Hire the Best Flutter Developers
in Poland

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Ihar P.

Krakow, Poland

$30/hr
4.2
42 jobs

Mobile Flutter Developer with DevOps expertise — building cross-platform iOS & Android apps and owning the full delivery pipeline: AWS, Kubernetes, Ansible, Terraform, CI/CD. 10+ years in software engineering. I deliver production-ready Flutter apps together with the infrastructure that builds, deploys, and runs them. Flutter Development: Flutter & Dart — performance optimization, clean architecture, responsive UI/UX State management — BLoC, Provider, MobX, Riverpod Animations & graphics — custom animations, CustomPainter, Rive/Lottie, shaders Maps & geolocation — Google Maps, Mapbox, real-time tracking Native integrations — platform channels, C++ libraries, real-time audio processing App Store & Google Play deployment, release management DevOps & Cloud Infrastructure: Infrastructure as Code — Terraform, Ansible; Kubernetes orchestration with Helm CI/CD — automated builds, testing, and deployments (GitHub Actions, Jenkins, GitLab CI, Fastlane, Docker), including mobile release pipelines to App Store and Google Play Monitoring & observability — Prometheus, Grafana Cloud platforms — AWS, Google Cloud (GCP), Hetzner; Linux server administration Firebase & Supabase — auth, real-time database, cloud functions, hosting Backend Development: Node.js, Python, Java, Dart backends API design — REST, GraphQL, gRPC, WebSockets Databases — PostgreSQL, MySQL, MongoDB, Redis, SQLite AI & LLM: AI/LLM integrations in production apps — OpenAI, Anthropic (Claude), Gemini APIs AI-assisted development workflow — Claude Code and OpenAI Codex Experience: multiple production apps delivered end-to-end as a solo developer — UI, backend, cloud infrastructure, and deployment automation. Comfortable owning a product fully or working inside an experienced team. I care about code quality, long-term maintainability, and delivering real value — not just completing tasks. If you need someone who understands mobile development, backend, and the infrastructure that connects them into a working product — I'd be glad to help. = = = Career Highlights = = = Oct 2024 – Present — Senior Flutter & DevOps Engineer Building production Flutter apps end-to-end with cloud infrastructure and deployment automation: AI/LLM-powered features, real-time systems, infrastructure as code. Working independently, owning products from UI to deployment. Stack: Flutter/Dart, Python, AWS & Google Cloud, Kubernetes, Terraform, Ansible, Docker, Firebase, Supabase, PostgreSQL, MySQL, Redis, MongoDB Dec 2018 – Oct 2024 — Senior Flutter Developer Six+ years of Flutter in production since its early releases: multiple apps shipped to App Store and Google Play, real-time and data-driven architectures, solo ownership from UI to backend. Stack: Flutter/Dart, Supabase, Google Cloud, Firebase, PostgreSQL, SQLite, Linux 2015 – 2018 — Full-Stack JavaScript Developer Web applications and data visualization for production use. Stack: JavaScript (React, D3), Node.js, Python/Django, MongoDB 2010 – 2013 — Java Developer Enterprise web applications. Earned Oracle Certified Professional, Java Programmer. Stack: Java, GWT, Oracle DB 2006 – 2008 — Web Developer First commercial projects; Linux as a daily driver since then. Stack: PHP, JavaScript, MySQL, Linux = = = Technologies = = = Flutter • Dart • BLoC • Provider • Riverpod • MobX • CustomPainter • Rive • Lottie • Google Maps • Mapbox • Push Notifications • Firebase Cloud Messaging • In-App Purchases • Hive • CI/CD pipeline • GitHub Actions • Jenkins • GitLab CI • Fastlane • Docker • Kubernetes • Helm • Terraform • CloudFormation • Ansible • Prometheus • Grafana • Bash scripting • AWS • EC2 • S3 • EKS • Lambda • Google Cloud • GCP • Firebase • Supabase • Linux • Node.js • Python • Django • PostgreSQL • MySQL • MongoDB • Redis • REST API • GraphQL • gRPC • WebSockets • LLM integration • RAG • AI chatbot • OpenAI API • Anthropic API • Claude API • Gemini API • Claude Code • OpenAI Codex • Stripe • App Store • Google Play

  • Flutter
  • Dart
  • Firebase
  • Mobile App Development
  • DevOps
  • Docker
  • Kubernetes
  • CI/CD
  • Terraform
  • Amazon Web Services
  • Ansible
  • Linux
  • PostgreSQL
  • Google Cloud Platform
  • Jenkins
  • Supabase
  • Node.js
  • Python
  • API Integration
  • Location-Based Service
Radomir K.

