Senior Product Security Engineer (Remote)

  • Mattermost
  • 24 Jan, 2023
Full time

Job Description

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. Hundreds of thousands of developers around the globe trust Mattermost to increase their productivity by bringing together team communication, task and project management, and workflow orchestration into a unified platform for agile software development. 

Founded in 2016, Mattermost’s open source platform powers over 800,000 workspaces worldwide with the support of over 4,000 contributors from across the developer community. The company serves over 800 customers, including European Parliament, NASA, Nasdaq, Samsung, SAP, United States Air Force and Wealthfront, and is backed by world-class investors including Battery Ventures, Redpoint, S28 Capital, YC Continuity. To learn more, visit

We value high impact work, ownership, self-awareness and being focused on customer success. If these values match who you are, we hope you'll learn more about working at Mattermost and apply!

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 development life cycle. You will be responsible for the implementation of additional application security tooling and/or processes across the company and coordinate with relevant stakeholders, gather requirements, and lead the implementation.



  • Ownership of vulnerability management and mitigation approaches
  • Support threat modeling of in-house developed software components
  • Conduct application security reviews through manual code review or static/dynamic code analysis
  • Architecture and review of security components
  • Provide security training and outreach to internal development teams
  • Develop security guidance documentation
  • Support the development of our application security program
  • Maintain and grow our bug bounty program


Required Background/Skills:

  • Bachelor's degree in Computer Science or related fields, or significant professional application security experience
  • Familiarity with common security libraries, security controls, and common security flaws 
  • Experience with static/dynamic analysis, and common exploit tools and methods
  • Experience in one or more programming languages, ideally Go or Javascript
  • Comfortable with using Git
  • Excellent written and verbal communication skills
  • Demonstrable teamwork skills and resourcefulnessLinux experience



  • Experience working in open source communities
  • Experience with OWASP SAMM or other security assessment standards
  • Certifications in the domain of penetration testing, or application security (e.g. OSCP, OSWE, GWAPT, …)
  • Experience with Kubernetes / Docker
  • Experience working in open source communities
  • Participation in Bug Bounties, CTFs or similar activities
Mattermost is a remote-first company with staff living and working across the globe. We are currently hiring staff in these countries/regions:

Canada - Germany - Greece - India - Spain - United Kingdom - United States

We are constantly working towards adding more countries/regions to this list, but first we need to make sure we are compliant with local laws and regulations, which takes time. 

Mattermost is made up of people from a wide variety of backgrounds and lifestyles. We embrace diversity and invite applications from people from all walks of life. We don't discriminate against staff or applicants based on gender identity or expression, sexual orientation, race, religion, age, national origin, citizenship, disability, pregnancy status, veteran status, or any other differences. Also, if you have a disability, please let us know if there's any way we can make the interview process better for you; we're happy to accommodate!