Buffer & Media Operator

Eurofins Scientific is an international life sciences company, providing a unique range of analytical testing services to clients across multiple industries, to make life and our environment safer, healthier and more sustainable. From the food you eat, to the water you drink, to the medicines you rely on, Eurofins works with the biggest companies in the world to ensure the products they supply are safe, their ingredients are authentic and labelling is accurate. Eurofins believes it is a global leader in food, environmental, pharmaceutical and cosmetics products testing and in agroscience CRO services. It is also one of the global independent market leaders in certain testing and laboratory services for genomics, discovery pharmacology, forensics, CDMO, advanced material sciences and in the support of clinical studies.

In over just 30 years, Eurofins has grown from one laboratory in Nantes, France to over 62,000 staff across a network of more than 1000 independent companies in over 62 countries and operating more than 900 laboratories. Eurofins offers a portfolio of over 200,000 analytical methods to evaluate the safety, identity, composition, authenticity, origin, traceability and purity of biological substances and products, as well as providing innovative clinical diagnostic testing services, as one of the leading global emerging players in specialised clinical diagnostics testing.

In 2025, Eurofins generated total revenues of EUR € 7.296 billion, and has been among the best performing stocks in Europe over the past 20 years.

Eurofins PSS Insourcing Solutions® is a global, award-winning insourcing solution. We place our skilled team directly at the client site, managing operations seamlessly and eliminating complexities. We ensure a strategic, long-term service commitment that delivers value directly at the client' site, utilising their facilities, equipment, and methodologies, while maintaining the same service, expertise, and cGMP compliance available at the Eurofins facility. If you're an employee seeking an exceptional career journey, Eurofins PSS Insourcing Solutions® is your gateway to a future where innovation, collaboration, and success converge. Join us in a world where excellence knows no boundaries!

For our location in Leiden, we are looking for an enthusiastic Pilot Plant Buffer & Media Operator to join a new team.

In this position you will be part of a production operations team that produces end-to-end clinical material for advanced therapies, specially focused on cell and gene therapies. This includes production of media & buffers, cell banks, starting material like virus seeds and plasmids, API and DS for several different modalities.

You will be required to adhere to GxP guidelines and for some activities you will be required to enter clean rooms. Your activities will include:

• Production of a wide range of buffers and media for both GMP and non-GMP applications.
• Buffer/Media Preparation on scales ranging from 10 ml to 200L.
• Supporting the introduction of new buffers for new processes.
• Supporting the equipment & material introduction for new buffers and processes.
• Support other areas of operations as required.

• MLO degree in Biology, Biochemistry, Life Sciences or related sciences;
• Experience in a pharmaceutical environment and knowledge of GxP is preferred;
• You are flexible and proactive;
• You enjoy working in a team and communicate well;
• You are accurate, and have great attention to detail;
• You can work independently;
• You are a quick learner who thrives in a dynamic environment;
• You are self-motivated with a positive attitude;
• You enjoy volunteering your ideas and working on continuously improving your environment.
• You are fluent in English (Spoken/written)

Working at PSS means working in a team where people support each other, take responsibility for their work and stay closely connected to the client environment they work in. You will be part of an international setting, with colleagues who value clear communication, teamwork and a good working atmosphere.

We believe it is important that people can keep developing in their role. That is why we offer specialist training and opportunities to build your knowledge and skills further. We also make time to stay connected as a team, for example through monthly team lunches, team activities and moments where colleagues are recognized for their contribution. We offer:

• A responsible position within the team;
• Room to share your ideas and input;
• Specialist training and opportunities for personal and professional development;
• 31 vacation days per year based on a full-time employment contract, with the option to purchase 5 additional days;
• The option to use gross/net benefit schemes for sports and the purchase of a bicycle;
• Access to an online preventive mental health platform;
• A flexible start time between 07:00 and 09:00, depending on team planning and operational needs;
• A suitable salary and additional benefits.

Working at PSS gives you the personal approach of a medium-sized organization, with the wider network and structure of Eurofins as a parent company. In your work, you regularly interact with other companies and scientists within the Eurofins group, which brings variety to the role.

This also means there may be opportunities to grow, depending on your role, experience and development.

Would you like to know more?

For questions about the position, you can contact the hiring team via the ‘I’m interested’ button below.

Acquisition for this vacancy is not appreciated.