Wodzislaw Slaski, Poland

$35/hr
5.0
1 jobs

🚀 Mobile App Developer with 8+ years building high-performance iOS and Android applications that reach real users and drive real results. I specialize in cross-platform and native development using React Native, Expo, Flutter, FlutterFlow, and Swift - delivering polished, production-ready apps from concept to App Store launch. My background blends technical depth with a sharp sense for user experience and product thinking. Before going full-time into mobile development, I worked in digital marketing and e-commerce, which gave me a valuable edge: I don't just build apps - I build apps that convert, retain users, and perform in the real world. That marketing DNA means I understand mobile growth, push notification strategy, user onboarding flows, and ASO (App Store Optimization) at a level most developers simply don't. 🔧 WHAT I BUILD ✅ Cross-platform apps with React Native + Expo (single codebase for iOS & Android) ✅ Flutter & FlutterFlow apps - rapid UI development with pixel-perfect results ✅ Native iOS apps in Swift / SwiftUI for performance-critical use cases ✅ Real-time features: live chat, push notifications, geolocation, background sync ✅ Backend integrations: REST APIs, GraphQL, Firebase, Supabase, AWS Amplify ✅ Third-party SDKs: Stripe, RevenueCat, Twilio, Google Maps, OneSignal, Sentry ✅ App Store & Google Play deployment - certificates, signing, submission, review cycles ✅ Legacy app refactors, performance tuning, and code audits 💡 HOW I WORK I believe great mobile apps are built through clear communication, well-structured code, and relentless attention to detail. My workflow is transparent: I document decisions, write clean and maintainable code (TypeScript-first), and keep you in the loop at every milestone. I've worked with startups, scale-ups, and small businesses across the US and Europe - handling full project lifecycles solo or as part of distributed engineering teams. I adapt quickly to existing codebases, and I'm comfortable leading architecture decisions as well as executing within defined specs. I'm responsive, deadline-aware, and genuinely invested in the success of every product I touch. I treat your app like it's mine. 🛠 TECH STACK AT A GLANCE Mobile: React Native, Expo SDK, Flutter, FlutterFlow, Swift, SwiftUI, Objective-C (legacy) State Management: Redux Toolkit, Zustand, Riverpod, MobX, Context API Navigation: React Navigation, Expo Router, Flutter Navigator 2.0 Backend & Cloud: Firebase (Auth, Firestore, Storage, Functions), Supabase, Node.js, REST, GraphQL Databases: SQLite, Realm, AsyncStorage, Core Data DevOps & CI/CD: GitHub Actions, Fastlane, EAS Build, TestFlight, Bitrise Testing: Jest, Detox, Flutter Test, XCTest Design: Figma (can work from wireframes or full design specs) 🌍 INDUSTRIES SERVED E-commerce & retail apps | Health & fitness | Marketplace platforms | SaaS mobile clients | Social & community | On-demand services | EdTech | FinTech (payments, wallets) 📦 WHY CLIENTS CHOOSE ME → Full ownership from wireframe to live App Store listing → Strong English communication, US timezone overlap available → No disappearing acts - consistent updates and Slack/email availability → Experience with both greenfield projects and messy legacy codebases → Business-aware developer who thinks beyond the ticket Let's build something great together. Send me a message and let's discuss your project. KEYWORDS: mobile app developer, React Native developer, Flutter developer, Expo developer, iOS developer, Android developer, Swift developer, SwiftUI, FlutterFlow, cross-platform app, hire mobile developer, React Native freelancer, Flutter freelancer, app development, mobile app design, Firebase integration, Supabase, App Store submission, Google Play deployment, TypeScript mobile, Redux Toolkit, Zustand, Riverpod, REST API integration, GraphQL mobile, push notifications, Stripe in-app payments, RevenueCat subscriptions, real-time chat app, geolocation app, e-commerce mobile app, SaaS mobile client, startup app development, MVP development, app audit, performance optimization

