Pfizer is a research-driven biopharmaceutical company that employs roughly 41,000 people across its global operations. Current staffing records indicate about 1,400 recent hires and close to 2,900 departures, reflecting a steady recalibration of resources while preserving a broad talent base in science, manufacturing, and commercial roles. The organization maintains a balanced mix of research, regulatory, and go-to-market expertise to support its portfolio of vaccines and therapeutics.
Engineering is Pfizer’s largest discipline with just over 10,000 employees—approximately one quarter of the total workforce—underscoring the scale of its research, process development, and manufacturing automation efforts. Business Management (6,600 employees) and Sales & Support (5,100) follow, highlighting the importance of 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, Risk/Safety/Compliance, and Quality collectively account for several thousand additional 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 5,100 employees, serving as the company’s global headquarters. Significant laboratory and production sites are located in Boston, Kalamazoo, Groton, and Seattle, each supporting either research or large-scale manufacturing. Additional teams work from San Diego, Philadelphia, Collegeville, Cambridge, and numerous other offices and plants worldwide, giving the company a deliberate presence in established life-science clusters and manufacturing centers.