Testimonials
Let our customers convince you
Tioga Tours
Right from our first meeting, we had a good feeling about Onder. No lengthy plans or strategies, but straight to the point and substantively strong. Through a comprehensive SEO audit, Onder provided clear insight into where our key opportunities and areas for improvement lie. In the follow-up phase, they’re helping us to set the right priorities, maintain an overview and monitor progress. Communication is smooth, open and honest, and they’re not afraid to be critical when necessary. We find the collaboration to be pleasant and professional, and we are very satisfied with the steps we are taking together.
Erik Wielink
Marketer
Homie
At first I thought: here’s another one of those SEO groups. But at Bureau Onder, I soon realised that it works differently. I really do feel that it’s making me smarter too.
Sanne and Ivo provide our clients with clear, concise reports based on objectives we agree on together in advance. No vague talk of clicks and rankings, but insight into what is happening, why it is happening and where the opportunities lie.
In addition, there are webinars in which they actively share their knowledge and make SEO accessible and practical. I think that’s perhaps their greatest strength: Bureau Onder doesn’t just carry out the work, but involves you in what they do. As a result, not only do the results improve, but so do we ourselves.
Daan de Haan
Homie partner – Periscope
DCTerra
Onder provided us with excellent support and expert advice throughout the migration process. The team maintained a clear overview of the entire process and monitored progress closely. Thanks to their dedication, expertise and direct lines of communication, the migration went very smoothly and we are extremely satisfied with our collaboration.
Annemarie de Boer
Online marketing consultant
Windesheim
Onder Agency helped us organise the course choice information on our website in such a way that it better aligns with the search behaviour of our target groups and is easier to find in LLMs. Working with Ineke, Jelle and Martijn was a pleasure; they were committed and professional. It really felt as though we were all working towards a single goal. The result is content that is not only easier to find and more relevant, but which we can also use extensively in our communications.
Nienke Boer – de Valk
Content marketer
Zoomin
“We recently attended training at Bureau Onder, given by Cynthia. and this was definitely a valuable experience! The content of the training was strong, practical and pleasant to follow. Theory and practice were continuously alternated, making it possible to apply everything directly to our own situation. Our team gained valuable knowledge!
Thanks Cynthia!”
Mike Alsemgeest
SEO specialist
Coming among these?
Now make sure your SEO is all set up
Zest for Work
“Working with Jeroen and the Onder team felt like a true partnership. Jeroen provided both strategic and hands-on leadership during the website transition, seamlessly aligning the technical and SEO strategy with our web development agency. If you want a SEO partner who delivers clarity, collaboration and measurable results, Onder is the one to trust.”
Rochelle Barreto
Marketing & Sales lead
Métier
“We experience the cooperation with Onder as very positive. Ineke knows how to switch flawlessly between strategy and operations. In a short time, she taught me a lot about SEO, campaigns and analyses, allowing us to execute independently. This allows Ineke to do what she enjoys most: giving advice, sparring on the main points and making clients more proficient with online marketing step by step. As a result, we have achieved visible results!“
Marjan Tamminga
Office manager
Conversion partners
We are working with Bureau Onder for a client of our online marketing agency. Super satisfied with the gentlemen and ladies of this team. No woolly (or lying) talk, but clear language and also very pleasant people to work with: a relief in this industry.
Mark van Loon
Founder / Co-owner
Knipping Frames
We have a SEO audit conducted by Onder. This was very enlightening and practical. Ivo and Sanne actively thought with us and came up with targeted advice. We were given a whole list of practical points to pick up. The first results have already been achieved!
Daphne Komen
HR and marketing
Coming among these?
Now make sure your SEO is all set up
Straight Forward Lawyers
I have been working with Onder for about a year now and really should have done so much earlier. I thought I could do it all myself with that SEO and I was doing just fine but since working with Onder, my website's findability and conversions have gone up tremendously. Jan Willem is a true professional who takes the time to understand your business and therefore knows exactly what works. What’s more, I simply have a great deal of confidence in Onder. I’ve had some very bad experiences with other online marketing companies, which is why I actually wanted to keep doing everything myself. I’m glad I decided to outsource my SEO after all. It’s better for my business and it also gives me peace of mind, knowing that my website is in very good hands.
