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Diamond Solutions Partner

Growth Ninjas GmbH

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Services we provide
  • Account based marketing
  • Branding
  • Community Management
  • Content Creation
  • Conversational Marketing
  • CRM Implementation
  • CRM Migration
  • Custom API Integrations
  • Customer Marketing
  • Customer Success Training
  • Customer Support Training
  • Email Marketing
  • Full Inbound Marketing Services
  • Help Desk Implementation
  • HubSpot Onboarding
  • Knowledge Base Development
  • Paid Advertising
  • Programmable Automation
  • Sales and Marketing Alignment
  • Sales Coaching and Training
  • Sales Enablement
  • Search Engine Optimization
  • Social Media
  • Website Design
  • Website Development
  • Website Migration
Industries we specialize in
  • Ecommerce
  • Finance & insurance
  • Media & publishing
  • Medical & wellness
  • Technology - software
Budgets we work with
    $5,000+
Languages we support
  • German
  • English
Regions we serve
  • EMEA

About Growth Ninjas GmbH

Wir sind Experten für maßgeschneidertes Wachstum für Ihr Unternehmen. Sie wollen hoch hinaus? Wir auch! Deshalb helfen wir Ninjas unseren Kunden bei ihrem Wachstum – durch genaue Bestandsaufnahme der Ausgangssituation, konkrete Maßnahmen-Roadmaps und Unterstützung in der Umsetzung. Warum wir so erfolgreich sind? Weil wir Wachstum messbar machen. Los geht’s!

Client Reviews for Growth Ninjas GmbH

Average rating

5.0

Based on 36 ratings

Total reviews

36

Number of reviews all-time

Overall rating

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36 Reviews


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5/5
  • Oct 29, 2025

Efficient and professional HubSpot landing page design

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.

Services providedWebsite Development and Website Design

Efficient and professional HubSpot landing page design

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.

Services providedWebsite Development and Website Design
  • Classen, C.

Translated from Deutsch. View original text
5/5
  • Oct 20, 2025

Top support: fast, uncomplicated, efficient and lots of knowledge

Our 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 on important functions such as sequences, mailings, templates, etc.. I would recommend them 100% and work with them again and again. Thank you. RP

Services providedHubSpot Onboarding, Sales and Marketing Alignment, Sales Coaching and Training, CRM Migration, Sales Enablement, and CRM Implementation

Top support: fast, uncomplicated, efficient and lots of knowledge

Our 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 on important functions such as sequences, mailings, templates, etc.. I would recommend them 100% and work with them again and again. Thank you. RP

Services providedHubSpot Onboarding, Sales and Marketing Alignment, Sales Coaching and Training, CRM Migration, Sales Enablement, and CRM Implementation
  • Przibylla, R.

Translated from Deutsch. View original text
5/5
  • Oct 1, 2025

Top-notch!

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!

Services providedHubSpot Onboarding, CRM Migration, and CRM Implementation

Top-notch!

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!

Services providedHubSpot Onboarding, CRM Migration, and CRM Implementation
  • Sommerhuber, R.

Translated from Deutsch. View original text
5/5
  • May 26, 2025

HubSpot onboarding for marketing and sales

The Growth Ninjas team supports us professionally, personally, individually and warmly. We feel we are in good hands and can successfully accelerate and professionalize our onboarding of the marketing and sales team with their support. Unreserved recommendation! Many thanks especially to Viktor and Stefan!

Services providedAccount based marketing, HubSpot Onboarding, Email Marketing, CRM Implementation, and Social Media

HubSpot onboarding for marketing and sales

The Growth Ninjas team supports us professionally, personally, individually and warmly. We feel we are in good hands and can successfully accelerate and professionalize our onboarding of the marketing and sales team with their support. Unreserved recommendation! Many thanks especially to Viktor and Stefan!

Services providedAccount based marketing, HubSpot Onboarding, Email Marketing, CRM Implementation, and Social Media
  • Joergensen, U.

Translated from Deutsch. View original text
5/5
  • May 22, 2025

Outstanding HubSpot Expertise and Support

We worked with Growth Ninjas to adapt HubSpot to our internal structures—and we’re very pleased 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 helpful. Their expertise made a real difference, and we felt well supported at every step. We’re very satisfied with the collaboration and can warmly recommend this agency to others looking for reliable HubSpot guidance.

Services providedHubSpot Onboarding

Outstanding HubSpot Expertise and Support

We worked with Growth Ninjas to adapt HubSpot to our internal structures—and we’re very pleased 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 helpful. Their expertise made a real difference, and we felt well supported at every step. We’re very satisfied with the collaboration and can warmly recommend this agency to others looking for reliable HubSpot guidance.

Services providedHubSpot Onboarding
  • Stephan, C.

5/5
  • May 12, 2025

Optimization of our CRM thanks to Growth Ninjas

The team has helped us to optimize our CRM tool and take it to a new level. The collaboration is uncomplicated, fast and very professional. They not only supported us with the technical implementation, but also actively thought along with us. A clear recommendation!

Services providedCRM Implementation

Optimization of our CRM thanks to Growth Ninjas

The team has helped us to optimize our CRM tool and take it to a new level. The collaboration is uncomplicated, fast and very professional. They not only supported us with the technical implementation, but also actively thought along with us. A clear recommendation!

Services providedCRM Implementation
  • Fischer, L.

