Aleksandr Efremenkov
Tallinn, Harju maakond, Estonia
Summary
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SeniorAleksandr 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 craftsmanshipâdesigning 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.
11 years of coding experience
Stackoverflow
151reputation
20kreached
3answers
5questions
Github Skills (150)
kotlin-language10
kotlin-library10
kotlin-extensions10
webextension10
ipc10
kotlin-android10
browser-extension10
storage10
java10
serialization10
disk10
android10
kotlin10
sharedpreferences10
safari9
Programming languages (13)
Github contributions (5)
iamironz/lightweight-fragments
Jan 2016 - Apr 2017
Contributions:59 commits, 55 pushes, 3 branches in 1 year 2 months
iamironz/unsafe
Aug 2016 - Mar 2019
Android unsafe wrapper around internal sun.misc.Unsafe api
Contributions:31 commits, 1 PR, 26 pushes in 2 years 7 months
android
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