Role requires building and owning full-stack features (Go backend and React/TypeScript frontend), designing and consuming REST and WebSocket APIs, maintaining security and compliance for government/enterprise clients, and using AI coding agents as part of the development workflow. Position is remote-first and requires legal authorization to work in Canada.

Build and scale full-stack features across Go, React, TypeScript, PostgreSQL, and Redis. Use AI coding agents as part of daily workflow, design and consume REST and WebSocket APIs, maintain required security/compliance standards, own testing strategy, and contribute to Mattermost's open-source codebase in a remote-first environment.

Mattermost is hiring a Technical Sales Engineer / Lead to be the first technical hire in Japan and the Indo-Pacific region. The role leads presales architecture, product demonstrations, and technical evaluations, architects and deploys solutions in on-premises, air-gapped, and private cloud environments, and partners with system integrators and distributors. Native Japanese and strong English proficiency are required; travel up to ~50% is expected.

The GRC Manager will own Mattermost's compliance posture end-to-end (federal readiness and commercial certifications), lead certification and surveillance cycles (CMMC, NIST, ISO 27001, SOC 2), operate risk and third-party vendor risk programs, apply GRC engineering and AI for continuous controls monitoring and automation, coordinate external audits, maintain compliance artifacts, manage customer security assurance, and grow the GRC team. Role requires U.S. citizenship and location in the United States.

Mattermost is hiring a Senior Account Executive to own and grow enterprise accounts across the Americas with emphasis on net-new pipeline, outbound prospecting, and executive-level engagement. The role requires running full sales cycles for complex multi-stakeholder deals, proficiency with Salesforce and MEDDPICC, and representation at industry events. Candidate must be based on the U.S. East Coast (Eastern Time Zone).

Lead architecture and development of the React Native mobile app focused on unreliable connectivity, WebSocket reliability, offline-first storage/sync and conflict resolution, performance and memory optimizations, mobile security and compliance, and testing/tooling improvements. Requires demonstrated React Native and JavaScript/TypeScript experience, networking fundamentals, offline-first design, and familiarity with native iOS and/or Android development. Role may require U.S. government security clearance and federal eligibility for export-controlled information.

Mattermost is hiring a Senior Security Engineer to lead security and IT projects, detect/investigate/remediate incidents using SIEM, EDR, and SOAR, conduct threat hunting with a Zero Trust approach, administer IAM and security monitoring, and assess AI-enabled risk. Requires 3+ years hands-on security engineering/incident response experience, familiarity with SIEM/EDR/SOAR, cloud security (AWS/GCP/Azure), Linux and Kubernetes/Docker, IAM, and managing Microsoft 365/Google Workspace tenants. Posted salary range: €62,000–€82,000 EUR.

Lead design and implementation of security tooling, harden cloud and IT infrastructure, detect/investigate/remediate incidents using SIEM/EDR/SOAR, conduct threat hunting with a Zero Trust approach, administer IAM and security monitoring, collaborate with Engineering on AI-related risks, and contribute to policies and incident response. Requires 3+ years relevant experience.

Mattermost is hiring a Senior Security Engineer to design and implement security tooling, harden cloud and IT infrastructure, detect/investigate/remediate incidents, administer IAM and security monitoring, and assess AI-enabled risks. Requires 3+ years in security engineering/incident response, experience with SIEM/EDR/SOAR, cloud security (AWS/GCP/Azure), Linux and Kubernetes/Docker, IAM, and Microsoft 365/Google Workspace management. Role is fully remote and based in the United Kingdom.

Quota-carrying individual contributor role owning Mattermost's Navy territory: develop multi-year account strategies, drive renewals and expansion, close complex multi-year enterprise SaaS transactions ($500K–$5M+), navigate federal procurement and contract vehicles, and manage co-sell relationships with Federal Systems Integrators and distributors.

Lead the technical vision and architecture for test infrastructure and quality engineering across server, web, mobile, and desktop. Partner with executive and engineering leadership to implement CI/CD-integrated quality gates, observability, and AI/LLM-driven test generation and flakiness management. Requires 8+ years experience and strong skills with TypeScript, React, Go, PostgreSQL, CI/CD, containerization (Docker/Kubernetes), and end-to-end testing frameworks.

Mattermost seeks a Lead Site Reliability Engineer to provide technical leadership for SRE architecture, observability, automation, and cloud/hybrid infrastructure. The role requires designing and operating production-grade containerized workloads (Kubernetes), infrastructure-as-code (Terraform), monitoring and incident management, mentoring SRE engineers, and working with security/compliance teams (including FedRAMP/DoD/NIST). Minimum 5 years of relevant experience; salary range $145,000–$200,000.

The CAM independently owns inbound-led net-new opportunities, leads expansions and renewal management within assigned accounts, and partners with Account Executives on larger or more complex deals. Requires 2+ years of sales, account or renewal experience and familiarity with CRM systems (Salesforce preferred).

Mattermost seeks a Federal Account Manager to own renewals and expansions in federal accounts, identify upsell/cross-sell opportunities, manage inbound expansion requests, collaborate with Federal AEs and partners, and maintain CRM and forecasting. Role requires 3–5+ years of sales/account management experience, CRM experience (Salesforce preferred), and applicants must be U.S. citizens eligible for a U.S. security clearance.