Hire the Best Android Developers
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👨‍👩‍👦‍👦 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 - As a React Native Developer running React Native Development, I have shipped 10+ React Native apps live on the App Store and Google Play. That work spans React Native Developer Expo, React Native App Developer, and React Native Expert roles, covering React Native Expo, React Native iOS, React Native Firebase, and React Native UI UX builds, and it lifted repeat usage 12-19%. Elsewhere, as an AI App Developer and AI Mobile App Developer, my AI Mobile App Development adds on-device intelligence that cut manual work 60%. As a FlutterFlow developer I turn out prototypes 3x faster in FlutterFlow, and as a Full Stack App Developer I run Python and Wordpress backends alongside React Native and mobile React apps across 30+ products. iOS Development, Android App Development, Swift, Node.js, PHP, JavaScript, Java, Desktop Application, Web Design.

Senior Android Developer with 12 years of production experience — from greenfield apps to maintaining and extending live codebases others built. I work with Kotlin, Jetpack Compose, Clean Architecture, MVVM, Hilt, and Coroutines. I'm comfortable jumping into unfamiliar code, figuring out what's going on, and making things better without breaking what already works. AI-assisted development is part of my daily workflow — Claude Code, GitHub Copilot — not as a novelty, but as a tool that helps me move faster and think more clearly. Apps I've contributed to span fintech, field operations, and insurance — different domains, same discipline: understand first, then act, ship clean code. I work well async and don't need hand-holding.

I'm a Senior Android Engineer with 9+ years of experience building and owning production mobile applications across Retail, Fintech, EdTech, Sports, Healthcare, Transportation, and Social products. My core expertise is Kotlin, Jetpack Compose, modern Android architecture, and Kotlin Multiplatform (KMP). I've built production KMP applications for Android and iOS with ~80% shared code, including shared UI with Compose Multiplatform. I’m comfortable taking a product from architecture to production independently — designing the architecture, writing the code, setting up CI/CD, managing releases, and maintaining the codebase long-term. Some highlights: • 10+ production mobile applications shipped • 2,000+ active users of an internal retail application • ~40% improvement in customer-service workflow efficiency after moving from a desktop-based workflow to mobile • 100K+ downloads for an EdTech application • 2 production KMP applications released for Android and iOS • ~80% shared code across Android and iOS I also have experience with: Kotlin • Jetpack Compose • Compose Multiplatform • KMP • Coroutines/Flow • Ktor • SQLDelight • Room • Retrofit • GraphQL • WebSockets • Hilt/Koin • Clean Architecture • MVI/MVVM • Multi-module architecture • Gradle • GitLab CI/CD • Firebase Beyond coding, I’m comfortable with technical planning, estimation, code and architecture reviews, and making decisions that shape the mobile technical direction. I work well both independently and in cross-functional teams, collaborating with Product Managers, CTOs, designers, clients, backend engineers, and other developers.

VoIP development, Asterisk, Bulk SMS, Virtual Phone numbers, IVR, SMS-API

👋 My team builds iOS and Android apps for fleet management, logistics, navigation/mapping, social media, AR, marketplace, healthcare and others. On Upwork I've held 60+ contracts and 8,000+ hours at 100% Job Success, with a 5.0 rating across 45+ reviews. Our average engagement runs longer than 3 months, and a lot of them have run for years (clients tend to keep us rather than replace us). 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐖𝐄'𝐕𝐄 𝐁𝐔𝐈𝐋𝐓 𝐅𝐎𝐑 - Rand McNally - navigation and fleet telematics - HORMANN Intralogistics - industrial logistics systems - Magna International - automotive software and mobility solutions - DOLBY - audio, video, and entertainment technologies - Sharpen Technologies - cloud contact center platform 𝐖𝐇𝐄𝐑𝐄 𝐎𝐔𝐑 𝐃𝐄𝐏𝐓𝐇 𝐈𝐒 𝐔𝐍𝐔𝐒𝐔𝐀𝐋 Most mobile teams can build a screen that shows a map. Fewer can keep tracking accurate when a driver loses signal inside a warehouse, keep the battery alive through a 10-hour shift, or reconcile offline data cleanly when the device reconnects. That's the work we've spent a decade on. - Fleet management, telematics, and driver-facing apps - Turn-by-turn navigation and route optimization (Mapbox, Google Maps, HERE Maps) - GIS, indoor mapping, and indoor navigation - Background location tracking and offline-first sync - Augmented reality: ARKit, ARCore, RoomPlan, LiDAR, SceneKit We also work in healthcare, marketplace, and social products, and the wider Volpis team covers web development, UX/UI design, QA, and business analysis when a project needs them. 𝐖𝐇𝐀𝐓 𝐌𝐘 𝐓𝐄𝐀𝐌 𝐖𝐎𝐑𝐊𝐒 𝐖𝐈𝐓𝐇 - iOS: Swift, SwiftUI, Objective-C - Android: Kotlin, Jetpack Compose, Java - Cross-platform: Flutter, Kotlin Multiplatform - Back-end: Node.js, Nest.js, Express, Firebase, MongoDB, REST APIs - Integrations: Stripe, Payfort, Twilio, Mapbox, Google Maps API - Monitoring: Crashlytics, Firebase Analytics, Mixpanel, New Relic 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐆𝐄𝐓 𝐁𝐘 𝐃𝐄𝐀𝐋𝐈𝐍𝐆 𝐖𝐈𝐓𝐇 𝐌𝐄 𝐃𝐈𝐑𝐄𝐂𝐓𝐋𝐘 - A real scope and a real timeline, not the one that wins the bid - I'll tell you when a feature isn't worth building - 50+ engineers, designers, and QA behind that conversation 𝐖𝐇𝐀𝐓 𝐈'𝐋𝐋 𝐍𝐄𝐄𝐃 𝐅𝐑𝐎𝐌 𝐘𝐎𝐔 The problem you're solving and who it's for. If you have designs, a repo, or a competitor you're benchmarking against, send those too. I'll come back with an honest scope and timeline before you commit to anything. Message me or click "Invite to Job" and tell me what you're building!

I am a professional Mobile developer with experience developing cross-platform applications for Android and iOS with Flutter and native Android applications with Android SDK.