Senior Account Executive (Enterprise)

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 Senior Account Executive, Enterprise to own and grow a portfolio of strategic enterprise accounts across the Americas — with a sharp focus on net-new pipeline generation, executive-level engagement, and complex deal execution. This is a hunter-first role. You will be responsible for identifying and closing new enterprise logos, expanding Mattermost’s footprint within high-value accounts, and navigating multi-stakeholder buying processes across IT, security, procurement, and executive leadership. You’ll work closely with defense-aligned prospects and Fortune 500 customers who rely on...