Professional Summary
Senior Android Developer with 9+ years of experience building high-performance mobile applications for 150M+ users across leading tech companies. Specialized in Kotlin, Jetpack Compose, and Kotlin Multiplatform with proven expertise in scalable architecture design, team leadership, and performance optimization. Successfully led technical migrations and mentored development teams while delivering applications that generated tens of millions of dollars in monthly revenue.
Key Achievements
150M+
Combined app downloads across major platforms
5M+
User base growth at X5 Digital (from 100K)
$20M+
Monthly transactions processed through BNPL system
99.8%
Crash-free sessions achieved through optimization
3x
Faster payment flow completion
60%
Reduction in page load times
Core Technical Skills
Languages
Architecture
Frameworks
DI & Async
Networking
Testing & CI/CD
Professional Experience
Senior Android Developer & Tech Lead
X5 Digital
February 2022 – Present
Led Android development for Food.ru application (5M+ downloads), managing team of 5 developers and driving technical excellence across all mobile initiatives.
Architected e-commerce marketplace from scratch, growing user base from 100K to 2M+ active users
Designed advanced search system with sophisticated filtering, improving search relevance by 85%
Optimized performance: improved crash-free sessions from 97.5% to 99.76%, increased FPS from 45 to 120
Reduced page load times by 60% through lazy loading and render optimization
Implemented multi-module Clean Architecture with custom composition-based ViewModel logic
Utilized Koin for dependency injection across multi-module architecture, ensuring clean and maintainable DI configuration
Eliminated circular dependencies, reducing build time by 25%
Mentored team of 4 developers and established technical standards
Technologies:
Kotlin • Jetpack Compose • MVVM • Clean Architecture • Coroutines • Flow • Koin • Retrofit • Room • Paging 3 • GitLab CI
Senior Android Developer
Yandex Market
January 2021 – January 2022
Developed payment and financial features for Yandex Market (50M+ downloads), one of the largest e-commerce platforms.
Architected BNPL system processing $20M+ monthly transaction volume
Improved payment success rate from 89% to 96.5% through robust error handling
Accelerated payment flow completion by 3x through API optimization
Led migration of 10% of Java codebase to Kotlin, reducing technical debt
Replaced RxJava with Kotlin Coroutines for improved maintainability
Achieved 100% unit test coverage for payment features
Mentored 2 middle developers through technical onboarding
Technologies:
Kotlin • Java • RxJava • Coroutines • Dagger 2 • Retrofit • JUnit • Mockito • Jenkins
Middle Android Developer
Wildberries
August 2020 – January 2021
Optimized features for Wildberries e-commerce app (100M+ downloads), focusing on performance improvements.
Reduced rendering time by 30% on main page and search results using Epoxy library
Implemented complex dynamic UI components for product catalogs
Ensured stability under high user loads through performance profiling
Collaborated with cross-functional teams on product goals
Technologies:
Kotlin • Coroutines • Epoxy • Moxy (MVP) • Dagger 2 • Cicerone • WorkManager
Junior/Middle Android Developer
Lenremont
March 2017 – August 2020 | Saint Petersburg
Sole Android developer responsible for complete application rewrite and backend maintenance.
Rebuilt entire app from legacy Java to modern Kotlin with Jetpack components
Improved crash-free rate from 96% to 99.8% over 18-month rewrite
Designed real-time planner-calendar with Firebase Cloud Firestore synchronization
Maintained server-side Java application and optimized SQL queries
Solved device compatibility issues across multiple manufacturers
Technologies:
Kotlin • Java • Jetpack • WorkManager • Room • LiveData • Firebase • Retrofit • SQL
Education & Certifications
Master of Science in Infocommunication Technologies
Saint Petersburg National Research University of IT, Mechanics and Optics (ITMO)
2017
Bachelor of Science in Infocommunication Technologies
ITMO University
2015
Programming Specialist Certificate
Computer Technology Training Center
2011 • C#, Delphi, SQL Server, JavaScript, COM Technologies
Yandex School of Mobile Development
2015
Personal Projects
Cross-Platform Mobile RPG Idle Game
In Development (Alpha Stage)
Developing cross-platform RPG using Kotlin Multiplatform and Compose Multiplatform
Building shared business logic for iOS and Android clients
Implementing backend server infrastructure using Kotlin