  • Flutter
  • Firebase
  • Mobile App Development
  • React Native
  • Expo.io
  • FlutterFlow
  • Swift
  • SwiftUI
  • iOS Development
  • Android App Development
  • TypeScript
  • Supabase
  • REST API
  • GraphQL
  • App Store Upload
  • CI/CD
  • Node.js
  • Figma
  • Stripe
  • Push Notifications
Pavel C.

Bialystok, Poland

$34/hr
5.0
35 jobs

Hi everyone, I offer: 🔥𝐅𝐫𝐞𝐞 𝐭𝐞𝐜𝐡 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧, 𝐟𝐫𝐞𝐞 𝐞𝐬𝐭𝐢𝐦𝐚𝐭𝐢𝐨𝐧, 𝐜𝐨𝐝𝐞 𝐚𝐮𝐝𝐢𝐭, 𝐝𝐚𝐭𝐚 𝐫𝐞𝐯𝐢𝐞𝐰, 𝟑𝟎-𝐦𝐢𝐧 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐜𝐚𝐥𝐥, 𝐚𝐧𝐝 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞𝐝 𝐩𝐨𝐬𝐭-𝐥𝐚𝐮𝐧𝐜𝐡 𝐬𝐮𝐩𝐩𝐨𝐫𝐭🔥 Send me the word “ARCHITECTURE”, and 𝐈’𝐥𝐥 𝐫𝐮𝐧 𝐚 𝟑𝟎-𝐦𝐢𝐧𝐮𝐭𝐞 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐬𝐞𝐬𝐬𝐢𝐨𝐧 𝐭𝐨 𝐦𝐚𝐩 𝐲𝐨𝐮𝐫 𝐌𝐕𝐏 𝐨𝐫 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐢𝐧𝐭𝐨 𝐚 𝐛𝐮𝐥𝐥𝐞𝐭𝐩𝐫𝐨𝐨𝐟 .𝐍𝐄𝐓 𝐞𝐜𝐨𝐬𝐲𝐬𝐭𝐞𝐦, 𝐬𝐚𝐯𝐢𝐧𝐠 𝐲𝐨𝐮 𝐦𝐨𝐧𝐭𝐡𝐬 𝐨𝐟 𝐭𝐫𝐢𝐚𝐥 𝐚𝐧𝐝 𝐞𝐫𝐫𝐨𝐫. With 8+ years in Flutter, Dart, .NET MAUI, Xamarin, C#, Clean Architecture, MVVM, I build scalable, cross-platform apps for MVPs to enterprise SaaS. Portfolio & Key Projects: 📌 Clarity Locums – Healthcare Staffing App Multi-role scheduling, offline-first (Hive/LiteDB), push notifications, interactive maps, calendars & filters 📌 TaskMaverick – Enterprise Workflow Platform Flutter & cross-platform mobile, modular admin dashboards, offline support, CI/CD pipelines (Codemagic, AppCenter) 📌 FOREX dot com – FinTech Trading Platform Flutter Web & mobile dashboards, real-time data (REST API, WebSocket), optimized for 1M+ users 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ✔️Flutter/Dart: Mobile, Flutter Web, iOS/Android, responsive UI, adaptive layouts ✔️State Management: BLoC, Riverpod, Provider, Streams (RxDart) ✔️Architecture: Clean Architecture, MVVM, dependency injection (GetIt, Injectable) ✔️API & Data: REST API (http, Dio, Retrofit), Firebase (Auth, Firestore, Cloud Messaging), SQLite, Hive, Drift, Freezed/json_serializable, WebSockets ✔️Navigation: auto_route, deep linking, Flutter Navigator 1.0/2.0 ✔️Offline & Push: Offline-first, caching, push notifications, background sync ✔️Advanced Features: Platform channels, AI/TFLite integration, Flutter Localizations, Google Maps API, in_app_purchase, Flame engine, Remote Config, Crashlytics ✔️Dev Tools & CI/CD: Android Studio, Xcode, VS Code, Postman, Swagger, Git, Codemagic, AppCenter, Azure, Jira, Trello ✔️Industries: Healthcare, FinTech, Enterprise SaaS, Retail, Logistics, E-commerce Upwork Tags for Ranking: Flutter, Dart, Cross-Platform, Mobile App, BLoC, Riverpod, Provider, Clean Architecture, MVVM, Firebase, Hive, SQLite, REST API, Flutter Web, CI/CD, Offline-First, Push Notifications, Flutter Localizations, Google Maps API, Dio, Retrofit, AutoRoute, WebSockets, In-App Purchases, Flame, Remote Config, Crashlytics, iOS, Android, Cross-Platform Mobile, State Management, Dependency Injection, Freezed, JSON Serialization, Platform Channels

