Senior People Business Partner

Who is Castor?

Who is Castor?

Castor is a leading cloud-based clinical data platform working with some of the world’s largest pharmaceutical and medical device companies, as well as renowned academic and research institutes like the World Health Organization.

We simplify the clinical trial process, from recruitment to analysis, with user-friendly, patient-centric technology. Our mission is to bring medical research into the digital age. Why? Because medical research is still largely run using free-text, paper, and legacy technology.

Our self-service platform enables our users to run remote (decentralized), device-enabled, patient-centric trials. By helping our users capture high-quality data and making it machine-readable, we are fundamentally changing the flawed evidence-based medicine process.

The Role

What you’ll do

As a Senior People Business Partner, you will lead and support all aspects of the People function for our US employees whilst enabling the Global People team to do the same. Partnering with our People Partner in EMEA and Castor’s people leaders on employment relations, performance, and reward, employee development, engagement, and enablement.

  • Provide decisive, pragmatic, and commercially focussed People consultancy to people leaders;

  • Advise on United States specific employment legislation and best practice;

  • Support performance management (disciplinary) processes and lead workplace investigations for formal complaints/grievances to ensure procedural fairness;

  • Coach and support people leaders to increase their people leadership capability;

  • Drive Castor’s feedback and performance culture by proactively improving, promoting and supporting the annual Alignment Cycle;

  • Provide input into organizational employment relations activity (e.g. employment contracts, policies and processes);

  • Provide input into organizational performance and reward activity (e.g. compensation and benefits);

  • Own and drive company-wide People projects and initiatives in line with the broader People strategy;

  • Identify workplace and workforce trends and make recommendations for action with the aim to maintain an average employee engagement score of 8.0 or higher;

What you’ll bring

  • 5+ years experience as an HR Business Partner within the United States employment environment;

  • Experience partnering with a large variety of stakeholders and being able to successfully deliver larger People projects in a complex environment;

  • Passion for innovative HR and being able to bring new ideas and industry developments to Castor;

  • Engaging presentation skills; comfortable leading training and discussions with internal stakeholders;

  • Strong relationship and networking skills;

  • Fluent professional communication in English;

What you'll get

At Castor we truly live and breathe our core values, believing we can achieve anything with a healthy and happy team.' With this in mind, we offer the following benefits:

  • A flexible and remote working opportunity

  • A competitive salary and a guaranteed 'happy holidays' bonus

  • Investing in our talent with a strong Employee Stock Option Plan

  • 30 days of PTO (including 8 national holidays and flexible sick days)

  • Interested in ‘lifelong learning’? You’ll love using our development and training budget

  • A 401K savings plan with competitive employer contributions

  • A great health benefit and insurances package

  • Flexible approach to working - nobody is tracking your time

  • A MacBook or Dell laptop, we’re a tech start-up after all ;)

  • Like to feel zen? You’ll love our company subscription to Calm for meditation and yoga

Want to know more? Check out the role profile for some further insights or apply now!

Castor continues to grow as an Equal Opportunities Employer. We strongly encourage applications from women, people of colour, and people from the LGBTQ(+) community. In your application, please feel free to share the pronouns you use (for example, she/her/hers, he/him/his, they/them/theirs, etc.).

Our Interview Process


Fill out a short application on our careers website.

Telephone Call
Telephone Call

If your application is successful, we’ll invite you to an intitial call with a member of our talent team.

Manager interview
Manager interview

Great news! You’re invited to meet the hiring team.

Interview Day
Interview Day

Now we’ve got even better acquanted, we’d like to invite you to a final stage interview day.


Congratulations! We’re making you a formal offer to join as our next Castorian!

Meet Your Future Colleagues

Yulia Bondar
Yulia Bondar
Senior Talent Acquisition Specialist
Eric Carroll-Stonehewer
Eric Carroll-Stonehewer
Talent Team Lead