Commercial Account Manager (UK)

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365.

To learn more, visit www.mattermost.com

Mattermost is seeking a Commercial Account Manager (CAM) – UK to support and accelerate commercial growth across the region. This is a collaborative, territory-aligned sales role that operates alongside Account Executives (AEs).

The CAM independently manages defined commercial sales motions while exercising strong judgment on when to partner with AEs on larger or more complex opportunities. This role is ideal for a commercially driven seller who thrives in a fast-paced SaaS environment and enjoys balancing net-new acquisition, expansion, and renewal management.

What You’ll Do

Inbound Net New Sales

• Own and execute inbound-led net-new opportunities

• Qualify and close small to mid-sized deals for customers not aligned to strategic AE territories

• Run discovery, qualification, objection handling, and closing motions independently

Expansion Ownership

• Lead expansions within existing accounts when scope and complexity allow

• Identify upsell and cross-sell opportunities through customer engagement and usage insights

• Partner with AEs on expansions that become larger, more strategic, or more complex

• Manage inbound expansion requests from existing customers (e.g., incremental license additions)

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