Hire the Best App Development Freelancers
in the United Kingdom
London, United Kingdom
I’m a Flutter developer with 4 years of experience building, fixing, and scaling Android and iOS apps using Flutter and Firebase. I help startups and businesses: Build Flutter apps from scratch Fix bugs and performance issues in existing apps Implement clean UI from Figma or designs Integrate Firebase authentication, Firestore, and real-time features Connect REST APIs and third-party services Prepare and publish apps to the App Store and Play Store I’ve delivered Flutter apps in domains like ride-sharing, prayer times, productivity tools, and utility apps, focusing on stability, scalability, and fast delivery. I communicate clearly, work efficiently, and deliver clean, maintainable code — not quick hacks. Tech stack: Flutter, Dart Firebase (Auth, Firestore, Storage, Realtime DB) REST APIs, Push Notifications Google Maps State Management (Provider, Riverpod, Bloc) Native Code implementation (Swift UI , Kotlin) If you need a reliable Flutter developer for a small task or a long-term project, feel free to invite me.
- App Development
- Mobile App
- Hybrid App Development
- Dart
- Flutter
- Android App Development
- API Integration
- iOS Development
- iOS
- Firebase
- Mobile App Redesign
- Mobile App Design
- Mobile UI Design
- Payment Gateway Integration
- Flutter Stack
Middlesbrough, United Kingdom
I am a senior full-stack and mobile engineer with over 11 years of experience designing, building, and scaling production-grade applications for startups and established organizations. My focus is on clean architecture, performance optimization, security, and long-term maintainability—delivering systems that remain stable and extensible as they grow. I specialize in modern web and backend development using React, Next.js, Node.js, and NestJS, alongside native (iOS/Android) and cross-platform (Flutter) mobile applications. My experience spans fintech, healthcare, e-commerce, logistics, and SaaS platforms, including products serving real users with ongoing operational demands. I approach every engagement with strong technical ownership, structured communication, and disciplined execution. Clients engage me when they need a senior engineer who can quickly understand business requirements, architect reliable solutions, and deliver clean, scalable code with long-term sustainability in mind.
- Android App Development
- iOS Development
- React Native
- Next.js
- Node.js
- AWS Cloud9
- Python
- Machine Learning
- C#
- .NET Stack
- AI Video Generator
- Webflow
- React
- AR & VR
- Twilio
- DevOps
- CI/CD
- PostgreSQL
- Flutter
- Dart
Wolverhampton, United Kingdom
Free Consultation – Let’s Build a Stunning Cross-Platform App Together! Hi there! I'm a Senior React Native and Flutter Developer with 5+ years of proven success building high-performance, scalable mobile apps for iOS and Android — including apps with 1M+ users. Whether you're looking to launch an MVP, scale an existing mobile product, or need help fixing complex bugs — I'm here to deliver clean, maintainable code and a rock-solid user experience. 🚀 What I Deliver ✅ Cross-Platform Mobile Apps (iOS + Android) using React Native / Expo/ Flutter ✅ Scalable & Maintainable Code Architecture (TypeScript + Modular Components) ✅ Performance Optimization, Debugging & CI/CD Pipelines ✅ App Store / Play Store Publishing & Post-Launch Support ✅ Seamless API Integration (REST / GraphQL / Firebase / Supabase) ✅ Real-Time Features: Chat, Video Streaming, Push Notifications, Maps & Geolocation ✅ Clean UI/UX Implementation from Figma or Adobe XD ✅ Ongoing Maintenance, Refactoring, and Feature Expansion 🔧 Tech Stack & Tools Frameworks & Languages: React Native • Expo • TypeScript • JavaScript • Redux • Zustand • Next.js Back-End & API: Node.js • Express • Firebase (Auth, Firestore, Cloud Functions) • Supabase • REST • GraphQL DevOps & Testing: Git • GitHub Actions • Fastlane • Crashlytics • Sentry • Jest • Detox Databases: PostgreSQL • MongoDB • MySQL Design: Figma • Adobe XD • Tailwind CSS • Styled Components 📲 Types of Apps I Specialize In • E-commerce & Marketplace Apps • Booking & Appointment Systems • Fintech & Wallet Integrations • Health & Fitness Tracking • Education & EdTech Platforms • Real Estate Listings & PropTech • Social & Community Apps (Chat, Video, Notifications) • MVPs for Startups & SaaS