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.

01 Feb, 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 As a  Senior Account Executive for Japan, you will be the primary driver of Mattermost’s growth in one of our most strategic markets. We are seeking a high-caliber sales professional with over  10 years of experience in enterprise and channel sales. In this role, you will utilize your extensive network...
27 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 New Media & Content Specialist is responsible for creating, managing, and deploying high-impact content across social, web, and multimedia channels, with a strong emphasis on real-time and rapid response social media execution. This role blends storytelling, editorial planning, and production to...
27 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 Mattermost is the leading secure collaboration platform for mission-critical technical teams. We have built a world-class product that solves the most complex collaboration challenges for mission-critical organizations, and are now looking for a Senior Outbound Product Manager who will unlock our next...
27 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 Mattermost is looking for a Senior Product Manager to lead the evolution of our cyber-intelligent workflows. This is a "rocket ship" role designed for a product leader who wants to build the next generation of mission-critical infrastructure. You will be responsible for defining how the world’s most...
23 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 We’re seeking a Technical Account Manager (TAM) who will serve as a trusted technical advisor to our enterprise and public sector customers. In this role, you’ll ensure the successful deployment, integration, and secure operation of the Mattermost platform in mission-critical environments. You’ll...
17 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 We are looking for a  foundational HR leader to build the backbone of our global People operations. As we scale toward an AI-forward future, we need a systems thinker who can bridge complex global compliance with a high-performance culture. In this role, you will own high-impact, high-stakes areas...
16 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 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...
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...