Jacek Centkowski - Senior Software Engineer II at SoftwareMill

Jacek Centkowski

Senior Software Engineer II at SoftwareMill

Szczecin, West Pomeranian Voivodeship, Poland

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Summary

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Rockstar

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Top School

Jacek Centkowski is a Senior Software Engineer II with 12+ years of experience building and architecting high-availability backend systems across fintech, streaming, and MedTech domains. He blends hands-on implementation with architecture and project leadership, having led a financial engine and invoicing workflows using Scala, Cats Effect and AWS while also maintaining large ML pipelines on Kubernetes/GCP. Comfortable with both legacy enterprise stacks and modern “X as code” CI/CD practices, he routinely steps into on-call rotations and cross-timezone collaboration to ensure production reliability. An active contributor and approver in the widely used Gerrit Code Review project, he brings deep backend insight from shipping features that improve stability and quota enforcement. Pragmatic about technical debt, he favors reactive and functional approaches to scale intensive data workloads and often rolls up his sleeves to implement the solutions he architects.

12 years of coding experience

23 years of employment as a software developer

JAVA J2EE Design Patterns, JAVA J2EE Design Patterns at ALTKOM AKADEMIA S.A.

Agile Project Management, Agile Project Management at Motorola Polska Electronics

FCE + LCCI lvl 3, English Language, FCE + LCCI lvl 3, English Language at British Council

Internal Auditor, Quality Management, Internal Auditor, Quality Management at EKEY

Master, Software Engineering, Master, Software Engineering at West Pomeranian University of Technology in Szczecin

Foundation of ERDAS - Leica Geosystems' Geographic Imaging product, Foundation of ERDAS - Leica Geosystems' Geographic Imaging product at Leica Geosystems GIS & Mapping

Github Skills (11)

javas10

jvm10

back-end-development10

gerrit10

guice10

testng10

java10

code-review10

testing10

sql8

junit5

Programming languages (6)

TypeScriptJavaShellScalaHTMLPython

Github contributions (5)

GerritCodeReview/gerrit

May 2019 - Aug 2022

Gerrit Code Review - (mirror of https://gerrit.googlesource.com/gerrit)

Role in this project:

Back-end Developer

Contributions:48 commits in 3 years 4 months

Contributions summary:Jacek primarily contributed to the back-end functionality of the Gerrit Code Review system. Their commits involved adding features related to cleaning up reviewed flags when changes are removed, merging updates, introducing repository size quota enforcement, extending quota backend functionalities, and removing account patch review data when a change is auto-abandoned. These changes demonstrate a focus on improving system stability, implementing new features, and enhancing the overall functionality and performance of the Gerrit platform.

reviewgerrit

testng-team/testng

Nov 2020 - Nov 2020

TestNG testing framework

Role in this project:

Back-end Developer & QA Engineer/Test Automation Engineer

Contributions:3 reviews, 7 commits, 1 PR in 4 days

Contributions summary:Jacek contributed to the TestNG testing framework by implementing new tests for Guice module configurations, ensuring that modules are instantiated correctly and configure methods are called only once. They also refactored existing tests, and added functionality to correctly create parent-child injectors in specific scenarios. These changes involved modifying core testing classes and interfaces, demonstrating a focus on enhancing test coverage and functionality within the framework. Furthermore, the user addressed bugs related to Guice module configurations to ensure proper test execution.

test-automationtesting-frameworktestingjvmtestng

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