Technical SEO specialist

Vacancy: join our new customer team

Ensuring optimal visibility. Your technical SEO knowledge and analysis put our clients' websites in the spotlight.

Yes, we are looking for you!

Crawling, indexing and speed. As a technical SEO specialist, you are completely at home with the technical workings of websites. Preferably, you spend all day analysing and adjusting websites to get higher in Google. Just like us! At our Onder agency in Zwolle, we will teach you the tricks of the trade.

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. These include clients such as YourSurprise, Stoov and Kitcentrum. You will continue to grow in this profession as a technical SEO specialist at the:

  • analysing websites.
  • improving technical SEO elements.
  • advising our customers and engaged developers.
  • Performing SEO migrations.
  • Perform data analysis in the various SEO tools.
  • Creating reports.

We are Onder

Scoring a high position in Google for our clients, that gives us energy. Pleased to meet you, we are Onder, a specialist SEO agency in the heart of Zwolle. Our ambition is to become one of the best SEO agencies in the Netherlands. Too ambitious? Certainly not. Within our team, we continuously put our heads together to perform above expectations. After all, you never stop learning in this business. Whereas Google is getting smarter and smarter at reading texts, we are constantly taking steps in the onder search, analysis and optimisation of websites. Obviously within the SEO field, because that is where our strength lies.

You will join a team of 10 colleagues, onder divided into two client teams (the A-Team and the B-Eagles). All of them specialists who speak the SEO language like no other. You will probably talk to them in no time. You will get to know our clients and our way of working, but we are also definitely open to change. In the meantime, we sit together every Tuesday afternoon to see what can be improved in our services. Your ideas are certainly welcome here too. If possible, we also try to have lunch together every day while going for a walk. Just stretch your legs!

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 know all about or want to learn all about the technical part of SEO. Logical, because search engines are constantly evolving. With your eager to learn, you enjoy jumping in at the deep end to discover everything in this field. You work accurately, structured and independently. You also have:

  • An HBO working and thinking level.
  • at least 1 year of work experience, e.g. as an online marketer, webmaster or developer.
  • an excessive interest in how a search engine works

Of course, we are also open to SEO specialists with more experience!

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:

  • €2,600 to €3,900 salary, depending on experience (junior or medior)
  • 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
  • a regular DoMiBo (yes, on donderday yes)


This is it, your job! So don't wait any longer and apply today by emailing to celine@onder.nl. Don't forget to attach both your CV and cover letter. We look forward to meeting you!


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!

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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