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71 principal scientist jobs found

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Pfizer
Mar 18, 2026
Full time
Senior Principal Scientist, Pre-Formulation and Materials Science
Pfizer San Diego, CA, USA
A role at Pfizer is unlike any other. Offering talented individuals the opportunity to own a career with real impact, our people go to work each day in the knowledge that every development signifies real, positive progress. We all believe in our ability to improve the future of healthcare, and in our potential to transform millions of lives. Because in every part of the world, the work we do is reaching everyone, everywhere for almost every medical need. That means not just attracting the best and brightest talent. But also ensuring our colleagues can thrive in an environment and culture where we champion Diversity and Inclusion every day, around the world.
Bausch Health
Feb 27, 2026
Full time
Principal Scientist: Pharmaceutical Science & Technology
Bausch Health USA
Bausch Health Companies Inc. is a global, diversified pharmaceutical company whose mission is to improve people’s lives with our pharmaceutical products. We develop, manufacture and market a range of products primarily in gastroenterology, hepatology, neurology, dermatology, dentistry, aesthetics, and international pharmaceuticals. With our leading durable brands, we are delivering on our commitments to patients, health care providers, other stakeholders and society as we build an innovative company dedicated to advancing global health.
Bausch Health
Feb 27, 2026
Full time
Principal Scientist: Pharmaceutical Science & Technology
Bausch Health USA
Bausch Health Companies Inc. is a global, diversified pharmaceutical company whose mission is to improve people’s lives with our pharmaceutical products. We develop, manufacture and market a range of products primarily in gastroenterology, hepatology, neurology, dermatology, dentistry, aesthetics, and international pharmaceuticals. With our leading durable brands, we are delivering on our commitments to patients, health care providers, other stakeholders and society as we build an innovative company dedicated to advancing global health.
Sanofi
Mar 18, 2026
Full time
Analytical Principal Scientist (Analytical team lead)
Sanofi Cambridge, MA, USA
Sanofi is comprised of three core business units: Specialty Care, Vaccines and General Medicines. Consumer Healthcare will become a standalone business unit. Around the world, more than 100,000 people at Sanofi are dedicated to making a difference in patients' daily lives, wherever they live, and enabling them to enjoy a healthier life.
Pfizer
Mar 18, 2026
Full time
Principal Scientist, Pharmaceutical Research & Development
Pfizer Bothell, WA, USA
A role at Pfizer is unlike any other. Offering talented individuals the opportunity to own a career with real impact, our people go to work each day in the knowledge that every development signifies real, positive progress. We all believe in our ability to improve the future of healthcare, and in our potential to transform millions of lives. Because in every part of the world, the work we do is reaching everyone, everywhere for almost every medical need. That means not just attracting the best and brightest talent. But also ensuring our colleagues can thrive in an environment and culture where we champion Diversity and Inclusion every day, around the world.
Pfizer
Mar 18, 2026
Full time
Principal Scientist, Analytical Project Lead - Peptides
Pfizer Groton, CT, USA
A role at Pfizer is unlike any other. Offering talented individuals the opportunity to own a career with real impact, our people go to work each day in the knowledge that every development signifies real, positive progress. We all believe in our ability to improve the future of healthcare, and in our potential to transform millions of lives. Because in every part of the world, the work we do is reaching everyone, everywhere for almost every medical need. That means not just attracting the best and brightest talent. But also ensuring our colleagues can thrive in an environment and culture where we champion Diversity and Inclusion every day, around the world.
Zoetis
Mar 18, 2026
Senior Scientist/Principal Scientist – Clinical Veterinarian
Zoetis Kalamazoo, MI, USA
Zoetis 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 or any other protected classification. Disabled individuals are given an equal opportunity to use our online application system. We offer reasonable accommodations as an alternative if requested by an individual with a disability.
Zoetis
Mar 18, 2026
PK/PD Principal Scientist
Zoetis Remote
Zoetis 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 or any other protected classification. Disabled individuals are given an equal opportunity to use our online application system. We offer reasonable accommodations as an alternative if requested by an individual with a disability.
