Hire the Best iOS Developers
in Ukraine

Most developers write code. I build scalable digital products. With over a decade of experience engineering solutions for startups and enterprise clients alike, I specialize in turning complex requirements into robust, user-friendly applications. My core expertise lies in the Apple ecosystem—delivering native performance on iOS and macOS using Swift/Obj-C, SwiftUI, and UIKit—while leveraging full-stack capabilities to ensure seamless data flow and system architecture. What I bring to your project: * Deep Native Expertise: Extensive experience with Swift, SwiftUI, Combine, and modern Apple frameworks. I focus on writing clean, maintainable code that adheres to SOLID principles and industry best practices. * Full-Stack Versatility: Backend development with Node.js, Python, and Go, ensuring your mobile app is backed by reliable, secure, and scalable infrastructure. * Cross-Platform Solutions: Proficient in Flutter and React Native when a unified codebase is the strategic choice for speed-to-market. * Product Mindset: I don't just close tickets; I analyze business goals, anticipate technical bottlenecks, and propose architectural decisions that save time and money in the long run. I pride myself on clear communication, proactive problem-solving, and delivering high-quality results. Whether you need a complete application from scratch, a complex feature integration, or expert consulting to optimize your existing stack, I am here to help you succeed. 100% Job Success. Top Rated. Let’s discuss how we can bring your vision to life.

👨‍👩‍👦‍👦 Kids: 4. 🐕Dogs: 2. 📱 Mobile Apps: 80+. 🏥 I build great healthcare apps. My handwriting is like a real doctor's. ⏰ Deadlines - never missed. Family birthdays... - sorry, Mom. --- I am mobile app developer with 14+ years of mobile app development, 80+ apps shipped, and a Flutter app past 2M+ users. ⭐ Top Rated on Upwork since 2018 · 5.0 on Clutch · 4.93 on GoodFirms If you're starting a Flutter app from scratch, I take it from concept to the App Store. If your iOS or Android app has stalled, I get it shipping again. If a previous mobile app developer missed what you needed, that's where I usually come in. 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝗴𝗲𝘁 ✔️ As a Flutter developer I ship one codebase to iOS and Android at once, up to 40% cheaper than two native builds. ✔️ I am mobile app design and mobile app development specialist. No handoffs, no two contractors blaming each other. ✔️ Healthcare apps that pass HIPAA and GDPR. Logistics apps that keep working when the signal drops. ✔️ Hire the wrong mobile app developer and the scope gaps surface at the first build. I flag them earlier, and clients have brought me in to redo exactly that. ✔️ 80+ apps in, I have already hit the problems your build will run into. One app I built passed 2M+ users. Send me what you're building and I'll reply with a scope estimate and the first technical decision I'd settle. Best, Stan ————— Selected work and skills: HEALTHCARE APP DEVELOPMENT, 25+ projects - I am Healthcare App Developer with 5,000+ secure patient transfers a year across a 25+ vehicle fleet and a 24/7 control room. - I am HIPAA Developer with secure PHI handling for 5,000+ patient records - HL7 FHIR syncing records across 3 hospital systems - GDPR compliance on 100% of builds - Healthcare Apps prompting status updates every 30 minutes across 4 job levels - Healthcare SaaS development, Secure Care UK: replaced a third-party subscriber platform, cutting running costs $3,000+ a month. - I am Full Stack Developer Healthcare, Secure Care UK across web and mobile: 5,000+ transfers coordinated from one system. - I am Flutter developer, Patient Gateway UK medical transport: Firebase sync and real-time driver tracking with dispatch updates under 5 seconds. - Flutter Developer, Rheo health wearable: 5 vital-sign categories streamed over LTE in real time, secure PHI handling tested across iOS, Android, and web. - Mobile App Developer, fertility health app: bug-free rate raised 85% to 96% in a two-week retest, delivered in 3 months against a 4-month estimate. LOGISTICS APP DEVELOPMENT, 20+ projects - I am Logistics App Developer with last-mile delivery app: satisfaction raised 35% to 85%, wait times cut 34% in low-signal areas, 12 partners signed in 3 months. MOBILE APP DEVELOPMENT, 80+ apps - Flutter developer, mobile app development: 30+ Flutter projects, build cycles cut 50% and costs 40% vs native with Flutter development. - Flutter App Developer: 2 app stores from one Flutter codebase, 50,000+ installs in year one. - Mobile App Developer, Quran learning app: 2M+ users, rebuilt in 4 months. - Flutter Developer, train ticketing app: shipped in 6 months against a 7-month deadline, NFC storing 5 tickets offline across 20 screens. - iOS Developer and Swift iOS Developer: native iOS apps shipped since 2012 in Swift, one rebuilt to full feature parity in 8 weeks. - Android App Developer: rebuilt an unstable Android app, crashes cut 90% and rating lifted to 4.7. - Mobile app developer, Android Developer and Mobile Developer: native and cross-platform mobile development across 80+ apps. FULL STACK - I am Full Stack Developer: 150+ products shipped end to end, frontend, backend, and database. - Full Stack Mobile Developer: frontend plus backend on 30+ products, delivered end to end. MOBILE APP DESIGN, 40+ designs - I am Mobile app designer, mobile app design expert: 70+ wireframes and 40+ mobile app designs, engagement up 40%. - Mobile UI UX Design: consistent UI across both platforms on 40+ screens, task completion up 30%. - Mobile App UI UX Design in Figma: Figma App Design and Figma Mobile App Designer work across 35+ flows. REACT NATIVE - React Native Developer and React Native Development: 10+ React Native apps on the App Store and Google Play as a React Native Developer Expo, React Native App Developer, and React Native Expert, spanning React Native Expo, React Native iOS, React Native Firebase, and React Native UI UX, with 12-19% better repeat usage. - AI App Developer and AI Mobile App Developer: AI Mobile App Development adding on-device intelligence that cut manual work 60%. FlutterFlow developer prototypes built 3x faster in FlutterFlow. Full Stack App Developer with Python and Wordpress backends, React Native, and mobile React apps across 30+ products. iOS Development, Android App Development, Swift, Node.js, PHP, JavaScript, Java, Desktop Application, Web Design.

