How Many People Work at Mattermost? Headcount and Employee Trends

• Mattermost is a secure collaboration platform designed for mission-critical operations, positioned as a leader in the public sector and defense markets.
• In April 2026, Mattermost appointed Matt Mandrgoc as Vice President of Federal to drive growth across defense, civilian, and intelligence agencies.
• The company has expanded its operations in the Asia-Pacific region by establishing Mattermost Japan KK and launched 'Mission Operations for Microsoft' to support national security objectives.
• Mattermost's ideal buyers are government and defense agencies seeking secure, self-hosted collaboration solutions to enhance operational resilience and meet compliance requirements, making them a key player in the ongoing digital modernization initiatives.

Mattermost's workforce is structured across ten departments, with Engineering leading at 16 employees, followed by Sales with 9 and Information Technology at 8. This distribution reflects a strong emphasis on technical and customer-facing roles, supporting the company's software development initiatives. The presence of diverse departments such as Community and Social Services, Operations, and Human Resources indicates a balanced approach to operational and employee engagement functions.

The company's geographic footprint spans ten locations, with the highest headcounts in San Francisco, CA (3), and Irvine, CA (2). A significant portion of the workforce is categorized under 'Other,' suggesting a distributed or remote model that accommodates various locations. This distribution highlights a strategic approach to talent acquisition, allowing Mattermost to leverage a wide geographic reach while maintaining a concentrated presence in key tech hubs.