Hire the Best BlackBerry App Development Specialists

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Stanislav K.

Ivano-Frankivsk, Ukraine

$35/hr
5.0
51 jobs

Mobile app developer with 14+ years of mobile app development, 80+ apps shipped, and a Flutter app past 2M+ users. โญ Top Rated on Upwork since 2018 ยท 5.0 on Clutch ยท 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 actually needed, that's where I usually come in. ๐—ช๐—ต๐—ฎ๐˜ ๐˜†๐—ผ๐˜‚ ๐—ด๐—ฒ๐˜ โœ”๏ธ As a Flutter developer I ship one codebase to iOS and Android at once, up to 40% cheaper than two native builds. โœ”๏ธ The mobile app design and the mobile app development come from the same person. No handoffs, no two contractors blaming each other. โœ”๏ธ Healthcare apps that pass HIPAA and GDPR. Logistics apps that keep working when the signal drops. โœ”๏ธ 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. โœ”๏ธ 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. Clients come back a year in after hiring the wrong mobile app developer first; early hires save months. ๐—ฅ๐—ฒ๐—ฎ๐—ฑ๐˜† ๐˜„๐—ต๐—ฒ๐—ป ๐˜†๐—ผ๐˜‚ ๐—ฎ๐—ฟ๐—ฒ Best, Stan โ€”โ€”โ€”โ€”โ€” Selected work and skills: HEALTHCARE APP DEVELOPMENT, 25+ projects - Healthcare App Developer, Secure Care UK medical transport: 5,000+ secure patient transfers a year across a 25+ vehicle fleet and a 24/7 control room. - HIPAA Developer, 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. - Full Stack Developer Healthcare, Secure Care UK across web and mobile: 5,000+ transfers coordinated from one system. - 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 - Logistics App Developer, 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% versus native through Flutter development. - Flutter App Developer, Ziroop: 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, government 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 store rating lifted to 4.7. - Mobile app developer, Android Developer and Mobile Developer: native and cross-platform mobile development across 80+ apps. FULL STACK - 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 - Mobile app designer, mobile app design: 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. MORE - 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. SKILLS: iOS Development, Android App Development, Swift, Node.js, PHP, JavaScript, Java, Desktop Application, Web Design.

  • Desktop Application
  • React
  • Node.js
  • PHP
  • JavaScript
  • Android App Development
  • iOS Development
  • Android
  • Swift
  • React Native
  • WordPress
  • Flutter
  • Java
  • HTML
  • CSS
  • Python
  • Git
  • Angular
  • Software Development
Manish K.

