Randstad, as the EMEA Johnson & Johnson talent acquisition partner, is responsible for finding and contracting talent for the contingent roles at Johnson & Johnson. If you are selected for a role you will be engaged or employed by one of the Randstad recruitment companies in EMEA and will not be an employee of Johnson & Johnson.

Johnson & Johnson

Senior Laboratory Technician

Posted Sep 21, 2026
Job ID: JJJP00026603
Location
Leiden
Hours/week
40 hrs/week
Timeline
11 months , 4 weeks
Payrate range
Unknown

Senior Laboratory Technician

Location: Leiden, The Netherlands

Duration: 12-month initial contract with an opportunity for extension

Hours: 40 hours per week

Imagine your next project transforming lives by working to create a world without disease and advancing cutting-edge science as a Senior Lab Technician in Leiden.

Johnson & Johnson Innovative Medicine is recruiting for a senior Lab technician, Advanced Therapeutics, Analytical Development, located in Leiden, The Netherlands. At Johnson & Johnson Innovative Medicine, we are working to create a world without disease. Transforming lives by finding new and better ways to prevent, intercept, treat and cure diseases inspires us. We bring together the best minds and pursue the most promising science.

Department: The Strategic Operations (SO) group within the Analytical Development (AD) Department of the Advanced Therapeutics AD sector of J&J Innovative medicine.

The Strategic Operations group focuses on supporting production and laboratory activities with:

  • Inspection, release and change management of incoming production raw materials and laboratory chemicals.

  • Sample and Material receipt, handling, storage and forwarding.

  • Maintaining controlled state of production clean room and production utilities by environmental and utility monitoring programs.

  • Coordination of Release and Stability testing and Outsourcing Coordination.

  • Internal release and stability testing (incl. culturing of cells).

  • Provides Process Analytical Support (PAS) for Product Development teams.

  • Ensuring the availability and maintenance of qualified equipment used in the laboratories.


roles and responsibilities

  • Release and Stability testing of GMP/TOX and clinical batches for Advanced Therapeutics products under GMP quality system.

  • Execution of Assay qualifications on GMP qualified laboratories.

  • Performing assays on a routine basis with a ‘first time right attitude’.

  • Accurate completion of documentation such as digital assay run sheets, laboratory notebooks and equipment logbooks.

  • Support Process Development testing for Process Development.

  • Culturing of cells, including passaging and seeding of cells.

  • Write and update various documents (e.g. test instructions, work instructions).

  • Routine testing across GMP and non-GMP work streams.

  • Performing qualifications.

  • Working with external parties (with no direct line management duties).

  • Mentoring and influencing junior staff.


how to succeed

  • MBO (or HBO) level in a life science study.

  • Minimum of 5 years of experience in a GMP pharmaceutical environment.

  • Affinity with execution of assays under a GMP quality system is a must.

  • Experienced with assay qualifications/validations is a strong advantage.

  • Experienced with laboratory management systems.

  • Developed interpersonal skills and able to build strong relationships.

  • Flexible and accurate.

  • Motivated and have a positive can-do mentality.

  • Good communication skills in (Dutch and) English, written and verbally. English proficiency is required, with Dutch considered a nice-to-have.

  • Experience with analytical methods, like UPLC and HPLC.

  • Ensuring that a high level of Quality is maintained, based on previous experience working in a GMP environment.

  • Strong testing experience.

  • Ability to mentor and influence junior staff.


benefits

This role offers a very competitive hourly rate. This contract will run for 12-month initial contract with an opportunity for extension

you are welcome here

Johnson & Johnson is working to create an inclusive environment where diverse backgrounds, perspectives, and experiences are valued and each and every one of our people feels that they belong and can reach their potential. No matter who they are.

about Johnson & Johnson Innovative Medicine

Patients inform and inspire our science-based innovations, which continue to change and save lives. Applying rigorous science and compassion, we confidently address some of the most complex diseases of our time and unlock the potential medicines of tomorrow. Our diverse portfolio spans multiple therapeutic areas — Oncology, Immunology, Neuroscience, Cardiovascular, Pulmonary Hypertension, and Retina. 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.

application process

We are looking to process the first round of applications within the next 2 working days. We do not accept applications via email or LinkedIn InMail - you must apply direct to this advert.

Diversity, Equity & Inclusion

For more than 130 years, diversity, equity & inclusion (DEI) have been part of our cultural fabric at Johnson & Johnson and woven into how we do business every day. Our commitment to respect the dignity and diversity of all is embedded in our Credo. We know that the success of our business depends on having the best talent in a workforce that reflects the diverse markets we serve around the world and an inclusive culture that values different perspectives and life experiences. That is why we are working to create an inclusive environment where diverse backgrounds, perspectives and experiences are valued and each one of our people feels that they belong and can reach their potential. No matter who they are. Diversity, Equity & Inclusion at Johnson & Johnson means “You Belong”.

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