Product Security Engineer (Remote)

Mattermost (View all Jobs)

Washington, D.C.

Please mention No Whiteboard if you apply!
I'm a one-man team looking to improve tech interviews, and could use any support! 😄

Interview Process

1. Follow-up questions over email 2. A couple of video calls 3. Audition (paid real-world “try out” project) 4. Video call to discuss audition 5. Video call with the CTO

Programming Languages Mentioned


Mattermost provides secure, workflow-centric collaboration for technical and operational teams that need to meet nation-state-level security and trust requirements. We serve technology, public sector, national defense, and financial services industries with customers ranging from tech giants to the world’s largest banks, to the U.S. Department of Defense and governmental agencies around the world. 

Our self-hosted and cloud offerings provide integrated workflow automation, AI-acceleration, ChatOps with team messaging, audio calling and screen share on an open core platform vetted and deployed by the world’s most secure and mission critical organizations. 

We co-build the future of collaboration with over 4,000 open source project contributors who’ve provided over 30,000 code improvements towards our shared product vision, which is translated into 20 languages.
To learn more, visit
Responsibilities include:
  • Support the application vulnerability management and mitigation approaches
  • Conduct application security reviews through manual code review or static/dynamic code analysis
  • Engage in threat modeling and design reviews of in-house developed software components
  • Provide security guidance and training to internal development teams
  • Triage SCA findings and support internal development teams in SCA findings remediation
  • Improve and/or automate existing processes to increase efficiency
  • Required Background/Skill:
  • Deep understanding of web application security and secure development practices 
  • Deep understanding with common security libraries, security controls, and common security flaws 
  • Experience with Threat Modeling applications
  • Experience with static/dynamic analysis, and common exploit tools and methods
  • Experience in one or more programming languages, ideally Go or JavaScript
  • Excellent written and verbal communication skills
  • Demonstrable teamwork skills and resourcefulness
  • Preferred Background/Skill:
  • Experience working in open-source communities
  • Experience running a bug bounty program
  • Certifications in the domain of penetration testing or application security (e.g. OSCP, OSWE, GWAPT, …)
  • Experience with Electron, React or React Native
  • Participation in Bug Bounties, CTFs or similar activities
  • Mattermost is an EEO Employer. We are a remote-first, open source company.

    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!

    Please mention No Whiteboard if you apply!
    I'm a one-man team looking to improve tech interviews, and could use any support! 😄

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