Samvel K.

Mobile App Developer | Native Android & iOS | Flutter, React Native

I take over mobile apps and run them. My two largest Upwork clients kept me on for 3,800 and 1,100 hours straight; building, shipping, and maintaining iOS + Android so they never needed an in-house dev team. WHAT I ACTUALLY DO Most of my work isn't "build an app and disappear." It's owning the mobile side of a business: the roadmap, the releases, the store submissions, the 2 am production bug. Clients who don't have a CTO hire me to be the person who handles all of it. Longest engagements: 3,805 hours over 14 months (NFC iOS/Android platform), 1,109 hours over 8 months (event management app), 1,013 hours over 9 months, 597 hours over 13 months (Flutter). 23,000+ hours on Upwork, 100% Job Success, Top Rated Plus. Outside Upwork, I've run a software development agency for 6 years and maintain production apps including MTailor, Hamperapp, and MyTello; real apps in both stores with real users. HOW I WORK - Native Android: Kotlin, Jetpack Compose, Coroutines/Flow, MVVM & Clean Architecture, Room, Hilt - iOS & cross-platform: Swift, Flutter, React Native, TypeScript - Integrations: REST/GraphQL, Stripe and in-app purchases, NFC, low-level TCP socket protocols (thermal printers, hardware) - Release ownership: App Store and Play Console submission, review, phased rollout, crash monitoring - AI features when your product needs them: OpenAI/Claude APIs, RAG pipelines, custom LLM backends I take over existing codebases without a rewrite, and I inherit other people's technical debt for a living. Stability first: if your app is already earning money, my job is to not break it. If you need one person to own your mobile product instead of managing three contractors, message me and tell me what you're running today.