Aleksandr Efremenkov
Senior Android Engineer at Bolt
Tallinn, Harju County, Estonia
Summary
👤
Senior🎓
Top SchoolAleksandr Efremenkov is a Senior Android Engineer with over a decade of experience building and hardening mobile platforms, currently focusing on CI/CD, core infrastructure, and mobile security at Bolt. A Google Developer Expert in Android, he has led low-level system work and security tooling at companies like Yandex and Alibaba, and maintains hands-on expertise across Java, Kotlin, JNI, and microservice back-ends. He combines product-facing feature delivery with deep platform and tooling craftsmanship—designing build pipelines, bytecode tooling, and protection mechanisms that keep large-scale apps reliable and secure. Outside of corporate roles he iterates on pet projects spanning Spring, Netty, Docker and TeamCity, and co-hosted the AndroidDev podcast, reflecting a long-term commitment to community and continuous learning.
10 years of coding experience
8 years of employment as a software developer
Smolensk Polytechnic College
Русский, English, Russian, Ukrainian, Estonian
Stackoverflow
151reputation
20kreached
3answers
5questions
Github Skills (192)
webextension10
safari10
ipc10
data-storage10
firefox10
byte10
browser-extension10
storage10
serialization10
gson10
disk10
android10
sharedpreferences10
preference10
chrome10
Programming languages (12)
Github contributions (5)
iamironz/lightweight-fragments
Jan 2016 - Apr 2017
Contributions:59 commits, 55 pushes, 3 branches in 1 year 2 months
yandextaxitech/binaryprefs
Dec 2016 - Jun 2020
Rapidly fast and lightweight re-implementation of SharedPreferences which stores each preference in files separately, performs disk operations via NIO with memory mapped byte buffers and works IPC (between processes). Written from scratch.
Contributions:2 releases, 1006 commits, 62 PRs in 3 years 6 months
memoryre-implementationdata-storagebuffersnio
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