Dedicated iOS Developer specializing in Swift. I combine a Computer Science background with a strong commitment to delivering engaging, high-quality mobile solutions. Let's collaborate to build your next amazing application.

I'm a senior iOS developer with more than 20 years programming background. I experienced in full-cycle mobile development including architecture design. As an advantage, I have strong skills in network and low-level programming, that helps me write maximum effective code where it needed. My practice caver other platforms like Android, back-end using Ruby On Rails and React Native for mobile. During last 15 years, I working on high-quality iOS applications for different industries, including medicine, marketing, advertisement, etc as a developer, team-lead, and project manager. Last 8 years - as a freelancer on UpWork. It's important to me to create supportable and upgradable applications. I prefer to build long-term relations with my customers. When they come back to add support for new mobile devices or new features - I always glad to see that application continue its life. I'm open to working as a part or lead of the team or as an individual developer.

Specialized in Swift and SwiftUI. Doing all kinds of things with Accelerate and Vision frameworks. Special skill to find and fix bugs and eliminate bottlenecks, woodpecker of the code, making your codebase healthy.

I'm Roman, CEO and co-founder of Define Solutions. We've been building iOS apps since 2016 and have since shipped over 200 projects with 15 million downloads across the App Store. Over the years we've built across pretty much every category — fitness and health tracking apps, map-heavy apps with complex location logic, entertainment and lifestyle apps, news and media apps, music apps, restaurant and food ordering apps, online stores, social apps, e-readers and book apps, iPad-specific builds, Apple Watch companions, and CarPlay integrations. A significant part of our work has also been with large enterprise clients — internal tools and customer-facing apps for companies operating at serious scale. Some projects came to us as a clean brief, some came half-built from another team. We've handled both. The stack we work with: Swift, SwiftUI, UIKit, Core Data, CloudKit, HealthKit, CoreMotion, WatchKit, CarPlay, MusicKit, CoreAudio, MediaPlayer, MapKit, CoreLocation, WidgetKit, Live Activities, AVFoundation, StoreKit 2, RevenueCat, Apple Pay, PassKit, CoreBluetooth, CoreML, PushKit, CallKit, REST APIs, Firebase, PostgreSQL, MySQL, Supabase, AWS, Google Cloud, Fastlane, CI/CD Ad monetization: AdMob (+AdMob Mediation), AppLovin (+MAX Mediation), IronSource (+Unity LevelPlay Ad Mediation) One thing you learn after 200+ projects — good code isn't enough on its own. The projects that go smoothly are the ones where scope is locked before development starts, App Store requirements are accounted for from day one, and everyone has the same picture of the finish line. Making sure that foundation is solid before a single line is written is how we start every engagement. If you have an iOS project — message me. I'll tell you within a day whether it's something we can help with and roughly what it would take.