Filip Lisowski
Principal Performance Engineer at Companies House
Greater Cardiff Area United Kingdom
Summary
👤
Senior🎓
Top SchoolFilip Lisowski is a Principal Performance Engineer with 11 years’ experience building and testing web services at Companies House, progressing from web developer to lead test engineer and now performance lead. He combines hands-on back-end and front-end development of microservices and RESTful APIs with deep expertise in functional, non-functional and performance testing, plus infrastructure automation. That dual perspective lets him redesign processes, coach manual testers into automation engineers, and bridge gaps between dev and ops for more reliable, scalable systems. Based in Greater Cardiff, he relishes technical problem-solving and continuous skill improvement, often stepping into scrum test roles when projects demand. An unusually practical SDET-turned-leader, he brings both code-level fluency and test-strategy leadership to production performance challenges.
11 years of coding experience
11 years of employment as a software developer
Computer Science Computer Science, Computer Science Computer Science at Prifysgol Aberystwyth University
English, Polish, German
Github Skills (58)
python8
dotnet8
bdd8
cucumber8
mock-server8
java8
javascript8
testing8
selenium8
webdriver8
ruby7
browser7
testng7
load-testing7
api-testing7
Programming languages (4)
Github contributions (5)
flisowski/taf-poc
Nov 2019 - Jan 2020
Contributions:2 pushes, 2 branches in 1 month
companieshouse/api-enumerations
Feb 2015 - Sep 2017
Contributions:31 commits, 7 PRs, 26 pushes in 2 years 7 months
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