Customers and testimonials

Trusted by more than 50 customers in multiple countries

  • logo of Namics (Deutschland) GmbH – A Merkle Company
  • logo of DebugBear
  • logo of Panstream AG
  • logo of Simon Schnetzer
  • logo of Isenhoff GbR
  • logo of Time2tri
  • logo of König GmbH
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What customers are saying:

logo of DebugBear

Marc is writing for our blog at DebugBear. His web performance knowledge helps us to deliver high-quality content to our users He has a strong technical background, and we are happy to recommend him as a web performance consultant.

Matt Zeunert, Founder of DebugBear
Portraitimage of Simon Schnetzer Youth researcher | Speaker | Trainer

Since I've been working with Marc Radziwill, my website has been at the forefront of SEO. I wouldn't have thought it possible what page speed, a clean web architecture and continuous page maintenance makes a difference. Thanks to the competent support as web developer, technical consultant and the continuous care/maintenance of the site, I can fully concentrate on content and concentrate the numerous requests :)

If there is a problem with the site, I often get it only afterwards, because Marc already took care of it and solved the problem. Many thanks for the competent and reliable cooperation and the uncomplicated, direct line.

Simon Schnetzer, Youth researcher | Speaker | Trainer
Portraitimage of Christian Walitzek CEO & Board of Panstream AG

Marc and our company PAN.STREAM have been working together for several years in different projects. He realizes our individual projects to our complete satisfaction and advises us in IT matters. Marc communicates openly and goal-oriented - especially due to his experience as a web consultant, projects can be brought to their goal efficiently and quickly.

We are very satisfied with our enterprise solutions and the recommended technologies. Furthermore we benefit from his expertise as a web performance consultant in our projects.

Christian Walitzek, CEO & Board
Portraitimage of Thomas Herzhoff CEO of Isenhoffs Büro

Marc has been supporting us professionally and up-to-date in the field of web development for three years. With his friendly and understandable advice, he makes development an easy and exciting topic within our projects.

It is perfect for us to have an industry expert, especially on the subject of web performance, as a close partner and to be able to implement projects quickly and easily. We can recommend Marc at any time and will rely on his support for further project

Thomas Herzhoff, Executive Director
Logo of Koenig GmbH

We have used Marc and his consulting services for the further development of our website. We benefit from his expertise as a web performance consultant also benefits from his many years of experience as a web developer.

The performance analysis of our site that Marc did for us helped us to understand how we can quickly identify and efficiently resolve performance problems on our website. We look forward to future cooperation and would be happy to recommend Marc.

Sebastian Steinack, Senior Business Analyst

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