Web Performance & Growth Engineering Services

Faster Websites.
Better Data.
More Conversions.

Senior engineers improve page speed, fix analytics and tracking, and build the tests your marketing team needs to learn what works.

Image

Growth needs engineering

Your Website Should
Help You Learn.

A slow site, unreliable tracking or an experiment that takes weeks to launch makes growth harder than it needs to be.

We work with marketing, product and engineering teams to fix the technical layer behind acquisition and conversion.

Where we help

Make the Website
Work Harder.

Bring performance, measurement and experimentation together with one senior engineering team.

Faster Experiences

Faster Experiences

Improve Core Web Vitals, remove frontend bottlenecks and keep third-party scripts from slowing down the pages that matter.

Trustworthy Measurement

Trustworthy Measurement

Set up GTM, GA4, conversion events, consent and ad-platform tracking so your team can trust what the numbers mean.

Better Experiments

Better Experiments

Build landing pages, feature flags and A/B tests that are fast to launch, correctly measured and safe to ship.

One technical partner

From the Browser.
To the Data.

We trace a customer journey from the page they land on to the event sent to analytics, the signal passed to an ad platform and the conversion recorded in your systems.

That makes it easier to find broken tracking, slow pages and drop-offs without passing the problem between three vendors.

A Makers’ Den website illustration

Selected work

Websites Built
To Perform.

See how we have helped teams modernize their websites, improve delivery and give content teams more control.

Top Software Agencies 2026 in Germany

clutch-logo

5.0 stars

Image

How we work

Measure First.
Then Improve.

We start with the journeys and conversions that matter. Then we audit performance, analytics and tracking, fix the highest-impact problems and ship changes in small releases.

AI agents help us inspect implementations, create variants and automate repetitive checks. Senior engineers review every change before release.

Client Feedback

Trusted by Teams
That Care About Results.

Our clients rely on senior Makers to solve technical problems, communicate clearly and keep important work moving.

Logo 1
Logo 2
Logo 3
Logo 4
Logo 5
Logo 6
Logo 7
Logo 8
Logo 9
Logo 10
Logo 11
Logo 12
Logo 13
Logo 14
Logo 15
Logo 16
Logo 17
Logo 18
Logo 19
Logo 20
Logo 1
Logo 2
Logo 3
Logo 4
Logo 5
Logo 6
Logo 7
Logo 8
Logo 9
Logo 10
Logo 11
Logo 12
Logo 13
Logo 14
Logo 15
Logo 16
Logo 17
Logo 18
Logo 19
Logo 20

Testimonials

Testimonial Illustration

Makers' Den delivered a self-managing team who created our new website to serve as the marketing spearhead for our online campaigns. What really struck me positively is that we could directly talk to the production team and get changes implemented on the turn of a dime without going through extra account managers.

Nick Roberts
Darius Seyed Vousoghi
Tiago Faria
Renée-Jeanne Ruel
Olivier Ramier
Julian Slosse
Stephane Roux
Marcin Jancewicz
Marc Allen
Maarten Quartier
Roosa Nieminen
Johannes Puirava
Dr. Steffen Klein
Benjamin Zengler
Martin Harder
Till Riffert
Dean Taylor
Stefan de Lange
Nick Roberts
Darius Seyed Vousoghi
Tiago Faria
Renée-Jeanne Ruel
Olivier Ramier
Julian Slosse
Stephane Roux
Marcin Jancewicz
Marc Allen
Maarten Quartier
Roosa Nieminen
Johannes Puirava
Dr. Steffen Klein
Benjamin Zengler
Martin Harder
Till Riffert
Dean Taylor
Stefan de Lange
Nick Roberts
Darius Seyed Vousoghi
Tiago Faria
Renée-Jeanne Ruel
Olivier Ramier
Julian Slosse
Stephane Roux
Marcin Jancewicz
Marc Allen
Maarten Quartier
Roosa Nieminen
Johannes Puirava
Dr. Steffen Klein
Benjamin Zengler
Martin Harder
Till Riffert
Dean Taylor
Stefan de Lange
Nick Roberts
Darius Seyed Vousoghi
Tiago Faria
Renée-Jeanne Ruel
Olivier Ramier
Julian Slosse
Stephane Roux
Marcin Jancewicz
Marc Allen
Maarten Quartier
Roosa Nieminen
Johannes Puirava
Dr. Steffen Klein
Benjamin Zengler
Martin Harder
Till Riffert
Dean Taylor
Stefan de Lange
Nick Roberts
Darius Seyed Vousoghi
Tiago Faria
Renée-Jeanne Ruel
Olivier Ramier
Julian Slosse
Stephane Roux
Marcin Jancewicz
Marc Allen
Maarten Quartier
Roosa Nieminen
Johannes Puirava
Dr. Steffen Klein
Benjamin Zengler
Martin Harder
Till Riffert
Dean Taylor
Stefan de Lange
Maarten Quartier
Marketing Director at Skedify
Company badge

Growth Engineering FAQs

What to Know
Before We Start.

