As part of its business growth and with a view towards a major expansion of its laboratories, Quality Assistance is looking to recruit an Immunoassay scientist for its bioanalysis team, which works on client projects involving the analysis of biological matrices using Ligand Binding Assays. 

Your mission

You will report to the Immunoassay Team Leader. 

You will be part of a team of 5 to 6 people. 

The Immunoassay team offers a wide range of solutions for the analysis of biological samples. Our bioanalytical services include pharmacokinetics and toxicokinetics studies, immunogenicity assessment and biomarker studies

Our highly skilled team has extensive experience with: 

  • Bioanalytical methods

  • PK/TK studies 

  • Anti-Drug Antibodies assays

  • Biomarker studies

For all matrices: 

  • Whole blood

  • Plasma

  • Serum

  • Urine

  • Tissues

  • Tumors

  • Etc.

The Immunoassay scientist will be accountable for 

  • Taking part in the treatment and preparation of samples received to perform assays and analyses by applying the study protocols in use. 

  • Applying existing methods.

  • Independently ensuring the transfer and/or development of new analytical methods, as well as their GLP compliance.

  • Handling the data generated by the analysis, interpreting the results, discussing them and drawing conclusions. 

  • Validating raw data.

  • Writing protocols and study reports. 

  • Providing feedback on continuous improvement approaches related to your field of expertise. 

Depending on your level of expertise and autonomy, you may also ensure the following tasks: 

  • Provide support during audits and/or investigations.

  • Write and/or review the team's protocols and procedures after discussion with managers. 

  • Participate in internal staff training under the supervision of managers. 

Your profile

Master's degree / Engineer specialising in biology and biochemistry


  • Several years' experience in immunoassays and/or immunology

  • Good technical expertise in ELISA/ECLIA applied to the analysis of biological matrices (Ligand Binding Assay)

  • Work experience in a GLP environment 

  • Good knowledge of guidelines (EMA, FDA, ICH) applicable to bioanalysis

  • Good communication skills in French and English (writing scientific reports/documents, email, contacts with clients, etc.) 

  • Good team spirit

  • Multitask, you are able to prioritise and work independently

  • Rigorous, you know how to identify anomalies/problems/difficulties encountered when performing experiments 


  • Good practical and theoretical knowledge of the following techniques : multiplex and/or cell-based assay and/or flow cytometry

  • Knowledge of biological products (monoclonal antibodies, conjugated antibodies, proteins, recombinant peptides) and the regulations in force in this field (EMA and FDA)

Quality Assistance_Scientist Immunoassay

Why join Quality Assistance?

Do you want to thrive in a professional setting that still maintains a human touch? Are you looking for a working environment based on mutual respect, communication and support, where it is good to live and work?

Apply now to join our analytical CRO! We are pursuing a common goal: to accelerate access to new medicines.

You will benefit from a competitive compensation package in line with the industry, including many fringe benefits (meal vouchers, hospitalisation and outpatient care insurance, group insurance, bonuses, and for certain positions, a company car and petrol card).

As soon as you start your job, you will follow a comprehensive training programme adapted to your profile and role.

Did you know that in 2023 we welcomed, and trained 23 new colleagues? We also promoted 25 team members (vertical mobility). 2 positions were filled by internal candidates. 

We offer multiple opportunities so that you can integrate yourself into your new work environment and get to know your new colleagues (after-works, sports and recreational activities, team building, department dinners, end-of-year parties, BBQs, events for families, etc.). We pamper our team members and take care of them: free sports lessons, free fruit and sugar-free drinks, daily delivery of lunches and bread, free car wash, ironing service via service vouchers, books and board games available, and much more….

You will join a company that listens to your needs and your suggestions!


10 reasons to join

About Quality Assistance

Quality Assistance is a leading European Contract Research Organisation (CRO) providing the pharmaceutical industry with all the analytical services required by EMA and FDA regulations for the development and marketing of innovative human medicinal products.

From candidate selection, through non-clinical and clinical studies, to marketing authorisation, Quality Assistance provides customised solutions for its clients: 

  • We define analytical protocols;

  • We develop and validate specific new analytical methods;

  • We perform characterisation, stability, pharmacokinetic, biomarker and immunogenicity studies as well as batch release testing.

These tests are performed in order to evaluate the Quality, Safety and Efficacy of the given drugs.

With more than 40 years’ expertise at the forefront of analytical sciences, Quality Assistance holds a unique place on the market thanks to:

  • all of its laboratories located on one site (Donstiennes, Belgium);

  • 250 highly qualified professionals;

  • a wide range of analytical methods and state-of-the-art equipment.

The Quality Assistance environment is GMP, GLP and GCLP/GCP compliant.

Visit to learn more.

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