Pfizer is a multinational research-driven biopharmaceutical company that employs more than 41,000 people around the world. Recent staffing data shows roughly 1,900 new hires alongside about 3,200 departures, indicating a measured approach to reshaping the organization while maintaining a broad talent base across science, manufacturing, and commercial operations. The company continues to balance research, regulatory, and go-to-market resources to support its portfolio of vaccines and therapeutics.
Engineering is Pfizer’s largest single discipline with just over 10,000 employees—about one quarter of the total workforce—reflecting the scale of its research, process development, and manufacturing automation efforts. Business Management (6,600 employees) and Sales & Support (5,100 employees) follow, underscoring the importance of corporate strategy and customer engagement in bringing medicines to market. Operations (4,400) and Healthcare functions such as clinical affairs (3,700) provide the backbone for compliant production and trials, while Marketing & Product (3,100) focuses on brand stewardship. Finance & Administration (2,700) as well as specialized groups in Risk, Safety & Compliance and Quality collectively account for a few thousand more roles, illustrating a diversified but well-balanced departmental spread.
Pfizer’s people are distributed across major U.S. research, manufacturing, and corporate hubs. New York City hosts the largest concentration with just over 3,100 employees, serving as the company’s global headquarters. Significant laboratory and production sites are located in Boston (1,250), Groton, CT (919), Kalamazoo, MI (911), and Seattle, WA (699), each supporting either research or large-scale manufacturing. Additional teams work from San Diego, Philadelphia, Collegeville, Cambridge, and numerous smaller offices and plants worldwide, bringing the remaining headcount to roughly 2,000 in other locations. This footprint highlights a deliberate presence in established life-science clusters across the United States.