Mattermost

Mattermost builds a zero-trust collaborative workflow platform designed for defense, intelligence, national security, critical infrastructure, and regulated enterprises. The company serves mission-critical teams across government, financial services, healthcare, and energy sectors, providing solutions that run self-hosted, in private clouds, or fully air-gapped. Its platform delivers secure messaging, workflow automation, task management, sovereign AI agents, audio and screen sharing, and project management while allowing organizations to retain full control of their data, models, and encryption keys.

In the realm of AI and machine learning, Mattermost integrates sovereign AI agents that summarize content, enrich alerts, and execute actions using user-selected LLM providers or self-hosted models within air-gapped environments. Furthermore, its engineering culture incorporates AI-forward practices, requiring engineers to fluently utilize AI coding agents like Claude Code and Cursor for scaffolding, code review, test generation, and workflows.

The open roles indicate that Mattermost is building engineering and compliance teams focused on its core web platform and governance programs. The available positions include Staff Full Stack Engineer, Senior Full Stack Engineer, and GRC Manager. These openings are located in the United States and Toronto, Ontario, Canada, covering senior and staff-level technical ownership.