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About Quality Blog.

quality blog is a place where we share practical knowledge about QA, software testing and quality assurance, artificial intelligence, smart home and automation. The name is not an accident - quality is our day job; AI and Home Assistant came later. No marketing fluff, no paywalls - just useful content.

Topics

  • QA & Testing

    quality assurance, test strategy, QA maturity, the Holak Scale, test automation, quality in banking

  • AI

    prompt engineering, Claude Code, local LLMs, MCP, practical use in QA and engineering

  • Smart Home

    Home Assistant, Zigbee, automations, IoT

  • Automation

    from tests and QA processes to home and desk work

Who's behind this

The blog is run by Quality Cat - a company co-founded by Julia Sielska and Grzegorz Holak on the belief that good knowledge should be accessible to everyone. The team are testers and QA engineers from banks, corporates and software houses - hence the "Quality" in the name. QA and testing are our starting point: we write about how not to break products, how to build mature testing processes, and how to use AI, automation and good habits from smart home to raise quality every day.

Manifesto

No paywalls. No clickbait. No "10 reasons why…". Just solid knowledge, written like a human.

Authors

Julia Sielska

Quality Cat co-founder · ABB Polska

Co-founder of Quality Cat. Works day-to-day with ERP systems at ABB Polska, where business-process quality assurance meets integration testing. Also tests Grzegorz's wildest ideas at home - treating smart home like just another environment under acceptance test.

Grzegorz Holak

QA Architect @ SCIB · Senior TDE @ Sii Polska

QA Architect at Santander Corporate & Investment Banking and Senior TDE at Sii Polska. Designs test strategies, QA maturity models and the overall approach to quality in a banking environment - then connects QA with AI and automation after hours. Co-founder of Quality Cat, blog founder and author of the Holak Scale of working maturity with AI. More at holak.net.pl.

Konrad "Gumiś" Gomulski

Senior TDE @ Sii Polska

Senior TDE at Sii Polska, seasoned tester and automation engineer. Has been backing the blog from day one - even if his own posts are few, he reads, verifies and reviews everyone else's, bringing an engineering perspective on code and test quality.

Filip Barszcz

QA Chapter Lead @ SCIB

QA Chapter Lead at Santander Corporate & Investment Banking. Leads QA teams and sets testing standards across banking products. Fights alongside Grzegorz for better quality every day - from process level down to the individual test case.