Janusz Wisniowski
Software Engineer at Shift4
Wroclaw Metropolitan Area Poland
Summary
👤
Senior🎓
Top SchoolJanusz Wisniowski is a seasoned software engineer with over a decade of experience designing and delivering scalable distributed systems, currently building solutions at Shift4 from Wroclaw. He champions defaults, standards and best practices, preferring proven approaches over reinventing the wheel, and values broad computer science skills more than deep specialization in a single stack. Janusz has a proven track record across fintech, large-scale consumer services and enterprise projects—contributing to systems used by millions and helping teams meet regulatory requirements like MIFID2. He is a hands-on architect and mentor who enjoys lifting junior engineers and shaping technical teams to deliver high-quality code and robust architectures. Comfortable working in globally distributed teams, he combines backend expertise (Java/Spring, Scala, Spark) with front-end and integration experience (AngularJS, React, Node). He is explicit about fit—no .NET offers or relocation—but brings deep experience in end-to-end platforms, payment integrations and mission-critical banking and telecom projects.
10 years of coding experience
15 years of employment as a software developer
Master of Engineering, Information Systems and Management, Master of Engineering, Information Systems and Management at Wroclaw University of Science and Technology
Stackoverflow
5,040reputation
381kreached
133answers
2questions
java
top-5%
Github Skills (93)
testing10
spring-security10
junit10
docker-container10
eclipse10
integration-testing10
docker-compose10
selenium-webdriver10
groovy10
java10
spring-boot10
gradle10
kotlin10
bootstrap10
spring10
Programming languages (7)
Github contributions (5)
fingo/xactus
Mar 2021 - Jul 2022
Xactus is FINGO's open-source XPath 2.0 processing library based on Eclipse's XPath 2.0 implementation from the Eclipse Web Tools Platform Project.
Contributions:124 commits, 79 PRs, 197 pushes in 1 year 4 months
xpath2xmlxpathprocessing-libraryeclipse
jannis-baratheon/Docker-container-synchronization-example
Apr 2017 - Sep 2018
Contributions:7 commits, 10 pushes, 1 branch in 1 year 5 months
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