Hire the Best DART Developers
in the United States

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Michael J.

West Bloomfield Township, Michigan

$100/hr
5.0
98 jobs

๐Ÿซก Extremely Reliable, Communicative and Fast ๐Ÿฅ‡ The Top 1% of Talent (Expert Vetted) ๐Ÿ’ฐ 60+ apps shipped, generating over 8 figures in revenue. โšก AI speed combined with 8 years of production experience to deliver code that ships fast, feels premium, and scales without cracking. (Available for 2 projects in April 2026) ๐Ÿ› ๏ธ Specializing in Mobile App Development | Flutter, Swift, or React | iOS and Android ๐Ÿ‡บ๐Ÿ‡ธ Honored as a Top Mobile App Developer for hire in the United States from 2020-2025. ๐Ÿ† Award Winning Mobile App Developer: previous app featured on Apple's List of Best Language Learning Apps. ๐Ÿ“ฐ Featured on Business Insider for my innovative contributions to mobile app development on Upwork. I've had the privilege of propelling clients to significant milestones, including achieving $2M in Annual Recurring Revenue (ARR). Some notable successes include: - A restaurant subscription app reaching $100K+ Monthly Recurring Revenue (MRR) - A fitness community app achieving $1.5M+ ARR. โญ๏ธ Client Testimonials: "Michael is a gem in the world of mobile app development..." "Among the top 3 developers I've worked with over the past three years..." "A quality developer and a quality human being..." Upwork Stats: ๐Ÿ… Top 1% of Mobile Developers ๐Ÿ… Top 1% of iOS Developers ๐Ÿ… Top 5% of Firebase Developers ๐Ÿ… Top 5% of Swift Developers ๐ŸŽ“ Proud Michigan State University Graduate with a Bachelor's Degree in Computer Science. With a solid eight-year trajectory as a Mobile App Developer, I've honed my skills across a plethora of projects that span iOS and Android platforms, utilizing Flutter and Swift to create high-impact applications. My forte lies in converting ideas into digital realities that propel businesses forward. From crafting engaging user interfaces to optimizing backend processes, my holistic approach ensures a robust and scalable app solution. I thrive in various development scenarios, whether its working with a team to deliver a project on a tight deadline or building an application from scratch all on my own. My experience extends to working with startups that have secured significant venture capital funding, as well as established enterprises aiming to expand their digital footprint. ๐ŸŒŸ Why Choose Me: Client Satisfaction: My reviews reflect the genuine value I provide. Effective Communication: I prioritize prompt and sincere interactions to ensure project fluidity. Mastery: I strive for flawless, visually appealing apps worthy of portfolio inclusion. ๐Ÿ˜ Excited to collaborate! Whether you're a startup aiming to elevate your product or an established enterprise looking to scale, I'm here to help. Letโ€™s kickstart our partnership with a complimentary 30 minute discussion to blueprint your pathway to success. Specialities: Full Stack Development, AI Systems Architect, AI SaaS Developer, SaaS MVP Development, Mobile MVP Development, Cross-Platform Mobile Apps, Mobile App Development, iOS Development, Scalable SaaS Architecture, AI-Powered SaaS, Flutter App Development, React Native App Development, Backend Development, Frontend Development,ย Mobile App Architecture,ย Cross Platform App Development, AI Powered Applications, API Integration, API-Driven Mobile Apps, Cloud Architecture, Production-Ready MVP, Secure APIs, OpenAI Integration, AI Workflow Automation, LLM Integration

  • Dart
  • Mobile App Development
  • iOS Development
  • Flutter
  • Swift
  • Android App Development
  • AI Mobile App Development
  • Full-Stack Development
  • AI Development
  • App Development
  • Mobile App Design
  • iOS
  • API Integration
  • Mobile App
  • Hybrid App Development
  • Android
  • Native App Development
  • Amazon Web Services
  • Smartphone
  • User Authentication
Serhii L.

