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

Rob Konterman, MSc


Ex-Consultant of The Boston Consulting Group (BCG) with an MSc in Computer Science. Rob came on board in 2015 ... 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

Frank Cesaro

Head of Global Sales

John Ambrose, Esq

Head of Marketing

Hip hop attorney turned healthcare marketeer. Passionate about growing Castor and connecting with thousands of researchers across the ... 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.

Sabrina Edinger, MSc

Full Stack Developer

Full stack developer with a background in Medical Anthropology.

Elena Kochova, MD

Customer Success Manager

Supports our customers and translates customer needs into viable solutions.

Floris Morang

Account Manager

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

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

Dualtagh Franklin

Account Executive, UK and Ireland

Client-orientated healthcare account executive, passionate about driving digital transformation through smart, innovative technology solutions across the ... 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!

Edwin Schreuder

People & Culture Manager

Passionate about creating a fulfilling and inspiring place to work for all our people at Castor. ... read more

Veroni Smidt-Verhulst

QISMS Coordinator

Specialist on quality and information security management. Making sure Castor stays ISO certified and that Castor's ... read more

Luis Cobucci

Software Engineer

Avanish Pandey

Quality Assurance Tester

Inclined towards thinking out of box, Avanish chose to be a QA engineer to make(break) things, ... read more

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

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

André Johnson


André is a developer from Finland who joined Castor.

Patrick Martin, BSc

Medior Software Engineer

Patrick is a software engineer specialized in web development.

Tanu Jain, MSc


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

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.

People & Operations Specialist

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

Chris Pattison, M.A.

Lead Product Designer

SaaS design expert bringing usability and design thinking to Castor.

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

Roxana Cristian, MSc.

Senior Software Engineer

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

Jolien Lam, MSc

Technical Success Specialist

Jolien is a medical informatician who assists customers with resolving complex, technical issues that require in depth knowledge ... read more

Tonya Khodzhaeva, MA

Customer Success Specialist

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

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

Engineering Manager

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

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.