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 an experienced and driven Federal Solution Architect to serve as the technical face of Mattermost within the U.S. Defense and Intelligence Community (IC). In this role, you will provide hands-on technical sales support to federal customers and partners, architect solutions that meet the unique requirements of classified and mission-critical environments, and drive the retention and growth of Mattermost's federal revenue base.
This is a high-impact, customer-facing role that sits at the intersection of technical expertise and strategic sales. You will partner closely with Federal Account Executives to advance opportunities, deepen customer relationships, and ensure Mattermost remains the platform of choice for secure collaboration across Defense and Intelligence organizations. The long-term roadmap for this position is progression to a senior-level (L6) Solution Architect.
- Serve as the primary technical resource for Mattermost's U.S. Defense and Intelligence customers, partners, and prospects.
- Lead technical discovery sessions, product demonstrations, architecture reviews, and proof-of-concept engagements tailored to federal environments.
- Translate complex customer requirements — including compliance mandates (FedRAMP, IL2, IL4/5, IL6, PL3, DISA SRG, Zero Trust) — into actionable Mattermost solution architectures.
- Partner with Federal Account Executives to develop and execute technical win strategies for new and expansion opportunities.
- Act as a trusted technical advisor to existing federal accounts, proactively identifying risks and opportunities to strengthen customer relationships and retention.
- Support deployment planning, integration design, and technical onboarding for Defense and IC customers operating in on-premise, air-gapped, and private cloud environments.
- Collaborate with Customer Success, Support, and Engineering teams to resolve technical escalations and ensure customer satisfaction.
- Design and document reference architectures for Mattermost deployments within DoD and IC infrastructure, including Platform One, Big Bang, and other DevSecOps frameworks and platforms.
- Provide technical guidance on integrations with tools commonly used in federal environments (e.g., GitLab, Jira, ServiceNow, SIEM platforms, and CI/CD pipelines).
- Represent Mattermost at federal industry events, conferences, and partner engagements.
- Contribute product feedback and market intelligence from the field to inform the Mattermost product roadmap.
- Enable defense contractors, system integrators, and channel partners with the technical knowledge and tools needed to position, deploy, and support Mattermost solutions.
- Support joint solution development and co-selling motions with key federal partners.
- 5+ years of experience in a Solution Architect, Sales Engineer, Pre-Sales Engineer, or comparable technical sales role — with a strong focus on U.S. Federal / Defense / Intelligence customers.
- Deep understanding of federal IT environments, including on-premise, air-gapped, and classified network deployments.
- Familiarity with federal compliance frameworks and security standards such as FedRAMP, DISA SRG (IL4/IL5/IL6), NIST 800-53, CMMC, and Zero Trust Architecture.
- Hands-on experience with Linux-based infrastructure, Kubernetes/OpenShift (e.g., Platform One / Big Bang), and container-based deployments.
- Working knowledge of networking, identity management (SAML/SSO/LDAP), database administration (PostgreSQL), and DevSecOps toolchains.
- Ability to write simple integrations and automations using languages such as Python, Go, or JavaScript, and familiarity with REST APIs and webhooks.
- Excellent communication and presentation skills — able to convey complex technical concepts to both technical and executive audiences.
- Self-starter with the ability to operate independently in a fast-paced, remote-first environment.
- Willingness to travel to customer sites, partner events, and industry conferences as needed (up to 25-40%).
- U.S. citizenship required. Must be eligible to obtain and maintain a U.S. government security clearance.
- Active U.S. security clearance (Secret or above); existing TS/SCI highly desired.
- Prior experience supporting DoD programs such as Platform One, or deployments within the Intelligence Community.
- Experience with Mattermost or similar on-prem collaboration platforms (Wickr, Jabber, Skype for Business, Rocket.Chat, Element/Matrix).
- Background in secure messaging, C2 (Command and Control) systems, or operational technology (OT) environments.
- Certifications such as AWS Solutions Architect, CKA/CKAD, CISSP, Security+, or equivalent.
- Experience working at or selling into defense contractors, system integrators, or federal agencies.
- Mission-driven work: Your contributions directly support national security and the teams who protect it.
- Growth opportunity: Clear path from this role to a senior-level (L6) Solution Architect position.
- Remote-first culture: Work from anywhere in the U.S. with a globally distributed, high-trust team.
- Open source at the core: Be part of a vibrant developer community shaping the future of secure collaboration.
- High impact: Join at a critical inflection point for Mattermost's federal business, with direct influence on a $15M+ revenue segment.
Base Salary Range: $120,000 – $180,000
On-target earnings (OTE): $147,000 to $230,000 USD, uncapped
Mattermost takes a market-based approach to pay. Compensation is determined based on skills, experience, qualifications, and work location. Ranges may be updated as market conditions evolve.
This role may require obtaining and maintaining a U.S. government security clearance. Candidates must meet federal eligibility requirements to be considered. For more information visit Security Clearances — United States Department of State
Applicants must meet eligibility requirements for access to export-controlled information as defined by U.S. export control laws, including EAR and ITAR. For more information visit the Bureau of Industry and Security and the Directorate of Defense Trade Controls.
Mattermost is an EEO Employer, we are a remote-first, open-source company.
We are continually working to expand our hiring in more countries and regions, ensuring compliance with local laws and regulations, which takes time.
Mattermost values your unique perspective—we welcome all applicants. We encourage individuals from all backgrounds to apply and are committed to assessing candidates based on their skills and qualifications. We do not tolerate discrimination against staff or applicants based on race, religion, national origin, age, disability, pregnancy status, veteran status, or other personal characteristics.
If you require accommodations during the interview process, please let us know—we're happy to assist.
