Mattermost

We’re helping the world build better software by aligning teams, tools, and processes at each stage of the development lifecycle. Our customers use Mattermost to increase their productivity, build and execute scalable workflows, and collaborate outside of code — all while contributing to a shared, flexible, and extensible platform built just for them.

We’re committed to open source and our community of over 4,000 contributors worldwide. At Mattermost, you get to build open source software benefiting thousands of companies, institutions, schools, and nonprofits around the globe.

15 Jan, 2026
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com The Commercial Account Manager (CAM) – US Federal is a collaborative, territory-aligned sales role that operates alongside Federal Account Executives (AEs). CAMs independently manage defined commercial sales motions while exercising sound judgment on when to partner with AEs on larger or more complex...
11 Jan, 2026
Mattermost Tokyo, Japan
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com About the Role We are seeking a highly skilled and motivated Technical-Sales Engineer to join Mattermost as we enter the Japanese market. This is a high-impact, early-stage opportunity requiring a "player-coach" mentality with significant room for ownership, autonomy, and professional growth. As...
09 Jan, 2026
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com About the Role Mattermost is seeking a Senior Account Manager to own and grow a portfolio of commercial accounts across the Americas . This role is ideal for a proactive, strategic account leader who thrives on uncovering expansion opportunities, driving value-based conversations, and engaging...
17 Dec, 2025
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost is seeking a Director of Field & Channel Marketing, North America, to lead regional marketing strategy, partner engagement, and demand generation across two priority regions, spanning both Public Sector (Federal, Defense, SLED) and Enterprise markets . As the senior marketing partner...
17 Dec, 2025
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost is seeking an experienced and visionary Lead Site Reliability Engineer (SRE) to guide the architecture, reliability, and operational excellence of the infrastructure powering our secure, mission-critical collaboration platform.   In this role, you will provide technical leadership...
17 Dec, 2025
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost is seeking a result-driven and analytical Product Security Engineer to help ensure the security of our product and services across the company. As part of our Security team you will work closely with a globally distributed team to support in all the different aspects of the software...
17 Dec, 2025
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost is seeking a result-driven and analytical Senior Product Security Engineer to help ensure the security of our product and services across the company. As part of our Security team you will work closely with a globally distributed team to support in all the different aspects of the software...
17 Dec, 2025
Mattermost United Kingdom
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost is seeking a visionary Senior Software Engineer, Testing Infrastructure , to lead a company-wide transformation of test automation and quality engineering. In this highly visible role, you will serve as the technical lead for testing and quality, partnering directly with Mattermost’s...
17 Dec, 2025
Mattermost Ontario, Canada; Ottawa, Ontario, Canada; Toronto, Ontario, Canada
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost  is seeking a visionary  Senior Software Engineer, Testing Infrastructure , to lead a company-wide transformation of test automation and quality engineering. In this highly visible role, you will serve as the technical lead for testing and quality, partnering directly with Mattermost’s...
17 Dec, 2025
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost is seeking a visionary Senior Software Engineer, Testing Infrastructure  to lead a company-wide transformation of test automation and quality engineering . In this highly visible role, you will serve as the technical lead for software testing and quality , partnering directly with...
17 Dec, 2025
Mattermost Ontario, Canada; Ottawa, Ontario, Canada; Toronto, Ontario, Canada
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Job Title: Technical Account Manager (TAM) – Canada (Security Cleared) Department: Customer Success / Technical Account Management Location: Remote – Canada Travel Requirement: Up to 30% (typically ~10%). We’re seeking a Technical Account Manager (TAM) who will serve as a trusted technical...
17 Dec, 2025
Mattermost USA
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com We are seeking an experienced and results-driven Technical Support Manager to lead our global technical support organization within the cybersecurity and workflow communication industry . This U.S.-based role manages a distributed international team responsible for delivering exceptional technical...
17 Dec, 2025
Mattermost Spain
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com Mattermost is seeking a visionary Senior Software Engineer, Testing Infrastructure to lead a company-wide transformation of test automation and quality engineering. In this highly visible role, you will act as the technical lead for testing and quality, working directly with Mattermost’s founders,...
17 Dec, 2025
Mattermost Ottawa, Ontario, Canada; Toronto, Ontario, Canada
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.   We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.   To learn more, visit  www.mattermost.com We’re looking for a Digital Experience & AI-Forward SEO Specialist to manage and optimize our owned channels. You’ll be responsible for keeping our website fast, accurate, user-friendly, and conversion-optimized — while also applying modern AI and automation to scale SEO, UX, CRO, and digital...