Associate Scientist

Pfizer • St Louis, MO

1d • Onsite

About The Position

The Associate Scientist will join Pfizer’s Analytical R&D organization in Chesterfield, Missouri, supporting development of biological therapeutics and vaccines. The role applies analytical methods to assess product quality, detect impurities, and characterize products. Work may take place in R&D and/or regulated settings supporting clinical drug and vaccine candidates.

The position supports process and formulation development through analytical method development, transfer, verification, and qualification. The scientist develops, troubleshoots, and uses analytical methodologies for biotherapeutics, vaccines, and oligonucleotides, and builds proficiency across techniques including colorimetric, HPLC, and electrophoresis assays. The role requires working within corporate guidelines; accurately recording, archiving, and reporting data; and documenting analytical results in technical reports. The Associate Scientist collaborates with peers and leaders on a multidisciplinary team in a fast-paced environment.

Requirements

• Bachelor’s degree in chemistry, biochemistry, biology, or a related field.
• Experience using common AI tools, including generative technologies such as ChatGPT or Microsoft Copilot, to support problem solving and enhance productivity.
• Curiosity about how AI tools can improve outcomes, and understanding of responsible AI practices, including risk management and ethical use.
• Attention to detail, strong organizational skills, ability to multitask, and effective interpersonal and communication skills.
• Ability to thrive in a fast-paced environment.

Nice To Haves

• Laboratory experience with 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 the drug development process for progression of biological candidates.
• Excellent documentation skills.
• Self-motivated and highly effective in a team-based environment.
• Effective oral and written communication skills.
• Experience analyzing large molecules.
• Experience with laboratory data systems such as Laboratory Information Management Systems.

Responsibilities

• Develop, troubleshoot, and use analytical methodologies to support process development for biotherapeutics, vaccines, and oligonucleotides.
• Build proficiency in a range of analytical methods, including colorimetric, HPLC, and electrophoresis assays.
• Apply analytical methods to assess product quality, detect impurities, and characterize products.
• Support method development, transfer, verification, and qualification for process and formulation development.
• Record, archive, and report data in accordance with corporate guidelines.
• Document analytical results in technical reports.
• Work effectively with peers and leaders as part of a multidisciplinary team.

Benefits

• 401(k) plan with Pfizer Matching Contributions and an additional Pfizer Retirement Savings Contribution.
• Paid vacation, holiday, and personal days.
• Paid caregiver/parental and medical leave.
• Medical, prescription drug, dental, and vision coverage.
• Eligible to participate in Pfizer’s Global Performance Plan, with a bonus target of 7.5% of base salary.
• Relocation assistance may be available based on business needs and/or eligibility.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level