Michael J.

Highest rated mobile app developer for hire 6 years in a row. Available for only 2 more projects (November 2026). I’ve helped my clients generate over $10M in revenue by building AI agents, mobile apps, and web apps. My work has been featured by Business Insider, Apple, Upwork, and Crain’s Detroit Business. A few results I’m proud of 👇 ✅ Rebuilt a whiskey collection app and improved its onboarding, helping double its trial-start rate and raise its App Store rating from 4.2 to 4.9. ✅ Built AI agents for an influencer marketing agency’s creator support and outreach, creating roughly $24,000/year in additional staffing capacity and generating 20% more creator applicants from the same outreach volume. ✅ Brought a restaurant membership business to iOS and Android, helping it add $120,000 in monthly recurring revenue and expand into more than five additional markets. ✅ Built and scaled a health coaching app to $12,000 in MRR in under six months. As a mobile app developer, Flutter developer, iOS developer, full stack developer, and AI developer, I build mobile apps, SaaS products, web applications, backend systems, dashboards, and internal tools. ⚡ AI-assisted development backed by production experience. I use AI to accelerate delivery while taking responsibility for the software architecture, user experience, security, database architecture, and code your business depends on. Why 70+ product owners have chosen me: - Extremely versatile full stack mobile app developer: Frontend development, backend development, databases, API integrations, authentication, and launch, with one developer who understands how all the pieces fit together. - Reliable communication. Prompt responses, clear explanations, and consistent communication throughout your project. What I can help you build: - Mobile App Developer for iOS & Android: I build cross-platform applications with Flutter and native iOS apps with Swift, including user interfaces, backend integration, in-app subscriptions, push notifications, and mobile app analytics. - Flutter Developer for cross-platform apps: One codebase for iOS and Android with Flutter and Dart, backed by Firebase or Supabase. If you’re looking for a Flutter developer who has shipped subscription apps to both stores, that’s most of what I do. - iOS Developer for native apps: Swift and SwiftUI apps for iPhone and iPad. Upwork ranks me in the top 1% of iOS developers and Swift developers. - Full Stack Developer for SaaS & Web Apps: Web applications, admin dashboards, and internal tools with React, Node.js, Firebase, and Supabase. - MVP Development & App Rescue: I finish projects a previous Flutter developer left incomplete, fix bugs, and take AI-built prototypes to production with authentication, database integration, payments, and secure APIs. - AI Developer for Agents & Automation: AI agents, chatbots, and workflow automation with OpenAI and LLM integrations, connected to your business data. Credibility: ✔️ An app featured on Apple’s list of Best Language Learning Apps. ✔️ Featured in Business Insider for my work as a mobile app developer on Upwork. ✔️ Recognized as a Top Mobile App Developer for hire in the United States, 2020–2026. ✔️ Upwork rankings: Top 1% of Mobile and iOS Developers; Top 1% of Firebase and Swift Developers. ✔️ Bachelor’s Degree in Computer Science from Michigan State University. 💬 Client feedback: “I've been a software dev manager for over 20 years and Michael is extremely efficient and easy to work with. He built an iOS and Android app in Flutter for me and was able to keep a very tight schedule on track.” — Joel K., REFIT “His exceptional skills and dedication transformed my project from a manual process into a fully automated system, saving me both time and money.” — Jim C., Sports Analytics “Michael is an extremely talented iOS developer, provides total commitment and delivers very high quality code very productively.” — Rachel, Purpose “Michael is a skilled Flutter developer, who quickly understood the project and added valuable solutions.” — Paul D. “Michael is one of the best iOS developers you can get on this platform hands down.” — Nastassia P., startup founder Let’s talk about what you’re building. Whether you need a mobile app developer or help integrating AI into your product, message me for a complimentary 30-minute discussion about your goals and next steps. 𝗧𝗵𝗲𝗿𝗲'𝘀 𝗮 𝗹𝗼𝘁 𝗼𝗳 𝗔𝗜 𝗼𝗻 𝗵𝗲𝗿𝗲 𝘁𝗵𝗲𝘀𝗲 𝗱𝗮𝘆𝘀, 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝗳𝗼𝗿 𝗮 𝗿𝗲𝗮𝗹 𝗰𝗵𝗮𝘁. One developer across your product: You can bring me in as a mobile app developer for your iOS and Android app, as a Flutter developer for a cross-platform build, or as an iOS developer for a native Swift app. When your app also needs a backend, a web dashboard, or AI features, I can build the connections between them. One developer fits all.