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

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

Rowan Milwid

Head of Product

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

Frouke Karel, MSc

Product Owner Castor SMS

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

Lieke Helsper, MSc

Project Manager

MSc in Science & Innovation management.

Elena Kochova, MD

Customer Success Specialist

Supports our customers and translates customer needs into viable solutions.

Rosalinde (Roos) Konings

Academic Sales Manager

Passionate about improving healthcare by using smart technology.

Floris Morang

Account Manager

Technology and research fanatic turned account manager that wants to connect customers with our awesome product.

Ilse Damsma

Product Owner Castor EDC

Medical student turned product owner, with an affinity for UX and UI. Supports the development of Castor EDC. ... read more

Marta Rodrigues Ornelas Mauricio

QA Tester

Bug hunter! As a Software Tester, Marta makes sure that everything has high-quality standards and works perfectly for ... read more

Eric Stonehewer

Talent Acquisition Partner and Employer Branding Specialist

Passionate about sharing authentic stories which truly inform others of Castor's awesome culture and vision. Inspiring new talent ... read more

Sabrina Edinger, MSc

Developer & Product Owner

Developer with a background in Medical Anthropology and Sociology, passionate about improving the medical research infrastructure and delivering ... read more

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

Matthew Steinfort

Finance Lead

Open-minded generalist accountant with a passion for integrating accounting and finance with technological systems to scale growth.

Nick Groenen

Site Reliability Engineer

Nick keeps watch over Castor's systems and infrastructure, helping the platform run smoothly to ensure the availability and ... read more

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

Technical Customer Success Specialist

Jolien has a MSc degree in Healthcare Management and Medical Informatics. She assists customers with resolving complex, technical ... 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

Design Systems and Accessibility Lead

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!

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.