Zorg & Medisch Vacatures in Leiden

Over de vacature

Ready to shape the future of Pharma? At Johnson & Johnson in Leiden, we are bringing breakthrough innovations to global health. We are looking for a driven Master's student to dive into the world of process modelling using Computational Fluid Dynamics (CFD). Want to work on state-of-the-art gene and cell therapies for 40 hours a week starting September 2026? Keep reading!

what we offer

• €750 internship (40 hours) allowance per month
• Bioscience park in Leiden
• International work environment
• Develop your personal and business skills
• Development guidance during Internship
• Exposure within Pharma industry

who are you
Are you an analytical thinker who loves solving complex technical puzzles? We are looking for a proactive and enthusiastic student who thrives both independently and in a dynamic team setting.

• You are a Master’s student pursuing Mechanical Engineering, Chemical Engineering, or a related discipline.
• You have a strong command of the English language both verbal and written.
• You have experience with ANSYS CFD packages, including CAD.
• You have experience with Python or MATLAB.
• You have analytical problem-solving skills.

what will you do
During this 6-month internship, you will step into our Drug Product Development and Delivery department. You will develop computational tissue models to simulate local drug delivery for future protein, gene, and cell therapies. By using imaging data and tissue properties like stiffness and porosity, you will map out how drugs distribute and retain in targeted areas. Working alongside experienced scientists, your predictive models will help optimize clinical injection procedures and guide future formulations.

• Conduct high-level simulations using CFD tools to optimize biomedical processes and systems.
• Collaborate with global cross-functional teams to interpret and align simulation results with business objectives.
• Evaluate tissue models under varying injection parameters to overcome drug delivery barriers.
• Gather insights into how advanced engineering applications drive healthcare innovations.
• Manage daily project tasks independently while contributing actively to your immediate teamwork setting.

where will you work
You will be based at Johnson & Johnson Innovative Medicine in Leiden, Netherlands, a global pharmaceutical leader dedicated to tackling complex healthcare challenges. The workplace culture is dynamic, entrepreneurial, and highly innovative, where your growth is supported by a gross internship allowance of €750 per month and flexible hybrid working options. Here, you will work within an inspiring environment alongside expert scientists, gaining unparalleled experience in the manufacturing of state-of-the-art therapies.

• The famous J&J Credo, we prioritize our patients, customers, and employees;
• We invest in your professional development, offering ample training and opportunities to grow both your technical skills and leadership abilities;
• A modern environment that's professional yet informal. Easily connect and exchange ideas with senior colleagues;
• Join an environment where your unique perspective is welcomed. We believe diverse voices drive better innovation.

job application
Good to know: within 15 minutes of your application, you will receive a WhatsApp message from us. We will then ask you a few short questions about your application so we can help you faster. Don't have WhatsApp? No problem! In that case, we will contact you by phone or email.

Over de vacature

Passion for quality, accuracy, and making an impact? We’ve got the perfect spot for you. Johnson & Johnson Innovative Medicine is looking for a driven Lab Technician to join their Ava-Mycoplasma laboratory. You’ll be part of an energetic team in a dynamic environment where your work truly counts. Sound like the right match? Read on to find out more!

what we offer

• A salary between €2886,- and €3043,- per month
• A workplace at an international organization
• A diverse and pleasant work environment
• Professional development opportunities
• In Leiden on Bio-Science park
• Reimbursement for public and own transportation

who are you
As a Lab Technician AVA-Mycoplasma you are someone who takes pride in delivering high-quality work. You thrive in a structured environment where procedures and safety are the standard. With your disciplined mindset, you ensure that every task is completed accurately and according to plan. You also bring the following:

• You have completed a MLO or HLO or equivalent laboratory education;
• You enjoy performing routine tests in the lab;
• You take initiative and work with high precision, enjoying the balance between teamwork and independent tasks;
• You are proficient in both written and spoken English.

what will you do
As a Lab Technician AVA-Mycoplasma, the primary focus is supporting routine Quality Control testing within the AVA-Mycoplasma laboratory at Johnson & Johnson Innovative Medicine. This laboratory performs a variety of assays and tests that are essential for product safety and release. This department operates within a highly disciplined QC environment characterized by standardized workflows and predictable daily routines. Your responsibilities will include:

• Perform lab tests including PCR, Cell Culture, BioFire, and Virus/Mycoplasma assays;
• Follow GMP Guidelines strictly to ensure safety and quality;
• Maintain precise documentation;
• Review test data;
• Collaborate with fellow colleague's, analysts and supervisors.

where will you work
Johnson & Johnson Innovative Medicine is dedicated to addressing major global health challenges, including oncology and infectious diseases. Guided by the J&J Credo, the company prioritizes patients, customers, and employees within a highly collaborative working environment. The organization plays a critical role in developing and delivering biotherapeutics and vaccines to patients globally. To support this mission, the company continuously seeks motivated and talented individuals who are eager to develop professionally and contribute to the organization's global impact.

Other relevant information regarding this position:

• A pleasant, modern environment that's professional yet informal. Easily connect and exchange ideas with senior colleagues;
• Enjoy 36 holiday days per year (based on full-time employment);
• Full travel reimbursement for both public transport and private travel, plus immediate enrollment in the Randstad pension plan;
• Unlimited access to free online training via GoodHabitz to help you stay ahead;
• A salary and an end-of-year bonus to reward your hard work and flexibility.

job application
Did we catch your interest? Apply now and we’ll get in touch with you as soon as possible!

Over de vacature

We are currently searching for an enthusiastic intern to study metabolic pathways in plasmid production, within the Advanced Therapies API Process Development department, part of Johnson & Johnson Innovative Medicine in Leiden. This team consists of ~25 employees with background(s) in bioprocess design, biochemistry and molecular biology.

what we offer

• €750 internship (40 hours) allowance per month
• Work onsite at Bioscience park, Leiden
• Build your network across J&J
• Develop your personal and business skills
• Improve your knowledge with theory and practice
• Work in pharmacy with international colleagues

who are you
We are looking for a proactive individual whom is looking to develop their skills in problem solving, experimental/analytical data and building hands on experience with offline analytics.

• • Master student in biotechnology, bioprocess development, biochemistry, or a similar study
• • Affinity with metabolic analysis for bioreactor cell cultivation
• • You are available for a minimum of 6 months and 40 hours per week
• • Fluent in English, both verbally and in writing
• Ability to work independently as well as part of a multidisciplinary team
• Flexibility to adapt to changing business and project needs

what will you do
A thorough understanding of cellular metabolism forms the basis for designing robust and scalable upstream biotechnological processes. Metabolic analysis explains cellular responses to varying process conditions. By understanding the interplay between the formation of (by)products and the physiological state of the cells, a forward control strategy can be designed for real-time bioreactor process control.

This internship focuses on using existing online process and analytical data, together with metabolite analysis of archived samples. These data sets can be used to:

• Get a deeper understanding of the interplay between bioreactor process conditions, formation of (by)products and product quality.
• Convert measured information into actionable insights that facilitate improved bioprocess development and outcomes.
• Develop predictive models in which (already available) spectra are coupled to analytes, with the goal to further develop a process analytical tool for real-time monitoring.

where will you work
The Advanced Therapies API (Active Pharmaceutical Ingredient) Process Development department designs and develops scalable manufacturing processes for a diverse panel of pharmaceutical products. Our work spans the full workflow from cell culture through downstream purification. We partner closely with our local pilot plant, to enable production of innovative therapies for clinical evaluation.
J&J 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.

• The famous J&J Credo, we prioritize our patients, customers, and employees;
• We invest in your professional development, offering ample training and opportunities to grow both your technical skills and leadership abilities;
• A modern environment that's professional yet informal. Easily connect and exchange ideas with senior colleagues;
• Join an environment where your unique perspective is welcomed. We believe diverse voices drive better innovation.

job application
Good to know: you will receive a WhatsApp message from us within 15 minutes of submitting your application. We will ask you a few short questions about your application to help you faster. Don't have WhatsApp? No problem! We will contact you by phone or email.