SEO specialist

Ensuring optimal visibility. Your SEO recommendations highlight our clients' websites.

Yes, we are looking for you!

Algorithms, search terms, authority, organic findability. As a SEO specialist, you are completely at home in the world of websites. Preferably, you spend all day experimenting to make websites rank higher in Google. Just like us! At our agency Onder in Zwolle, you grow with us.

You are the SEO specialist with experience who knows what it takes to achieve success in the search engines. In addition, you have or prefer a clear specialism. For example:

  • Technical SEO
  • Content strategy
  • Authority

Your function

Making websites findable. Easier said than done, right? Fortunately, you don't play hide-and-seek when it comes to putting together the right search terms. In fact, that's where you excel! SEO lays the foundation for a good online marketing mix. You will lay or strengthen this foundation for various clients from different sectors. Think of clients such as Peugeot, Bookmatch, Mattress Factory and Kitcentrum. You will continue to grow in this profession that is at the interface between marketing and technology. And:

  • Performs technical analysis. For example with Search Console, Deepcrawl or Screaming Frog
  • Advises our clients and talks to their developers/web builders
  • Develops successful SEO and content strategies
  • Devises ways to increase awareness and authority
  • Naturally contributes to the marketing of Onder (and your personal brand), in the onder section that suits you best

We are Onder

We are Onder, nice to meet you! A specialist SEO agency in the heart of Zwolle. Our ambition is to one of the best SEO agencies in the Netherlands to become. Too high? Certainly not. Within our team, we constantly put our heads together to perform above expectations and this is a goal we strive for every day.  

In this business, you never stop learning. Whereas Google is getting smarter and smarter at reading texts, we are constantly making strides in onder searching, analysing and optimising websites. Obviously within the SEO field, because that is where our strength lies.

You will join a team with 11 colleagues. These are all specialists who speak the SEO language like no other, supplemented by two colleagues who make sure the process and our own marketing run as smoothly as possible. 

We think it's important not to talk about SEO from time to time, even though we love to do so. This can be during our lunch together, the walk afterwards or our drinks. We have found a good structure for this, so that we can go into the weekend together with some regularity!

Your own personal brand ? the best SEO agency in NL

We want to become the best SEO agency in the Netherlands and believe that the development of our colleagues is as important in this as the results for our clients. That is why we are happy to invest in your own personal branding. Specifically, this means that you:

We help you excel and in doing so, you help us excel too.

Who are you?

You have already done some flying hours within online marketing and/or SEO. As a freelancer, at an agency or on the client side. With your proactive attitude, you will contribute to our clients' SEO direction. In addition, you will learn from your colleagues every day, because eagerness to learn is almost a synonym for a rock-solid SEO specialist.

You work independently and have communication skills. You also have:

  • An HBO/WO working and thinking level.
  • at least three years' work experience, e.g. as an online marketer, SEO specialist, content marketer or project manager.

What we offer you

Admittedly, it is sometimes hard work as a SEO specialist at Onder. In return, you may receive the necessary reward. For this position (32-40 hours), you can therefore count on:

  • €2,700 to €3,900 salary, depending on experience
  • A MacBook from the company plus a second monitor at our office.
  • 35 days off when working a 40-hour week. Compulsory days off is not in our dictionary. You can choose whether to work or be off during Easter Monday, Ascension Day or other holidays.
  • luxury pension scheme
  • € 1,100 training budget per year
  • clear development plan and plenty of scope for personal branding
  • the opportunity to work from home regularly

We are a small team with big ambitions. That also ensures that you will soon be thrown into the deep end, preferably zonder swimming straps too.


Want to apply? Then come up with something that allows you to show us yourself, exactly as you are. What are your talents and what are you looking for in your new employer? Show this with a video, presentation of your Instagram profile or a mood board. Make it up and use your creativity! (Another competence we value highly)

We are not looking for a neatly written letter that has been corrected at the last minute by your partner/mother/neighbour. After all, we have to sit next to you every day and we had better know immediately what and who to expect! Send it to celine@onder.nl and we will get back to you as soon as possible.


Our application process is as follows:

  1. An introductory interview: To find out if there is a click between Onder and you and hear more about the contribution you can make to our team
  2. An assessment: no colour test or the like, but a SEO case, in which you can demonstrate your own SEO knowledge and communication skills
  3. Contract proposal
  4. New challenge!

Any questions?

Do you want to know more about SEO? Could your website use a new boost?
Get in touch

This is us!

A team of SEO specialists

Our team consists of enthusiastic SEO specialists who are happy to work with you for the best results.

Meet our team

These customers are supupside down from us!

Renzo van Dongen

Renzo van Dongen

Digital content manager 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!

Marien van Stegeren

Eigenaar Kitcentrum

When your online onder venture grows, expectations often grow too, in every area. To a large extent, we were in control of SEO and its interpretation ourselves. We found out that our own "general view" was no longer sufficient, so we engaged Bureau Onder. Surprising and clear. We have built up a fine collaboration, partly because Martijn also regularly visits our office with Eline or Mariska (depending on the case), which is very valuable to us!

Marten Stellingwerf


Martijn and Mariska make the SEO story understandable for the layman and are happy to think along with us. It is nice that there is a personal contact moment every month with an extensive report and the opportunity to talk everything through. After just a few months, Onder has already managed to achieve number 1 positions on Google with some of our webshop pages. We are very satisfied with Onder.

Mark Prummel

SEO Specialist Stella Fietsen

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!


Don't miss a single SEO insight
  • Insights on SEO
  • For beginners and advanced specialists
  • From experiments to developments at Google and from
    best practices to our own cases
  • A look behind the scenes at Onder

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