Richardson, Texas

$40/hr
4.9
111 jobs

Mobile apps have become the primary way businesses connect with customers, streamline operations, and accelerate growth. As a Mobile App Developer, I help startups, growing companies, and enterprises transform ideas into scalable mobile products that deliver measurable business value. Whether youโ€™re building a new application or modernizing an existing one, I focus on creating high-quality solutions powered by modern technologies and AI For more than 10 years, our team has been designing, developing, and scaling mobile products for companies worldwide. We combine the expertise of Mobile App Developer specialists, React Native engineers, Flutter developers, iOS Developer professionals, and Android developers to build secure, scalable, and user-friendly mobile applications. Our experience also includes AI-powered features, backend development, API integrations, and cloud-native architectures Our company metrics: โ€ข 10+ years of software development experience โ€ข 200+ successfully delivered projects โ€ข 20,000+ tracked hours on Upwork โ€ข 40+ software engineers and mobile specialists โ€ข $1M+ earned through successful client engagements โ€ข 5+ years average commercial experience per developer As a Mobile App Developer, I work closely with founders to define product strategy, validate ideas, and deliver production-ready applications. Our team builds cross-platform solutions using React Native and Flutter, as well as native applications for iOS Developer and Android environments. We also integrate AI capabilities where they create real business value, helping companies automate workflows, personalize user experiences, and improve operational efficiency Our projects range from startup MVPs to enterprise platforms supporting thousands of users. Every Mobile App Developer on our team collaborates with experienced Flutter developers, React Native engineers, Android developers, iOS Developer specialists, full stack developer teams, web developer professionals, and backend engineers to deliver reliable products from concept to launch We specialize in mobile app development across healthcare, fintech, logistics, education, marketplaces, SaaS, workforce management, and customer engagement platforms. Whether the project requires Flutter, React Native, or native Android and iOS development, our focus remains the sameโ€”building applications that are fast, secure, intuitive, and ready to scale Our expertise extends beyond coding. We help clients choose the right architecture, define product roadmaps, optimize user experience, and integrate AI-powered functionality into existing and new mobile products. Working alongside flutter developer, android developer, web developer, and full stack developer teams allows us to deliver complete end-to-end mobile solutions instead of isolated development services We regularly build applications using React Native, Flutter, Java, Kotlin, Swift, React, Python, Kotlin, and Laravel, integrating secure APIs, cloud services, payment systems, authentication, push notifications, analytics, and AI-powered automation. Every Mobile App Developer on our team understands how to create applications that perform consistently across Android and iOS devices while maintaining excellent user experiences Every Mobile App Developer on our team focuses on building products that combine outstanding performance, scalability, and long-term maintainability. Using React Native, Flutter, Swift, native Android, and iOS Developer best practices, we create applications that support rapid business growth and evolving customer needs. Our full stack developer, web developer, flutter developer, and android developer teams collaborate throughout the entire product lifecycle, while AI technologies help deliver smarter mobile experiences, personalized recommendations, intelligent automation, and data-driven decision making AI has become an important part of modern AI mobile app development. We help businesses integrate AI into mobile products (Android, iOS) through intelligent assistants, automation, predictive features, recommendation engines, and AI-driven user experiences. Instead of adding AI as a trend, we implement practical solutions that improve customer engagement and simplify business operations Whether you need a Mobile App Developer to launch a new MVP, migrate an existing application to React Native or Flutter, modernize an Android Kotlin application, improve an iOS product, or expand your engineering team, we can help. Our experience covers the entire product lifecycleโ€”from discovery and architecture to development, testing, deployment, and long-term support If youโ€™re looking for a trusted Mobile App Developer with expertise in React Native, Flutter, iOS Developer, Android, Swift, Kotlin, and scalable mobile app development, letโ€™s discuss your project and build a solution that creates lasting business value

  • Dart
  • Mobile App Development
  • Flutter
  • Android
  • React Native
  • Android App Development
  • iOS Development
  • Node.js
  • JavaScript
  • Firebase
  • React
  • PHP
  • Java
  • Swift
  • Native App Development
  • HTML
  • iPhone & iPad Apps
  • Kotlin
  • iOS
Fahad K.

