • Mobile UI Design
  • Mobile App Testing
  • Back-End Development
  • Flutter
  • Node.js
  • ExpressJS
  • Dart
  • Firebase
  • Supabase
  • REST API
Marina A.

London, United Kingdom

$30/hr
5.0
11 jobs

As an App Growth consultant, I help mobile app developers achieve both organic growth and targeted user acquisition, ensuring sustained performance, higher rankings, and increased downloads. My services include: App Store Optimization (ASO) Services - keywords optimization, AB tests, competitor analysis, review and rating management, performance monitoring and reporting User Acquisition (UA) Services - paid campaign strategy & set up, campaign management & optimization, design briefs, data analytics & reporting. I also run Rankello, a boutique app growth agency that specialises on your bespoke needs.

  • A/B Testing
  • Mobile App Strategy
  • Organic Traffic Growth
  • App Store Optimization
  • Mobile App Localization
  • Growth Strategy
  • Performance Marketing
  • Customer Acquisition
Aliyu O.

Sheffield, United Kingdom

$50/hr
5.0
10 jobs

I build native and cross-platform iOS and Android apps for founders and businesses who need this project done right the first time, with zero surprises along the way. You get daily visibility into progress, straight answers when you ask a technical question, and an app that's actually ready to ship, not one that needs three more rounds of bug fixes after "final delivery." ๐—ช๐—ต๐—ฎ๐˜ ๐—ง๐—ต๐—ถ๐˜€ ๐— ๐—ฒ๐—ฎ๐—ป๐˜€ ๐—™๐—ผ๐—ฟ ๐—ฌ๐—ผ๐˜‚: - You stop worrying about the tech. I handle the decisions, you focus on your business. - No disappearing acts. You always know where the project stands. - No rebuild six months later. I build for scale from day one, so growth doesn't break what we shipped. - No guessing on cost or timeline. Milestones are clear before we start, not renegotiated halfway through. ๐—ช๐—ต๐˜† ๐—œ ๐—–๐—ฎ๐—ป ๐—ฃ๐—ฟ๐—ผ๐—บ๐—ถ๐˜€๐—ฒ ๐—ง๐—ต๐—ถ๐˜€: 15 years of native and cross-platform iOS and Android development, 50+ apps shipped across finance, healthcare, e-commerce, and social networking. I've worked as a CTO at funded startups, so I know what it's like to be the person accountable when an app has to work, not just look finished in a demo. ๐—ถ๐—ข๐—ฆ: Swift, SwiftUI, UIKit, Core Data, Firebase, AWS Mobile Services ๐—”๐—ป๐—ฑ๐—ฟ๐—ผ๐—ถ๐—ฑ: Kotlin, Jetpack, Android SDK, Firebase ๐—–๐—ฟ๐—ผ๐˜€๐˜€-๐—ฃ๐—น๐—ฎ๐˜๐—ณ๐—ผ๐—ฟ๐—บ: React Native ๐—™๐˜‚๐—น๐—น ๐—Ÿ๐—ถ๐—ณ๐—ฒ๐—ฐ๐˜†๐—ฐ๐—น๐—ฒ: requirements, UI/UX, build, testing, App Store and Play Store submission, post-launch support ๐——๐—ฒ๐˜ƒ๐—ข๐—ฝ๐˜€: CI/CD pipelines (Fastlane, GitLab CI), AWS, Google Cloud If you're hiring for a project that actually matters to your business, not just a cheap build to check a box, let's talk about what you're trying to build. ๐—–๐—น๐—ถ๐—ฒ๐—ป๐˜-๐—–๐—ฒ๐—ป๐˜๐—ฟ๐—ถ๐—ฐ ๐—”๐—ฝ๐—ฝ๐—ฟ๐—ผ๐—ฎ๐—ฐ๐—ต: - Collaborative Development: Strong communicator with a knack for understanding client needs, providing regular updates, and incorporating feedback to ensure client satisfaction. - User-Centered Design: Focused on creating intuitive, engaging, and accessible applications that align with user expectations and industry standards. ๐—ช๐—ต๐˜† ๐—–๐—ต๐—ผ๐—ผ๐˜€๐—ฒ ๐— ๐—ฒ? - Proven Expertise: Over 15 years of experience specializing in native and cross-platform iOS and Android development. - Quality Assurance: Commitment to delivering bug-free, high-performance applications. - Timely Delivery: Ensuring project milestones are met on time, every time. - Innovative Solutions: Bringing creativity and innovation to every project, ensuring your app stands out in the market.

