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Serhii Stashevskyi Recommendations
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Senior Android Developer [open contact info](look above in the "contact info" section)

I'm a Senior Android Developer with expertise in building complex mobile applications, including cryptocurrency wallets,
AI-powered products, and large-scale super apps.



I focus on modern Android development, modular architecture, maintainable and testable code, and building reliable
applications that can scale as products grow.



Throughout my experience, I've built Android applications from scratch to publication on Google Play, taking ownership of
architecture, feature development, third-party integrations, and release management.



I've also worked closely with other mobile developers, sharing technical knowledge, reviewing solutions, and mentoring
teammates.

Experience

altRecipe Senior Android Developer
Dec 2020 – Oct 2026 Develop Android applications, building complex features, real-time
communication, cryptocurrency wallet functionality, DeFi features, and third-
party integrations.

BitFreezer Junior → Middle Android Developer
Jun 2018 – Dec 2020 Implemented cryptocurrency wallet functionality, encryption, secure key
management, and file system operations, ensuring security.

Skills Languages
Kotlin · Java
English (Intermediate)
Ukrainian (Native)
Technologies

Jetpack Compose · Android SDK · Coroutines · Flow · Navigation · Hilt ·
Retrofit · OkHttp · Kotlin Serialization

Architecture & Networking
Clean Architecture · MVVM · MVI · Modular Architecture · REST APIs ·
GraphQL · JSON-RPC · WebSockets

Data & Storage
Room · SQLite · Realm · DataStore · SharedPreferences · File System

Security & Cryptography
Android Keystore · AES Encryption · Diffie-Hellman

Tools & Platforms
Git · GitLab · Android Studio · Gradle · Google Play Console · Firebase ·
Postman · Figma · ClickUp · CI/CD