Alexander Krysin
Software Engineer
Russia
Summary
👤
Senior🎓
Top SchoolAlexander Krysin is a seasoned Java and Kotlin software engineer with 12 years of hands-on experience building backend services, desktop control panels, and Android apps from PoC to Google Play publication. He has delivered integrations across IM, CRM, social networking, and online banking, and authored server-side logic for video surveillance and restaurant systems while routinely diagnosing crashes, concurrency bugs, memory leaks, and performance bottlenecks. Comfortable across the stack, he pairs Spring, JPA/Hibernate, and multithreading expertise with Android Jetpack, Compose, and DI frameworks, plus practical Linux deployment and CI experience using Docker and Kubernetes. His toolset spans SQL and NoSQL databases, messaging platforms like Kafka and RabbitMQ, and testing with JUnit/Mockito, enabling reliable, production-ready systems. Notably, he combines deep low-level Java/I/O knowledge with modern coroutine-driven Kotlin patterns—helping teams migrate legacy logic toward more resilient, concurrent architectures. Based in Russia, he brings pragmatic problem-solving from embedded-style desktop clients to scalable cloud-deployed services.
13 years of coding experience
Economics & Accounting, Accountant, Economics & Accounting, Accountant at Oil College
Русский, English
Stackoverflow
51reputation
4kreached
5answers
1question
Github Skills (20)
intellij-idea8
lombok7
authorization7
android-library7
gradle-kotlin-dsl6
keygenerator6
encryption6
iphone6
spring-boot6
gradle6
java6
android-gradle-plugin6
sip4
chat4
voip3
Programming languages (4)
Github contributions (5)
obimp/obimp4j-client
Oct 2022 - Dec 2025
Contributions:7 releases, 15 pushes, 3 branches in 3 years 3 months
obimp/obimp4j-core
Jul 2013 - Jan 2023
Contributions:23 releases, 54 commits, 30 pushes in 9 years 7 months
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