Michał Bareja
Engineering Manager at XTB
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMichał Bareja is an engineering manager and full-stack software craftsman with 12+ years of experience building scalable, production systems from MMO backends to high-traffic e-commerce delivery platforms. He combines deep Java/Spring backend expertise with modern front-end and Node.js skills, and has led teams of teams while shaping architecture and delivery processes at companies like Allegro and XTB. A Certified Scrum Master and experienced XP/TDD trainer, he regularly teaches Agile, TDD and Specification by Example, and maintains an open-source testing library (JUnitParams). He excels at raising engineering quality and customer-focused design in small, skilled teams as well as in large organizations, introducing practices like Event Storming across domains. Notably, his background includes cloud automation and configuration management at NSN and hands-on experience with a wide array of datastores (Oracle, PostgreSQL, MongoDB, Cassandra, Elasticsearch). He’s as comfortable mentoring leaders and improving hiring processes as he is diving into code to ship robust microservices.
12 years of coding experience
14 years of employment as a software developer
Warsaw University of Technology
Polish, English, Russian
Github Skills (14)
facebook9
testing9
junit9
setter8
java7
javascript7
assertj6
intellij-plugin5
intellij5
typescript4
angular3
css1
jquery1
angularjs1
Programming languages (5)
Github contributions (5)
jrmichael/intellij-fluent-setter
Jul 2013 - Jan 2016
Contributions:7 commits, 1 push in 2 years 6 months
settergenerator-pluginintellij-pluginfluentintellij
Pragmatists/tdd-angular-directives
May 2016 - Jan 2018
Contributions:2 pushes in 1 year 8 months
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