Associate Scientist in Protein Mass Spectrometry

Posted Yesterday
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Groton, CT, USA
In-Office
60K-100K Annually
Junior
Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
We’re in relentless pursuit of breakthroughs that change patients’ lives.
The Role
Conduct protein characterization and native mass spectrometry studies supporting drug discovery. Handle recombinant proteins, investigate protein ligand interactions, maintain open access mass spectrometry systems, process data, troubleshoot technical challenges, document experiments, and communicate findings within multidisciplinary teams.
Summary Generated by Built In
ROLE SUMMARY
Pfizer currently has an open position for an Associate Scientist in Protein Mass Spectrometry (MS) within the Structural Analytical and Molecular Sciences (SAMS) department in Groton, CT. We are seeking a highly motivated individual with strong expertise in biochemistry and experimental protein characterization. Experience in native MS, nanoelectrospray applications or MS characterization of large molecules is a strong plus. The successful candidate will demonstrate scientific proficiency from the bench, be a fast learner of new skills, and work effectively in a matrix team environment.
We are an integrated and highly collaborative team of colleagues with technical expertise across molecular biology, protein biochemistry, biophysics, and structural biology. We have a strong track record of enabling hit-to-lead progression for small molecule modulators of diverse protein targets using integrated biophysical and structural approaches. We actively collaborate with Pfizer drug discovery teams across multiple therapeutic areas by providing comprehensive molecular and structural insights into therapeutic targets, lead molecules, and protein-ligand interactions.
ROLE RESPONSIBILITIES
  • Learn and deploy native MS and other structural MS methods for deep characterization of protein-ligand interactions
  • Handle and manipulate protein samples to enable and execute quantitative and qualitative binding studies.
  • Support and maintain open-access MS systems for a suite of users and assist with data collection and processing where needed.
  • Be part of multi-disciplinary teams to support discovery projects across diverse disease areas.
  • Effective oral and written communication of experimental work and analysis.
  • Perform timely notebook entries and review for completed experiments.

QUALIFICATIONS
  • BS in chemistry, biochemistry, biophysics, molecular biology or related field with ~1-3 years of relevant laboratory experience.
  • Skill and familiarity with handling and manipulating recombinant protein samples
  • Ability to multi-task to balance parallel activities.
  • Ability to troubleshoot scientific and technical challenges and contribute to their resolution.
  • Previous experience with mass spec instrumentation and data analysis is a strong plus.
  • 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.

PHYSICAL/MENTAL REQUIREMENTS
Sitting, standing, lifting, bending, and walking. Ability to perform practical laboratory bench work and work on a computer (while standing or sitting). Ability to perform mathematical calculations and interpret data.
NON-STANDARD WORK SCHEDULE, TRAVEL OR ENVIRONMENT REQUIREMENTS
  • Minimal, if any travel related to this position.
  • Candidate must comply with laboratory safety practices

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 | (uscandidates.mypfizerbenefits.com). Pfizer compensation structures and benefit packages are aligned based on the location of hire. The United States salary range provided does not apply to Tampa, FL or any location outside of the United States.
Relocation assistance may be available based on business needs and/or eligibility.
Candidates must be authorized to be employed in the U.S. by any employer.
U.S. work visa sponsorship (such as TN, O-1, H-1B, etc.) is not available for this role now or in the future.
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. This position requires permanent work authorization in the United States.
Pfizer endeavors to make www.pfizer.com/careers accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process and/or interviewing, please email [email protected] . This is to be used solely for accommodation requests with respect to the accessibility of our website, online application process and/or interviewing. Requests for any other reason will not be returned.
To learn more about acceptable and prohibited uses of AI during the recruitment process, please review our candidate AI-use guidelines available on Pfizer Careers .
Research and Development

Skills Required

  • Bachelor's degree in chemistry, biochemistry, biophysics, molecular biology, or a related field
  • Approximately 1 to 3 years of relevant laboratory experience
  • Skill and familiarity handling and manipulating recombinant protein samples
  • Ability to multitask and balance parallel activities
  • Ability to troubleshoot scientific and technical challenges and contribute to their resolution
  • Experience using common AI tools, including generative technologies such as ChatGPT or Microsoft Copilot
  • Understanding of responsible AI practices, risk management, and ethical use
  • Experience with native mass spectrometry, nanoelectrospray applications, or mass spectrometry characterization of large molecules
  • Previous experience with mass spectrometry instrumentation and data analysis
  • Compliance with laboratory safety practices
  • Permanent authorization to work in the United States without visa sponsorship

What the Team is Saying

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Pfizer Compensation & Benefits Highlights

  • Healthcare Strength — Health coverage is described as comprehensive across medical, dental, vision, and mental‑health support, with strong plan options and provider networks. Feedback suggests these programs are a clear standout within the total rewards package.
  • Retirement Support — Retirement programs feature a 401(k) with company matching plus an additional company retirement contribution. Feedback suggests these elements are consistently highlighted as valuable components of overall compensation.
  • Leave & Time Off Breadth — Paid vacation, holidays, and sick time are often characterized as generous, with some locations offering the ability to purchase additional vacation days. Feedback suggests this breadth contributes meaningfully to work‑life balance.

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The Company
HQ: New York, NY
121,990 Employees
Year Founded: 1848

What We Do

Our purpose ensures that patients remain at the center of all we do. We live our purpose by sourcing the best science in the world; partnering with others in the healthcare system to improve access to our medicines; using digital technologies to enhance our drug discovery and development, as well as patient outcomes; and leading the conversation to advocate for pro-innovation/pro-patient policies.

Why Work With Us

We are the inventors, the problem solvers, the big thinkers — those who surmount any hurdle to deliver breakthrough medicines to the people who are counting on them the most.

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