• 11 februari 2026
  • vacaturenummer: 726957

Ever wondered how simulations can perfect the art of mixing bioreactors? Looking for an impactful Master thesis or internship in a high-tech environment? Why not join the Process Science Modelling and Data (PSMD) team and redefine bioreactor performance?

€750 internship (40 hours) allowance per month

Develop your personal and business skills

Hybrid; in Leiden Bioscience park and from home

Improve your knowledge with theory and practice

Build your network across J&J

Work in pharmacy with international colleagues

You must have the ability to work independently and as part of a team. Moreover, you should be willing to commit to a to 6-month assignment on a full-time basis (32-40 hours per week) in Leiden.

  • Highly motivated to start this internship;
  • Enrolled in a Chemical Engineering, BioScience or Mathematics master;
  • Knowledge of CFD and an interest in this field is essential;
  • You are reliable, eager to learn, possess good communication and time-management skills;
  • Available from April 1st.

You will work in a multi-disciplinary team called Process Science Modelling and Data (PSMD). This group focuses on improving the understanding and optimization of processes through sophisticated modelling and data analysis techniques by improving statistical methods, physics based modelling, and other computational tools. You will have a key role in assisting the scientists in JnJ for better understanding of bioreactors and mixing vessels by using CFD and other modeling approaches.

  • You will play a key role in understanding the behaviour of bioreactors and mixing vessels;
  • Development of the model will involve computational fluid dynamics (CFD);
  • Programming in Python would be necessary for this project, knowlegde in programming is a plus.

Johnson & Johnson is a global healthcare company dedicated to bringing meaningful innovation to health. Our business focuses on the discovery, development, manufacture, and marketing of medical technologies and pharmaceuticals. In our organization, entrepreneurial people thrive in a dynamic culture where innovation and J&J mindset are central. To strengthen our team, we continuously seek enthusiastic, talented individuals who have the ambition to develop themselves and add value to Johnson & Johnson.

  • Guided by the famous J&J Credo, we prioritize our patients, customers, and employees. Join a company built on a strong ethical foundation;
  • Every task supports our mission of improving health globally. Your work here is meaningful and has a direct, positive impact;
  • We invest in your professional development, offering ample training and opportunities to grow both your technical skills and leadership abilities;
  • A pleasant, modern environment that's professional yet informal. Easily connect and exchange ideas with senior colleagues;
  • Join an inclusive environment where your unique perspective is welcomed. We believe diverse voices drive better innovation.

Ready to grow and learn? Apply now!

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