# Associate Scientist at Pfizer

Pfizer is hiring an Associate Scientist. It pays $60k-$100k a year and Level rates it Uses AI ●●○○; you can [apply on Pfizer](https://jobsbylevel.com/go/b7988750-bebe-4362-b7a7-98956ea3243e?utm_medium=ai-agent).

AI Level 2, AI centrality 45 out of 100. United States - Missouri - St. Louis - Chesterfield.

## Details

- Company: [Pfizer](https://jobsbylevel.com/companies/pfizer)
- AI level: AI Level 2 (score 45 out of 100)
- Location: United States - Missouri - St. Louis - Chesterfield
- Salary: $60k-$100k
- Posted: October 22, 2026
- Apply: https://jobsbylevel.com/go/b7988750-bebe-4362-b7a7-98956ea3243e?utm_medium=ai-agent

## Prepare for this job

The job page lists 5 likely interview questions for this offer, with a CV checklist: https://jobsbylevel.com/jobs/associate-scientist-at-pfizer-8dd325

## Description

Use Your Power for Purpose Pfizer’s purpose is to deliver breakthroughs that change patients’ lives. At the core of fulfilling this purpose is our commitment to Research and Development, where we strive to translate advanced science and technologies into the therapies and vaccines that matter most. Whether you are involved in discovery sciences, ensuring drug safety and efficacy, or supporting clinical trials, you will leverage cutting-edge design and process development capabilities to accelerate and deliver best-in-class medicines to patients globally. ROLE SUMMARY 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. ROLE RESPONSIBILITIES 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 colorimetric, 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. QUALIFICATIONS MINIMUM: BS in chemistry, biochemistry, biology or related field Experience using common AI tools, including generative technologies such as ChatGPT or Microsoft Copilot, to support problem solving and enhance productivity. Demonstrated curiosity for exploring how these tools can improve outcomes and understanding of responsible AI practices, including risk management and ethical use. DESIRABLE: 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 ATTRIBUTES DESIRABLE: •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 PHYSICAL/MENTAL REQUIREMENTS Position requires occasional light lifting and periods of standing, sitting or walking. NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS None Work Location Assignment: On Premise The annual base salary for this position ranges from $60,200.00 to $100,400.00. In addition, this position is eligible for participation in Pfizer’s Global Performance Plan with a bonus target of 7.5% of the base salary. We offer comprehensive and generous benefits and programs to help our colleagues lead healthy lives and to support each of life’s moments. Benefits offered include a 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, and health benefits to include medical, prescription drug, dental and vision coverage. Learn more at Pfizer Candidate Site – U.S. Benefits |

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