At Provrex, I wasn’t just building games—I was shaping VR experiences that make a real impact, especially in education and training. I took on multiple roles, switching between Lead Developer and Team Manager. Whether it was hands-on coding, crafting creative concepts, or guiding my team through tight deadlines, I was in it all the way.
I worked closely with schools and businesses to translate complex training scenarios into interactive VR worlds that are fun, accessible, and super intuitive to use. My focus was always making sure that even non-gamers could jump in and just get it.
Projects
Programming
Infra Trainer
Client: Prima Personeel
Role: Software Engineer & Project Manager
Details: Infra Trainer is a VR training application where the player learns about different concepts in construction. The player learns how to dig a cunet, how to guide a excavator and to make a CLIC notification. The player can explore the environment and learn about different facts and trivia.
Experience: Infra Trainer was my first project both as freshly graduated programmer and project manager. I managed client contacts and planned sprints to secure progress. During this project i started by myself but slowly grew a small team that helped me with programming, modeling and level design.
HTV Proceduretrainer
Client: Landstede Harderwijk
Role: Software Engineer & Project Manager
Details: HTV Proceduretrainer is an advanced VR training application where the player verbally handles different enforcement procedures. such as:
- writing tickets and addressing offenders in multiple different settings
- shielding an arrest
Experience: During the development of HTV Proceduretrainer i created a framework where you can create conversations based on text and keywords. Players need to really talk to offenders on which they respond depending on what has been said.
KMAR Proceduretrainer
Client: Landstede Harderwijk
Role: Project Manager
Details: KMAR Proceduretrainer is a continuation of the HTV trainer. The player now needs to verbally handle different potentially threatening situations in front of a royal palace.
Experience: This project was my first chance at exclusively manage a project without having an active development role. I teached my team how the existing framework works and planned sprints and reviews to ensure the planning.
Communicationtrainer
Client: Landstede Harderwijk
Role: Project Manager
Details: Communicationtrainer is a continuation of the HTV trainer. Instead of handling in enforcement situations the player learns how to communicate with patients within a healthcare setting.
Jet Engine Explosive Viewer
Client: ROCvA
Role: Lead Software Engineer
Details: Jet Engine Explosive Viewer is a VR application where the player can literally pull apart a jet engine to learn about all the different parts inside.
Experience: to gain the attention of a client i was asked to create a POC for what is now known as the Jet Engine Explosive Viewer. I finished the POC in a week and made it work on the (now deprecated) Oculus GO. After seeing the POC the client wanted to continue investing in the application which a colleague of mine continued with.
Reanimation Trainer
Client: Landstede Harderwijk
Role: Project Manager
Details: Reanimation Trainer learns the player how to reanimate a person in Mixed Reality VR.
Experience: Reanimation Trainer was an assignment for an intern at Landstede. The client asked me to be the project manager and internship coach. After the internship was finished i added extra functionalities to the application like mixed reality support.
Ondermijning
Client: Scherp in Veiligheid
Role: Project Manager
Details: Step into the world of a detective and find cases of undermining in a shopping street. Question bystanders and find clues on the streets to determine what is going on and who is the wrongdoer.
Veva/HTV/BP Experiences
Client: Vista College
Role: Project Manager
Details: Veva/HTV/BP Experiences are a set of 3 VR experiences that can be used for open days and education fairs. They all give a small introduction to the three different professions and are used to attract new students.
Refugee Experience
Client: Gemeente Berg en Dal
Role: Lead Software Engineer & Project Manager
Details: Experience in VR the life and journey of Ahmed who is fleeing from Syria to the Netherlands. See his obstacles and insecurities and get to know the difficulties included with the dangerous trip.
Experience: The big challenge of this project was making a cinematic experience in VR. The player is only watching while the world is playing a story. We made hefty use of Motion Capture and i gained new experience with script writing, cinematics and motion capture.
ZHKH
Client: Landstede Harderwijk
Role: Project Manager
Details: Practise first aid on the battlefield and help your colleague with different situations like amputation, stabilizing and other healthcare.
Experience: ZHKH is a project that was long stuck in development hell for well over a year before i was put on the project. When i took over i assured strong communication with the client, created feasible deadlines and succeeded in finishing the project within another half a year.
AAW
Client: Landstede Harderwijk
Role: Project Manager
Details: Practise Ammunition Awareness by being put into different situations where ammunition needs to be found and marked with the correct procedure.
Flight Crew Trainer
Client: ROCvA
Role: Project Manager
Details: Learn the ropes of a flight crew attendant and use the correct procedure to solve a multitude of problems, like sudden decompression and different fires.
Weerbaarheid
Client: Vista College
Role: Project Manager
Details: You see a cashier getting scolded at by a frustrated person. Identify his behavior and verbally act to defuse the situation. Take breathing lessons in between and learn how to succesfully handle a verbal situation.
Koen Drenthe Portfolio 2026 