Johnson & Johnson Services, Inc
Mar 17, 2026
Full time
Principal Scientist, Protein Optimization
Johnson & Johnson Services, Inc Cambridge, MA, USA
Johnson & Johnson is the world’s most broadly based healthcare organization and includes more than 275+ companies focused in medical devices, pharmaceuticals, and consumer products.
Johnson & Johnson Services, Inc
Mar 17, 2026
Full time
Senior Principal Scientist, AI/ML for Drug Discovery and Development - Data Sciences Analytics & Insights, Data Sciences
Johnson & Johnson Services, Inc Spring House, PA, USA
Johnson & Johnson is the world’s most broadly based healthcare organization and includes more than 275+ companies focused in medical devices, pharmaceuticals, and consumer products.
Johnson & Johnson Services, Inc
Mar 17, 2026
Full time
Principal Scientist, Protein Optimization
Johnson & Johnson Services, Inc Cambridge, MA, USA
Johnson & Johnson is the world’s most broadly based healthcare organization and includes more than 275+ companies focused in medical devices, pharmaceuticals, and consumer products.
Hikma
Mar 16, 2026
Full time
Principal Scientist
Hikma Cherry Hill Township, NJ, USA
As a developer, manufacturing, and supplier of essential medicines, Hikma Pharmaceuticals USA Inc. and its affiliates’ mission is to bring Better Health. Within Reach. Every Day.
GlaxoSmithKline
Mar 16, 2026
Full time
Principal Scientist/Associate Director
GlaxoSmithKline Collegeville, PA, USA
We are a focused biopharma company. We prevent and treat disease with vaccines, specialty and general medicines. We focus on the science of the immune system and advanced technologies, investing in four core therapeutic areas (infectious diseases, HIV, respiratory/immunology and oncology).
GlaxoSmithKline
Mar 16, 2026
Full time
Principal Scientist, Drug Product Steriles Primary Packaging
GlaxoSmithKline Collegeville, PA, USA
We are a focused biopharma company. We prevent and treat disease with vaccines, specialty and general medicines. We focus on the science of the immune system and advanced technologies, investing in four core therapeutic areas (infectious diseases, HIV, respiratory/immunology and oncology).
Gilead
Mar 16, 2026
Full time
Principal Scientist — Reference Standard & Critical Reagents Lead
Gilead Foster City, CA, USA
As a worldwide workforce we are deeply committed to helping solve some of today’s biggest healthcare challenges, offering solutions for patients suffering from life-threatening diseases such as HIV/AIDS, liver disease, oncology and respiratory disease. At our core lies a corporate culture committed to science and patients, and an employee environment that fosters innovation, diversity and a commitment to the personal and professional development of all our colleagues. As we grow, we are continually looking to connect with outstanding individuals who are interested in joining our intellectually stimulating and socially responsible team. Successful colleagues at Gilead come from all backgrounds, have a range of perspectives and thrive in an agile and rapidly evolving environment.
Genentech
Mar 16, 2026
Full time
Principal Scientist, Lab Head, Synthetic Immunity
Genentech San Francisco, CA, USA
Genentech, now a member of the Roche Group, is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious or life-threatening medical conditions. 
Genentech
Mar 16, 2026
Full time
Principal Scientist - Synthetic Molecule Process Chemistry, Genentech Research
Genentech San Francisco, CA, USA
Genentech, now a member of the Roche Group, is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious or life-threatening medical conditions. 
Genentech
Mar 16, 2026
Full time
Senior Principal Scientist, Peptide Therapeutics
Genentech San Francisco, CA, USA
Genentech, now a member of the Roche Group, is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious or life-threatening medical conditions. 
Genentech
Mar 16, 2026
Full time
Senior Principal Scientist, Peptide Therapeutics
Genentech San Francisco, CA, USA
Genentech, now a member of the Roche Group, is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious or life-threatening medical conditions. 
Genentech
Mar 16, 2026
Full time
Principal Scientist, Peptide Therapeutics
Genentech San Francisco, CA, USA
Genentech, now a member of the Roche Group, is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious or life-threatening medical conditions. 
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