Shihab K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I build mobile apps for iOS and Android and get them live on the App Store and Google Play, including the review process, which I handle end to end without you chasing me for updates. Over the past four years I've delivered apps for startups and businesses across the UK, Europe and the Middle East, plus in-house work as a mobile engineer for product teams. Recent highlights: - Built a business analytics app with interactive charts and dashboards, and order management for a point-of-sale system used by merchants - Cut a client's AWS bill by 36% by right-sizing infrastructure and clearing out unused resources - Shipped apps with Stripe payments, live geolocation and maps, push notifications, and AI features built on the OpenAI and Claude APIs What I can do for you: Full app builds, from an idea or Figma file to a released app Backends and APIs, whether serverless or a custom service App Store and Play Store releases, including rejected-review fixes CI/CD setup so your builds and releases run automatically instead of eating a day each time. I wrote and maintain an open-source tool that automates exactly this for mobile teams Rescue work on existing apps: bugs, crashes, performance, or a codebase a previous developer left behind Tech: Languages: Dart, Go, JavaScript, SQL, with working knowledge of Kotlin and Swift Frameworks and platforms: Flutter for iOS, Android and web, Node.js, native platform integrations Cloud: AWS (EC2, Route 53, Amplify, ElastiCache, IAM, cost optimization), Google Cloud (Cloud Functions, Pub/Sub, Maps Platform, IAM), Firebase (Auth, Firestore, Cloud Functions, push notifications, Analytics, Crashlytics), Supabase Databases: PostgreSQL, MySQL, SQLite, Firestore Integrations: REST and GraphQL APIs, Stripe and other payment gateways, Google Maps, OpenAI and Claude APIs Quality and delivery: unit, widget and integration testing, GitHub Actions, GitLab CI, Fastlane, App Store Connect, Google Play Console Architecture: clean architecture, MVVM, MVC, Git with GitHub, GitLab and Azure DevOps