West Bloomfield Township, Michigan

$30/hr
4.8
206 jobs

๐Ÿ‘‹ Hi, I'm Fahad Khan I build high-performance Flutter apps, native iOS & Android applications, and professional websites for startups and growing businesses that need to launch fast โ€” without sacrificing scalability, security, or code quality. With 100+ projects delivered and a 100% Job Success Score, I help founders, product teams, and businesses turn ideas into reliable, revenue-generating digital products โ€” whether that's a cross-platform mobile app, a native iOS/Android application, or a conversion-optimized website. ๐Ÿ“ฑ Mobile App Development (Flutter | iOS | Android) Most mobile apps fail not because of UI โ€” but because of weak backend logic and poor system design. That's where my background becomes a strength. I build Flutter, native iOS (Swift/SwiftUI), and Android (Kotlin/Java) apps that integrate with secure backends, REST APIs, and admin dashboards โ€” making your app the execution layer of a complete product, not just a standalone front end. โœ… Flutter โ€” cross-platform iOS & Android from a single codebase โœ… Native iOS โ€” Swift, SwiftUI, Xcode, App Store deployment โœ… Native Android โ€” Kotlin, Java, Google Play deployment โœ… Startup MVPs โ€” validate your idea fast โœ… Business & internal apps with real workflows โœ… Customer-facing production-ready apps โœ… Firebase, Supabase, Node.js & Laravel backend integration โœ… Push notifications, payments (Stripe, in-app purchases), maps & more โœ… App Store & Google Play submission & optimization โœ… Clean, scalable architecture built for long-term growth ๐ŸŒ Web Development & Design I'm also a full-stack web developer with deep expertise across modern web technologies โ€” delivering fast, secure, and visually compelling websites that rank on Google and convert visitors into customers. My web stack includes: WordPress โ€” custom themes, plugins, WooCommerce, e-commerce migrations Laravel & PHP โ€” robust backend systems, custom web applications React.js โ€” dynamic, component-driven frontend development Webflow โ€” pixel-perfect no-code/low-code builds with complex interactions HTML, CSS, JavaScript โ€” clean, standards-compliant code across every project โœ… Website cloning, redesigns & brand refreshes โœ… E-commerce stores (WooCommerce, Shopify migration) โœ… SEO-optimized, mobile-responsive layouts โœ… Speed optimization & Core Web Vitals improvement โœ… Complex Webflow features & custom interactions โœ… API integrations & third-party service connections ๐ŸŽฏ What You Get Working With Me ๐Ÿ“ฆ Clean, maintainable code โ€” easy to hand off or scale ๐Ÿ—๏ธ Scalable architecture that grows with your business ๐Ÿ“… Clear milestones, realistic timelines, zero surprises ๐Ÿ” SEO best practices built into every web project ๐Ÿ“ฒ App Store & Play Store optimization (ASO) ๐Ÿค A product-focused partner โ€” not just a task executor ๐Ÿ‘ฅ Industries I've Served E-commerce โ€ข SaaS โ€ข Healthcare โ€ข Real Estate โ€ข Education โ€ข Hospitality โ€ข Fintech โ€ข Retail Whether you need a Flutter app that scales, a native iOS or Android app, a WordPress site that ranks, or a complete digital product from idea to launch โ€” Let's build something that actually works in the real world. LET'S TALK! ๐Ÿš€

  • Dart
  • Flutter
  • Mobile App Development
  • Mobile App Design
  • iOS Development
  • Android App
  • In-App Advertising
  • AI App Development
  • App Development
  • REST API
  • Firebase
  • User Authentication
  • Payment Gateway Integration
  • App Design
  • In-App Subscription
Karl S.

