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Senior Android Developer - 10+ years

Denis Rodionov

Mobile & Game Developer

I build scalable, testable mobile applications and game-oriented products with modern engineering practices, clear architecture, and production reliability.

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About

I am a Senior Android Developer with 10+ years of experience creating high-quality mobile products. My core focus is scalable architecture, robust testing strategy, and long-term maintainability.

I actively use AI agents in daily development and run practical research on high-quality code generation workflows. I work with Cursor IDE and OpenAI Codex to improve engineering velocity while keeping output quality and reliability under control.

AI Agents & Developer Productivity

  • System prompt design and behavior tuning
  • Rules setup and context control
  • MCP tools integration and usage patterns
  • Usage cost analysis and optimization
  • Output quality and reliability evaluation
  • Successful AI tooling adoption inside team and company

Tech Stack

Kotlin / Java Coroutines KMP with Native UI Android XML Jetpack Compose MVVM + MVI Jetpack Components Clean Architecture Multi-module Projects Filament 3D / SceneView Unit / Integration / Screenshot Tests GitHub Actions Cursor IDE Copilot Gemini Code Assist Codex Claude Code

Experience Highlights

Modern Mobile Development

Building scalable and testable applications on modern stacks.

B2B and B2C Products

Hands-on delivery experience across business and consumer domains.

Architecture and Team Building

Feature delivery, team hiring support, architecture design, and UI Core components.

Legacy to Modern Migration

Refactoring large systems and leading successful migration away from legacy stacks.

Professional Journey

I started in outsourcing, then moved to corporate development, and have worked remotely for 7+ years. My background includes B2B, B2C, and internal corporate apps in both developer and tech lead roles.

Beyond development, I explore crypto technologies, write Kotlin/Python/TypeScript scripts, and build Telegram bots.