Working with Us
Challenging. Meaningful. Life-changing. Those aren't words that are usually associated with a job. But working at Bristol Myers Squibb is anything but usual. Here, uniquely interesting work happens every day, in every department. From optimizing a production line to the latest breakthroughs in cell therapy, this is work that transforms the lives of patients, and the careers of those who do it. You'll get the chance to grow and thrive through opportunities uncommon in scale and scope, alongside high-achieving teams. Take your career farther than you thought possible.
Bristol Myers Squibb recognizes the importance of balance and flexibility in our work environment. We offer a wide variety of competitive benefits, services and programs that provide our employees with the resources to pursue their goals, both at work and in their personal lives. Read more: careers.bms.com/working-with-us .
Principal Scientist, Bioassay and Impurity Assay Development
Our Biologics Development team is responsible for development and transfer of safe, efficient, and approvable biologics drug substance manufacturing processes and analytical methods for all of BMS' biologics portfolio. We work closely with other BMS units to support our clinical pipeline through to late stages of clinical development. Innovation is at the core of what we do, with an intense focus on efficiency, speed, robustness, and approvability of our processes and methods. Here, you'll get the chance to grow and thrive through opportunities uncommon in scale and scope, pursue innovative ideas, and advance professionally alongside some of the brightest minds in Biopharma
Description:
Bristol Myers Squibb is a global leader in Biotherapeutics for Immuno-Oncology. The Potency and Impurity Analytical Development department serves as the central hub for biological potency assay and impurity assay development, comprehensive biological characterization, and clinical lot release. In support of our expanding biologics pipeline, we are seeking seasoned professionals who are dedicated to advancing recombinant therapeutics to address critical unmet medical needs.
The Principal Scientist will lead the development of advanced potency and impurity assays to support the company's portfolio of preclinical and clinical-stage biologics. This position demands a deep understanding of cell biology, immunology, and molecular biology, as well as expertise in designing and developing cell-based assays for protein function analysis. Success in this role requires strong collaboration with early discovery, process sciences, analytical teams, Manufacturing Sciences and Technology, and Quality Control.
Responsibilities:
Serve as the primary lead for bioassay development across both early and late stage development programs, including design and qualification of assays for biological characterization and validation, and partner closely with stakeholders across the organization.
Oversee experimental planning, execution, data review and analysis, technical documentation, and contribute to regulatory submissions.
Participate in the formulation of analytical control strategies; proactively address technical, regulatory, and business requirements.
Ensure comprehensive documentation of results and maintain laboratory instrumentation in compliance with GMP standards.
Promote innovation, scientific and operational excellence, and continuous learning within the team.
Qualifications:
PhD in Immunology, Cell Biology, Molecular Biology, or a related scientific discipline with 4-6 years of relevant industry experience; or a Master's degree with 6-9 years of experience; or a Bachelor's degree with 9-12 years of experience.
Typically possesses 4-6+ years of direct experience in biopharmaceutical development.
Demonstrated strong scientific expertise in cell-based assay development.
Experience in developing CMC strategies for potency and/or impurities.
Proficiency in developing ELISA methods for QC lot release of potency and impurities.
Experience with BIACORE or FACS is highly desirable.
Detail-oriented and committed to delivering high-quality results.
Excellent interpersonal and communication skills.
Knowledge of regulatory and compliance guidelines.
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If you come across a role that intrigues you but doesn't perfectly line up with your resume, we encourage you to apply anyway. You could be one step away from work that will transform your life and career.
Compensation Overview:
New Brunswick - NJ - US: $134,900 - $163,461
The starting compensation range(s) for this role are listed above for a full-time employee (FTE) basis. Additional incentive cash and stock opportunities (based on eligibility) may be available. The starting pay rate takes into account characteristics of the job, such as required skills, where the job is performed, the employee's work schedule, job-related knowledge, and experience. Final, individual compensation will be decided based on demonstrated experience.
Eligibility for specific benefits listed on our careers site may vary based on the job and location. For more on benefits, please visit https://careers.bms.com/life-at-bms/.
Benefit offerings are subject to the terms and conditions of the applicable plans in effect at the time and may require enrollment. Our benefits include:
Health Coverage: Medical, pharmacy, dental, and vision care.
Wellbeing Support: Programs such as BMS Well-Being Account, BMS Living Life Better, and Employee Assistance Programs (EAP).