Translated from Deutsch. View original text
5/5
  • Apr 25, 2025

Great collaboration

Stefan and his team provided us with sensational support during the implementation of our CRM. With HubSpot, no more leads are lost.

Services providedCRM Implementation

Great collaboration

Stefan and his team provided us with sensational support during the implementation of our CRM. With HubSpot, no more leads are lost.

Services providedCRM Implementation
  • Nothdurft, T.

Translated from Deutsch. View original text
5/5
  • Aug 5, 2024

Vielen Dank an alle Growth Ninjas

Vielen Dank für die intensive Begleitung bei der erfolgreichen Migration von Pipedrive zu HubSpot. Die Growth Ninjas haben uns dabei begleitet, unseren Salesprozess sinnvoll auf der neuen CRM-Plattform abzubilden und zusätzlich bei der Integration unseres Operations zu unterstützen. Wir können eine Zusammenarbeit sehr empfehlen!

Services providedHubSpot Onboarding, CRM Migration, Custom API Integrations, and CRM Implementation

Vielen Dank an alle Growth Ninjas

Vielen Dank für die intensive Begleitung bei der erfolgreichen Migration von Pipedrive zu HubSpot. Die Growth Ninjas haben uns dabei begleitet, unseren Salesprozess sinnvoll auf der neuen CRM-Plattform abzubilden und zusätzlich bei der Integration unseres Operations zu unterstützen. Wir können eine Zusammenarbeit sehr empfehlen!

Services providedHubSpot Onboarding, CRM Migration, Custom API Integrations, and CRM Implementation
  • Kruff, J.

  • Technology - Software
  • 26 to 50 employees
5/5
  • Jul 2, 2024

Zusammenarbeit mit den Ninjas

Die Zusammenarbeit macht Spaß und hat uns gut durch die Entscheidungsphase für HubSpot sowie die Erstimplementierung gebracht. Mittlerweile haben wir das Marketing und zwei Sales Abteilungen auf HubSpot umgestellt und verzeichnen bereits eine Steierung der Effizienz. Wir haben in vielen Bereichen durch gutes Onboarding bereits Fähigkeiten bei uns im Team aufgebaut. Insgesamt bekommt man ein gutes Gesamtpaket vom ersten Onboarding bis hin zur Umsetzung von komplexen API Tasks / Custom Code Workflows.

Services providedEmail Marketing, Sales and Marketing Alignment, Custom API Integrations, and CRM Implementation

Zusammenarbeit mit den Ninjas

Die Zusammenarbeit macht Spaß und hat uns gut durch die Entscheidungsphase für HubSpot sowie die Erstimplementierung gebracht. Mittlerweile haben wir das Marketing und zwei Sales Abteilungen auf HubSpot umgestellt und verzeichnen bereits eine Steierung der Effizienz. Wir haben in vielen Bereichen durch gutes Onboarding bereits Fähigkeiten bei uns im Team aufgebaut. Insgesamt bekommt man ein gutes Gesamtpaket vom ersten Onboarding bis hin zur Umsetzung von komplexen API Tasks / Custom Code Workflows.

Services providedEmail Marketing, Sales and Marketing Alignment, Custom API Integrations, and CRM Implementation
  • Langer, A.

  • Education
  • 51 to 200 employees
5/5
  • Jul 2, 2024

Growth Ninjas bei SchuBu

Das gesamte Team der Ninjas rund um Stefan Greunz hat uns sehr gut betreut und ist immer zur Stelle, wenn es darum geht, unsere Prozesse zu optimieren und neue Ideen aufzugreifen. Nach sehr langer und intensiver Recherche, welches CRM System tatsächlich das Richtige für uns ist/wäre, haben uns die Ninjas sehr schnell die Vorzüge und Qualitäten von HubSpot dargelegt.

Services providedHubSpot Onboarding, Programmable Automation, CRM Migration, Sales Enablement, and CRM Implementation

Growth Ninjas bei SchuBu

Das gesamte Team der Ninjas rund um Stefan Greunz hat uns sehr gut betreut und ist immer zur Stelle, wenn es darum geht, unsere Prozesse zu optimieren und neue Ideen aufzugreifen. Nach sehr langer und intensiver Recherche, welches CRM System tatsächlich das Richtige für uns ist/wäre, haben uns die Ninjas sehr schnell die Vorzüge und Qualitäten von HubSpot dargelegt.

Services providedHubSpot Onboarding, Programmable Automation, CRM Migration, Sales Enablement, and CRM Implementation
  • Müller-Uri, U.

  • Education
  • 11 to 25 employees
Services we provide
  • Account based marketing
  • Branding
  • Community Management
  • Content Creation
  • Conversational Marketing
  • CRM Implementation
  • CRM Migration
  • Custom API Integrations
  • Customer Marketing
  • Customer Success Training
  • Customer Support Training
  • Email Marketing
  • Full Inbound Marketing Services
  • Help Desk Implementation
  • HubSpot Onboarding
  • Knowledge Base Development
  • Paid Advertising
  • Programmable Automation
  • Sales and Marketing Alignment
  • Sales Coaching and Training
  • Sales Enablement
  • Search Engine Optimization
  • Social Media
  • Website Design
  • Website Development
  • Website Migration
Industries we specialize in
  • Ecommerce
  • Finance & insurance
  • Media & publishing
  • Medical & wellness
  • Technology - software
Budgets we work with
    $5,000+
Languages we support
  • German
  • English
Regions we serve
  • EMEA