Senior Account Executive - Federal (US ARMY)

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 – Federal (US Army Focus) to own and expand one of our most strategic territories, centered on the United States Army. This is a quota-carrying individual contributor role focused exclusively on strategic selling, renewal expansion, and net-new growth across the Army ecosystem. The territory includes a significant multi-million-dollar renewal footprint and substantial opportunity for expansion across Army commands, program offices, and mission-aligned organizations. The ideal candidate brings deep Army domain expertise, established relationships across acquisition and mission stakeholders, and experience working with Federal Systems Integrators (FSIs) to accelerate program-level adoption. What You'll Do Own and Grow the US ARMY Territory Serve as the primary seller responsible for Mattermost's US Army business, including Army commands, program executive offices (PEOs), program offices, and mission-aligned stakeholders Develop and execute multi-year account strategies aligned to Army modernization and mission priorities Expand Mattermost's footprint across additional commands and programs through strategic penetration and executive alignment Drive Strategic Renewals and Expansion Outcomes Maintain executive ownership of large-scale renewals and expansion motions across the territory Partner closely with an Account Manager who supports renewal execution, while retaining accountability for strategic renewal outcomes Identify cross-program expansion opportunities within existing deployments Close Complex Enterprise SaaS Transactions Lead sophisticated, multi-threaded sales cycles involving technical validation, security review, contracting workflows, and executive sponsorship Navigate Federal procurement environments, including FAR/DFARS requirements and common contract vehicles (IDIQs, GWACs, OTAs) Build strong internal deal governance and forecasting discipline through Salesforce Execute a Federal Partner Ecosystem Motion Develop and manage strategic co-sell relationships with major Federal Systems Integrators (FSIs), including Lockheed Martin, Raytheon, Northrop Grumman, Leidos, SAIC, LMI, and others Partner effectively with Fed