  • Flutter
  • Smartphone
  • Firebase
  • Mobile App Development
  • .NET Framework
  • C#
  • Xamarin
  • .NET Core
  • Mobile App
  • iOS
  • Android
  • Android App Development
  • iOS Development
  • Mobile Development Framework
  • ASP.NET Core
  • ASP.NET
  • REST API
  • Hybrid App Development
  • API Integration
  • HTML
Roman P.

Warsaw, Poland

$35/hr
5.0
13 jobs

🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 🏆 ✅ Mobile App Developer 7+ years of experience ✅ SaaS Mobile App Developer 5+ years ✅ 35 mobile app development jobs completed successfully ✅ Android and iOS Mobile Expert ✅ Built 27+ UX-first Mobile App development jobs for 22 companies ✅ On-Time and Cost-Effective Delivery ✅ Future-Proof Solutions Showing a Minimum 41% ROI ✅ 4354 mobile app development hours on Upwork and still counting ✅ 100% Job Success in mobile app development (Client Satisfaction Ratio) ✅ 98% of Clients Recommended working with me ✅ 80% Long-term Repeat Clients ✅ 7+ years of experience in mobile app development, 6 years experience in iOS mobile app development, 7 years experience in Swift and Kotlin, 4 years experience in Flutter, React Native, 2 years experience in KMM, KMP Full stack mobile app developer and mobile app UI UX designer with 7+ years of experience in Mobile App Development, specializing in iOS, Swift, Android, Kotlin, KMM, Kotlin Mutliplatform / KMP, React Native, and Flutter. I have successfully delivered 120+ mobile applications in different roles as mobile app developer, flutter app developer, flutter full stack developer, flutter flow, mobile app design, mobile ui ux designer, swift ios developer, android developer, kotlin developer, react native developer, mobile game developer achieving a 5-star rating on Upwork and helping clients scale their businesses with high-performance solutions. Apart from mobile app development, I specialize in Mobile App Design for both iOS and Android, as well as Web App Design for SaaS platforms. My expertise extends to Interaction Design, User Flow Design, and creating seamless User Experience (UX Design) and User Interface (UI Design). I follow a Design Thinking approach, ensuring every solution is user-centered and problem-solving. My process includes UI/UX Wireframing, Prototyping, and building Style Guides or UI-kits for consistent branding. I perform Design Audits and Design QA to maintain high standards across all projects. 🛠️ Design Tools: My designs come to life through powerful tools like Figma, Zeplin, and InVision for prototyping and collaboration. I leverage Adobe Illustrator, Adobe Photoshop, and Adobe XD for detailed visual design. For complex wireframes and flow mapping, I turn to Axure, Sketch, and Balsamiq. I also use Miro and Abstract for brainstorming and version control, while project communication and management happen in Slack and Jira. Our Expertise at a Glance • Mobile App Development: Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, Flutter, and more. • Website and Full Stack Development: Crafting seamless back-end experiences with .Net, Python, Java, Javascript, React.js, Angular.js, Node.js, MERN, MongoDB, PHP, etc. • Logo & UI/UX Design: Bringing your ideas to life with Adobe XD, Photoshop, Sketch, Figma, etc. • End-to-End Solutions: From logo design, UI/UX development, workflow setup, testing to deployment in app stores, we've got it all covered. We do not use v0.dev lovable.app CursorAI, Cursor, Windsurf, Trae, GitHub Copilot, Tabnine, Qodo, Devin AI, and AutoDev for speed up coding, we know other methods to do it efficiently. We offer a comprehensive range of development services across mobile, web, and cloud platforms. Our mobile app development expertise includes building Android and iOS applications using technologies such as Flutter, Swift, Objective-C, React Native, and Xamarin, optimized for both smartphones and tablets with a focus on cross-platform compatibility. In website and full stack development, we work with .NET technologies, including full stack .NET development, .NET Core, and Python with Django. Our team is experienced in developing both backend systems and user-friendly, responsive web interfaces, as well as working with various CMS platforms. Our DevOps and DevSecOps capabilities cover cloud infrastructure and automation, leveraging tools like AWS, Azure, Docker, Kubernetes, GitLab CI, Ansible, and Terraform to build secure and scalable deployment environments. We also build cross-platform and web applications using frameworks like Three.js and design tools such as Webflow, creating visually engaging and functional user experiences across devices. Additionally, we are well-versed in integration and automation tools, including WebSockets, data integration, the ABP Framework, Discord API, and Autotask, allowing us to create seamless connectivity and workflow automation between systems. Talent Good Knowledge, Talented, Experienced, Skilled, Strong Experience, Proven Experience, Agency, Team, Company, Specialist, Proven Track Record, Strong Background, Write Clean Code, Deep Expertise, Bring to Life, Cross-platform, Attention to Detail, Long Term. ⚡️ AVAILABLE FOR NEW PROJECTS ⚠️ Press Invite Button on my page and let's talk.