Platforms 🤝 Why Clients Choose Me ✅ On-Time Delivery, Every Time ✅ Smooth Communication (Clear, Prompt, Transparent) ✅ Hands-On Guidance from Idea to Launch ✅ Focused on ROI-Driven Features ✅ 100% Client Satisfaction with Ongoing Support ✅ Strong Collaboration with Designers, PMs, and Backend Teams ✅ Ability to Scale Projects and Lead Other Developers if Needed 💬 Let's Talk – Free Initial Consultation! Have an app idea or need help scaling your current mobile solution? I offer a free consultation to discuss your goals, technical needs, and timelines. Let’s turn your concept into a high-quality product your users will love. Click “Invite to Job” or “Message” — I usually respond within 1–2 hours. React Native Developer | Cross-Platform Apps | Mobile App Development | TypeScript Expert | Firebase | Expo | Android & iOS | MVP App Developer | UI/UX | Performance Optimization | API Integration | Top React Native Freelancer
- App Development
- Mobile App
- React Native
- Flutter
- Swift
- SwiftUI
- Native App Development
- Android App Development
- iOS Development
- Mobile App Bug Fix
- Mobile App Design
- Mobile App Redesign
- Mobile App Development Consultation
- Redux
- Firebase
Peterborough, United Kingdom
🌟 About Me I am a versatile Full Stack Software Developer with 9+ years of experience in web, mobile, backend development, AI solutions, and DevOps. I specialize in building scalable, high-performance, and user-focused applications that help businesses grow. I deliver clean, maintainable code and solutions that are reliable, secure, and visually appealing. I work closely with clients to understand their goals, provide technical guidance, and ensure every project is delivered on time and within budget. 💼 What I Offer 🌐 Web Development * React.js, Next.js * Node.js, Express * RESTful APIs, GraphQL 📱 Mobile App Development * Flutter (Cross-Platform) * Kotlin (Android), Swift (iOS) 🧠 AI • Automation • Machine Learning * AI-powered application features * Custom AI models & integrations * NLP, text analysis, sentiment analysis * Recommendation systems * Process automation & optimization * Embeddings, vector search, semantic search * AI-driven workflows inside mobile or web apps 🗄 Backend Development * Node.js * MongoDB, PostgreSQL, MySQL * Scalable architectures & microservices ⚙️ DevOps & Deployment * CI/CD pipelines * Docker, Kubernetes * AWS, Firebase * GitLab CI, Jenkins 🎨 UI/UX * Responsive and user-friendly interfaces * Modern mobile and web layouts * Figma-to-Frontend implementation 🔌 API Integration & Third-Party Services * Payment gateways: Stripe, Braintree, Apple Pay * Social login: Google, Apple, Facebook * Cloud integrations & automation ⭐ Why Clients Choose Me * Transparent communication * Fast delivery and attention to detail * Strong problem-solving skills * Expertise across Web, Mobile, Backend, DevOps & AI * Long-term support and scalable solutions 🔧 Skills & Technologies Frontend & Mobile: ✔ React.js | ✔ Flutter | ✔ Swift | ✔ Kotlin | ✔ Redux | ✔ Material UI Backend & Database: ✔ Node.js | ✔ Express.js | ✔ MongoDB | ✔ PostgreSQL | ✔ MySQL | ✔ REST APIs | ✔ GraphQL DevOps & Cloud: ✔ Docker | ✔ Kubernetes | ✔ CI/CD (GitLab, Jenkins) | ✔ AWS | ✔ Firebase Other Expertise: ✔ Agile/Scrum Development ✔ Git Version Control ✔ Testing & QA: Unit Testing, Integration Testing ✔ App Deployment: App Store, Play Store, Web Hosting Full-stack expertise: I can handle both frontend and backend development. Clean code & architecture: I follow best practices to build maintainable and scalable apps. Problem-solving mindset: I focus on delivering solutions that align with your business goals. Client-focused: I communicate regularly, provide updates, and ensure your satisfaction. Experience with publishing apps: I have successfully deployed apps to the iOS App Store. E-commerce development: I have experience building and integrating e-commerce platforms such as Shopify , WordPress (WooCommerce) , and custom online stores , including product listings, payment gateways, and order management systems. 🏆 Achievements Successfully delivered 20+ full-stack web and mobile apps . Experience in AI and automation integrations (OpenAI, chatbot solutions). Trusted by multiple clients as a Top Rated freelancer for delivering quality solutions on Upwork. 💚 Let’s work together to turn your ideas into high-quality, production-ready software solutions!
