Derk Arts, PhD, MD

Founder, CEO

Epidemiologist and founder of Castor. Derk left his medical career in favor of being full time CEO at ... read more

Sebastiaan Knijnenburg, PhD


Medical informatician overseeing all things technical at Castor. Joined Castor as Engineer #1 after his PhD in Medical ... read more

Rob Konterman, MSc


Ex-Consultant of The Boston Consulting Group (BCG) responsible for accelerating growth. To ensure further acceleration of the growth of ... read more

Rowan Milwid

Head of Product

Ensures maximum value for our customers through innovative and user focused product management.

John Ambrose, Esq

Head of Marketing

Hip hop attorney turned healthcare marketeer, I am passionate about growing Castor and connecting with thousands of researchers across ... read more

Frouke Karel, MSc

Product Owner Castor SMS

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

Sabrina Edinger, MSc

Full Stack Developer

Full stack developer with a background in Medical Anthropology.

Lieke Helsper, MSc

Project Manager

MSc in Science & Innovation management.

Caroline Cabezas, LL.M, CIPP/E

Legal Counsel and Privacy Officer

Passionate about law, privacy and optimising the delivery of legal services to the organisation to ensure commercial growth. ... read more

Elena Kochova, MD

Customer Success Specialist

Supports our customers and translates customer needs into viable solutions.

Kim Rosseneu

Office Manager | Executive Assistant

Keeps things going at Castor!

Sachin Yadav

Quality Assurance

Makes sure all Castor releases are top-notch!

Martijn Kersloot, BSc

PhD Researcher

Focuses on creating a scalable solution that will aid in the standardization of medical research data. Martijn is ... read more

Gaurav Jain, B.Tech


Gaurav is an expert on frontend technologies specializing in Sencha ExtJS. Gaurav works on developing different features and ... read more

André Johnson


André is a developer from Finland who joined Castor.

Tanu Jain, MSc


Tanu is a Full Stack web developer at Castor. Her role is to develop cool features in CastorSMS. ... read more

Patrick Martin, BSc

Medior Software Engineer

Patrick is a software engineer specialized in web development.

Sigrid van Rooijen, MSc

Business Development Representative

International oriented and passionate about improving research quality.

Ben Driesen, MSc

Lead Quality Assurance Engineer

Ensures that users get a high quality product without bugs.

Eveliese Luiting

Head of Talent

Passionate about happy people. Focusing on talent acquisition, talent development and culture.

Taru Saares, M.A.

Talent Acquisition and People Operations Specialist

Passionate about people, eager to help both future and current Castorians!

Himanshu Pant, MBA

Marketing Manager

Enthusiastic marketer with a goal to connect users to relevant products or services that solves or simplifies their ... read more

Chris Pattison, M.A.

Product Design Manager

SaaS design expert bringing usability and design thinking to Castor.

Roxana Cristian, MSc.

Senior Software Engineer

Passionate about technology and an advocate for comprehensible and maintainable code.

Jolien Lam, MSc

Support Intern

Jolien has a MSc degree in Healthcare Management and is currently performing her Master's thesis in Medical Informatics ... read more

Tonya Khodzhaeva, MA

At Castor Tonya works closely with customers and helps them to get the most out of the platform ... read more

Ross Tuck

Principal Engineer

Developer, Speaker & Coach.> Ross helps the engineering side of Castor run smoothly today and makes sure it stays that ... read more

Gabriel Pop

Head of Engineering

Here to build and grow an awesome Software Engineering team, support best practices, and to put software and ... read more

Jaimie Corby

Senior User Experience Researcher

Uncovering and understanding user insights to share with the Castor team, ensuring product decisions are centered around our ... read more

Damien Senger

Product Designer

Crafts inclusive and accessible top-notch experiences for Castor products with a focus on user needs and collaboration with ... read more

Volker Dusch, MSc

Senior Backend Engineer & Team Lead

Volker helps Castor realize its vision by aligning engineering with product needs, building a reliable and delightful product ... read more

Robert Mohunlol

IT Support

Enjoys to tinkering with both hardware and software, always eager to help others!

Ferdinand Lie

Finance Manager

Passionate about Finance and Scale-ups, making sure all the numbers make sense.

Bart Torensma, PhD(c), MSc

International Sales & Clinical Epidemiologist

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

Rob de Vries, PhD, MD


Co-founder and advisor since Castor’s inception.