Case studies
Work you can read up on.
Every case study names the client, the period and the numbers that were actually measured. No rounded-up averages.
Case studies are being documented right now. Until then, the client reviews below show what working together looks like.
Client reviews and case studies
Results that were actually measured.
8 client reviews
Client reviews
Google Ads management · 3 years
„Finding a freelancer who feels almost like a permanent in-house team member is truly rare.“
„Dennis has been managing our Google Ads for three years now and built our entire setup from scratch. We were highly profitable from week one, because he offers a very safe low-budget setup at genuinely fair prices. Dennis works extremely conscientiously, has high integrity and is always reachable. Finding a freelancer who feels almost like a permanent in-house team member is truly rare. Five stars aren't really enough. Absolute recommendation.“
Joshua Küssner
Loona's Skincare · Google review
Google Ads · since 2020
„We started with 2 physiotherapy locations and are already planning our 9th.“
„When we started working with Dennis in 2020, a period of growth began for every company in our group. We started with 2 physiotherapy locations and are already planning our 9th. Thanks to the interplay of all marketing channels, we now also grow organically. I can recommend working with Dennis on Google Ads without reservation.“
Markus Zilliger
Physiotherapie DP GmbH
New customer acquisition
„His holistic knowledge of all digital marketing channels also prevented unnecessary investments.“
„We needed a solution for our new-customer problem. With Dennis we solved it, and his holistic knowledge of all digital marketing channels also prevented unnecessary investments. Thank you, Dennis, for your work and your regular reporting.“
Daniel Philipp
vigespo GmbH
Growth strategy · multiple services
„The strategic approach helped us win new customers, strengthen existing locations and establish our brand.“
„Dennis's network has led our company, Goldjunge Cafés and Goldjunge Catering in Cologne, to strong growth with its expertise and energy. We use almost all of the services on offer. Thanks to the strategic approach we were able to win new customers, strengthen existing locations and establish our brand. The team turns visions into measurable results. A valuable support I can recommend to anyone looking for lasting value.“
Andreas Mitzner
Mitzner & Erdmann GmbH · Goldjunge Cafés & Catering, Cologne
Digital marketing
„Dennis's broad expertise in digital marketing has significantly improved our visibility.“
„Working with Dennis was a real win for our company. His broad expertise in digital marketing has significantly improved our visibility. Particularly impressive is how quickly action plans are implemented, which enables smooth and efficient collaboration with our own clients. A real gain for our business!“
Daniel Jovanovic
Adclip GmbH
Former Google client
„Dennis is the only person I've met so far to whom I would blindly hand over any Google Ads campaign.“
„I have known Google Ads since day one and have run campaigns for Deutsche Telekom, T-Mobile and Apple, among others. I met Dennis as my account manager at Google. At that time I had contact with over 300 Google consultants. In my assessment, Dennis was among the top percent of Google consultants. Since then I have had contact with over 500 consultants and my assessment stands. Dennis is the only person I've met so far to whom I would blindly hand over any Google Ads campaign.“
Sven van der Stok
Google Ads expert · Google review
Google Ads management
„Campaigns are strategically planned, continuously optimized and clearly explained.“
„We are very satisfied with the collaboration. Dennis's support is competent, transparent and reliable at all times. Campaigns are strategically planned, continuously optimized and clearly explained. We especially appreciate the fast communication and the measurable results. Clear recommendation for anyone who wants to run Google Ads professionally and successfully!“
Karim Kachouri
Client · Google review
Google Ads freelancing
„Clear recommendation for anyone looking for a competent Google Ads freelancer.“
„Top work from Dennis! Very reliable, professional and committed at all times. You can tell he has a lot of experience with Google Ads. We have already seen him achieve excellent results across several projects. Clear recommendation for anyone looking for a competent Google Ads freelancer.“
Customer Flows
Agency partner · Google review