How Many People Work at Onto Innovation? Headcount and Employee Trends

Onto Innovation designs and manufactures process-control and inspection equipment for the semiconductor industry. The company maintains a global workforce of roughly 583 employees and recorded 56 confirmed hires versus 32 departures over the most recent twelve-month period, signaling modest net growth. With an employee base that blends engineering talent, operations specialists, and customer-facing teams, the organization continues to scale in step with demand for advanced chip-manufacturing solutions.

Engineering is the largest function at Onto Innovation with 275 employees, accounting for about 47% of total headcount and highlighting the technical depth required for metrology and inspection systems. Operations (57 employees) and Sales & Support (56 employees) provide the next-largest groups, each representing just under 10% of staff and underscoring the importance of strong supply-chain execution and customer service. Information Technology (42), Marketing & Product (37), Finance & Administration (34), and Business Management (31) create a balanced mix of enabling teams, while Human Resources, Quality, and an "Other" category collectively make up the remaining 9% of employees. The distribution shows a company weighted toward product development yet supported by a full set of corporate functions.

More than 60% of Onto Innovation’s workforce (365 employees) is listed under "Other," indicating a sizable remote or globally dispersed contingent that supports customers across major chip-manufacturing regions. Among defined sites, the largest U.S. presence is in San Jose, California, with 47 employees, followed by Boston, Massachusetts (37), Minneapolis, Minnesota (33), and the broader San Francisco Bay Area (33). Additional clusters are located in Milpitas, CA; Wilmington, MA; Bend, OR; Fremont, CA; and St. Paul, MN. This geographic profile suggests a hub-and-spoke model anchored in key semiconductor corridors while maintaining flexibility to service clients worldwide.