  • Mobile App Development
  • Mobile App Improvement
  • Android App Development
  • Hybrid App Development
  • iOS Development
  • Mobile App
  • Android
  • iOS
  • React Native
  • Swift
  • AI Mobile App Development
  • iOS SDK
  • Android SDK
  • Mobile App Design
  • Android App
Oleg R.

London, United Kingdom

$40/hr
4.8
81 jobs

Full stack mobile app developer with 15+ years of experience in Mobile App Development, specializing in Flutter, React Native, React, IOS, Swift, Android, Python, and Java. I have successfully delivered 120+ mobile applications in different roles as flutter app developer, flutter full stack developer, flutter flow, ai mobile app developer, mobile app design, mobile ui ux designer, ios developer, android developer, react native developer, mobile game developer achieving a 5-star rating on Upwork and helping clients scale their businesses with high-performance solutions. ๐Ÿš€ Flutter Mobile App Developer | Mobile UI/UX Designer | Mobile Game Developer | Mobile Web Developer for Mobile app development project. Expert in Flutter mobile app development, delivering 30+ high-performance apps with pixel-perfect UI and smooth animations. Skilled in clean architecture and comprehensive testing for robust solutions. Experienced Mobile App Developer. ๐Ÿ”น Applied game mechanics for engaging experiences in mobile development where I was a Mobile Game Developer. ๐Ÿ”น Integrated real-time features, secure authentication, and cloud functions as Flutter Firebase Developer. ๐Ÿ”น Built seamless API integrations and data synchronization in mobile development in Flutter mobile app development as a Flutter Laravel Specialist. ๐Ÿš€ iOS app developer | Mobile UI/UX Designer | Mobile Game Developer | Mobile Web Developer in mobile app development: Developed and optimized 40+ iOS apps using Swift. Implemented complex features as iOS app developer, maintaining clean architecture and best practices. Leveraged extensive experience as iOS developer Swift to create intuitive user experiences and solve challenging technical problems. Collaborated with cross-functional teams as Swift iOS developer, utilizing Kotlin Swift expertise to deliver high-quality applications on time and exceed client expectations on iOS Swift smartphone platforms. ๐Ÿš€ Android Developer | Mobile UI/UX Designer | Mobile Game Developer | Mobile Web Developer in mobile app development: Built 30+ Android apps with adaptive UI, material design, and battery-friendly performance. Expert in Android Kotlin developer, leveraging Kotlin Swift and Kotlin Multiplatform for cross-platform solutions. Optimized security as Android reverse engineer and streamlined releases as Android app publisher, enhancing engagement and update efficiency. ๐Ÿš€React Native Developer | Mobile UI/UX Designer | Mobile Game Developer | Mobile Web Developer in mobile app development: Built 20+ cross-platform apps with responsive UI and seamless sync. Expert in React Native mobile, React Native Expo, and React Native Firebase for real-time features. Optimized communication with React Native WebRTC. Crafted interactive experiences as React JS and Front End React specialist. Developed hybrid solutions as Java React expert, maximizing code reuse. ๐Ÿ“ฑ Performance & Scalability: Built apps supporting 1M+ users, integrating real-time updates, gamification, and video streaming. ๐Ÿ’ฐ Business Impact: Helped startups and enterprises generate $10M+ in revenue through well-optimized and engaging mobile applications. iOS App Development Case Study ๐Ÿ“ฑ Developed a high-performance iOS app using iOS Swift that achieved 5 star rating and featured status in the App Store. Implemented Flutter iOS compatibility for future cross-platform expansion while maintaining native performance and security. Supported iOS app marketing efforts with analytics implementation and App Store optimization, resulting in 35% higher user retention than industry average. I am currently not accepting WordPress projects as I'm focusing exclusively on mobile app development. Professional Achievements ๐Ÿš€ Rewarded as ๐Ÿ† ๐—ง๐—ข๐—ฃ ๐—ฅ๐—”๐—ง๐—˜๐—— ๐—ฃ๐—Ÿ๐—จ๐—ฆ ๐Ÿ† ๐Ÿš€ 4154 mobile app development hours on Upwork and still counting ๐Ÿš€ 100% Job Success in mobile app development (Client Satisfaction Ratio) ๐Ÿš€ 54+ mobile app development jobs completed successfully โœ… 98% of Clients Recommended working with me as with AI Mobile App Developer โœ… 80% Long-term Repeat Clients โœ… 15+ Years Of Experience in mobile app development, 6 years experience in Flutter mobile app development, 7 years experience in Swift and Kotlin, 4 years experience in React Native. โœ… High-Quality Work โœ… Cost-Effective AI Mobile App Developer โœ… Fluent English Verified โœ… 93% on-time delivery rate across all mobile app development milestones Got an app idea that you think is ready to make a splash? Let's dive in and explore it together in a free intro call

