Marek Wiśniewski

Experience as hard as Silesian steel

Marek joined Silesia Performance Lab in June 2017. Previously, he worked for 6 years in the technical department of a large software house in Gliwice. He is responsible for our most difficult technical audits. He doesn't write general guides that can be found on the internet. Marek digs through thousands of lines of server logs to find the specific reason why Google doesn't see your pages. We check facts, we don't promise miracles.

Results that can be counted

In 2023, Marek conducted 43 full technical audits for IT and SaaS companies. One of his greatest successes was shortening the indexing time of new subpages from 14 days to just 18 hours for an e-commerce platform in Katowice. Marek believes that data speaks for itself. In his reports, you will find specific code errors and clear instructions for your programmers. He doesn't use fluff; he shows what to fix so the server stops wasting resources.

Tools and precise approach

His work starts where standard programs end. Marek writes his own Python scripts that check the internal linking architecture of your service. Specific audit, specific profits – that's his daily rule. If your site is slow or losing traffic after an algorithm update, Marek will find the cause, usually within 48 hours of starting work. We do technical SEO that works because we rely on logic, not guessing.

Clockwork accuracy

Privately, Marek is a fan of precision. When he's not analyzing databases, he restores old mechanical watches from the 1960s. He brings that same focus on detail to every line of code he checks for our clients. Marek won't let up until a 404 error or incorrect canonicalization disappears from the reports. For him, clean code is the foundation without which there's no point in spending money on ads or writing articles.

Project scale

Marek mainly handles clients who have over 5,000 subpages in their service. The largest project he optimized technically in March 2024 had exactly 1,247,000 URLs. Thanks to his fixes in server configuration files, the indexing budget for that domain rose by 37% in less than two months. If you need a person who understands the language of programmers and Google algorithms, Marek is the right person.