Mohali, India

$20/hr
5.0
8 jobs

๐„๐ฑ๐ฉ๐ž๐ซ๐ญ ๐Œ๐จ๐›๐ข๐ฅ๐ž ๐€๐ฉ๐ฉ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ž๐ซ | 7+ ๐˜๐ž๐š๐ซ๐ฌ ๐จ๐Ÿ ๐„๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž | ๐€๐ง๐๐ซ๐จ๐ข๐ (๐‰๐š๐ฏ๐š,Kotlin) โ€ข ๐…๐ฅ๐ฎ๐ญ๐ญ๐ž๐ซ (๐ƒ๐š๐ซ๐ญ) โ€ข ๐ข๐Ž๐’ โ€ข ๐‡๐ฒ๐›๐ซ๐ข๐ ๐€๐ฉ๐ฉ๐ฌ Are you looking for a versatile and reliable Mobile App Developer who can transform your ideas into feature-rich, scalable, and high-performing applications? ๐–๐ข๐ญ๐ก ๐Ÿ—+ ๐ฒ๐ž๐š๐ซ๐ฌ ๐จ๐Ÿ ๐ฉ๐ซ๐จ๐ฏ๐ž๐ง ๐ž๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž, ๐ˆ ๐ฌ๐ฉ๐ž๐œ๐ข๐š๐ฅ๐ข๐ณ๐ž ๐ข๐ง ๐›๐ฎ๐ข๐ฅ๐๐ข๐ง๐  ๐œ๐ฎ๐ฌ๐ญ๐จ๐ฆ ๐ฆ๐จ๐›๐ข๐ฅ๐ž ๐š๐ฉ๐ฉ๐ฌ ๐ญ๐ก๐š๐ญ ๐๐ž๐ฅ๐ข๐ฏ๐ž๐ซ ๐ฌ๐ž๐š๐ฆ๐ฅ๐ž๐ฌ๐ฌ ๐ฎ๐ฌ๐ž๐ซ ๐ž๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž๐ฌ ๐จ๐ง ๐€๐ง๐๐ซ๐จ๐ข๐, ๐ข๐Ž๐’, ๐š๐ง๐ ๐‚๐ซ๐จ๐ฌ๐ฌ-๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ (๐…๐ฅ๐ฎ๐ญ๐ญ๐ž๐ซ). I started my career developing native Android apps using Java on Android Studio, gaining in-depth expertise in app architecture, UI/UX implementation, and performance optimization. Later, ๐ˆ ๐ฆ๐š๐ฌ๐ญ๐ž๐ซ๐ž๐ ๐…๐ฅ๐ฎ๐ญ๐ญ๐ž๐ซ & ๐ƒ๐š๐ซ๐ญ, ๐ฐ๐ก๐ข๐œ๐ก ๐ž๐ฆ๐ฉ๐จ๐ฐ๐ž๐ซ๐ž๐ ๐ฆ๐ž ๐ญ๐จ ๐›๐ฎ๐ข๐ฅ๐ ๐œ๐ซ๐จ๐ฌ๐ฌ-๐ฉ๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ ๐š๐ฉ๐ฉ๐ฅ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ with a single codebase by saving clients time, cost, and resources while maintaining top-notch performance. Over the years, Iโ€™ve worked on a wide range of projects across industries like E-commerce, Healthcare, Fintech, Travel, Education, On-Demand, and Social Networking, delivering apps that not only function flawlessly but also delight end-users. โœ… ๐‚๐จ๐ซ๐ž ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ & ๐„๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž ๐Œ๐จ๐›๐ข๐ฅ๐ž ๐€๐ฉ๐ฉ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: - Native Android Development (Java, Android Studio, SDKs, Material Design) - Flutter & Dart (Cross-Platform Apps for iOS & Android) - Hybrid App Development (Single codebase, multi-platform delivery) - App Deployment (Google Play Store & Apple App Store) ๐€๐ฉ๐ฉ ๐…๐ž๐š๐ญ๐ฎ๐ซ๐ž๐ฌ & ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง๐ฌ: - RESTful APIs, GraphQL, and third-party API integrations - Firebase (Realtime