Alexander Zakharenko

I'm a Senior QA Engineer at JetBrains, responsible for quality of Kotlin/Native compiler. I have over 10 years of experience as a backend QA engineer — implemented automated testing for different services, different protocols and improved testing infrastructure.

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How does it feel to test a compiler?

I’m often asked by friends and colleagues what it’s like to test a compiler, so I decided to write an article about it.

Aug 08 5,6K

Alexander Zakharenko

Kotlin

Testing

Retweet on Twitter Foojay.io Retweeted

So happy to see @OpenJDK uses #SonarCloud to guarantee High #CodeQuality for @java #Java25 @SonarSource

https://bugs.openjdk.org/browse/JDK-8357798

04:11 PM · February 16, 2026

Retweet on Twitter Foojay.io Retweeted

The hottest #Java unconference in the world is coming back 27-31 July 2026 (starting evening of 26th). Deep discussions about Java and life. We are making some seats available using a lottery system. Draw will be on Friday the 20th Feb. Sign up here: https://www.jcrete.org/lottery

08:45 PM · February 09, 2026

Retweet on Twitter Foojay.io Retweeted

Confession: I usually lose the Flow switching between Quality Gates and Code 📉😅

But I connected @claudeai + #SonarQube via #MCP

Verify & Fix vulnerabilities without touching the mouse.
Zero context switching. Pure flow. 🚀

https://foojay.io/today/claude-code-sonarqube-mcp/

#Java #AI @foojayio

03:56 PM · February 02, 2026