Open for applications

Internship R&D: Biological Fluids

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About the vacancy

R&D
Drug Development
Internship Master’s Degree (WO) Internship Part time 750 Leiden, South Holland, Netherlands

About Your Next Job

Are you looking for an exciting internship where you develop novel drug delivery systems? Join Johnson & Johnson in Leiden as an Intern! Enjoy a €750 monthly allowance, flexible working options, and hands-on experience in a global team.


About Your Next Colleagues

You will join the Biopharmaceutics team at Johnson & Johnson in Leiden, which is part of the Drug Product Development and Delivery department. Did you know Johnson & Johnson is a global healthcare leader focused on tackling complex medical challenges through innovation? Here, you will collaborate closely with experienced scientists from both Protein and Cell & Gene therapies organizations.

  • Innovative and dynamic work culture
  • Collaborative global team environment
  • Direct guidance from expert scientists

About Your Tasks and Responsibilities

As an Intern, you'll build static and flow models to simulate drug product formulations after administration. You will evaluate compatibility with biological fluids like human blood, serum, and plasma. Working alongside analytical teams, you will develop advanced tools to characterize drug interactions.

Your core responsibilities:

  • Developing models to mimic drug formulation behavior
  • Assessing drug interactions with human fluids
  • Supporting a predictive modeling framework

About Your Skills and Experience

To keep the laboratory running, it is important that you as an Intern meet the following requirements:

  • You are a Master student in a relevant field
  • You speak English fluently
  • You are available 40 hours per week
  • You are willing to work in Leiden
  • You have knowledge of biopharmaceutics

About Your Benefits


You are eligible to work in EU

We only accept applicants who are eligible to work in the EU


Contact person

Marjolein van Bommel

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At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured. A world where treatments are smarter, more innovative, less invasive, and solutions are personal. 

Johnson & Johnson Innovative Medicine, leading where medicine is going

Patients will always inform and inspire our science-based innovations, which continue to change and save lives. Applying rigorous science with compassion, we will continue to confidently address the most complex diseases of our time and unlock the potential medicines of tomorrow. From our sites in Leiden, Sassenheim and Breda we are continuously working to develop treatments, aspiring to find cures, pioneering the path from lab to life, and championing patients every step of the way. Our diverse portfolio spans multiple therapeutic areas in Oncology, Immunology, Neuroscience, Cardiovascular, Pulmonary Hypertension, and Retina.  

Johnson & Johnson MedTech, innovates at the intersection of biology and technology

Fueled by innovation at the intersection of biology and technology, we’re developing the next generation of smarter, less invasive, more personalized treatments. From advanced mapping and navigation to robotic assisted solutions, we are delivering care in the hardest to reach parts within the human body with a focus on Interventional Solutions, Orthopaedics, Surgery and Vision.  

We are located in Leiden with a production facility for breast implants. In Groningen and Eindhoven we develop and produce intraocular lenses and ophthalmic surgical systems. From our organization based in Amersfoort we serve Dutch hospitals with our medical-technological products and services.


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