Companies you'll love to work for


Amsterdam, Netherlands · Amsterdam-Noord, Amsterdam, Netherlands


Health · Software


201-1000 employees


Series B

founded in


Castor is an international health-tech company founded by CEO Derk Arts, MD, Ph.D. Their cloud-based clinical data platform simplifies the entire clinical trial process, from recruitment to analysis, for researchers worldwide. More than 50,000 researchers across 90 countries are using Castor to supercharge their research. Castor’s platform has supported more than 4,000 commercial and academic studies that cover a broad range of therapeutic areas including diabetes, cardiovascular disease, rare diseases, infectious diseases, and oncology. Researchers on the platform generate vast amounts of data from traditional and remote trials, and Castor recently reached milestones of 180,000,000 data points and 2,000,000 enrolled patients. Castor’s goal is to make the world’s research data reusable, enabling AI-driven clinical trials, and ultimately creating a future in which they maximize the impact of data through reuse.

Something looks off?
Open jobs at Castor

On-site & Remote