Tjeu Cox


Tjeu, the creative mind behind IT Factor. With a background in Organizational Sciences (MSc), he applies his knowledge daily in the legal profession.

In the beginning, it was a lot of trial and error. Now, IT Factor offers services that allow it to take any segment of law firm to the next level.

In summer, Tjeu can be found weekly on his board in Zandvoort or running like a spear around the Bosbaan in Amsterdam. Tjeu is an up-and-coming legal tech fanatic and can explain the sometimes complicated information conveyed in great detail.

Remco Visser IT Factor

Remco Visser


Remco, who seriously has an answer ready for every question. A true consultant who is only too happy to share his knowledge.

He graduated from VU University in Amsterdam with a Master’s degree in Finance. An optimist first class who does not shy away from a challenge.

Remco knows the “business intelligence” of a law firm like no other. He knows exactly what data to make insightful and how best to manage it.

Hobbies? Reading books about astronomy and science. He is also an avid soccer player and boxer.

Daan van den Donk

Data Scientist

Daan combines entrepreneurship with analytical skills and has a background in econometrics (MSc.). His experience in the business world at Deloitte, ABN Amro and Rabobank, among others, allows Daan to look beyond technology.

Since 2021, Daan has been involved with IT Factor, working together to help law firms gain more insight into their offices.

Daan can be found on his road bike or on the squash court. Competitive as he is, he also occasionally tries to win old timer rallies as a navigator.

Mannus Schomaker

Data scientist, doing PhD

In early 2020, Mannus started IT Factor with Tjeu and Remco during his Master’s in Computational Sciences. In the months that followed, Mannus received an offer to do a PhD in soft robotics. Of course, he couldn’t resist that offer…

And then you think that’s enough for Mannus right? Wrong… Besides his PhD, Mannus enjoys applying his computer skills at IT Factor to create the most advanced data analyses in the legal world 😉

Martijn Lesterhuis - IT Factor

Martijn Lesterhuis


Martijn is a partner at Venturis Consulting Group. At the beginning of 2023, IT Factor and Venturis Consulting Group entered into a partnership and the two companies also share an office in the A’dam Toren.

Martijn has a versatile background as a lawyer, strategy consultant at BCG, Managing Director of Van Doorne and several management positions in the corporate world.

With his extensive knowledge of the legal profession, he advises IT Factor not only on strategy but also on data analysis and consulting.

Gerard Tanja - IT Factor

Gerard Tanja


Gerard is the founder of Venturis Consulting Group and has obtained an LLM, PhD, and MBA.

Gerard worked at Clifford Chance LLP in various management roles. He was general director at the prestigious TMC ASSER Institute for International Law and was legal advisor to the Dutch Ministry of Foreign Affairs.

With 30 years of experience in the legal profession, IT Factor could not imagine a better advisor. Gerard advises IT Factor on strategy, business development, and large projects.

Our mission

Law firms are constantly looking for ways to improve their efficiency and deliver better results for their clients. One way they achieve this is by incorporating technology, especially IT and Microsoft solutions, into their operations. Consultants with expertise in this area play a vital role in helping law firms innovate and remain competitive in today’s fast-paced business environment.

IT Factor is up-to-date with the latest news on artificial intelligence, machine learning, data-driven decision making, cybersecurity and developments at Microsoft. The consultants at IT Factor support law firms with their innovation challenges and opportunities. With their enthusiasm and knowledge of the latest technology, they help offices improve efficiency, reduce costs and achieve better results for their clients.