  • Mobile App Development
  • Smartphone
  • Android App Development
  • Hybrid App Development
  • iOS Development
  • Mobile App
  • Flutter
  • Kotlin
  • Generative AI
  • Large Language Model
  • AI Agent Development
  • React Native
  • Web Development
  • React
  • JavaScript
  • Laravel
  • Python
  • Node.js
  • AI Mobile App Development
  • Swift
Ahmed E.

Newcastle upon Tyne, United Kingdom

$28/hr
4.8
47 jobs

โœ… Upwork Skill Certified. โœ… Top Rated Plus Mobile App developer IOS (Swift) & Android developer (Kotlin). โœ… 50+ Apps uploaded on Appstore and Playstore over the past 4 years only. โœ… 5+ years of Experience. โœ… 5600+ Hours on Upwork Only. In addition of being Certified IOS App Developer I have developed a wide range of Mobile Applications on different platforms. including Android/Kotlin, React Native, Ionic. I have successfully built Mobile Apps Integrating Firebase, Social Media integration, OCR, Text recognition, PDF Manipulation and Map locations. My main interest is to create challenging applications using my vast programming experience, no matter how your project complexity is, I will not give up until I fulfill all the project requirements.

  • Mobile App Development
  • Android App Development
  • iOS Development
  • Kotlin
  • Java
  • Firebase
  • React Native
  • iOS
  • In-App Purchases
  • Swift
  • Android Studio
  • Python
  • Android
  • Apple Xcode
  • Machine Learning
Hamza Rafique A.

