Who are we?

Growl is a boutique agency focused on organizations with an ambitious growth focus. We offer a highly integrated approach between online marketing, websites, and apps, that supports our clients’ growth.

No yes-men

Our work takes knowledge and experience as its starting point. When you work with Growl, we see you as a partner. We deal with the budget as if it were our own. What’s more, if we don’t believe in the plan, we’re not afraid to say no. If the project does not fall within our area of expertise, we will guide you to the perfect partner.

Lasting impact

We believe in guiding with impact, in such a way that we will make ourselves redundant in the long run. We help your organization make a leap forward. To this end, we are setting up a system where knowledge transfer is crucial. This is how we make a lasting impact.

Hunger for knowledge

We have an unending hunger to improve ourselves as professionals, and to learn from people and experiences. One is never too old to learn.

Open communication

Open communication is the basis of any good relationship. Failure is allowed, as long as it leads to moments of learning. In addition, honesty makes everyone happier.

Cooperation is key

We have a wide range of services, but believe in the power of collaboration. If you have an existing partner or supplier, we will work together additionally. Value creation for you as a customer is paramount.

Take hold of your knowing

We don’t believe in the concept of a 360° agency as a “one stop shop” for all marketing and digital needs. We specialise in various areas where we can ensure effective added value and high quality. If we cannot help you with a particular request, we will refer you to persons we trust ourselves.

Structure without politics

We work in a structured way to get the best results. We do not believe in internal company politics and unnecessary hierarchy. Good ideas stay good, no matter who came up with them. Feedback is something that is given and received.

People first

We accept people for their way of being and we welcome new team members with open arms. Everyone is treated with respect and a smile. We see diversity (including diversity of thought) as an added value.

Pieter en Neal tijdens een brainstormsessie


Growl was born out of SiteOptimo (online marketing and consulting) and CodeCliff (web and app development). With over 12 years of experience in web and digital, we take you by the hand in your growth story.

European team of experts

Growl works remote-first. We have an office in Sint-Niklaas, Belgium. However, people who work for us may choose from where they work: in the office or remotely. We have a close-knit internal culture and see Europe as our playing field. A mix of different European cultures contributes to the diversity of our team and our approach to our clients.

  • Laura
  • Tymon
  • Pieter
    Co-founder, digital strategist

    After completing his product development training, pieter started his own company called SiteOptimo in 2010. Here he has spent the last 11 years advising on digital strategy, SEO and usability to a wide range of clients including Kinepolis, Easyfairs, Lansweeper, ICsense, DJO Global and Job Fixers.

    Pieter is responsible for the development of digital strategies and is in charge of the quality control of our audits and advertising campaigns. Furthermore, Pieter is constantly looking for ways to improve the ranking of our websites in search engines to make a bigger impact on our clients.

    +32 4 72 79 77 20 pieter@growl.be
  • Neal
    Co-founder, full-stack developer

    At the age of 23, Neal founded his own startup called Wizer. Wizer was a system for collecting feedback and customer data in the hospitality industry. The application collected over 15,000 reviews in just two years, which was very high compared to other channels. After the start-up experience, Neal decided to switch to building websites and applications for other companies.

    On a daily basis Neal is busy coordinating the team, reviewing written code and further developing applications and websites.

    +32 4 98 54 90 20 neal@growl.be
  • Laura
    Wireframe, design and QA

    Laura received her Master’s degree in UI/UX from the University of Dublin and has worked on major projects including Media Markt during her career.

    Laura is busy creating wireframes and designs on a daily basis. She also performs quality checks for all of our projects to detect problems early.

  • Martin
    WordPress developer

    Martin worked as a freelance WordPress developer for the last 5 years. Here he developed custom themes, plugins and built multiple e-commerce websites using WooCommerce. In addition to realising projects, Martin is constantly looking for new technologies and ways of working to improve our approach.

    Throughout the week Martin is busy writing, improving and proofreading code needed to run our websites.

  • Tymon
    React developer

    In addition to the experience Tymon has built up in his career, he has conceived and launched his own projects. He built an Android application (RSS Reader) and a web application to manage Spotify playlists more conveniently.

    On a daily basis, Tymon is writing, updating and proofreading code for our custom applications.

  • Henrique
    WordPress Developer

    Henrique has been building and expanding WordPress websites full-time since 2013. During his career he has helped various types of companies including venture capitalists, training centers and larger non-profit organizations. The knowledge he has accumulated is used on a daily basis for our customers and projects and is necessary to pursue our level of quality.

    Together with Martin, he ensures that our websites are built to perfection and blazing fast.

  • Jullia
    WordPress developer

    Jullia has been working with WordPress since 2021 and has worked for several companies throughout her career. Because of this she has earned her stripes in the field of development and she knows her way around developing custom themes and plugins.

    Together with the team, she continuously works on improving our way of developing to help our customers faster and better.


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