Townsend, Delaware

$50/hr
4.2
20 jobs

Top Rated Plus Full Stack Mobile App Developer | Top 3% UpWork Talent | Flutter | Kotlin | Swift | React, Node.js, AWS | Building Scalable Digital Experiences Iโ€™m a passionate and detail-oriented Full Stack Developer with over 10 years of experience crafting high-quality Web and Mobile applications for startups, enterprises, and agencies worldwide. I specialize in building end-to-end solutions using modern technologies and frameworks โ€” from beautiful, responsive UIs to robust, scalable backend systems. ๐Ÿ’ก Tech Stack Highlights: Frontend:Flutter (Dart), React-Native, Kotlin, Swift, React.js, Tailwind CSS, TypeScript Backend: Node.js (Next.js, NestJS), GraphQL, REST APIs Database:, MySQL, MSSQL, MongoDB, Firebase, Google Cloud DevOps/Cloud: Docker, GitHub Actions, AWS (EC2, S3, Lambda) Tools: Git, Jira, Notion, Postman, CI/CD, WebSockets, Stripe, OAuth2 What I Offer: Full-cycle Development from concept to Deployment Clean, maintainable, and scalable code Mobile-friendly, SEO-optimized, and fast-loading applications API integrations (Stripe, Twilio, Firebase, third-party REST/GraphQL) Agile collaboration with clear communication and on-time delivery Iโ€™ve completed a wide range of freelance projects: custom dashboards, SaaS platforms, eCommerce sites, API backends, mobile-first apps, and admin panels. Whether you're looking to launch an MVP, optimize an existing product, or scale your system, I bring technical expertise and business acumen. โœ… Why Clients Choose Me: Strong work ethic & attention to detail Fast learner and great problem solver Transparent and clear Communication Available for one-time projects or long-term collaboration Letโ€™s build something amazing together. Drop me a message โ€” Iโ€™d love to hear about your project!

  • Dart
  • Mobile App Development
  • Flutter
  • Kotlin
  • Swift
  • React Native
  • React
  • Node.js
  • Next.js
  • MongoDB
  • Google Cloud Platform
  • NestJS
  • Firebase Cloud Firestore
  • FlutterFlow
  • .NET Core
  • MySQL
  • API Development
  • Stripe API
  • In-App Purchases
  • In-App Subscription
Joel C.

Harrisburg, Pennsylvania

$35/hr
4.2
85 jobs

I build AI-powered apps โ€” mobile and web โ€” that solve real business problems. Expertise in Flutter and Next.js on the front, Supabase (Postgres, Realtime, Edge Functions, RLS) on the back, and AI integration (Claude, OpenAI) throughout. I deliver production-ready apps in weeks, not months. What I bring: real-time data sync (Supabase Realtime), full-stack delivery (Flutter/Next.js to Supabase Postgres to Edge Functions), and seamless AI integrations โ€” LLMs, speech-to-text, image recognition, and face detection. Comfortable with Stripe payments, Firebase, and load testing at scale (50 concurrent users). Recent work: OneMind, a real-time AI consensus platform shipped on both Flutter and Next.js (1,388+ tests); an AI calorie tracker with photo recognition; and a biometric identity system using AWS Rekognition. I currently maintain several production apps for ongoing clients. Let's talk about your project โ€” I respond within hours and scope accurately.

  • Dart
  • Flutter
  • Supabase
  • Firebase
  • FlutterFlow
  • AI App Development
  • Mobile App Development
  • API Integration
  • Python
  • Machine Learning
  • Computer Vision
  • Stripe
  • React
  • SQLite
  • Serverless Computing
  • Prompt Engineering
  • Image Analysis
  • TypeScript
  • Node.js
Sully F.

