1+ months

Those who join Emergent BioSolutions feel a sense of ownership about their future. You will excel in an environment characterized by respect, innovation and growth opportunities. Here, you will join passionate professionals who advance their scientific, technical and professional skills to develop products designed-to protect life.

Conduct cell line development for recombinant proteins by designing, constructing, and evaluating expression vectors. Perform vector design, construction. Perform transfection or electroporation and single cell isolation and characterization to generate highly productive, high quality, robust cell lines that meet all regulatory requirements. Perform media and feed optimization to compare selected clones. Perform cell culture in shake flasks and small bioreactors to evaluate clones. Document experiments in details in lab notebooks. Lab equipment maintenance and trouble shooting. Draft batch records and standard operation protocols for process development and equipment operations. Summarize experiment in reports and present data within group and external stakeholders.

Reasonable accommodations will be made to enable individuals with disabilities to perform the essential functions.

Perform molecular cloning, primer design, PCR, plasmid preparation, DNA sequence verification activities.
Perform mammalian cell cultures in multi well plates, shake flasks, and small bioreactors.
Perform cell thaw, cell passage, scale up and cell banking
Perform cell transfection or electroporation, clone selection,
Perform single cell cloning from 96-well plates and screen clones through high throughput analytical methods such as ELISA, Octet or Gyro labs.
Optimize media and feed for selected clones.
Use DOE software to design the experiments and analyze the results.
Operation and maintenance and troubleshooting f of cell line development related equipment.
Document experiments in details in lab notebooks.
Write technical reports, SOPs, and tech transfer reports
Improve proteins production by designing, constructing, and evaluating expression vectors as required.

The above statements are intended to describe the nature of work performed by those in this job and are not an exhaustive list of all duties. Nothing in this job description restricts managements right to assign or reassign duties and responsibilities to this job at any time which reflects managements assignment of essential functions.


PhD in molecular biology and cell biology or related discipline with 1-2 years relevant industry experience. Or MS/BS with 5 years industry experience in cell line development.
Expertise in cell line development, cell culture, cell and molecular biology, cell metabolism, and other cell-based assays
Hands on experience in cell line development including transfection, selection, expansion, cloning and sub-cloning, cell banking, and characterization.
Experience with quantitative and qualitative methods, including ELISA, MSD, fluorescence and IF microscopy, colorimetric, enzymatic assays and reporter assays, FACS assays, SDS-PAGE and Western blot.
Experience with automation and high-throughput technologies for cell line generation and process optimization is a plus.
Performs work independently and as part of a team to achieve cell line develop goals
Ability to think critically, and demonstrated troubleshooting and problem-solving skills
Excellent verbal and written communication and organizational skills
Willingness to expand skill set and responsibilities as required.
Ability to work in a highly collaborative environment and adhere to timelines.
Experience with DOE sofware to design and analyze experiments is a plus.
Experience with cell culture media analysis and optimization is a plus.
Experience with Ambr bioreactors operation is preferred.
Experience with Baculovirus system for protein expression in insect cells is prefered.

Successful applicants for this position must be fully vaccinated against COVID-19 as a condition of employment. Individuals with qualifying medical issues or sincerely held religious beliefs or practices that may prevent them from getting the vaccine may request an exemption from the vaccine requirement.

There are physical/mental demands and work environment characteristics that must be met by an individual to successfully perform the essential functions of the job. This information is available upon request from the candidate.

Reasonable accommodations may be made to enable individuals with disabilities to perform all essential functions.

Emergent BioSolutions is an Equal Opportunity/Affirmative Action Employer and values the diversity of our workforce. Emergent does not discriminate on the basis of race, color, creed, religion, sex or gender (including pregnancy, childbirth, and related medical conditions), gender identity or gender expression (including transgender status), sexual orientation, age, national origin, ancestry, citizenship status, marital status, physical or mental disability, military service or veteran status, genetic information or any other characteristics protected by applicable federal, state or local law.

Information submitted will be used by Emergent BioSolutions for activities related to your prospective employment. Emergent BioSolutions respects your privacy and any use of the information submitted will be subject to the terms of our Privacy Policy<> .

Emergent BioSolutions does not accept non-solicited resumes or candidate submittals from search/recruiting agencies not already on Emergent BioSolutions approved agency list. Unsolicited resumes or candidate information submitted to Emergent BioSolutions by search/recruiting agencies not already on Emergent BioSolutions approved agency list shall become the property of Emergent BioSolutions and if the candidate is subsequently hired by Emergent BioSolutions, Emergent BioSolutions shall not owe any fee to the submitting agency.


Protecting and Enhancing 1 billion lives by 2030 focuses our energy to improve the quality of life for individuals around the world, giving them the opportunity to experience the fullness of life.

Our drive towards this vision informs all of our actionswhether it is our approach to product development, manufacturing, encouraging employee health and wellness or giving back to the communitywe strive every day to achieve this shared goal.


  • Stand shoulder to shoulder no matter what
    • We combine our best thinking and communicate openly to support each other.
  • Break through thinking
    • We take smart risks, pursue innovation and challenge ourselves to constantly improve.
  • Own it always
    • Every person at Emergent is engaged and accountable for delivering on our commitments.
  • Compete where it counts
    • We set the right goals and respect each other as we conquer them together.



  • Biotechnology
Posted: 2022-01-05 Expires: 2022-05-22

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Emergent BioSolutions Inc.
San, CA

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