We are Onder!

At Onder, we are all about real visibility: being found where your target audience searches and convincing when it matters. We are a team of specialists in SEO, AI-SEO, CRO and content, with a down-to-earth and practical approach that suits who we are and the companies we work with.

We don't believe in pretty stories zonder onderbuilding. We believe in strategy, clarity and work that delivers demonstrable results. That's why we optimise websites technically, content-wise and strategically, always with one starting point: sustainable growth. Every organisation is different. That is why we do not work with standard packages, but with plans that match your goals, your market and your position in the search landscape.

What we do

At Onder, you can fully or partially outsource SEO. We work data-driven and future-oriented, with an approach that matches how people search in 2025. Think technical improvements, content optimisation, local visibility, link building and digital PR. Our AI-SEO approach ensures you stay visible in Google and in modern platforms such as ChatGPT, Perplexity and TikTok Search. We constantly develop and test new workflows to keep you ahead.

With CRO, we improve conversion rates and ease of use. We make websites more accessible, logical and effective so that visitors do what you have in mind faster.

SEO migrations

In addition to ongoing SEO projects, we supervise complete SEO migrations. Whether you switch to a new CMS, change your structure, expand internationally or merge several sites: we ensure that your findability is maintained and, where possible, improved.
We identify risks, create a migration plan, work with developers and monitor closely before, during and after going live. This prevents loss of rankings and ensures a smooth transition to a better-performing website.

Training

For teams that want to increase their knowledge, we offer training courses that match each stage of the SEO level within your organisation. From an accessible SEO basic training to in-depth sessions on AI-SEO, content optimisation or technical SEO.

We deliver our training courses in-company or online and tailor the content to your goals, questions and practical examples. Not theoretical or complicated, but concrete, clear and directly applicable. Afterwards, your team will know exactly what they can do to structurally improve the visibility of your organisation.

How we work

We start by understanding your organisation, goals and market. Then we analyse where the opportunities lie and build a strategy that fits your growth plan. We communicate personally and transparently. No complicated reports, but clear insights, periodic updates and concrete actions that help you move forward immediately. You always know what we do, why we do it and what it delivers.

We test, measure and improve continuously and onderbuilt. We work as a partner, not a supplier. We think along, ask critical questions and seize opportunities as soon as we see them. This is how we build step by step on growth that lasts.

The team behind Onder

Our team consists of technical specialists, content writers, strategists, AI-SEO experts and CRO consultants. Different areas of expertise that reinforce each other, with the same conviction: good SEO requires quality, clarity and collaboration.
We have grown in recent years: new disciplines, new specialists and new clients, but the same culture. Down-to-earth, committed and focused on results.
At our office, we work together daily on projects for organisations across the Netherlands, from small teams to fast-growing companies.

Working together for growth

Whether you are looking for full onder support or want to work with your team on SEO: at Onder you will get an approach that suits your situation. With realistic expectations, clear choices and a strategy that moves with the search behaviour of today and tomorrow.
Schedule a no-obligation consultation. We are happy to think with you.