M

Mattermost

Secure collaboration platform with customizable workflows

GRC Manager

Full-TimeUpdated on 10/17/2026
$139.3k - $168.3k
Expert
Bachelor's
Remote in USA
Remote
CybersecuritySecurity Governance, Risk & Compliance
No H1B Sponsorship
US Citizenship Required

About the job

Requirements
  • A bachelor's degree in computer science, information security, or a related field, or significant professional GRC and compliance experience.
  • Senior-level experience in governance, risk, and compliance, security compliance, or IT audit, including direct ownership of a certification or authorization program.
  • Experience with U.S. federal standards, including CMMC and NIST 800-171/800-53.
  • Experience with ISO 27001 and SOC 2 Type II.
  • Experience operating a formal risk management program.
  • Experience running a third-party and vendor risk management program.
  • Experience owning customer-facing security assurance, including security questionnaires and trust center content.
  • Working knowledge of security controls for cloud environments such as AWS, GCP, and/or Azure.
  • Excellent written and verbal communication skills.
  • U.S. citizenship is required; candidates must be located in the United States and eligible to obtain and maintain a U.S. government security clearance.
  • Applicants must meet eligibility requirements for access to export-controlled information under U.S. export control laws, including EAR and ITAR.
Responsibilities
  • Own and modernize compliance programs across federal and commercial markets.
  • Lead readiness, certification, and surveillance cycles across both programs.
  • Operate the risk management program end to end, from identification and assessment through treatment and acceptance.
  • Own the third-party and vendor risk management program, including security assessments and supply chain risk.
  • Apply GRC engineering and automation to replace manual evidence collection with continuous controls monitoring.
  • Build AI-native workflows to accelerate and improve the quality of recurring compliance work.
  • Maintain the control library, system security plans, POA&Ms, and policies.
  • Coordinate external audits from scoping through remediation.
  • Own customer security questionnaires, trust center content, and reusable compliance artifacts to accelerate deal cycles.
  • Grow and lead the GRC team as the program scales.
Desired Qualifications
  • Professional GRC certifications such as CISA, CRISC, CISM, CISSP, or CIPP.
  • Experience working with AI platforms such as Claude, OpenAI, or Gemini.
  • Experience with compliance automation tooling such as Vanta or Drata, and continuous controls monitoring.
  • Direct experience applying AI or LLM-based workflows to GRC tasks.
  • Proficiency in no-code automation or scripting languages.
  • Past success in critical infrastructure industries such as defense, cybersecurity, communications, or manufacturing.

About the company

Mattermost provides a secure, customizable collaboration platform designed for technical teams. It offers real-time messaging, file and code snippet sharing with inline syntax highlighting, and workflow automation, all within a platform that can be fully customized and deployed anywhere to meet strict security and data-control needs. The product integrates with essential developer and IT tools like GitHub, GitLab, and ServiceNow, enabling users to run and automate workflows from a single interface. In addition to an open-source version, Mattermost offers premium features such as built-in identity and access controls, granular admin controls, advanced compliance auditing and reporting, and flexible deployment options. Its goal is to help technical teams collaborate more effectively while maintaining strong security and data governance.

Company Size

51-200

Company Stage

Grant

Total Funding

$71.4M

Headquarters

Palo Alto, California

Founded

2016

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Simplify's Take

What believers are saying

  • Mattermost said hundreds of engineers earned certification by July 22, 2026.
  • Mattermost appointed Adam Enterkin CRO on April 22, 2026, targeting sovereign-market growth.
  • Mattermost is sponsoring Locked Shields 2026 and NATO events, reinforcing defense visibility.

What critics are saying

  • v12.0 drops RHEL 7, RHEL 8, and OpenSearch 1.x in October 2026.
  • Atlassian's Confluence Data Center retirement creates a migration race Mattermost Docs must win by 2029.
  • Microsoft Teams Government, Slack Enterprise Grid, and Atlassian's roadmap commoditize secure collaboration by 2029.

What makes Mattermost unique

  • Mattermost Docs targets Confluence migrations for defense and critical infrastructure, launched March 24, 2026.
  • Virtru ZTDF integration gives Mattermost persistent file encryption inside workflows, announced July 28, 2026.
  • Professional Certification builds operator ecosystem around Mattermost, expanding enterprise deployments since January 2026.

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Benefits

  • Fully remote work
  • Office setup fund
  • Coworking space stipend
  • Internet and mobile phone reimbursement
  • 401k
  • Unlimited vacation
  • Family & friends days
  • Async weeks
  • Health benefits
  • Global and regional team meetups
  • Open source Fridays
  • Community hackathons and events

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

0%

2 year growth

-1%
SBIR.gov
Sep 13th, 2026
Awards | SBIR

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Associated Press
Jul 28th, 2026
Mattermost and Virtru partner to deliver zero trust data protection for national security operations

Mattermost, an open-source collaboration platform for defence and mission-critical teams, has partnered with Virtru, a data-centric security firm, to deliver Zero Trust Data Format technology for national security operations. The integration enables organisations to apply cryptographic file protection within Mattermost workflows, supporting the Department of War's Zero Trust Strategy and CMMC requirements. When users upload files in Mattermost, they can classify them and apply handling restrictions. Virtru then wraps the file in a ZTDF-protected container, enabling encryption and policy-based access controls that persist as data moves across environments. The architecture aligns with DoD Zero Trust principles and standards recognised by the intelligence community. The integration is available now and will be demonstrated at Black Hat USA and DoDIIS Worldwide Conference in August 2026.

PR Newswire
Jul 21st, 2026
Mattermost launches professional certification for engineers operating mission-critical systems

Mattermost has launched its Professional Certification programme across Asia Pacific and Japan. The credential is designed for engineers who deploy and operate Mattermost in mission-critical environments, including defence, critical infrastructure, financial services, and enterprise operations. The certification validates technical expertise in managing secure communications infrastructure. Engineers can demonstrate their proficiency in deploying Mattermost's platform across sensitive operational settings where reliability and security are paramount. The programme expands Mattermost's support for organisations requiring robust communications systems. By offering professional credentials, the company aims to strengthen the technical capabilities of teams managing its platform in high-stakes environments across the region.