How Many People Work at F5? Headcount and Employee Trends

F5 is an information-technology company known for application security and multi-cloud networking solutions. The organization employs roughly 4,100 people worldwide and has kept its workforce size steady, adding and losing an equal number of employees. This balanced trend suggests a focus on maintaining critical expertise while selectively bringing in new talent to support strategic initiatives.

Engineering is the largest group at F5 with 1,566 employees, underscoring the company’s emphasis on product development and infrastructure. Customer-facing functions also feature prominently, with 907 people in Sales and Support and 411 in Marketing and Product. Corporate services such as Information Technology (338), Business Management (226), Finance and Administration (184), Operations (115), Human Resources (111), Consulting (79), and a miscellaneous cohort of 126 round out the staff, illustrating a well-rounded mix of technical and business capabilities.

F5’s workforce is widely distributed, though the company retains a strong presence in the Pacific Northwest with 803 employees in Seattle and 163 in Spokane. Additional U.S. hubs include the San Francisco Bay Area (112), San Jose (109), and Boston (30). Internationally, talent clusters in Hyderabad (92), Singapore (104), Bengaluru (57), and Israel (47). A sizeable portion of employees—2,546 people—work in other cities or operate remotely, highlighting the firm’s geographically flexible operating model.