Castor is created and maintained by an international team of Medical Research and IT enthusiasts – click on a profile to learn more about us.

Derk Arts
Founder, CEO

Epidemiologist and founder of Castor

Sebastiaan Knijnenburg

Medical informatics graduate who oversees all the technological development of Castor

Rob Konterman

Ex-Consultant of The Boston Consulting Group (BCG) responsible for accelerating growth

Lieke Helsper
Customer Success Manager

MSc in Science & Innovation management, keeps our customers happy

R&D Manager

Student Medical Informatics, develops tools to help customers make the best out of Castor

Legal Counsel & Compliance Officer

Legal Counsel & Data Protection Officer, responsible for Privacy & Data Protection Compliance at Castor EDC

Office Manager | Executive Assistant

Keeps things going at Castor!

Head of recruitment

Specialized recruiter helping Castor to select the right people for the job

Max Corbeau
Marketing Manager

Leading marketing efforts. Former Advisor at Undeveloped (Exit) and Marketing manager at RELX

Business Development Representative

International oriented and passionate about improving research quality.

International Sales & Clinical Epidemiologist

Bart gives Castor’s accounts abroad advice on epidemiological statistical questions

Frouke Karel
Product Owner Castor SMS

Enthusiastic health scientist who makes sure that Castor SMS meets all the user requirements

Business Developer

Serial Entrepreneur and Business Developer helping Castor EDC grow.


Developer specializing in PHP, MySQL, JavaScript, C, C++ and Java

Sabrina Edinger
Junior Full Stack Developer

Junior full stack developer with a background in Medical Anthropology

Senior Front End Developer

Sencha Ext JS specialist

Medior Software Engineer

Patrick is a software engineer specialized in web development.


Gaurav is an expert on frontend technologies specializing in Sencha ExtJS


Tanu has experience of working in startups as well as large corporations


Co-founder and advisor since Castor’s inception

Quality Assurance

Makes sure all Castor releases are top-notch!

Melissa Mark
Marketing, Sales, and Growth Intern

Environmental Sciences student. Responsible for marketing, sales, and growing the company globally

Growth and Development Intern

Kinesiology student. Responsible for growing Castor’s international presence.

Software Engineering Intern

Computer Science student. Responsible for fixing bugs and building new features.

Software Engineering Intern

Nanotechnology Engineering student. Responsible for new feature development and bug fixes.

Product Management Intern

Student in Industrial Engineering & Management. Responsible for overseeing sprints as well as product development.