Found by the people who matter — in every market you serve.

SEO Agency in Amsterdam

Search engine optimization (SEO) is a matter of trust: you hand the findability of your organisation to a partner whose work only shows months later. So you don’t want promises — you want an approach you can follow, and numbers you can check.

Marsmedia has been an SEO agency for organisations with complex innovation for twenty years — biotech, life sciences, medtech, sustainable tech, SaaS. Not as a separate service, but woven into how we think, write and build websites. Strategy, content, technology and measurement, in one hand.

And because people increasingly ask their questions to ChatGPT and other AI assistants, being findable there is simply part of the work now.

4.9 average on Google, 44+ reviews

Plan a call See our work
SEO agency Amsterdam — Marsmedia team at work
SEO agency Amsterdam — Marsmedia team at work
SEO agency Amsterdam — Marsmedia team at work
SEO agency Amsterdam — Marsmedia team at work
SEO agency Amsterdam — Marsmedia team at work
SEO agency Amsterdam — Marsmedia team at work
Analyst reviewing a website performance dashboard with SEO and traffic data
Analyst reviewing a website performance dashboard with SEO and traffic data
Analyst reviewing a website performance dashboard with SEO and traffic data
Analyst reviewing a website performance dashboard with SEO and traffic data

Why organisations bring in an SEO agency

Rarely because they don’t understand SEO. Usually because doing it well is continuous work — and half attention in this field returns nothing.

4.9 average on Google, 44+ reviews

logo solventa
Avantium logo
logo pyxis
Avantium RDS logo
logo refuels
logo brachyacademy
logo brachytherapy
logo azerion
logo companyinfo
logo fsa
logo lms
logo scribe
Confo logo
logo abvion
Performation logo
logo jii
logo waste
logo billygrace
Cabometyx logo
logo stampa
logo redevco
logo vua
logo adgoji
logo e-storage

Our SEO services, specifically

SEO strategy and keyword research

Every engagement starts with strategy: which questions does your audience ask, in which language, and which pages should be the answer? We ground that in data — volumes, difficulty, intent — rather than in gut feeling.

What you get: a concrete page agenda with priorities, where every page has a clear job and a reason.

SEO strategy and keyword research — Marsmedia

Content that ranks and convinces

We write and rewrite pages that serve two readers at once: the person looking for an answer, and the search engine deciding whether your page is that answer. In the language of the searcher — not in jargon nobody types.

Because we pick up your world quickly, the substance stays right. SEO content that puts off the engineer or the investor has, on balance, returned nothing.

SEO content that ranks and convinces — Marsmedia

Technical SEO

Crawlability, speed, structure, structured data — the layer underneath the content, where findability is won or lost before a single word is read.

Because we design and build websites ourselves, technical SEO isn’t a recommendations PDF here. We implement what we find.

Technical SEO — Marsmedia

Findable in AI

A growing share of questions gets answered outside Google — by ChatGPT, Claude and Perplexity. We make sure content and structure are readable and citable for those systems too. And that visibility has become measurable, with tools like Ahrefs Brand Radar — we set that measurement up for you.

Read more about that new discipline on our page about generative engine optimization.

Findable in AI search — Marsmedia
Marsmedia studio Amsterdam — SEO team at work
Analyst reviewing a website performance dashboard with SEO and traffic data

“SEO isn’t a department next to the website.
It’s how the website should be made.”

— Marsmedia

Nelson Eggermont, design and UX specialist at Mars

What working with us looks like

“In web design Amsterdam, I enjoy strategically shaping elements to draw visitors’ attention and instill trust in their brand’s professionalism. It’s fulfilling to help clients effectively communicate their products or services through visually appealing and user-friendly designs.”

Marsmedia

Emma Schrijver, Project & Marketing manager at Mars
Smiling man with glasses, a friendly Mars team member

Considering bringing in an SEO agency?

Three steps. Everyone knows what is needed, and when.

How we work

Not just a creative digital agency in Amsterdam.

Two overlapping speech bubbles icon symbolizing attentive listening to clients

We call first

Every enquiry starts with a phone call: is this a fit, can we genuinely add value? If not, we point you to someone better placed. If so, we plan a discovery session — the joint brainstorm where the real question surfaces: for which questions are you invisible today when you shouldn’t be?

Four alternating squares and circles icon symbolizing simplifying complexity

We simplify

Most websites carry the weight of old ideas: pages competing for each other’s keywords, structure that expanded over the years, content once written for an algorithm that no longer exists.

We strip back to what earns its place — for the reader and for the systems that decide whether they find you. Fewer pages that perform better beat more pages that get in each other’s way. That’s the hardest part of the craft, and exactly where twenty years count.

Raised hand with sparkle rays icon symbolizing effortless support

We measure until it works

A website is never finished — and with SEO that’s the whole point. We track positions, adjust on what the data shows, and report on what actually happens: impressions, positions, enquiries. Not on what was changed.

For the team that has to report internally on the investment, the story gets written in those months — not on delivery day.

Frequently asked questions