  • Flutter
  • Smartphone
  • Mobile App Development
  • iOS
  • Android App Development
  • Android
  • Swift
  • Kotlin
  • Android SDK
  • React Native
  • App Development
  • Mobile App
  • Mobile App Design
  • iOS Development
  • Hybrid App Development
  • Mobile App Redesign
  • Mobile UI Design
  • UI/UX Prototyping
  • UX & UI
  • Java
Yaroslav T.

Bielsko-Biala, Poland

$39/hr
4.4
40 jobs

💼 AI Developer | OpenAI developer | AI developer Zapier | Python data engineer for real-time data pipeline | AI developer LangChain 🏆 TOP RATED PLUS | 💰 $5M+ Client Revenue | 💼 111+ Projects Delivered | ✅ 11,000+ Upwork Hours 💡 Clients Achieved: 🚀 Faster delivery – AI systems cut weeks of manual work 💰 Revenue growth & efficiency – automated workflows and AI agents increased ROI ⏱️ Time savings – streamlined operations, reduced human effort ✅ Reliable, production-ready AI – systems deployed safely and scaled in real-world environments 📊 Data-driven insights – AI-powered analytics, RAG pipelines, and persona simulations improved decision-making I am an AI Developer and OpenAI developer specializing in designing and deploying production-ready AI systems that combine advanced machine learning models with scalable backend engineering. As an AI developer LangChain specialist and AI developer Zapier expert, I help businesses turn complex AI concepts into reliable real-world solutions. I also work as a python data engineer for real-time data pipeline development, building streaming, event-driven, and analytics systems for AI-powered applications. ⚡🤖 AI Agents & Autonomous Systems 🤖 As an AI Developer and AI developer LangChain engineer, I create intelligent agents capable of reasoning, planning, memory retention, and multi-step workflows. These systems integrate OpenAI developer APIs and AI developer Zapier automation layers for real business execution and reliability. Voice AI & Communication Platforms 🎙️ I develop low-latency real-time AI voice systems using Twilio and STT → LLM → TTS pipelines, built as an AI developer and OpenAI developer for scalable conversational AI with backend-controlled logic, interruption handling, and production deployment. RAG Pipelines & Data Intelligence 📚 As an AI developer LangChain specialist and OpenAI developer, I implement Retrieval-Augmented Generation pipelines for fast, accurate, and auditable access to internal data. This includes embeddings, metadata pipelines, vector databases (Pinecone, Qdrant, Weaviate), and python data engineer for real-time data pipeline architectures. Backend Engineering & Cloud Deployment ☁️ I build robust Python/TypeScript backend systems with FastAPI, Django, and Node.js, acting as both AI developer and python data engineer for real-time data pipeline solutions. I deploy scalable systems on AWS, GCP, and Azure using Docker, Kubernetes, monitoring, and autoscaling. 🚀 Selected Projects Monitoring & Summarization Tool ⚖️ – Automated regulatory updates, cutting manual review time and delivering clear summaries. Built by an AI Developer to make compliance faster and smarter. I Persona Simulation 👥 – Transformed Reddit discussions into interactive synthetic personas for marketing insights. Engaging AI experiences designed by an AI Developer. Centefuse AI – Content Generation ✍️ – MVP platform for automated social media content and scheduling. High-quality output with minimal client effort, engineered by an AI Developer. Waste Classification App ♻️ – Mobile AI solution for classifying and estimating waste quantities. Flexible, hardware-free, and efficient – crafted by an AI Developer. AI Script Generator 🎬 – Generative AI for screenwriters to structure stories and draft scripts quickly. Accelerates ideation while preserving creativity, built by an AI Developer. Client Testimonials ⭐⭐⭐⭐⭐ “Great work, very professional. Good at gathering input. Talented variety of staff.” – AI Chat, Recorded Calls, Coaching AI Platform ⭐⭐⭐⭐⭐ “Very professional and technically capable. He was able to work within my budget and deliver a top notch product.” – Marketplace Development II ⭐⭐⭐⭐⭐ “Outstanding work during the discovery phase. The team was prepared, communicated clearly, and proposed elegant, efficient solutions that exceeded our expectations.” – AI-powered Treatment Writer Why Clients Work With Me 💼 Delivery of clean, maintainable, production-ready AI solutions Expertise bridging AI models and backend engineering as an AI Developer Predictable results with scalable architectures Clear communication and collaborative approach

  • Artificial Intelligence
  • Machine Learning
  • Python
  • Generative AI
  • AI Bot
  • AI Chatbot
  • AI Agent Development
  • Automation
  • Computer Vision
  • AI Model Development
  • Deep Learning
  • JavaScript
  • n8n
  • API
  • Large Language Model
  • Data Science
  • TensorFlow
  • Retrieval Augmented Generation
  • Artificial Neural Network
  • AI Implementation
Marina P.