DB, Firestore, Authentication, Push Notifications, Analytics) - Payment Gateway Integration (Stripe, PayPal, Razorpay, In-App Purchases) - Maps & Location Services (Google Maps, GPS Tracking, Geo-fencing) - Real-Time Chat & Notifications (Socket.IO, Twilio, Firebase Messaging) - Audio/Video Streaming & Media Management ๐”๐ˆ/๐”๐— & ๐…๐ซ๐จ๐ง๐ญ๐ž๐ง๐: - Modern UI Design Implementation (Material Design, Cupertino Widgets, Responsive Layouts) - State Management (Provider, Riverpod, Bloc, Redux) - Figma & Adobe XD prototyping to pixel-perfect app UI ๐๐š๐œ๐ค๐ž๐ง๐ & ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ: - Firebase, SQLite, MySQL, PostgreSQL - Secure Authentication (JWT, OAuth 2.0, Social Logins) - Data Encryption & GDPR/HIPAA-ready solutions ๐€๐ฉ๐ฉ ๐“๐ž๐ฌ๐ญ๐ข๐ง๐  & ๐Ž๐ฉ๐ญ๐ข๐ฆ๐ข๐ณ๐š๐ญ๐ข๐จ๐ง: - Unit Testing, Integration Testing, UI Testing - Bug fixing, performance tuning, and crash resolution - Ongoing app maintenance and version upgrades ๐ˆ๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ข๐ž๐ฌ ๐ˆโ€™๐ฏ๐ž ๐–๐จ๐ซ๐ค๐ž๐ ๐ˆ๐ง: - Healthcare (EHR integrations, telemedicine) - E-Commerce & Marketplaces (Product search, secure payments, cart systems) - Fintech (Wallets, payment gateways, KYC/AML compliance) - Education (e-learning, virtual classrooms, gamified learning) - Logistics & Transportation (Fleet tracking, delivery optimization) - Real Estate (Property listings, CRM systems, virtual tours) - Fitness & Wellness (Wearable integration, progress tracking, community apps) - Social Media (Interactive feeds, chat, live streaming, push notifications) ๐–๐ก๐ฒ ๐‚๐ก๐จ๐จ๐ฌ๐ž ๐Œ๐ž? โœ” 9+ years of hands-on mobile app expertise (native + hybrid) โœ” Proven track record of building smart, scalable, and future-ready apps โœ” Strong focus on quality, performance, and intuitive UX โœ” Transparent communication, on-time delivery, and long-term support โœ” 100% commitment to client satisfaction & project success ๐˜๐จ๐ฎ๐ซ ๐ฌ๐š๐ญ๐ข๐ฌ๐Ÿ๐š๐œ๐ญ๐ข๐จ๐ง ๐ข๐ฌ ๐ฆ๐ฒ ๐ซ๐ž๐ฌ๐ฉ๐จ๐ง๐ฌ๐ข๐›๐ข๐ฅ๐ข๐ญ๐ฒ. ๐ˆ ๐ญ๐ซ๐ž๐š๐ญ ๐ž๐ฏ๐ž๐ซ๐ฒ ๐ฉ๐ซ๐จ๐ฃ๐ž๐œ๐ญ ๐ฅ๐ข๐ค๐ž ๐ฆ๐ฒ ๐จ๐ฐ๐ง ๐š๐ง๐ ๐ž๐ง๐ฌ๐ฎ๐ซ๐ž ๐ข๐ญ ๐๐ž๐ฅ๐ข๐ฏ๐ž๐ซ๐ฌ ๐ซ๐ž๐š๐ฅ ๐ฏ๐š๐ฅ๐ฎ๐ž ๐ญ๐จ ๐ฒ๐จ๐ฎ๐ซ ๐›๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ. Letโ€™s connect today and bring your mobile app idea to life!

