Open to opportunities

Mikk Hordienko

@mykhailohordiienko

I'm a React Native developer with 5+ years of production experience and I'm available immediately for freelance, contract or part-time work.

Ukraine

Message

I've built and maintained production iOS and Android applications at Simpl Techs since 2019, delivering scalable React Native architecture and reusable components.

I integrate Firebase Authentication, FCM, Analytics, REST APIs, push notifications, and deep linking, while optimizing mobile performance. I also automate builds and releases with Fastlane and App Center, and publish apps to the App Store and Google Play.

Through Upwork, I've partnered with long-term international clients for over 4,500 hours, earning a 100% Job Success Score.

My project experience includes Vibespot, TruInk, and NowAt, with end-to-end ownership of production-ready mobile features.

Experience

Work history, roles, and key accomplishments

Current

React Native Developer

Current

Simpl Techs

Nov 2019 - Present (6 years 9 months)

Developed and maintained production mobile apps for iOS and Android, built reusable architecture and scalable components, integrated Firebase Authentication, FCM, Analytics and REST APIs, automated builds and releases using Fastlane and App Center, and published applications in App Store and Google Play.

React Native Redux Firebase REST APIs Fastlane CodePush Git CI CD Push Notifications Deep Linking Mobile Architecture Performance Optimization

React Native Developer

Upwork

Aug 2020 - Apr 2025 (4 years 8 months)

Worked as a freelance React Native developer on Upwork, achieving 100% Job Success Score, completing over 4,500 hours, earning $60K+, and maintaining long-term international clients.