Digital Marketing Manager

Who is Castor?



We believe that faster, more diverse clinical trials help extend the human health span and provide a greater return on investment.

We strive to improve the clinical trial experience for patients, sites and sponsors, using technology to accelerate every step of the clinical trial journey.

Our modular clinical trial platform enables the capture and re-use of research data from anywhere, anytime and helps optimize each activity in the clinical trial journey by reducing human effort with technology. From recruitment to monitoring, we help make it easier to design and deploy trials, enroll and engage patients, collect data and analyze results.

Next to being very purpose-driven, we are proud of our caring company culture. We follow our values diligently and take the well-being of each Castorian seriously. Sounds like something for you? Read on!


The main focus of the role

At Castor, we are committed to a world with faster, smarter, medical research. Our B2B cloud-based software solutions are revolutionizing data capture and management  for clinical researchers worldwide. You have found yourself a company with a true purpose. 

As the Digital Marketing Manager, you will oversee and enhance Castor's digital marketing channels. Your primary goal will be to drive growth and maximize ROI through strategic digital campaigns aligned with our product and segment strategies. This role demands a strategic thinker who is passionate about data-driven paid media campaigns and has a proven track record of building and scaling B2B businesses.

What you’ll be doing

  • Digital Marketing Strategy: Create comprehensive digital marketing plans that align with business objectives and drive measurable results.
  • Relentless Optimizations: Continuously test, analyze, and optimize campaigns to improve performance and achieve KPIs.
  • Data-Driven Paid Media: Manage and optimize paid media campaigns across various platforms (Google Ads, LinkedIn etc.) using data-driven insights to maximize ROI.
  • Drive and Measure ROI: Implement and manage systems to track and report on campaign performance, making data-backed recommendations to drive MQLs and influence sales pipeline. 
  • Ad Content Strategy and Management:  Create compelling  ads and distribute to ensure alignment with marketing goals and brand messaging.
  • SEO and SEM Management: Develop and implement strategies to improve organic search rankings and drive paid search traffic.
  • Email Marketing: Design and execute email marketing campaigns to nurture leads and drive conversions.
  • Analytics and Reporting: Use analytics tools (Google Analytics, Salesforce Dashboards, etc.) to track, report, and analyze website and campaign performance.
  • Budget Management: Manage the digital marketing budget, ensuring efficient allocation of resources to maximize return on investment.
  • Staying Current: Keep up-to-date with the latest digital marketing trends, tools, and best practices


What you’ll bring 

  • 5+ years experience as Digital Marketing Lead  or similar
  • Demonstrated experience in B2B media  buying,  lead generation, and acquisition strategies
  • Experience in cross-channel digital tactics - SEO/SEM, Google Analytics, Google Ads, Email
  • Technical Knowledge - a deep understanding of software concepts & terminology (life sciences an advantage)
  • A passion for innovation - constantly looking for new  ways to reach and engage our target audience.
  • High Standards - a penchant to always raise the bar and find ways to get faster or better in your work.
  • An extreme sense of ownership, initiative  and a self-starter attitude  to pursue campaign success.
  • Results-Driven - ambitious goals and a hunger to take ownership  and drive significant business impact.
  • Collaborative Skills -  the skill to foster a cohesive & productive work environment in your own team & others.
  • Effective Communication -  an open, honest communication style that builds trust in customers & colleagues.
  • Customer Focus - an empathy towards customers & an audience focus  when building content & campaigns.
  • Data-Driven - an analytical mindset for decision making processes  & looking to data for deeper insights.
  • English Proficiency - an excellent command of written & spoken English with native-level fluency. 

How Castor takes care of you

At Castor we truly live and breathe one of our core values, believing we can achieve anything with a healthy and happy team. Our benefits reflect this:

  • Guaranteed ‘happy holidays’ bonus  
  • Employee Stock Option Plan 
  • Learning & Development Budget to support your growth
  • Unlimited annual leave 
  • A fully remote role, with support for your home office set-up
  • A flexible working schedule: nobody is tracking your time except you, we focus on output and delivery
  • A great work-life balance
  • Quarterly downtime weeks, access to OpenUp, well-being workshops, sleeping courses, virtual company events and celebrations
  • Annual company retreats in person 🌴


We are a remote-first company. At Castor,  we value flexibility and believe that the best talents can work anywhere in the world. From flexibility improvements to productivity growth, we want to make sure you are happy, healthy, and productive while working from home.


Every Castorian counts. We celebrate you for who you are. We build products to make clinical research accessible to the world and a company where everyone, anywhere, is welcome. It does not matter where you are from, where you are based, or what your gender, age, or sexual orientation is.

Our remote-first setup is for your family, your work-life balance, your mental health, and your right to be your most authentic self. You are celebrated for who you are, for all the differences and quirks that define you. We want your unique voice to be heard and succeed together as a happy and healthy team!


Castor continues to grow as an Equal Opportunities Employer. We strongly encourage applications from women, people of color, and people from the LGBTQ(+) community. Please feel free to share the pronouns you use (for example she/her/hers, he/her/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