Financial Well-being and Protection: 401(k) plan, short- and long-term disability, life insurance, accident insurance, supplemental health insurance, business travel protection, personal liability protection, identity theft benefit, legal support, and survivor support.
Work-life benefits include:
Paid Time Off
US Exempt Employees: flexible time off (unlimited, with manager approval, 11 paid national holidays (not applicable to employees in Phoenix, AZ, Puerto Rico or Rayzebio employees)
Phoenix, AZ, Puerto Rico and Rayzebio Exempt, Non-Exempt, Hourly Employees: 160 hours annual paid vacation for new hires with manager approval, 11 national holidays, and 3 optional holidays
Based on eligibility*, additional time off for employees may include unlimited paid sick time, up to 2 paid volunteer days per year, summer hours flexibility, leaves of absence for medical, personal, parental, caregiver, bereavement, and military needs and an annual Global Shutdown between Christmas and New Years Day.
All global employees full and part-time who are actively employed at and paid directly by BMS at the end of the calendar year are eligible to take advantage of the Global Shutdown.
*Eligibility Disclosure: T he summer hours program is for United States (U.S.) office-based employees due to the unique nature of their work. Summer hours are generally not available for field sales and manufacturing operations and may also be limited for the capability centers. Employees in remote-by-design or lab-based roles may be eligible for summer hours, depending on the nature of their work, and should discuss eligibility with their manager. Employees covered under a collective bargaining agreement should consult that document to determine if they are eligible. Contractors, leased workers and other service providers are not eligible to participate in the program.
Uniquely Interesting Work, Life-changing Careers
With a single vision as inspiring as Transforming patients' lives through science , every BMS employee plays an integral role in work that goes far beyond ordinary. Each of us is empowered to apply our individual talents and unique perspectives in a supportive culture, promoting global participation in clinical trials, while our shared values of passion, innovation, urgency, accountability, inclusion and integrity bring out the highest potential of each of our colleagues.
On-site Protocol
BMS has an occupancy structure that determines where an employee is required to conduct their work. This structure includes site-essential, site-by-design, field-based and remote-by-design jobs. The occupancy @type that you are assigned is determined by the nature and responsibilities of your role:
Site-essential roles require 100% of shifts onsite at your assigned facility. Site-by-design roles may be eligible for a hybrid work model with at least 50% onsite at your assigned facility. For these roles, onsite presence is considered an essential job function and is critical to collaboration, innovation, productivity, and a positive Company culture. For field-based and remote-by-design roles the ability to physically travel to visit customers, patients or business partners and to attend meetings on behalf of BMS as directed is an essential job function.
Supporting People with Disabilities
BMS is dedicated to ensuring that people with disabilities can excel through a transparent recruitment process, reasonable workplace accommodations/adjustments and ongoing support in their roles. Applicants can request a reasonable workplace accommodation/adjustment prior to accepting a job offer. If you require reasonable accommodations/adjustments in completing this application, or in any part of the recruitment process, direct your inquiries to adastaffingsupport@bms.com . Visit careers.bms.com/ (https://careers.bms.com/eeo-accessibility) eeo-accessibility to access our complete Equal Employment Opportunity statement.
Candidate Rights
BMS will consider for employment qualified applicants with arrest and conviction records, pursuant to applicable laws in your area.
If you live in or expect to work from Los Angeles County if hired for this position, please visit this page for important additional information: https://careers.bms.com/california-residents/
Data Protection
We will never request payments, financial information, or social security numbers during our application or recruitment process. Learn more about protecting yourself at https://careers.bms.com/fraud-protection .
Any data processed in connection with role applications will be treated in accordance with applicable data privacy policies and regulations.
If you believe that the job posting is missing information required by local law or incorrect in any way, please contact BMS at TAEnablement@bms.com . Please provide the Job Title and Requisition number so we can review. Communications related to your application should not be sent to this email and you will not receive a response. Inquiries related to the status of your application should be directed to Chat with Ripley.
R1599444 : Principal Scientist, Bioassay and Impurity Assay Development Company: Bristol-Myers Squibb
Req Number: R1599444
Updated: 2026-04-13 02:39:16.741 UTC
Location: New Brunswick-NJ
Bristol Myers Squibb is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status, pregnancy, citizenship, marital status, gender expression, genetic information, political affiliation, or any other characteristic protected by law.
