I’m Michał Ślęzak Test Architect at Sii Poland.

Welcome to my site!
I’m Michal Slezak, a passionate Test Architect with over 9 years of hands-on experience in test automation. Throughout my career, I’ve led test automation projects for major banks, contributed to aviation systems, and collaborated with innovative startups like ArtistGrowth and WhatClinic.com.
Currently, at Sii, I’m actively engaged in various projects and initiatives, constantly striving to improve processes and deliver high-quality results.
Beyond my professional work, I run this blog—testingplus.me—where I share insights on test automation in both English and Polish. You might have also seen me speaking or delivering training at industry events such as TestCon, QA Global Summit, 4Developers, TestWarez, TestFest, ConSelenium, and TestCamp.
Thanks for visiting—feel free to explore and reach out!

About me

Highlighted key conferences where I was honored to present

Display your most recent blog articles.

Below, I encourage you to get familiar with my articles. List of all articles here.

Summary of StarEast conference – Why is worth to visit at conference in the US

How to Use Ai with Playwright for UI & API Testing – My presentation at Nordic Testing Days in Tallin

How to Integrate Lighthouse with Playwright for Web Performance Testing (2025 Guide)

StarEast 2025 – Join Me for My Talk!

My Publications, Articles & Speeches

Explore a diverse range of publications, reports, podcasts, and other creative content where unique ideas and valuable insights come together. Some of the content is available in Polish, while some are in English.

Find some resources