Lotte van de Wetering
Lawyer
Windesheim
Bureau Onder helped us with a specific SEO issue. After several meetings, we came up with a concrete plan of action with the end result being a solid and very comprehensive advice that included all SEO disciplines. A valuable concrete document that we could immediately start working with, as we wanted. We experienced our contact with Martijn, Jeroen and Britt as pleasant and approachable...
Marleen Spikker
Content manager corporate websites
Pixelpillow
"Onder helped us with SEO, SEA and linkbuilding. Mainly, Mariska and Tristan have guided us. There is always an informal and casual atmosphere during our monthly meetings. Mariska and Tristan keep us on our toes and think well across SEO and SEA.
Although we needed a run-up to achieve our initial success, we now have nice positions in Google to grab. Alongside a structured SEO approach, we have demonstrably brought in leads and sales through SEO and SEA. With the help of Onder, we have achieved great results, whereonder brought in a lead that generated 50K sales."
Milan van Bruggen
Director
Shift to Solar
"Bureau Onder ondersupports us with SEO and we are very satisfied with this. Martijn, Cynthia, Mariska and Leanne are assisting us in this process. Cooperation with this team is excellent. The team thinks proactively, which really helps us in terms of online marketing.
Shift to Solar experiences this collaboration as extremely positive, as it completely relieves us of the burden. Onder has helped us increase our brand awareness and attract more customers. In addition, they have improved the SEO migration of our website in the right direction. We would definitely recommend Bureau Onder, as we have done several times in the past!"
Rens van Gurp
Founder
Shift to Solar
Rens van Gurp
Founder Shift to Solar
SEO advanced training
"It was a nice informative training. It helped me a step further. Clear and easy to follow, as it is not everyday material for me. Furthermore, a good alternation of theory and how to put it into practice."
Bas Smit
Funeral director
SEO course
"It was very instructive. Theory was coupled with practice. I personally would have liked a bit more depth, but that's because I already have some experience and knowledge of SEO. In addition, I found it somewhat disturbing that other participants were busy with other things. This could have been overseen a bit more, but apart from that, Ineke really told a lot and she really does this very clearly. It really gives you a stepping stone to improve your own website."
Rieneke Gerritsen
Marketing officer
Coming among these?
Now make sure your SEO is all set up
ONK Poker
"Onder engaged with a full team to scrutinise our website from several key SEO aspects onder. In doing so, they Bart, Ivo, Jesse and Martijn thoroughly and were able to identify key issues for each onder section. The audit gave us concrete action points, which were clearly formulated by Onder in a Trello board. Through these action points, we as a team can get to work in a targeted way to solve problems that are worsening our site's ranking. As we have come to expect from Onder, the collaboration went well and provided full SEO audit given us concrete tools to work with ourselves."
Erik
Onk
Homie
"The collaboration with Bureau Onder started in September 2022. At the introductory interview with Martijn there was an immediate 'click'. It felt right away. Besides the now significant results achieved, I am very satisfied with the cooperation with the team at Bureau Onder (Bart and Jesse). Bart is a professional, who does not settle for the obvious answer and always delivers that 'little' extra. He gives me the confidence, that with Bureau Onder, Homie has the right SEO partner."
Maurice van Gaalen
Team Homie
The Factory of the Future
"During the development of the Jewish Cultural Quarter's new website, we partnered with agency Onder to best onder bring the exhibitions, onderwij programmes and our four locations to the attention of visitors. Jesse, Ivo, and Ineke have provided us with expert SEO consulting helped during the migration from the old website to the new website, internal SEO courses of our team, and work hard to maintain and grow our traffic."
Nanne Brouwer
Strategist and facilitator
Zehnder
" During the migration of our website, we enlisted the help of Onder, which proved to be a good choice. They advised and ondersupported us throughout the process, and this resulted in us seeing our organic positions come back quickly after the migration and not having to sacrifice much on our SEO traffic. Super!
