Ignat Simonenko
Lead Java Developer at DataArt
Lower Silesian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolIgnat Simonenko is a Lead Java Developer with 9 years of experience delivering data-driven, scalable back-end systems and leading cross-functional teams across Europe and remote engagements. He combines hands-on expertise in Java and microservice architecture with demonstrated leadership—driving on-time delivery, improving team efficiency by up to 30%, and mentoring engineers into promotions. His background includes optimizing data pipelines and processing for analytics (cutting times by 50%) and introducing architectural changes that boosted capacity and feature integration speed. A pragmatic engineer who values quality, he has contributed to the popular Kotest open-source testing framework by extending matchers and improving test utilities, highlighting a strong focus on testability and automation. Now based in Lower Silesia, Poland, he balances delivery leadership with active technical contribution, often stepping into solution architecture and hiring to strengthen teams. Collected experience across consultancies and product teams gives him a track record of turning complex requirements into reliable, maintainable systems.
8 years of coding experience
7 years of employment as a software developer
Bachelor's degree System Analysis, Bachelor's degree System Analysis at National Aerospace University -'Kharkiv Aviation Institute'
Polish, Ukrainian, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (5)
kotlin10
assertion10
matcher10
testing10
property-testing4
Programming languages (5)
Github contributions (5)
kotest/kotest
Jan 2020 - Feb 2020
Powerful, elegant and flexible test framework for Kotlin with assertions, property testing and data driven tests.
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:6 reviews, 6 commits, 4 PRs in 1 month
Contributions summary:Ignat primarily contributed to the Kotest framework by adding and modifying test matchers. Their work involved creating matchers for the konform library and extending existing matchers with new functionality such as `shouldBeSingleton` and `shouldHaveSingleElement` with predicate. This included refactoring and correcting signatures for improved testing capabilities. The contributions showcase a focus on improving the testing utilities within the Kotest framework.
data-drivendata-driven-testingassertionsdriven-testingproperty-testing
simonenkoi/junit5-demo
Aug 2018 - Jul 2020
Contributions:7 PRs, 15 pushes, 4 branches in 1 year 11 months
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