Manchester, United Kingdom

$25/hr
5.0
2 jobs

๐…๐ซ๐จ๐ฆ ๐•๐ข๐ฌ๐ข๐จ๐ง ๐ญ๐จ ๐Œ๐ข๐ฅ๐ฅ๐ข๐จ๐ง๐ฌ ๐จ๐Ÿ ๐ƒ๐จ๐ฐ๐ง๐ฅ๐จ๐š๐๐ฌ: ๐˜๐จ๐ฎ๐ซ ๐€๐ฉ๐ฉ, ๐๐ฎ๐ข๐ฅ๐ญ ๐ญ๐จ ๐’๐œ๐š๐ฅ๐ž Your vision. My execution. I turn app ideas into launched, scalable products that users love. With 5+ years of experience and 80+ apps delivered, I build for impact, not just code. ๐๐‘๐Ž๐•๐„๐ ๐€๐“ ๐’๐‚๐€๐‹๐„ 80M+ downloads across app stores MVPs that secured funding and retained 40%+ users Worked with founders across 40+ countries including US, UK, UAE, Australia, Germany ๐…๐”๐‹๐‹-๐‚๐˜๐‚๐‹๐„ ๐„๐—๐๐„๐‘๐“๐ˆ๐’๐„ Development Flutter โ€ข React Native โ€ข Swift โ€ข Kotlin โ€ข Clean Architecture Design Figma/XD prototyping โ€ข User-centered UI/UX โ€ข MVP roadmapping Launch & Scale App Store & Google Play submission โ€ข CI/CD โ€ข Post-launch scaling ๐ˆ๐๐ƒ๐”๐’๐“๐‘๐ˆ๐„๐’ ๐ˆ ๐’๐„๐‘๐•๐„ FinTech | HealthTech | EdTech | On-Demand | Social | E-Commerce | Real Estate | Media ๐Œ๐˜ ๐๐‘๐Ž๐‚๐„๐’๐’: ๐‚๐‹๐„๐€๐‘, ๐…๐€๐’๐“, ๐‘๐„๐‹๐ˆ๐€๐๐‹๐„ Strategy Session We define your vision and map your MVP Weekly Sprints Consistent progress, real demos, zero surprises Scalable Build Clean architecture, tested code, ready to grow Launch & Grow Store deployment + scaling support ๐–๐‡๐˜ ๐…๐Ž๐”๐๐ƒ๐„๐‘๐’ ๐‚๐‡๐Ž๐Ž๐’๐„ ๐Œ๐„ Proven at scale End-to-end ownership Clear weekly updates Built to last ๐‹๐„๐“โ€™๐’ ๐‹๐€๐”๐๐‚๐‡ ๐˜๐Ž๐”๐‘ ๐€๐๐ ๐Œ๐ž๐ฌ๐ฌ๐š๐ ๐ž ๐ฆ๐ž ๐ญ๐จ๐๐š๐ฒ ๐Ÿ๐จ๐ซ ๐š ๐Ÿ๐ซ๐ž๐ž ๐Ÿ‘๐ŸŽ-๐ฆ๐ข๐ง๐ฎ๐ญ๐ž ๐ฌ๐ญ๐ซ๐š๐ญ๐ž๐ ๐ฒ ๐œ๐š๐ฅ๐ฅ + ๐ฒ๐จ๐ฎ๐ซ ๐Œ๐•๐ ๐ซ๐จ๐š๐๐ฆ๐š๐ฉ. #MobileAppDevelopment #MobileAppDeveloper #Flutter #iOS #FlutterMobileAppDeveloper #AndroidAppDeveloper #AndroidAppDevelopment #FlutterMobileApp #MobileDeveloper #ReactNative #Firebase #Nodejs #AIAppDevelopment #AIMobileApp #AppDeveloper #BackendIntegration #FullStack #iOSAppDevelopment #iOSDeveloper #Kotlin #MobileAppDevelopmentConsultation #Swift #AIApp #AIAppDeveloper #BugFixing #CI/CD #CleanArchitecture #CrossPlatformDevelopment #FlutterDeveloper #FullStackDeveloper #Android #iOS #MobileAppDevelopment #Smartphone #JavaScript #Flutter #React Native #iOSDevelopment #Firebase #AndroidAppDevelopment #MobileAppDesign #WebDesign #APIIntegration #API #Swift

  • Mobile App Development
  • Android App Development
  • API Integration
  • iOS Development
  • Android
  • iOS
  • Android Smartphone
  • JavaScript
  • Flutter
  • React Native
  • Firebase
  • Mobile App Design
  • Web Design
  • API
  • Swift

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