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Serhey Averchenko

@serheyaverchenko

Senior Android Engineer at Insaat Site Systems who cut app size by 93% and ships native apps with Kotlin and Jetpack Compose.

Belarus

Message

At Insaat Site Systems, I cut the size of a suite of three B2B tablet apps by 93% by moving large assets and media to a remote server with managed downloads and caching. I also set up CI/CD and raised test coverage of core calculation logic to about 70%.

At Offsiteteam, I took over an NDA telemedicine tablet platform at about 30% completion and delivered it to commercial release, writing more than 70% of its production codebase. I also built an offline-first app for Swiss municipalities and developed WebRTC calling features.

In my independent Android work, I built Artopos, an offline-first Harvard Art Museum collection app, and created and published research on Jetpack Compose scrolling performance. I focus on native Android architecture, performance measurement, and production-ready apps.

Experience

Work history, roles, and key accomplishments

Senior Android Developer

Insaat Site Systems

Jul 2023 - May 2026 (2 years 10 months)

Developed a suite of B2B tablet apps for architects and technical inspectors, cutting app size by 93% and building CI/CD from scratch. Mentored a junior developer and improved code quality and test coverage.

Android Kotlin Jetpack Compose MVVM Data Binding GitHub Actions Detekt Junit MockK Robolectric LeakCanary Firebase Crashlytics

Android Developer

Offsite team

Feb 2019 - Jul 2023 (4 years 5 months)

Developed native Android apps for client projects including telemedicine, municipal services, and ticketing. Delivered a telemedicine platform to commercial release and architected an offline-first app for Swiss municipalities.

Android Kotlin Clean Architecture MVVM Coroutines Flow ROOM WebRTC OpenVidu SSL TLS ADB Vuforia AR

Android Developer

PharmBonus

Apr 2017 - Sep 2018 (1 year 5 months)

Decreased crash rate from 20+/day to less than 5/week by introducing Firebase Crashlytics monitoring and refactoring legacy code. Developed and shipped a second app to Google Play and migrated the app to a new REST API.

Android Firebase Crashlytics REST APIs Google Play

C# Developer

Svetopribor (BelTIZ)

Feb 2013 - Mar 2014 (1 year 1 month)

Developed internal desktop enterprise software using C# and designed relational database schemas. Optimized complex SQL queries in MS SQL Server.

C#MS SQL Server SQL Database Design

Education

Degrees, certifications, and relevant coursework

Belarusian State University of Informatics and Radioelectronics

Master of Science, Management of Safety of Production Processes

Master of Science in Management of Safety of Production Processes from Belarusian State University of Informatics and Radioelectronics, completed in 2018.