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Senior Associate Scientist

Chesterfield, Missouri
Closing date
May 19, 2022

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Physical Sciences, Chemistry
Position Type
Full Time
Job Type
Staff Scientist
Organization Type
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Why Patients Need You

Pfizer's purpose is to deliver breakthroughs that change patients' lives. Research and Development is at the heart of fulfilling Pfizer's purpose as we work to translate advanced science and technologies into the therapies and vaccines that matter most. As a member of the Pfizer team, you will apply cutting edge analytical design and development capabilities to accelerate and bring the best-in-class medicines to patients around the world.


The qualified candidate will join the Analytical R&D organization to enable development of biological therapeutics and vaccines in Chesterfield, MO. The qualified candidate will be responsible for applying analytical methods in the assessment of product quality, detection of impurities, and characterization. This group performs testing in the R&D and/or regulated settings in support of clinical drug and vaccine candidates. The group performs method development, transfer, verification, and qualification in support of process and formulation development for biotherapeutics and vaccines.


The qualified colleague is responsible for developing, troubleshooting, and utilizing analytical methodologies to support process development of biotherapeutics, vaccines and oligonucleotides. The individual is responsible for becoming proficient in a breadth of analytical methodologies including HPLC and electrophoresis assays. The colleague must work within corporate guidelines and must appropriately record, archive, and report all data. The colleague must be able to interact effectively with peers and leaders as part of a multi-disciplinary team. The candidate must thrive in a fast-paced environment. Attention to detail, strong organizational skills, the ability to multitask and effective interpersonal and communication skills are required. Documentation of analytical results in technical reports is required.


Must Have

3-6 years BS in chemistry, biochemistry, biology or related field


0-2 years MS in chemistry, biochemistry, biology or related field

Nice To Have Have
  • Laboratory experience in a variety of analytical laboratory techniques.
  • Ability to follow established procedures under minimal supervision.
  • Experience with Quality Systems and Good Documentation Practices.
  • Some knowledge of drug development process for progression of biological candidates.

Other Desirable Attributes:
  • Excellent documentation skills
  • Self-motivated and highly effective in a team-based environment
  • Effective oral and written communication skills
  • Experience in analysis of large molecules
  • Experience with laboratory data systems such as Laboratory Information Management Systems


Position requires occasional light lifting and periods of standing, sitting or walking.



Relocation support available
Eligible for employee referral bonus

Pfizer requires all U.S. new hires to be fully vaccinated for COVID-19 prior to the first date of employment. As required by applicable law, Pfizer will consider requests for Reasonable Accommodations.

Sunshine Act

Pfizer reports payments and other transfers of value to health care providers as required by federal and state transparency laws and implementing regulations. These laws and regulations require Pfizer to provide government agencies with information such as a health care provider's name, address and the type of payments or other value received, generally for public disclosure. Subject to further legal review and statutory or regulatory clarification, which Pfizer intends to pursue, reimbursement of recruiting expenses for licensed physicians may constitute a reportable transfer of value under the federal transparency law commonly known as the Sunshine Act. Therefore, if you are a licensed physician who incurs recruiting expenses as a result of interviewing with Pfizer that we pay or reimburse, your name, address and the amount of payments made currently will be reported to the government. If you have questions regarding this matter, please do not hesitate to contact your Talent Acquisition representative.

EEO & Employment Eligibility

Pfizer is committed to equal opportunity in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, disability or veteran status. Pfizer also complies with all applicable national, state and local laws governing nondiscrimination in employment as well as work authorization and employment eligibility verification requirements of the Immigration and Nationality Act and IRCA. Pfizer is an E-Verify employer.

Research and Development

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