In addition, the whole team is a bit wiser through two interactive trainings, one around SEO from Ineke and one around GA4 from Cynthia. Very valuable. In short, looking for a fine and good SEO party? Then you have come to the right place at Onder. "
Marieke Schulenburg
Marketing & Online lead project manager
YourSurprise
“We asked Onder to help us manage the YourSurprise brand, an ecommerce with multilingual domains, each of which brings with it different challenges.
Challenges that Martijn and Tristan were able to meet competently, working closely with our in-house SEO team.
Onder is a professional and competent agency with large-scale experience.
It has supported us in various projects, clarified doubts and answered our questions, allowing us to grow professionally and as a brand.“
Feliscia Silva
SEO channel specialist at YourSurprise
Bulb Cheap
"At Gloeilampgoedkoop, we are working on our online growth. Agency Onder, with Ivo and Ineke as contacts, have helped us with their honest and transparent approach. They optimise our content and we see stable growth in organic traffic. The cooperation is smooth and efficient, with monthly evaluations. We look forward to continuing this pleasant cooperation."
Jaap Lentjes
Marketing manager Light bulb bargain
Coming among these?
Now make sure your SEO is all set up
Novar
We have now been working successfully with Onder for several years. To keep the knowledge up-to-date within our team, we recently in-house a training followed at Ineke.
During an interactive session, Ineke brought our knowledge of SEO up to date. Theory was combined with interaction in a fun way. Even during the session, we immediately started working with practical examples from our own website. It was a useful tailor-made training that took our knowledge level into account.
Esther Terpstra
Online marketer
Qseals
From the first week of working with Onder, I noticed that we were on the right track. Onder acted proactively and I love that! Everything was tracked neatly and we had a short weekly meeting to go over ongoing issues. We successfully completed our project with Onder and achieved our objectives, thank you very much! Martijn and your team! Are you hesitating to boost your SEO? I say, just do it and you will be happy with the results!
Menno Leeuwerink
Managing Director
Daka
Thanks to good analysis and a comprehensive redirect plan from Martijn and his team, we had a flawless replatforming in which DAKA switched to Magento. Advice to the content team from DAKA have provided better URL structure, category descriptions, meta titles and descriptions. Onder's accessibility and knowledge is very good and for this reason I can definitely recommend Onder as a SEO partner.
Richard Schenderling
Webshop Manager
Green Choice
Martijn has a SEO training given to colleagues from different teams, with different levels of knowledge. Quite a challenge, but with relevant examples from our own website, he made sure that all the information fell perfectly into place. The exercises could also be applied to the website right away, so the training proved its value straight away!
Martijn Koetsier
Online marketer a.i.
Radboud University
Radboud University faced a complex challenge this spring: we wanted to largely switch to an entirely new website (new technology and new look-and-feel), but as this cannot be done in one go, we also had to continue using parts of our old website(s) for a considerable period of time. And, of course, we wanted to continue to be found at least as well by the major search engines.
At the SEO migration and the many redirects required for this have Martijn and his colleagues helped us atzonder very well. Despite the fact that we only had a few weeks to get this right, they got the job done to our complete satisfaction, thanks to their expertise, pragmatism, flexibility and the ability to move quickly when circumstances changed.
Marien de Clercq
Project manager CustomerOnline
Matrasfactory
Martijn and Mariska make the SEO story understandable to the layman and are happy to think along with us. It is nice that there is a personal contact moment every month with a comprehensive report and the opportunity to talk everything through.
After just a few months, Onder has already managed to achieve the number 1 positions on Google with some of our webshop pages. We are very satisfied with Onder.
Marten Stellingwerf
Webmaster
Coming among these?
Now make sure your SEO is all set up
Kitcentrum
The agency Onder helps us with our organic search visibility, both via SEO and via GEO. They look at how we can maintain our visibility in search engines using Kitcentrum and, increasingly, in AI-generated answers as well.
They’ve already demonstrated what they’re capable of during previous changes to our URL structure. We didn’t lose any rankings; in fact, our search visibility actually improved. That inspires confidence.
Onder is now helping us prepare for our replatforming. We are fully confident that they will guide us effectively through this transition and will be able to retain our organic rankings as much as possible.
