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.
12 years of coding experience
Oil College
Русский, English
Stackoverflow
51reputation
4kreached
5answers
1question
Github Skills (33)
intellij-idea8
iphone7
lombok7
android-library7
api7
gradle-kotlin-dsl6
intellij-platform6
keygenerator6
encryption6
intellij-plugin6
spring-boot6
authorization6
gradle6
kotlin6
java6
Programming languages (4)
Github contributions (5)
obimp/obimp4j-core
Jul 2013 - Jan 2023
Contributions:21 releases, 54 commits, 29 pushes in 9 years 7 months
obimp/obimp4j
Jun 2020 - May 2022
Java OBIMP (Open Binary Instant Messaging Protocol) implementation.
Contributions:2 PRs, 2 pushes, 2 branches in 1 year 11 months
messagingjavamessaging-protocolinstant-messaginginstant
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