Sergey Chistyakov Email & Phone Number

Belgrade, Serbia

• Key achievements:
• Reduced application startup time by 20% by correctly configuring R8, integrating Baseline Profiles and deferred dependency initialization.
• Developed a push notification SDK from scratch that works with multiple push notification services and has a convenient API, which led to a reduction in the integration time of push notification functionality into.
• Optimized and improved the video player component (based on ExoPlayer) by… Show more Key achievements:
• Optimized and improved the video player component (based on ExoPlayer) by implementing mechanisms for preloading, caching, and selecting video quality based on network characteristics, resulting in a 25% reduction in.
• Participated in the process of splitting the application into Gradle modules, which led to a 30% reduction in the build speed of the application.

Moscow, Russia

• Key achievements:
• Reduced time to market by 20% for new applications by moving core functionality to a separate SDK.
• Developed an authorization SDK from scratch, reducing the integration time of authorization functionality into applications to several hours.
• Refactored about a third of the most important functionality from Java to Kotlin to update the technical stack of the project.

Москва, Россия

• Key achievements:
• Refactored the functionality for working with push notifications, increasing the delivery rate by 15%.
• Integrated the video conferencing SDK into the client application.
• Developed functionality for caching chats history.