Customer ratings

Learn first-hand how companies are successfully using HubSpot by working with Growth Ninjas. Our customers report measurable results, more efficient processes and sustainable growth.

17. March 2026

Growth Ninjas provided us with excellent support during the CRM implementation. The collaboration was professional, structured and very solution-oriented right from the start. What was particularly positive was how quickly the team understood our requirements and turned them into a practicable solution. In addition, they were highly reliable, responded quickly and were really pleasant to work with. A clear recommendation for anyone looking for a strong partner in the field of CRM and process optimization.

Joachim Penn
Penn, J.
Lensmed Group
Industry: Medical products
Lensmed logo
10. March 2026

From the very beginning, the collaboration was very pleasant with the necessary drive and professionalism. We focused our collaboration on custom APIs and reporting. Viktor deserves a special mention from the team, who provided us with reliable support and results on a weekly basis.

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Lechner, J.
Peter.at
Industry: Renewable energies
Peter.at logo
14. December 2025

Stefan and his team supported us extremely successfully in the implementation of our CRM setup. The fast, uncomplicated cooperation and the team’s high level of technical expertise are particularly noteworthy. Our specific use case was quickly understood and efficiently mapped in HubSpot.

P. Tolloy
Tolloy, P.
AQUISO Sales Solutions GmbH
Industry: B2B lead generation
Aquiso Sales Solutions
11. December 2025

From start to finish, working with Growth Ninjas GmbH was a great experience. The CRM implementation, sales & marketing alignment and HubSpot onboarding went smoothly. The team is not only competent, but also very pleasant to work with. An absolute recommendation!

M. Ritter
Ritter, M.
Team Styria Werkstätten GmbH
Industry: Integrative production operation
Team Styria Logo
13. November 2025

We have had HubSpot for 5 years now and have only ever used about 30% of it. After I asked HubSpot for help, I came across Growthninjas, and since then I think we’ve been using it to its full potential. Many thanks for the great help and good cooperation!
Best regards Paul Kohlstock
Managing Director of KHTC-Consulting GmbH

Services offered

Kohlstock
Kohlstock, P.
KHTC Consulting
Industry: Telco consulting
KHTC Consulting Logo
29. October 2025

The collaboration with Stefan and the Growth Ninjas was efficient and professional. They really went the extra mile, especially when creating our landing pages in HubSpot. They immediately understood our wishes/requirements and implemented the pages at lightning speed and in great quality. It was immediately apparent that they knew their way around HubSpot and were also familiar with the financial sector. As a result, communication and implementation ran smoothly and we are very satisfied with the new, optimized landing pages. We can therefore recommend the Growth Ninjas unconditionally for all HubSpot topics.

Classen
Classen, C.
onvista media GmbH
Industry: Finance portal
Onvista Logo
20. October 2025

Expectations were more than exceeded. Growth Ninjas not only helped us with the migration and implementation, but also took over the on-boarding with our sales and set up and trained us in important functions such as sequences, mailings, templates, etc. I would recommend them 100% and work with them again and again.
Thank you. RP

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Przibylla, R.
Maverix Securities AG
Industry: Financial service provider
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1. October 2025

The Growth Ninjas team carried out our data migration and onboarding in the shortest possible time in a professional and collegial manner. They responded openly to our special requests and impressed us with very fast response times and suitable solutions. We were and are extremely satisfied!

Sommerhuber
Sommerhuber, R.
XARION Laser Acoustics GmbH
Industry: Deep-Tech Acoustics
Xarion Logo
22. May 2025

We worked with Growth Ninjas to customize HubSpot to our internal structures – and we are very happy with the results. The team supported us with a strategic and well thought out approach that helped us make the most of HubSpot’s capabilities. Throughout the project, they were professional, responsive, flexible and always ready to help. We are very happy with the collaboration and can highly recommend this agency to others looking for reliable HubSpot advice.

Services offered

Stephan
Stephan, C.
QPLIX GmbH
Industry: Financial IT service provider
QPLIX Logo
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