Permanent contract

Polyplus-transfection is a biotechnology company that develops, markets and sells innovative solutions for the delivery of nucleic acids in research, bio-production and therapeutics.

Polyplus-transfection supplies its proprietary range of reagents for the transfection of genes, oligonucleotides and siRNA through a worldwide distributor network since 2001. The headquarters are based in Strasbourg, France, with subsidiaries in USA and Asia.

To reinforce the team, we are currently looking for a talented and motivated Bioprocess Development Engineer


  • In charge of the production of recombinant viruses in lab scale bioreactors (suspension and adherent cell cultures)
    • Development and optimization of cell culture processes
    • Optimization of the transfection step
    • Experimental validation in a bioreactor model of the R&D transfection reagents
    • Viral titers analysis (transuction, cytometry, PCR, ELISA)
  • Collaborate and interact effectively across a dynamic scientific environment.
    • Within the multidisciplinary R&D team with biologists and chemists
    • With the Marketing and Scientific Support departments
  • Report the advancement of experiments and present results internally.
  • Participate in the operational organization of the laboratory



  • Engineer/Master Degree in biotechnology and bioprocesses
  • Strong expertise in cell culture process development for bioreactors
  • Knowledge and experience in transfection, molecular biology and design of experiment required
  • Excellent analytical skills to understand complex problems
  • 5 years relevant industrial/research experience is required
  • English & French: Fluent spoken and written (mandatory)
  • High organizational skills in the management of missions and priorities
  • Ability to effectively interact with various functions at all levels of the organization
  • Sense of responsibility, enthusiasm, diplomacy and willingness to learn are a must


  • An open-minded and flexible work environment in a qualified and dynamic team
  • Permanent contract, Full time job
  • Location: Illkirch-Graffenstaden


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