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Principal Scientist, Associate Director, or Director (commensurate with experience)

About us

CHO Plus is an early-stage biotechnology company located in the San Francisco Bay Area.  We have developed patented technology for engineering mammalian cells to vastly increase their productivity for therapeutic protein or virus production.


We receive major support from Janssen Biotechnology (Johnson & Johnson) and we are located in the Johnson & Johnson – JLABS (South San Francisco) incubator.



This senior-level molecular/cellular biologist position is for someone who will help us disrupt therapeutic protein and virus production.


The successful candidate will be an experienced independent molecular/cellular biologist or virologist, motivated to further develop our technology toward full commercialization.  The work will involve cell engineering, vector design and construction, transfection, mammalian cell culture, cloning and screening, flow cytometry, and other related molecular and cellular biology techniques.  Collaboration with co-workers and with pharmaceutical company partners is essential for this position.


Present and future management responsibilities will depend on level of experience, and development within the company.


Must have

PhD in a related field, or an equivalent amount of experience; multiple years of experience with recombinant mammalian cell line creation, preferably for one or more pharmaceutical companies; mammalian cell culture expertise; experience with general molecular biology techniques for designing and constructing vectors and transfecting mammalian cells; experience with protein assay techniques for screening transfected cells



Experience with flow cytometry, virology, cell banking, transposase transfection methods; experience with protein analytical methods; knowledge of the regulatory environment related to creating and testing cells destined for GMP manufacturing; photomicroscopy



Salary plus equity (generous stock option grant), commensurate with experience


Start date

Immediate opening

How to Apply

Send resume by clicking the "Apply Now" butotn

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