Maksymilian Babarowski
Senior Engineer at Klarna
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMaksymilian Babarowski is a Senior Engineer based in Warsaw with nine years of experience building backend systems in Java and Spring across fintech and industrial domains. He has progressed from IT support and full‑stack roles to senior engineering at Klarna, bringing hands‑on expertise in Kafka, Hibernate, Elasticsearch, Docker and AWS. A pragmatic tester and quality advocate, he contributes to the popular moto library—improving DynamoDB and Cognito-IDP mocking and hardening exception handling with added test coverage. Comfortable operating across the stack, he pairs production-grade API and data-store work with practical DevOps skills and a taste for lightweight, efficient tooling (and Arch Linux). Known for methodical bug fixes and validation-first features, he focuses on reliability and maintainability in distributed systems.
9 years of coding experience
4 years of employment as a software developer
Inżynier (Inż.) Informatyka, Inżynier (Inż.) Informatyka at Europejska Wyższa Szkoła Informatyczno-Ekonomiczna w Warszawie
Stackoverflow
672reputation
32kreached
18answers
6questions
Github Skills (19)
boto10
pytest10
python10
testing10
amazon-dynamodb10
dynamodb10
aws10
exception-handling9
apidoc8
api8
shell6
mockmvc6
spring-boot6
spring-security6
linux6
Programming languages (9)
Github contributions (5)
getmoto/moto
Oct 2021 - Oct 2021
A library that allows you to easily mock out tests based on AWS infrastructure.
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:12 commits, 2 comments, 3 issues in 20 days
Contributions summary:Maksymilian primarily contributed to improving the Moto library, focusing on the DynamoDB and Cognito-IDP services. Their work involved implementing features such as format validation for Cognito-IDP, and fixing bugs related to exception handling within the DynamoDB service, specifically ResourceNotFoundException in batch operations. They also added test cases for implemented functionalities to enhance the reliability and quality of the library.
ec2bototestinginfrastructureaws-infrastructure
k0mmsussert0d/fukaeri
Nov 2021 - Mar 2022
Contributions:49 commits, 2 pushes, 1 branch in 4 months
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