Oleksandr Martyniuk

I’d love to help bring your ideas to life, from early-stage concepts to full-scale app solutions. Feel free to reach out!

As an experienced Android Developer, I have a strong background in working on commercial projects, which has enabled me to refine my skills and demonstrate my capabilities. Alongside my practical experience, I have developed numerous publicly available projects on GitHub, showcasing my expertise in this field. Furthermore, I have successfully published an app on the Play Store, serving as a testament to my proficiency as an accomplished Android Developer.

Android Tech-Stack:

Android studio

Java / Kotlin

Kotlin multiplatform

MVVM-MVI / Clean

Android SDK

Complex animations & responsive UI

Coroutines

Twilio / Agora / Element

Google Play Services

Hilt / Koin / Dagger 2 / Kodein

Glide

Picasso

Room

JSON, REST API

Push notifications

Git (Github / Gitlab / Bitbucket)

Firebase

Bluetooth / IoT Mobile Apps

Geolocation & Maps

Key Expertise:

• Audio/Video Calls: WebRTC integration for real-time communication.

• In-App Purchases and Google Play Billing.

• Geolocation and Firebase Services (e.g., FCM, Crashlytics, Analytics).

• Media Processing: Photo, video, and audio.

• Platform Migration: Converting iOS/web apps to Android.

📅 Last updated: April 02, 2026