Olsztyn, Poland

$45/hr
5.0
54 jobs

🚀 The Top 3% of Talent in Mobile & AI-Powered Product Development 🤖 AI-Driven Mobile Engineer Building Apps That Scale Beyond MVP ⚡ AI-Assisted Engineering for Faster Delivery & Higher Product Quality 👉 WHAT YOU GET ✔️ Full Stack Mobile Developer - 22+ years experience, 2000+ builds, $700K+ client impact, end-to-end development ownership. ✔️ React Native Mobile App & Flutter Developer - 100+ interfaces, 18–27% user engagement lift, clarity and ultimate trust. ✔️ Mobile Application Developer - 30–40% faster launch cycles, cleaner UI/UX, stronger user retention across SaaS Mobile App ecosystems. 👉 ACHIEVEMENTS ✔️ 22+ years, 40,000+ hours, 2000+ products delivered as a full stack mobile developer, mobile app developer, and senior full stack developer ai and mobile application developer workflows. ✔️ $700K+ client impact, $900K+ direct revenue, 200+ successful MVPs, £11M annual business volume generated as a top-performing mobile app development expert. ✔️ 100,000+ active users where a custom react native mobile app developer execution lifted repeat engagement by 27% on a popular festival companion app. ✔️ 10,000+ users in Healthcare Platform and HIPAA-compliant systems where mobile application developer architecture cut clinical data friction by 40% using an intuitive doctor directory website interface. ✔️ 2,423 completed mobile orders, 34% faster handling in E-commerce Marketplace App and Fintech Platform deployments as a full stack developer. ✔️ 90% faster background sync, 80% lower crash workload, 65% fewer endpoint errors through API Integration, automated Stripe integration, and Flutter developer performance fixes. ✔️ 5–8 weeks shorter Startup MVP to Pilot Launch, 35% fewer critical production bugs through legacy code refactoring and clean continuous development pipelines. 👉 WHERE I DELIVER ✔️ As a mobile app developer - 200+ systems with pixel-perfect mobile app design, automated push notifications, and UI/UX design and development across SaaS Mobile App and Enterprise Mobile App architectures. ✔️ As an experienced mobile app developer - 15+ years of cross-platform engineering, delivering 30–40% faster iteration cycles for teams that need both iOS and Android apps from scratch. ✔️ As a full stack developer - 50+ end-to-end mobile + web platform setups with secure Node.js backend architecture, REST API deployment, and database scaling from Early-Stage MVP to live production. ✔️ As a react native mobile app specialist - building responsive mobile app react native mobile components for cross-platform app deployment, ensuring native-like feel across both iOS and Android. ✔️ As an AI App developer & AI Developer - leveraging cutting-edge ai platform development, ai