Senior Technical Account Manager (Germany)

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 Technical Account Manager (TAM) is a customer-facing technical leader responsible for ensuring the successful deployment, integration, and secure operation of the Mattermost platform for enterprise, public sector, and defense clients across Germany and Europe . This role combines deep expertise in infrastructure, cybersecurity, and DevSecOps with strong customer engagement and project leadership skills. The TAM acts as a trusted technical advisor—bridging engineering, product, and customer teams to drive secure, compliant, and mission-critical implementations in highly regulat