Jobs at Mattermost
Secure Collaboration for Technical Teams
About Mattermost
as of Oct 2026Sovereign Operations & AI for Critical Infrastructure and National Security[1]
Mattermost provides a secure, zero-trust collaboration and AI automation platform designed for mission-critical operations in national security, critical infrastructure, and regulated enterprises. It offers complete data and operational control, allowing organizations to deploy in private cloud, self-hosted, or air-gapped environments.[1]
Product
The platform integrates secure messaging, workflow automation, task management, and sovereign AI agents for real-time communication and human-machine teaming. It emphasizes data sovereignty, allowing customers to own their data, models, and keys, and can be deployed anywhere, including fully disconnected classified networks.[2]
Sells to: National security and critical infrastructure enterprises, public sector, intelligence community, regulated enterprises[2]
Tech
- open source[3]
[ Open roles ]
- Senior Full Stack EngineerRemote
Senior Full Stack Engineer at Mattermost to build and scale the core web platform. Responsibilities include architecting and building full-stack features using Go, React, and TypeScript, and leveraging AI coding agents for development.
- Senior Mobile EngineerRemote
Senior Mobile Engineer at Mattermost responsible for the mobile experience in defense, intelligence, and critical infrastructure sectors. Focuses on improving reliability and performance in constrained network environments, architecting for DDIL scenarios, and enhancing data synchronization and recovery.
- Account Manager - FederalRemote
Federal Account Manager at Mattermost responsible for managing expansion and renewal motions within existing federal accounts. This role involves identifying upsell and cross-sell opportunities, managing inbound requests, and ensuring smooth, on-time renewals by becoming a trusted advisor to customers.
- Grc ManagerRemote
Mattermost is hiring a GRC Manager to own and modernize their governance, risk, and compliance program for federal and commercial markets. This role involves hands-on compliance work, coordinating with internal teams and external auditors, and managing risk and vendor programs. The goal is to scale compliance programs through automation and AI.
- Technical Sales Engineer/ LeadRemote
Mattermost is seeking a Technical Sales Engineer/Lead to join their team in Tokyo, Japan. This role involves leading technical demonstrations, serving as a strategic partner to the sales team, and architecting and deploying solutions within complex environments.
- Senior Full Stack EngineerRemote
Senior Full Stack Engineer at Mattermost to build and scale the core web platform for defense and critical infrastructure sectors. Responsibilities include architecting and building full-stack features using Go, React, and TypeScript, and leveraging AI coding agents in daily workflows.
- Staff Full Stack EngineerRemote
Staff Full Stack Engineer at Mattermost responsible for setting the technical direction and scaling the core web platform. This role involves driving architecture and technical strategy across Go backend and React/TypeScript frontend, with a focus on security, compliance, and reliability for defense and critical infrastructure sectors. Engineers are expected to be fluent with AI coding agents.
- Staff Full Stack EngineerRemote
Staff Full Stack Engineer at Mattermost responsible for setting technical direction and scaling the core web platform. This role involves driving architecture and technical strategy across Go backend and React/TypeScript frontend, with a focus on security, compliance, and reliability for defense and critical infrastructure sectors. Engineers are expected to be fluent with AI coding agents.
- Senior Technical Account Manager (federal)Remote
Senior Technical Account Manager at Mattermost, serving U.S. Federal and enterprise customers. This role ensures successful deployment, integration, and secure operation of the Mattermost platform in mission-critical environments. The position requires expertise in infrastructure, cybersecurity, and DevSecOps, acting as a liaison between engineering, product, and customer teams.
- Senior Account Executive - Federal (intelligence Community Focus)Remote
Senior Account Executive for Mattermost, focusing on the U.S. Intelligence Community. This quota-carrying role involves strategic selling, renewal expansion, and net-new growth within IC agencies and related organizations. Requires deep IC domain expertise and established relationships with agency stakeholders and Federal Systems Integrators.