The experts in digital transformation!

Magnetic Field is the consultancy and implementation company in the area of personalised marketing and conversion optimisation. Our objective is to boost revenue for organisations who are able to make a change. The only question is, will it be yours?


Paving the way to reach your audience with a correct ad, on the right device, at the right moment, for the right user.

A data-driven approach combined with user experience and consumer behaviour to improve websites and applications.

Unlocking data to generate insights and optimise performance through all channels. Enabling you to take the right decisions.

Is mobile not performing as well as you want it to be? Take advantage of our mobile expertise to increase profitability.


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About us

Magnetic Field is founded by Jeffrey Dorrestijn. Jeffrey works in the online industry for over 12 years. The last 8 years he worked for Google in Dublin, Beijing, Manila and Amsterdam. In his last role as Conversion Lead for the Netherlands, Jeffrey headed up the conversion specialists team for Google Amsterdam. He worked with brands like Footlocker, G-Star, Tommy Hilfiger, Peugeot,, NCOI and many more.

Why Magnetic Field? Organizations are spending a lot of time and money on attracting new clients. Every business want to create an environment where customers keep coming back and interesting prospects turn into new clients. This is what we call creating a ‘magnetic field’ around your organization.

How can you do this? We are specialised in Programmatic Marketing, Conversion Optimization, Measurement and Mobile. Programmatic Marketing enables to segment audiences and provide relevant messaging on the right device, at the right moment, for the right user based on behaviour. These insights are extremely relevant for the continuous improvement for websites and applications. Therefore Conversion Optimization is required to increase the relevancy for your audience. This will only work if everything is measured correctly. Measurement is the key to success! With Mobile traffic increasing rapidly and the performance still lagging behind, it requires special attention. Magnetic Field has the expertise to help you forward to the next level of digital. Want to know more? Reach out, we are happy to talk to you!

Our Team



Founder, Digital strategy, digital marketing, web analytics and conversions



Digital strategy, digital marketing, web analytics and conversions






Data scientist



SEO & content marketing specialist



Conversions & UX expert

Contact us

Do you have any questions, remarks or something else? Let us know. We make sure the coffee is ready!


Magnetic Field B.V.
Weteringschans 165
1017 XD Amsterdam (NL)

Phone: +31 20 223 1085