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) to serve as a trusted technical advisor to our U.S. Federal and enterprise customers . In this role, you will ensure the successful deployment, integration, and secure operation of the Mattermost platform in mission-critical and high-security environments .
You will combine expertise in infrastructure, cybersecurity, and DevSecOps with strong customer engagement and project leadership skills. As a strategic partner, you will bridge engineering, product, and customer teams , driving secure, compliant, and scalable implementations that enable organizations to collaborate with confidence.
An active U.S. government Secret or TS/SCI clearance is a significant advantage for this position. We also welcome technically strong candidates who meet the eligibility requirements to obtain a clearance.
Key Responsibilities
Own Technical Customer Success
Serve as the primary technical advisor for strategic U.S. Federal and defense customers.
Build trusted relationships with technical leaders, system administrators, security teams, and executive stakeholders.
Drive successful onboarding, adoption, platform optimization, and long-term customer value.
Develop technical success plans aligned with customer missions, operational requirements, and business objectives.
Solve Complex Technical Challenges
Guide customers through deployments, upgrades, integrations, and troubleshooting across on-premises, cloud, hybrid, and air-gapped environments.
Work hands-on with Linux infrastructure, networking, containers, authentication systems, and deployment configurations.
Troubleshoot complex technical issues, partnering with Engineering and Support to drive resolution.
Help customers improve platform reliability, security, performance, and scalability.
Bring a Forward-Deployed Engineering Mindset
Work directly with customers, including on-site engagements when needed, to understand and address complex operational requirements.
Translate customer challenges into practical technical solutions, configurations, integrations, or automation.
Develop reusable scripts, technical playbooks, and deployment best practices.
Operate independently in complex environments while collaborating closely with internal technical teams.
Bring field insights and customer requirements back to Product and Engineering to influence platform improvements.
Drive Adoption and Customer Value
Identify opportunities to expand Mattermost adoption across teams, workflows, and mission-critical use cases.
Conduct technical reviews, health assessments, and proactive optimization sessions.
Help customers maximize their investment through platform integrations, workflow automation, and operational best practices.
Required Qualifications
Experience in a technical customer-facing role such as Technical Account Manager, Solutions Engineer, Customer Engineer, Technical Consultant, Support Engineer, or Forward Deployed Engineer.
Strong hands-on technical experience with Linux, networking, infrastructure troubleshooting, and enterprise software deployments.
Familiarity with containers, cloud infrastructure, or modern application deployment environments.
Ability to…