Open to work · remote · GMT+7

Ruslan Barysiuk Senior Flutter
Developer

I take iOS and Android apps from estimates and a roadmap to release on the App Store and Google Play.

Message on Telegram
Download resume PDFEN, light
ProveUp: avatar gear
Document scanner: camera with scan modes
Healthy4u: weekly health trends
Healthy4u: subscription paywall
ProveUp: coach screen
Healthy4u: AI assistant home screen
ProveUp: home screen with the player avatar
Ruslan Barysiuk

  • 5 years

    of commercial development

  • 6 apps

    in the App Store and Google Play

  • 1.5 months

    from audit to release of a stalled project

  • 1,014

    GitHub contributions in the last year

Apps

Flutter apps that feel native: subscriptions, health data from watches, real-time video, computer vision.

Healthy4u

AI health assistant

June 2025 – September 2026Rewrote it from Swift to Flutter · sole mobile developer for 15 months

Health data from watches: HealthKit (40+ types), Health Connect and a watchOS prototype in SwiftUI. Native subscriptions with StoreKit 2 and Google Play Billing, validated on the server together with the backend developer.

Healthy4u: Apple Health data sync
Healthy4u: the AI chat logs meals
Healthy4u: daily nutrition progress
Healthy4u: assistant voice settings

ProveUp

Fitness battles and freestyle football

May – September 2026, contract

Computer vision counts reps right from the camera; real-time video on LiveKit and WebRTC.

  • TestFlight build
ProveUp: battle arena
ProveUp: player ranking
ProveUp: the camera detects the exercise

Document Scanner & PDF Editor

September – October 2026, contract

Joined a stalled project and took it from audit to release in 1.5 months. Native camera SDKs, on-device ML and OCR with ONNX Runtime and OpenCV. Subscriptions on RevenueCat.

Scanner: PIN-protected folder
Scanner: profile and PRO subscription
Scanner: camera with scan modes

What I bring

Flutter development with native iOS and Android integrations: from an MVP and a code audit to store release and support.

  • Cross-platform apps in Flutter

    iOS and Android apps from a single Dart codebase: Clean Architecture, BLoC and Riverpod, and flavors that build several apps from the same code.

    • Flutter 3
    • Dart 3
    • BLoC
    • Riverpod
    • Clean Architecture

  • Native iOS and Android

    Swift, SwiftUI and Kotlin where Flutter is not enough: platform channels, native SDKs, a watchOS prototype, Android 13/14 permissions.

    • Swift
    • SwiftUI
    • Kotlin
    • Platform Channels

  • Subscriptions and in-app purchases

    StoreKit 2 and Google Play Billing with server-side validation, RevenueCat, paywalls and purchase restore. I get apps through App Store review.

    • StoreKit 2
    • Google Play Billing
    • RevenueCat

  • Health data and wearables

    HealthKit (40+ types) and Health Connect: data from watches and phones, sync, and Google Play review rules for health data.

    • HealthKit
    • Health Connect
    • watchOS

  • Video calls and AI features

    Video calls on WebRTC and LiveKit, streaming LLM responses over SSE and reading them aloud with text-to-speech.

    • WebRTC
    • LiveKit
    • LLM
    • SSE

  • Camera, computer vision and OCR

    Native camera SDKs, document scanning, rep counting from the camera. On-device ML and OCR with no custom backend: ONNX Runtime, OpenCV, Tesseract.

    • ONNX Runtime
    • OpenCV
    • Tesseract OCR

  • Code audits and project rescue

    I dig into inherited code, document the architecture and ship stalled projects: one went from audit to release in 1.5 months.

    • CI/CD
    • Fastlane
    • TestFlight
    • Jira / Linear

  • AI-native development

    Claude Code and Cursor every day for 1.5 years: agent pipelines with an agent reviewer, Figma MCP. Used Dart MCP to remove 2,000+ unnecessary widget rebuilds.

    • Claude Code
    • Cursor
    • MCP

Available for hire: Senior Flutter Developer, Mobile Developer (Flutter) or Flutter Lead · full-time, part-time or contract · remote, GMT+7

Message on Telegram

Resume

Six A4 pages in English, Russian, Ukrainian and Belarusian, light and dark. The link and the PDF follow your choice.

Language
Theme
Download PDFEN, light
All files: PDF and DOCX

PDF, 6 pages

For ATS: single column, DOCX

Page 1 of 6OverviewOpen page
Page 2 of 6ExperienceOpen page
Page 3 of 6Healthy4uOpen page
Page 4 of 6ProveUp and scannerOpen page
Page 5 of 6Projects 2022–2025Open page
Page 6 of 6Tech stackOpen page
Download PDFEN, light

GitHub activity

Each square is one day of the last 12 months. The darker, the more contributions.

1,014contributions in the last year

  • 215 active days
  • On GitHub since 2020
github.com/munem91

Contact

Telegram works best. Remote from Bangkok (GMT+7), full-time or part-time billed hourly.

Telegram @art_munem
  • English B1, classes three times a week
  • Recommendation letter from a previous employer on request
  • AI agents in daily work for 1.5 years: Claude Code, Cursor