Felix Noordberger
Managing Director
Aluwdoors
For us, Bureau Onder is an honest SEO agency who know what they are talking about. It's nice working with a company that has a lot of dispersed knowledge but also works transparently so we can cooperate well in this. Also regular people you work with so it stays clear. In short; highly recommended! We hope for a long and good collaboration!
Jan Kok
Marketing
Peugeot
Whether it's about content or technical adjustments, it doesn't matter. Martijn briefs this in a very clear way so that it can be implemented locally or by our head office in France. [...] Since the start of our collaboration, we have achieved great results. Keep it up!
Renzo van Dongen
Digital content manager Peugeot
Solarfields
The specialist knowledge and structured approach of Martijn and Ineke helped Solarfields enormously with our positioning in the (online) market. This includes the wireframes of our website, the findability of our organisation, the details of our online campaigns and tips on the search behaviour of our main target groups.
David de Jong
Marketing Manager Solarfields
Si-Es-An
Working with Martijn & Ineke we experience as very pleasant. They think with you, have many ideas and see the extra points where more can be gained. We see the marketing of our camping Overijssel grow in the clear reports and can thus continue working pleasantly with a strong foundation behind them. Can't figure it out? Martijn and Ineke have a solution!
Paulien Hooikammer
Marketing assistant Camping Si-Es-An
Voys
Martijn has been working for us as a SEO expert for some time now, helping us to get more out of Google. It's not an hourly-bill work because Martijn also takes us through the how-and-what and its importance so there is also a lot of knowledge sharing. All this with a lot of humour which makes the cooperation incredibly fun. Should Martijn ever be looking for a new job, he is more than welcome to join us.
Annemieke Doornbos
Online marketer
Coming among these?
Now make sure your SEO is all set up
Appwiki
If someone asks me to SEO consulting I always point immediately to Martijn. Martijn is proactive, committed and thinks in terms of achieving goals. With great expertise, he is the man to structurally improve your SEO positions. He is also a great guy to work with.
Henk-Jan Kosse
CEO
Stella
For several years, Onder has been a valued partner of Stella. Martijn is my sparring partner for complex SEO issues and the extra pair of critical eyes that keeps us on our toes. Together, we have achieved nice growth in online visibility, visitor numbers and leads. Onder onder stands out for its short lines of communication and professionalism. They speak our language: don't nag, get down to business. That is what we love!
Mark Prummel
SEO Specialist Stella Bikes
dTLS
The SEO training that Martijn was very informative. Martijn knows well how to outline all the things that are important when it comes to achieving a good SEO position. Martijn not only goes into the content aspects of SEO, but above all gives extensive attention to technical SEO. He conveys this in a calm and enjoyable way. If you also want to get serious about SEO, I definitely recommend training with Martijn!
Rianne Jacobs-Schouten
Owner
Finner
In the SEO field, Finner has accumulated quite a lot of knowledge over the years. It was therefore not easy to find a good sparring partner. In Martijn we certainly found them. At the migration to a new domain and website, he helped us excellently. He is content strong, honest and a nice person.
Bart Spronk
Co-founder Finner
Firewoodcompany.co.uk
With the move of eight different webshops in six months, you don't always have to deal with a well-spread bed. For Martijn no problem at all. Besides his thorough knowledge in the field of SEO (both in advice and implementation), he is also an excellent discussion partner and helped give direction to this extensive process for us. As far as we are concerned, SEO knowledge and skills, analytical ability and a pleasant manner of interacting are right up his street. Let's just hope he doesn't get too busy.
Jack van Nieuwenhuizen
Co-owner
Marketing Crew
Martijn took the entire Marketing Crew team into the world of SEO. Really all onder topics were covered during the SEO training and we went into a lot of depth. This made it immediately clear to us that Martijn is extremely knowledgeable. We dealt with our own cases, so that we could immediately apply the knowledge we had gained to our own projects. It really was a very valuable training.
Larissa Braam
Marketing and communication specialist
Coming among these?
