Marketing Trainee

Normally, this would now have been a rant with what we as Onder are looking for for the marketing internship. Instead, we would like to start with a little mood impression about Onder. Our team is 13 strong and we are a very close-knit team. We have lunch together during breaks and team outings or drinks are also organised regularly. As you have seen on the site, Onder is a SEO agency. As a SEO agency, we have 3 client teams to help our clients. There is also a 4th team, which you will join as a marketing intern. This team is responsible for Marketing and SEO of Onder itself. The tasks will vary enormously, from creating social media posts to implementing keywords in texts to rank better in Google. Are you still curious about Onder after this atmosphere impression? Then continue readingonder here. We have made a small list of points that are important to read through in order to determine whether you are a good fit!

Do you recognise yourself in this profile?

You are an enthusiastic student at an appropriate college, in the field of marketing, communications or journalism. You want to develop in the field of online marketing and are interested in SEO. You are eager to learn, have good communication skills, are curious and enjoy working in a team.

Do you recognise yourself in this? Then read on about what we have to offer you!

Marketing / Communications Trainee

What will you do

You play an important role in our marketing team. Together, you will figure out how to get more visitors to the website, bring in more leads through the website and increase our brand awareness. Think about:

  • Writing content and tracking our social media
  • Campaigns via LinkedIn and other channels
  • Content marketing
  • Getting started in WordPress
  • Increase your knowledge of online marketing and its tools
    (SEO, Google Ads, data & CRO)
  • Space to work on your 1TP15Research report/internship assignment

What we offer

Besides the space to gain knowledge about SEO and online marketing, we offer you:

  • An internship allowance of €500 per month for a 40-hour work week
  • An instructive internship full of freedom and responsibility
  • 1TP14Support from specialists within their field of expertise
  • Space to take online courses and training
  • Convivial get-togethers and team outings
Team outing SEO office Onder

Who are we?

We are Onder, a growing specialist SEO agency based in Zwolle. Our ambition is to become one of the best SEO agencies in the Netherlands. Within our team we are therefore constantly putting our heads together to perform beyond expectations. You never stop learning in this business! Our strength lies in the SEO field.

What we ask

  • HBO or MBO education level
  • Affinity (with online) marketing
  • A degree in commercial economics, communications or marketing
  • An internship period starting in September 2024
  • Availability of around 20 weeks, this due to our long familiarisation period required.


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 an internship? 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). Send it to celine@onder.nl and we will get back to you as soon as possible.

SEO office Onder Zwolle - hanzelaan

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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