What does web growth engineering include?

It brings together website performance, analytics, tracking, experimentation and conversion-focused development. We work on the technical systems behind growth, from Core Web Vitals and landing pages to GTM, GA4, ad-platform signals and A/B tests.

Can you fix an existing GA4 or Google Tag Manager setup?

Yes. We can audit the current implementation, agree which events and conversions matter, repair the data layer and tags, and test the complete path from a user action to the reporting destination.

Can you improve PageSpeed without rebuilding our website?

Often, yes. We first identify what is slowing down real users. The fix may involve images, fonts, rendering, JavaScript, third-party tags or infrastructure. If the current platform is the main limitation, we will explain what can be improved in place and when a larger change is justified.

Do you implement A/B tests?

Yes. We can implement variants, experiment assignment, event tracking and quality checks using your existing testing platform or a suitable feature-flag setup. We can also help turn an idea into a test that can be measured clearly.

Do you manage advertising campaigns?

No. We focus on the engineering behind measurement and conversion. That includes pixels, conversion APIs, consent-aware tracking, landing pages, product feeds and attribution plumbing. We work alongside your internal marketing team or media agency.

How do AI agents help with growth engineering?

We use AI agents to inspect code and tracking implementations, create and compare variants, generate repetitive test cases and automate checks. Senior engineers decide what to change, verify the results and remain responsible for what ships.

I want to keep my idea confidential. Will you sign an NDA with me?

Yes, we sign an NDA (Non-Disclosure Agreement) always when a client wants it. We can do it at the very beginning before we discuss your project's details, or at another stage of the process - it's up to you.

Do I own the intellectual property rights of my application?

Yes, you are the owner of Intellectual Property rights at all times.

Where is your development team located?

We are fully remote. So while we were founded and are still based in Berlin, most developers will be remote from a central European location.

What is the pricing model?

You work with us on a Time & Materials basis. The total cost depends on the actual time the team spends on the development. You are in charge of the project’s scope and set priorities for the development team.

Time & Materials allows flexibility for you to set the direction of development depending on the users’ feedback, market situation, or opportunities that arise during the development.

For more about how we create estimates read how to estimate software projects .

What would my development team look like?

We adjust the team depending on your needs. Our speciality is low overhead teams, where every member is contributing concretely towards customer facing features. That means everyone is either doing development or design.

Roles like Project Manager, Business Analyst and QA are responsibilities which are shouldered by our business oriented developers or designers.

You may take the role of a Product Owner, making decisions on priority and scope.

Can you work as an amendment to our in-house team?

Yes. We can adapt to your tools and processes. I.e. fully integrate into your existing team.

How does the company ensure code quality and maintainability?

We follow best practices, perform code reviews, implement automated testing and continuous integration to ensure code quality and maintainability. All projects are not equal though and the level of automated QA will be determined on your need for quick feedback from the market.

Can you hand the code over to another team?

Yes. We create easily understandable and maintainable code using well known frameworks which don’t require niche knowledge.

The runtime environments we can set up in your ownership from the get-go.

What is the experience level of my team?

Every team has a partner involved in the project. Our developers have a proven track record of outsized throughput. Our culture is one of delivering features every day. That's why we prefer senior developers, but not seniors that are from slow moving enterprise environments.

How am I kept up-to-date of development?

We have fixed length iterations (usually 1 week), at the end of which you will be demoed the current progress. You will have access to team members through Slack, email and video calls and our regular meetings. In addition to this you will have access to our project management tools (Jira or Asana), which we update daily.

Why hire us?

We love what we do and only employ people with a similar mindset. You ship faster by working with a small team where each developer is a focused on your business goals. With us you get direct access to everyone. This keeps overhead low and output high.

You are in control. We offer full transparency of progress and potential problems. We keep you informed and present options, but you make the decisions.

We value our client relationships and their product visions. Meet with us to see if we share the same conviction. We might be a good fit.

Contact illustration

Fix What Slows
Growth Down.

Discuss your growth stack