development, and ai mobile development to build smart assistants, audio transcription apps, and image/vision processing products. ✔️ As a backend developer and javascript developer - writing highly maintainable server code in Node.js, Express, NestJS, and PHP (Laravel) with robust database integration via MongoDB, PostgreSQL, and Firebase/Supabase. ✔️ As a full stack mobile developer - driving ongoing support and maintenance, optimizing systems to fix bugs and improve performance with a dedicated team mindset. 👉 INDUSTRY IMPACT ✔️ Marketplace App & E-commerce - thousands of item listings, 20%+ higher checkout conversion as a mobile application developer and full stack developer. ✔️ Healthcare Platform & Telehealth - clinic workflows, 25%+ better data processing security as a senior mobile app developer. ✔️ AI Mobile App & AI Platform Development - OpenAI & Claude API smart integrations, automated recommendations, and custom conversational interfaces as an AI App developer. ✔️ Fintech Platform & SaaS Mobile App - secure in-app purchases, mobile subscriptions, multi-role access control, and seamless Stripe payment integrations. ✔️ Enterprise Mobile App & Workflow Automation - customized real-time chat, location-tracking (GPS/Google Maps), and mobile app + admin panel management tools. 👉 HOW I BUILD ✔️ 22+ years as a mobile app developer: built with cross-platform and native ecosystems using Swift, Kotlin, Java, Flutter, React Native, and native app infrastructure optimized for smartphone form factors. ✔️ 15+ systems as a full stack developer: powered by Node.js, Express, NestJS, PHP (Laravel), TypeScript, REST API protocols, GraphQL, Firebase, Supabase, Firestore, PostgreSQL, and MongoDB. ✔️ 40+ products engineered with a dedicated team mindset: utilizing clean Git version control, secure AWS cloud envicloud environments, Docker containers, and rigorous usability testing to publish app to App Store and Google Play smoothly. Looking for an elite Senior Mobile & Full Stack Developer who can build an app from scratch, create a mobile application with premium UX, or handle complex product development for long-term collaboration? Let's connect! Send an invite and let’s talk about your project goals. ☎️

  • Flutter
  • Smartphone
  • Firebase
  • Mobile App Development
  • Android App Development
  • iOS Development
  • Swift
  • API Integration
  • Kotlin
  • Android
  • JavaScript
  • iOS
  • React Native
  • Push Notifications
  • PostgreSQL
  • Location-Based Service
  • HTML
  • Web Development
  • AI App Development
  • API

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Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Flutter Developer proposals within 24 hours of posting a job description.