Now make sure your SEO is all set up
Pension Visor
The SEO world is full of self-appointed gurus. Some know better than others. Not infrequently, they crack each other down and sell new services or sites. So the key is to find a good supplier... In this search, we became Martijn referenced by another company. Martijn is a breath of fresh air in this world. Modest, a thinker, finally an advisor who does not make empty promises. The whole process takes time, money and patience. After several months, there were sufficient results. We are happy to recommend Martijn to companies, who want serious onder support in their SEO policy.
Marcel Wallage
Owner
Spacewinner
SEO is unfortunately not a list you can tick off to rank higher in Google. Good SEO management is hard work, being constantly 'on top of it' and a lot of patience. Martijn knows this better than anyone and that is exactly what he stands for. His knowledge is always up-to-date and he often comes up with smart suggestions. Concept, but also (partly) execution is in good hands with him. His reporting style is to-the-point and easy to understand. Martijn is a SEO-phile with a mountain of experience that I can warmly recommend to anyone not hiring out space!
Joost Kleine Snuverink
Director
Seeders
I have been working with Martijn Hoving (Onder). In a 5-week training course, Martijn gave our team a refresher course on SEO. The SEO training consisted of fifth-part sessions, covering the various components of SEO. Our team found the training very inspiring. Martijn made it clear to our team that SEO is always evolving and and a website is never finished. Martijn's knowledge of SEO is current and progressive. The course was easy to follow and interesting for both beginners and advanced users.
Dennis Akkerman
CEO
Go-kids
We have worked with several SEO specialists but Martijn is zonder some doubt the best. Martijn knows both technical- as well as content wise, and is also not afraid to get his hands dirty. He thinks proactively, steps outside the box and shares his knowledge zonder some restraint. And last but not least, Martijn keeps appointments! We therefore warmly recommend Martijn.
Riëtte Mulder
Co-owner
Fideo
From my past experience as a SEO copywriter, I know a thing or two about SEO. But I’m far from knowing everything. I’d also like to work with SEO on a regular basis, but I lack the time and focus. In Onder, I’ve found a partner that keeps me on my toes. In a monthly briefing, we agree on what I’ll do and what the Onder team will do. After about a month, we meet briefly to discuss progress. For me, this acts as an incentive to keep writing content and, together with Onder, to climb to the first page of Google for as many search terms as possible. Onder also manages an ‘always-on’ SEA campaign for Fideo. Over the past few months, this has brought in some excellent clients and generated tens of thousands of euros in turnover. That’s a great result when you consider the low cost of the advertising. For me, Onder is the undisputed SEO and SEA expert. A great marketing partner who communicates in plain language, and with a sense of humour.
Alexandar Djuric
Co-owner
Sportswearonline.co.uk
Since we started working with “Onder”, our entire campaign structure has changed. This has saved us a significant amount each month. The “Onder” team strictly adheres to agreements and regularly comes up with new ideas of their own. The monthly progress meetings consistently yield new insights and fresh ideas to drive growth even further. They are very committed and give us the feeling that they want the best for Sportswearonline. We are extremely satisfied with “Onder” and would recommend them to everyone.
Rene Esvelt
Owner
Coming among these?
Now make sure your SEO is all set up
SnappCar
Martijn is a good SEO specialist and we at SnappCar work with him finely. In various areas (technical, content, linkbuilding), Martijn helps us. From working out a complete technical plan to writing a meta-description. Martijn always has his feet in the clay and proactively goes to work for you. If you are looking for a SEO specialist, I can heartily recommend Martijn.
Tom Giethoorn
Online marketer
Smienk
Onder helped Smienk connect the dots (despite there being no 'i' at all in SEO). We were also helped with new ideas for qualitative linkbuilding. A very pleasant cooperation in which no 'unnecessary seo packages' are pushed but the best use is made of mutual capabilities.
If you are looking for a seo expert who can help you further at a high level, you are at Martijn/Onder to the right place!
Jan-Peter Boer
Owner
Weflycheap
Martijn is a pleasant person to work with, he thinks along and proactively comes up with SEO consulting. For Weflycheap, we switched from a WordPress website to an entirely new website with headless CMS. Martijn helped us manage the data migration (which was quite a lot), zonder lose our SEO positions. He helped optimise our front-end and website speed and trained us in performing SEO analyses, etc. In short, a very pleasant collaboration that is very useful!
Dutch
English