Geert van der Cruijsen

Geert has a passion for technology and gadgets and that’s why he started building mobile apps several years ago. Meet Geert van der Cruijsen, trainer at Xebia Academy. Geert is a Microsoft trainer and trains on behalf of Xebia courses like Native Mobile Apps with Xamarin Across All Platforms.

In his career spanning over 10 years in IT Geert has worked as a consultant and technical architect on several large business apps and projects with clients like Nokia, KPN & Heineken.

Next, to his expertise in Mobile application development, Geert also has a lot of experience in ALM regarding Mobile application development, standardizing and streamlining the development of apps for enterprises. 

Geert is also an active user, speaker, and blogger in the Microsoft community. He has spoken at events like Microsoft Techdays and local meetups such as .NET Mobile Developers group. Geert writes and speaks about everything related to mobile technology and his interests both professional and personal. 

In his spare time, Geert likes to build apps for the Windows platform such as Game Streams, the most downloaded and best rated Twitch client for the Windows platform. When Geert is not sitting behind his laptop Geert likes to travel the world with his wife Patty and daughter Lauren, cook food from the places he has visited and taste different beers to increase his Untappd score. 
Geert is also an active user, speaker, and blogger in the Microsoft community. He has spoken at events like Microsoft Techdays and local meetups such as .NET Mobile Developers group. Geert writes and speaks about everything related to mobile technology and his interests both professional and personal. 

In his spare time, Geert likes to build apps for the Windows platform such as Game Streams, the most downloaded and best rated Twitch client for the Windows platform. When Geert is not sitting behind his laptop Geert likes to travel the world with his wife Patty and daughter Lauren, cook food from the places he has visited and taste different beers to increase his Untappd score. 

Upcoming courses

SQL for Data Analysis

Learn to use SQL querying your data to unveil invaluable insights.

Lucy Sheppard 

2 days
In Person

Next:

16 – 16 Jan, 2026

From:

€1360

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Data Science Bootcamp

Transform into a certified Data Scientist in just 12 weeks. This boot camp will kick-start your Data Science career with Python.

Juan Venegas

Data Science
Python
11 days
Virtual

Next:

19 Jan, 2026

From:

€2975

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Python for Data Analysis

Learn how to code in Python and perform data analysis with our Python for Data Analysis training.

Data Science
Python
2 days
In Person

Next:

19 – 20 Jan, 2026

From:

€1425

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AI-Native Foundation

You’ve been told to “use AI.” But between hype, half-truths, and a flood of tools, it’s hard to know where to start. AI-Native Foundations cuts through the noise. In two immersive days, individuals gain the fluency, frameworks, and confidence to put AI to work. Not just in theory, but in the flow of the actual day-to-day.

Christianna Madson

AI for business
SAFe
2 days
In Person

Next:

19 – 20 Jan, 2026

From:

€1595

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Professional Scrum Product Owner (PSPO I)

In the Professional Scrum Product Owner (PSPO) training, you will learn strong Product Owner skills. Get your PSPO 1 certificate now!

Robbin Schuurman

Product Management
Product Owner
2 days
In Person

Next:

22 – 23 Jan, 2026

From:

€1625

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