- Mobile App
- Swift
- Web & Mobile Design Consultation
- Software Development
- Flutter
- Node.js
- Hypothesis Testing
- React
- Odoo Development
- Kotlin
- React Native
- AWS Server Migration
- PHP
- IBM SPSS
- Research Paper Writing
Leicester, United Kingdom
I have performed 6+ years of Mobile App Developer, Lead Generation, Data Entry and Web Research. I have extensive familiarity with Android And IOS development, MS Office (Word, Excel, Power Point), eBay searching,, and PDF Files conversion. I have completed a lot of Mobile Apps, Lead Generation, Web Research and PDF to Excel conversion projects. I have good communication skills, exceptional typing skills, and excellent grammar and spelling. I am a Top Rated Freelancer 🥇🏆 25+ projects completed on Upwork Contact me if you are looking for: Android app, IOS app, ionic developer, flutter developer, Data Entry, Data Scrapping, Data mining, Data Collection, Web Research, Lead Generation, PDF to Excel conversion, Google Sheets, Email Collections, LinkedIn data collection. I am also expert in Graphic Designing. I can create Thumbnail / NFT / Brochure, Poster & Flyer Design / Logo Design & Brand Identity / Business Cards, Envelopes / Print & Layout Design / Landing Page Design / Social Media Banners, Web Design, Background remover, Vector image, Photo Touchup, Logo Animation, video animations, UX/UI design, Video Editing etc. Skills : Adobe Photoshop, Adobe Illustrator, Adobe XD, Adobe InDesign, Adobe Premiere Pro, PowerPoint, Canvas, Corel Draw I would be thrilled to have an opportunity to work with you. Thanks
- Product Listings
- Data Entry
- Microsoft Excel
- Data Scraping
- Mobile App Development
- Graphic Design
- Flutter
- Android App Development
- PDF Conversion
- Administrative Support
- Ionic Framework
- Image Editing
- Lead Generation
- Data Extraction
- Logo Design
London, United Kingdom
We help businesses transform their operations through powerful, scalable digital solutions combining development, automation, and strategy into one seamless system. At Rishvi, we don’t just build websites or apps. We design and implement end-to-end business systems that streamline workflows, improve efficiency, and support sustainable growth. Our core solutions include: • Custom Website Development & E-commerce Platforms • Odoo ERP Implementation & Advanced Customization • CRM Systems & Business Process Automation • E-Invoicing Solutions (UAE & UK -compliant & integrated systems ) • Mobile App Development (Android, iOS & Flutter) • API Integrations & System Architecture • SEO & Digital Growth Strategies What makes us different: We approach every project from a business perspective first ensuring that the technology we build directly impacts your operations, productivity, and revenue. Instead of isolated services, we deliver connected systems that work together reducing manual work, improving visibility, and enabling smarter decision-making. Who we work with: • Growing businesses looking to automate operations • Companies implementing ERP or CRM systems • Organizations needing scalable digital infrastructure • Clients seeking a long-term technology partner If you're looking for more than just a freelancer and want a reliable digital partner who can design, build, and scale your systems we’d be glad to work with you.
- Odoo
- CRM Development
- ERP Software
- Web Development
- Mobile App Development
- Business Process Automation
- SaaS Development
- WordPress e-Commerce
- Shopify
- Linnworks
- Macros
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