How Many People Work at Five9? Headcount and Employee Trends

Five9 is a provider of cloud contact-center software that supports businesses in managing and optimizing customer interactions. The company reports a global workforce of roughly 1,671 employees, with 103 recent hires balanced against 158 departures that produced a modest net reduction in overall headcount. This movement suggests ongoing adjustments as the organization scales its platform, customer base, and internal operations. The employee mix spans technical, customer-facing, and corporate functions needed to build, sell, and support Five9’s software suite.

Engineering is the largest single group at Five9, employing about 571 people—close to one-third of total staff—reflecting the product-driven nature of the business. Sales and Support forms the next biggest cohort with 481 employees, underscoring the importance of customer acquisition and post-sale assistance in the contact-center space. Mid-sized teams such as Marketing & Product (147 employees), Finance & Administration (94), Business Management (87), and Information Technology (83) provide essential go-to-market, governance, and infrastructure capabilities. Smaller yet critical functions include Program & Project Management (62), Operations (60), Human Resources (36), and an “Other” category (50) that captures specialized roles not classified elsewhere.

Five9’s workforce is distributed across several hubs as well as a sizable remote or unclassified segment. Approximately 1,187 employees fall into the “Other” category, indicating a large contingent of remote or geographically dispersed staff. Among named sites, San Francisco houses the largest concentration at 231 employees, followed by Manila with 60. Additional offices in San Ramon, Porto, Pleasanton, Austin, San Jose, New York, and Chicago range from 18 to 53 employees each, illustrating a network of smaller regional outposts that support engineering, customer success, and corporate teams.