  • Kotlin
  • Flutter
  • Dart
  • Mobile UI Design
  • Mobile App Development
  • Android App Development
  • Hybrid App Development
  • Hybrid App
  • Firebase Cloud Firestore
  • Firebase Realtime Database
  • API Integration
  • AI App Development
  • Mobile App Testing
  • Cross Browser & Device Compatibility
  • Mobile Payment Functionality
  • HTML
Atendra S.

Ghaziabad, India

$20/hr
4.9
79 jobs

โœ… 12+ Years in Mobile Development ๐Ÿ† Top Rated | Kotlin, iOS, SDKs, BLE, VoIP & System-Level Android Apps I help businesses build stable, production-ready Android/iOS applications designed for long-term reliability, scalability, and real-world usage. Over the last 12+ years, Iโ€™ve worked on Android/iOS apps ranging from consumer products to enterprise systems, including VoIP platforms, Android SDKs, BLE integrations, location tracking systems, streaming apps, and custom Android OS-level features. My focus is building and maintaining Android/iOS systems that remain stable, maintainable, and performant over time. ๐Ÿš€ What I can help you with: โœ… Native Mobile App Development (Kotlin & iOS) โœ… Android SDK Development & Integration โœ… BLE (Bluetooth Low Energy) Applications โœ… VoIP, Audio/Video Calling & Streaming Apps โœ… Background Services & Foreground Services โœ… Existing App Maintenance & Bug Fixing โœ… Play Store Release & Compliance โœ… Performance Optimization & Stability Improvements โœ… Custom Android OS / System-Level Features โœ… Long-Term Product Development & Support โš™๏ธ Core Android Expertise: โœ” Jetpack Compose & Modern Android Architecture โœ” MVVM, Clean Architecture & Modular Codebases โœ” Firebase, Firestore & Realtime Systems โœ” REST APIs, WebSockets & SignalR โœ” Google Maps & Real-Time Location Tracking โœ” Media Streaming & Real-Time Communication โœ” Offline Storage & Sync Solutions โœ” Push Notifications & Background Processing โœ” In-App Purchases & Subscription Systems โœ” Kiosk Mode & Device Management ๐Ÿ”ฅ Specialized Experience: โœ” Android SDK development used across multiple applications โœ” BLE communication & external device integrations โœ” WebRTC, Twilio & Linphone integrations โœ” Enterprise Android systems with long-term maintenance โœ” Performance-critical and reliability-focused Android apps ๐Ÿข Some Projects & Domains Worked On: โœ” Spirit Airlines โœ” Santander UK โœ” Plickers โœ” Ringplan VoIP โœ” Tracking & Logistics Applications โœ” Enterprise Cargo & Retail Systems I personally oversee projects from architecture to final delivery. For larger engagements, I collaborate with my in-house team of 25+ developers across Android, iOS, Flutter, backend, QA, web, and DevOps - giving clients a single point of contact backed by complete execution support. If you're building a new Android/iOS product, scaling an existing app, or solving complex Android/iOS issues, feel free to message me. Happy to review your app or requirements before we start.

  • Android App Development
  • Kotlin
  • Java
  • Android SDK
  • Mobile App Development
  • VoIP
  • WebRTC
  • Firebase
  • JetPack
  • In-App Purchases
  • Wear OS
  • Mobile Device Management Software
  • AI App Development
  • AI Mobile App Development
  • AI Development
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

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

Kyiv, Ukraine

$35/hr
5.0
47 jobs

โ—๏ธBairro raised $6M after we helped take the product from 0 to 1 with Mobile App Development and Web Development. With 200k+ downloads, this is a strong case of how the right digital product strategy converts into measurable business traction. ๐Ÿ“Œ 57+ Successfully Delivered Projects across 35+ industries centered around Mobile App Development ๐Ÿ’ช 6+ years building systems designed for scalable Mobile App Development โœ… 100% Job Success | Rated 5.0 by 20+ Clients โญ๏ธ ๐Ÿ‘‹ Hey there! White Digital is a company fully dedicated to Mobile App Development and Web Development. App Development defines our structure and long-term strategy. As a trusted App Developer partner, we turn ideas into scalable products. ๐Ÿ™Œ Our expertise spans Flutter mobile app development acros multiple industries. Every Mobile App