Digital and creative solutions for your business

We develop websites and online shops which transform visitors into customers and put you on top of the search results.

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+49 211 542 230 47


Web Development

Planning, design and development. We guide you through the entire process of developing your website.

Webshops &

"Scalable web shops and e-commerce solutions tailored to your individual requirements."


Regular search engine optimization - we help you stay in the top of search results.

Hosting and website maintenance

Blazing fast page load and daily optimization help your website to be successful.

Marin Siekmann Porträt

Marvin Siekmann

Web Developer

Are you chasing big goals? We'll help you achieve them.

Hi, I am Marvin Siekmann, founder and web developer here at ada interactive.

Your website is the key to your company's digital strategy. Unfortunately, however, we see often that companies fail with their marketing activities because their website is outdated and/or confusing and does not effectively acquire new customers. That's where we come in. We create perfectly designed, easy to use websites and online shops that generate new customers and higher sales for you around the clock. Take a look at our Projects to see what results we have already achieved for our customers. If you would like to discuss how we can help you achieve your business goals, you can contact us via our chat, contact form or by phone.

Marvin Siekmann

Our Projects

Some of our recent website and e-commerce projects

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Take Memories Travel Design

Take Memories Travel Design is a tour operator for worldwide, individual luxury travel. For Take Memories we completely redesigned the existing, poorly functioning website. A new design, clear user guidance and a strong focus on conversion optimization were the key success factors for this project.

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Greenville Vacation Rentals

Greenville Vacation Rentals offers 5 vacation homes in Greenville, South Carolina. In the beginning bookings were mainly generated via the platform AirB'n'B. With the new website, potential guests are able to inform themselves about each of the individual holiday homes and, if necessary, make direct enquiries about rentals.

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Crossfit Düsseldorf

Crossfit Düsseldorf is a Crossfit box in the heart of Dusseldorf, which is specialized in functional training and was one of the first Crossfit gyms ever in Germany. As the existing website was getting very old and did not work properly on mobile devices, we were assigned with a complete relaunch. Since the relaunch and some SEO measures, the website is ranked number 1 on Google for the relevant keywords.

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Süß und Clever online shop

Süß und Clever is a start-up business founded in 2016 that sells organic food in organic packaging. Within the scope of a maintenance contract we support the team of Süß und Clever with the daily maintenance of your website. We take care of technical problems, carry out daily backups and make sure that the online shop always works reliably.

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Patrick Schopa Coaching

For coach Patrick Schopa we were assigned with the entire conception and implementation of a new website. The final result with a contemporary, responsive design ideally presents Patrick Schopa's diverse coaching offer and regularly converts website visitors into new clients.

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That's what our customers say:

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