Open to opportunities

dima barannik

@dimabarannik

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I build scalable Android apps, streaming platforms, and real-time IoT products.

Ukraine

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I've built and published production-grade Android applications on Google Play, including People Notes, Resistance, Tic-Tac-Toe 3 Player, and Epic Clicker. I own the full lifecycle from requirements and Jetpack Compose UI to Firebase infrastructure, monetization, real-time sync, and testing.

At MEGOGO, I contributed to high-load video streaming applications for millions of active users across mobile and Android TV. I migrated XML views to Jetpack Compose and worked on ExoPlayer, Leanback, DRM delivery, deep linking, and asynchronous test coverage.

At CHI Software, I led client-side architecture for Smart Home and IoT platforms across mobile devices, panels, and tablets. I integrated C++ ALPR OCR through JNI/NDK, built low-latency Wi-Fi Direct, WebSocket, and REST communications, and mentored engineers while reducing regression defects by 30%.

I'm a Ph.D. researcher in secure data transmission and network protocols, and I use Kotlin, Java, C++, Firebase, AWS, and AI-assisted development workflows to deliver reliable mobile systems.

Experience

Work history, roles, and key accomplishments

Current

Independent Mobile Software Engineer

Current

Self-Employed

Nov 2025 - Present (9 months)

Architected, developed, and published production-grade mobile applications on Google Play end-to-end, managing entire system lifecycles from requirement definition to cloud infrastructure. Designed robust, responsive, and declarative UI/UX using Jetpack Compose and Material 3, adhering strictly to Clean Architecture and MVVM patterns.

Kotlin Java Android SDK Jetpack Compose Clean Architecture MVVM Firebase Firestore Cloud Functions Google Play Games Services WorkManager AI Tooling Unit Testing Performance Profiling

Android Software Engineer

MEGOGO

Mar 2025 - Nov 2025 (8 months)

Contributed to high-load video streaming applications serving millions of active users across mobile and Android TV platforms. Migrated legacy XML-based views to declarative Jetpack Compose components, cutting UI rendering overhead and enhancing maintainability.

Kotlin Jetpack Compose ExoPlayer Lean Back Deep Linking Junit Mockito Android TV

Android Software Engineer / Tech Lead

CHI Software

Sep 2020 - Mar 2025 (4 years 6 months)

Led client-side architecture and development for enterprise Smart Home and IoT management platforms running on mobile devices, dedicated panels, and tablets. Integrated native C++ ALPR (License Plate Recognition) OCR libraries via JNI/NDK, optimizing memory allocation and image buffer processing for real-time video frames.

Kotlin Java C++NDK WebSockets REST IoT Smart Home CameraX Google Maps ROOM Architecture Reviews

Android / Flutter Developer

Nitrix Studio

Aug 2018 - Aug 2020 (2 years)

Developed multiplatform and native mobile solutions utilizing Kotlin, Java, and Flutter (Dart). Built clean client-server communication layers with Retrofit, Room DB, RxJava, and Dagger 2.

Kotlin Java Flutter Dart Retrofit ROOM RxJava Dagger 2 In App Purchases Analytics Crash Reporting

Junior Android Developer

IT Company

Sep 2017 - Jun 2018 (9 months)

Developed native Android features with Java and standard Android SDK components. Implemented UI layouts according to Material Design specifications, authored unit tests, and resolved defect backlogs.

Java Android SDK Material Design Unit Testing

Education

Degrees, certifications, and relevant coursework

Kharkiv National University of Radioelectronics

Doctor of Philosophy, Electronic Communications and Radio Engineering

2020 - 2025

Ph.D. in Electronic Communications and Radio Engineering. Dissertation defended in Feb 2025 on steganographic transformations, data compression, and secure video transmission.