Developer follows quality benchmarks, and our Mobile App Developer leadership ensures clarity. We have delivered Mobile App Development flutterflow solutions for Fitness App platforms, Wellness App products, Health App systems, Restaurant App solutions, and Marketplace Platform ecosystems. ๐ŸŽWe also do ios mobile app development. Our iOS App standards follow guidelines for a wow UX. Every iOS App project starts with deep discovery, and iOS App architecture aligns with scalability. iOS App performance optimization and iOS App testing guarantee stability. Our ios app development methodology covers the full lifecycle, and ios app developer expertise ensures pixel-perfect execution. Thoughtful ios app design drives conversion, while ios app icon creation follows platform best practices. iOS App delivery remains a top priority backed by a product-oriented iOS App strategy. Each iOS App is a unique challenge, and iOS App refinement continues post-launch. iOS App review catches edge cases, iOS App analytics supports iteration. Advanced iOS App architecture handles complex features, iOS App security follows best practices. iOS App milestones are tracked against KPIs, iOS App scalability is built into every sprint. iOS App CI/CD pipelines accelerate releases, iOS App accessibility ensures inclusive design. Every iOS App update goes through rigorous QA, iOS App feedback informs our iOS App roadmap. iOS App remains central to our iOS & Android delivery, ensuring iOS App consistency across touchpoints. iOS App excellence drives everything we ship. Reliable iOS App infrastructure and iOS App monitoring complete the picture. ๐Ÿค– Android Developer expertise is equally critical. Every Android Developer brings deep platform knowledge, and Android Developer decisions shape product quality. Android Developer standards align with Google best practices, Android Developer code reviews ensure maintainability. Android Developer testing automation speeds releases, Android Developer profiling guarantees smooth UX. An experienced Android Developer handles integrations while a senior Android Developer mentors the team. Android Developer architecture follows clean patterns, Android Developer CI/CD streamlines deployments. Each Android Developer sprint delivers progress, Android Developer documentation supports handoff. Our android developer kotlin expertise enables native solutions. Android Developer scalability ensures future-proof products, Android Developer security protects user data. We bring android game developer experience to engagement-driven platforms. Android Developer analytics track behavior, Android Full stack Developer accessibility is non-negotiable. Android Developer milestones validate against business goals, Android Developer collaboration ensure UI consistency. Android Developer QA catches regressions, Android Developer releases follow strict protocols. Every Android Developer is a product thinker, and Android Developer vision shapes outcomes. Android Developer feedback accelerates iteration, Android Developer mentorship builds strength. Our app developer ios android approach ensures quality. Android Developer ownership extends beyond code. Android Developer standards define our native delivery. A strong Android Developer culture drives Android Developer results. ๐ŸŽฏ AI mobile app development plays a central role in our roadmap. We delivered AI App products that improved hiring confidence by 35% and cut trip planning time by 80%. Scalable AI mobile app development strengthens intelligence. ๐Ÿ”— React Native is a key direction. Our React Native Developer team ensures consistency, and strategic react native implementation reduces time-to-market. ๐Ÿ“ฑ Every mobile developer works product-first. We built products integrating BLE Wearable technology, Booking System platforms, and Social Media features across 10,000+ user ecosystems. ๐ŸŽจ A professional designer is involved at every stage, building intuitive interfaces. We also have flutter developers, ios developers, and web developers. Don;t do shopify development. I am the BM and Product Manager at White Digital โœ… ๐Ÿ“ฉ If you're looking for a strategic partner - write me!