Parlin, New Jersey

$30/hr
5.0
3 jobs

๐˜๐จ๐ฎ๐ซ ๐š๐ฉ๐ฉ ๐ข๐๐ž๐š ๐๐ž๐ฌ๐ž๐ซ๐ฏ๐ž๐ฌ ๐ฆ๐จ๐ซ๐ž ๐ญ๐ก๐š๐ง ๐š ๐๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ž๐ซ ๐ฐ๐ก๐จ ๐ฃ๐ฎ๐ฌ๐ญ ๐ฐ๐ซ๐ข๐ญ๐ž๐ฌ ๐œ๐จ๐๐ž ๐ข๐ญ ๐ง๐ž๐ž๐๐ฌ ๐ฌ๐จ๐ฆ๐ž๐จ๐ง๐ž ๐ฐ๐ก๐จ'๐ฌ ๐ฌ๐ก๐ข๐ฉ๐ฉ๐ž๐ ๐Ÿ๐ŸŽ๐ŸŽ+ ๐š๐ฉ๐ฉ๐ฌ ๐š๐ง๐ ๐ค๐ง๐จ๐ฐ๐ฌ ๐ฐ๐ก๐š๐ญ ๐š๐œ๐ญ๐ฎ๐š๐ฅ๐ฅ๐ฒ ๐ ๐ž๐ญ๐ฌ ๐ฎ๐ฌ๐ž๐ซ๐ฌ ๐ญ๐จ ๐จ๐ฉ๐ž๐ง, ๐ฌ๐ญ๐š๐ฒ, ๐š๐ง๐ ๐ฉ๐š๐ฒ. Iโ€™m a Mobile App Developer with 10+ years of experience, specializing in Flutter and React Native, helping startups, SaaS companies, and businesses build scalable Android & iOS applications, MVPs, and production-ready mobile products. I have successfully delivered 100+ mobile applications, focusing on performance, user experience, and long-term scalability. I build modern cross-platform mobile applications that solve real business problems, improve user engagement, and help businesses launch products faster. From product planning and architecture to development, testing, and App Store deployment, I handle the complete mobile app development lifecycle. My expertise is focused on Flutter and React Native development, creating high-performance applications with clean architecture, responsive UI, smooth user experiences, and maintainable codebases. My core expertise includes: โ€ข Flutter App Development โ€ข React Native App Development โ€ข Cross-Platform Mobile App Development โ€ข Android & iOS Mobile Applications โ€ข Startup MVP Development โ€ข SaaS Mobile Applications โ€ข Firebase Integration โ€ข REST API & Third-Party API Integration โ€ข Authentication Systems (Email, Google, Apple, Phone, Social Login) โ€ข Payment Gateway Integration (Stripe, Apple Pay, Google Pay) โ€ข Push Notifications & Real-Time Features โ€ข Google Maps & Location-Based Services โ€ข AI-Powered Mobile Applications & OpenAI API Integration โ€ข App Store & Google Play Store Deployment I have built mobile solutions across multiple industries, including: โ€ข SaaS Applications โ€ข Business Applications โ€ข Healthcare Apps โ€ข Fitness & Wellness Apps โ€ข Marketplace Platforms โ€ข Booking Applications โ€ข Food Delivery Apps โ€ข Real Estate Applications โ€ข Social Networking Apps โ€ข AI-Based Mobile Products My development process includes: โœ“ Understanding your product goals and user requirements โœ“ Defining scalable architecture and development milestones โœ“ Building clean, maintainable, and production-ready mobile applications โœ“ Integrating APIs, Firebase, authentication, payments, maps, and third-party services โœ“ Testing for performance, stability, and usability โœ“ Deploying applications successfully to the Apple App Store and Google Play Store Why clients choose to work with me: โ€ข 10+ years of mobile app development experience โ€ข 100+ mobile applications delivered across different industries โ€ข Strong expertise in Flutter and React Native ecosystems โ€ข Business-focused approach with attention to scalability and user experience โ€ข Clean, maintainable code and structured development workflow โ€ข Experience building MVPs, improving existing apps, and adding new features โ€ข Clear communication and reliable long-term support Whether youโ€™re launching a new MVP, improving an existing mobile application, or building a complete digital product, I can help transform your idea into a scalable, reliable, and user-focused Android & iOS application. Letโ€™s discuss your project requirements and build a mobile solution that creates real value for your users.

  • Dart
  • Flutter
  • React Native
  • Android App Development
  • iOS Development
  • TypeScript
  • Firebase
  • RESTful API
  • Push Notifications
  • Google Maps API
  • Payment Gateway Integration
  • In-App Purchases
  • OpenAI API
  • Stripe
  • CI/CD
  • Unit Testing
  • GraphQL
  • Redux
  • Mobile App Development
  • Expo.io

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