  • App Development
  • Product Development
  • International Development
  • Mobile App
  • App Design
  • Mobile App Development
  • Mobile App Design
  • Android App Development
  • Web Development
  • Web Design
  • Smartphone
  • iOS Development
  • Mobile App Redesign
  • Software Development
  • Android
  • Mobile App Testing
  • Software Debugging
  • Software Architecture & Design
  • Git
Andrey C.

Los Angeles, California

$35/hr
4.8
97 jobs

๐Ÿ…ท๐Ÿ…ด๐Ÿ†ˆ ๐Ÿ‘‹ Hi! Iโ€™m a veteran full stack developer, mobile app developer, and team lead leading a senior long-term team capable of taking products from idea โ†’ launch โ†’ scale โ†’ maintenance. Iโ€™ve been in professional software development for 25+ years and mobile app development for 17+ years, delivering scalable iOS Development, Android App Development, Flutter, React Native, and backend-driven platforms across startups, SaaS products, enterprises, and high-growth mobile ecosystems. Clients usually come to us when they need more than just coding - they need a technical partner who understands architecture, business logic, scalability, monetization, and long-term product growth. ๐Ÿ† Why Clients Choose Me โœ”๏ธ 25+ years as a full stack developer and software architectโ€จ โœ”๏ธ 17+ years in mobile app developmentโ€จ โœ”๏ธ 700+ mobile apps delivered across iOS, Android, Flutter & React Nativeโ€จ โœ”๏ธ Expertise in native app development, hybrid app development, and scalable backend systemsโ€จ โœ”๏ธ Reduced crash rates by up to 70% and improved app performance by 50% on production appsโ€จ โœ”๏ธ Built mobile platforms used by 5M+ users worldwideโ€จ โœ”๏ธ Strong experience with Mobile App Improvement, Mobile App Bug Fix, and modernization projectsโ€จ โœ”๏ธ Long-term experience with startups, SaaS companies, enterprises, and Fortune 500 clientsโ€จ โœ”๏ธ Full-cycle delivery: architecture โ†’ development โ†’ deployment โ†’ scaling โ†’ suppo As a mobile application developer, ios developer, android developer, flutter developer, and full stack developer, I specialize in building high-performance native and cross-platform mobile apps used by millions of users worldwide. I work with native iOS development using Swift, SwiftUI, UIKit, and Objective-C, native Android development with Kotlin and Java, as well as Flutter, React Native, and hybrid app development for scalable cross-platform delivery. Over the years, Iโ€™ve helped build 700+ apps across fintech, healthcare, social networking, education, entertainment, e-commerce, IoT, and enterprise SaaS. My experience covers the full mobile app development lifecycle - system architecture, UI/UX implementation, backend development, API Integration, DevOps, deployment, scaling, optimization, and long-term product evolution. ๐Ÿ“ฑ Native iOS & Android Development โ€ข Native iOS Development with Swift, SwiftUI, UIKit, Combine, Objective-C โ€ข Native Android App Development with Kotlin, Java, Jetpack Compose โ€ข Smartphone app optimization for performance, UX, and scalability โ€ข Clean Architecture, MVVM, VIPER, modular app structures โ€ข Device integrations: BLE, GPS, biometrics, camera, sensors, HealthKit, Google Fit โ€ข App Store & Google Play deployment pipelines โ€ข Multi-language apps with localization and accessibility support โ€ข Advanced performance optimization and memory management ๐Ÿ” Cross-Platform & Hybrid App Development โ€ข Flutter developer expertise for scalable cross-platform products โ€ข React Native development with custom native module integrations โ€ข Kotlin Multiplatform Mobile (KMM/KMP) โ€ข Shared business logic across iOS and Android โ€ข Adaptive UI systems and responsive mobile layouts โ€ข Cross-platform architectures reducing development time by 40โ€“60% ๐Ÿ”ง Backend, API Integration & Infrastructure โ€ข REST API and GraphQL API Integration โ€ข Firebase, Node.js, PHP, and scalable backend services โ€ข Authentication systems, caching, offline sync, token management โ€ข SQLite, Room, Realm, Core Data โ€ข Push notifications: FCM, APNS, OneSignal โ€ข Real-time chat, geolocation systems, dashboards, and live data platforms โ€ข Backend-connected mobile ecosystems with scalable cloud infrastructure โš™๏ธ DevOps, CI/CD & Delivery โ€ข Fastlane, GitHub Actions, Bitrise, Firebase App Distribution โ€ข Automated testing and deployment pipelines โ€ข Beta testing, crash analytics, staged rollouts โ€ข CI/CD optimization for faster and safer release cycles โ€ข AWS and scalable cloud deployment workflows ๐Ÿ“Š Analytics & Monetization โ€ข Firebase Analytics, Mixpanel, Amplitude, Google Analytics โ€ข In-app purchases, subscriptions, AdMob, Facebook Ads โ€ข Retention optimization and funnel analytics โ€ข Data-driven product iteration and growth optimization ๐Ÿ”Œ Advanced SDK & Hardware Integrations โ€ข AVFoundation, CameraX, Core Bluetooth, Core Motion โ€ข Stripe, Twilio, Agora, Sendbird, Mapbox, OpenCV โ€ข IoT dashboards, BLE integrations, voice/video systems โ€ข Camera-heavy and sensor-based mobile applications ๐ŸŒ Industries Served โ€ข Fintech & Banking โ€ข Healthcare & Fitness โ€ข E-commerce & Retail โ€ข Smart Home & IoT โ€ข Education & E-learning โ€ข Social Networking โ€ข Travel & Hospitality โ€ข Entertainment & Media โ€ข SaaS & Enterprise Platforms โœ… Letโ€™s Build a Mobile Product That Scales!

  • App Development
  • Mobile App
  • Flutter
  • Mobile App Development
  • Hybrid App Development
  • iOS Development
  • Android App Development
  • iPad App Development
  • Android
  • iOS
  • Smartphone
  • Swift
  • Objective-C
  • Firebase
  • Apple Xcode
  • API Integration
  • User Authentication
  • User Profile Creation
  • Kotlin
  • Mobile App Design

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