All roles

Product Security Engineer

Remote · USA Full-time New today

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 results-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 all 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, coordinating with relevant stakeholders, gathering requirements, and leading the implementation.

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 modelling 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

Requirements

  • BS in Computer Science, Cybersecurity, Software Engineering, or a related technical field, or equivalent experience, with 3+ years of relevant experience in application security, secure software development, or penetration testing
  • Understanding of web application security and secure development practices
  • Familiarity with common security libraries, security controls, and common security flaws
  • Experience with static/dynamic analysis, and common exploit methods
  • Experience in one or more programming languages, ideally Go or JavaScript
  • Excellent written and verbal communication skills
  • Demonstrable teamwork skills and resourcefulness

Preferences

  • Experience working in open source communities
  • Experience running a bug bounty programme
  • Experience with Threat Modelling applications
  • Certifications in the domain of penetration testing or application security (e.g., OSCP, OSWE, GWAPT, etc.)
  • Experience with Electron, React, or React Native
  • Participation in Bug Bounties, CTFs, or similar activities

Mattermost takes a market-based approach to pay and pay may vary depending on your location. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.

Mattermost is an EEO Employer, we are a remote-first, open-source company.

We are continually working to expand our hiring in more countries and regions, ensuring compliance with local laws and regulations, which takes time.

Mattermost values your unique perspective—we welcome all applicants. We encourage individuals from all backgrounds to apply and are committed to assessing candidates based on their skills and qualifications. We do not tolerate discrimination against staff or applicants based on race, religion, national origin, age, disability, pregnancy status, veteran status, or other personal characteristics.

If you require accommodations during the interview process, please let us know—we’re happy to assist.

Apply to this Job

Related roles

General Manager, UK Entity

Remote · USA Full-time

Product Security Engineer

Remote · USA Full-time

Senior Product Counsel

Remote · USA Full-time

Sr AI Engineer (Fullstack - TS/Vue/NodeJS)

Remote · USA Full-time

Product Quality Analyst

Remote · USA Full-time

Senior Billing Analyst

Remote · USA Full-time

North America - Senior Sales Executive - Banking & Capital Markets

Remote · USA Full-time

Care Manager (UM/UR) - Remote, Idaho Licensed

Remote · USA Full-time

Future MIP Development Scholar (Global Remote)

Remote · USA Full-time

Director, Account Executive

Remote · USA Full-time

Staff Accountant - Audit Public/Private - New Grad 2026/2027 - Vancouver

Remote · USA Full-time

Experienced Live Chat Customer Service Representative – Work From Home Opportunity at arenaflex

Remote · USA Full-time

CORPORATE TALENT ACQUISITION BUSINESS PARTNER II

Remote · USA Full-time

Experienced Data Entry Specialist – Remote Part-Time Opportunity for Detail-Oriented Individuals with Strong Analytical Skills

Remote · USA Full-time

Experienced Data Entry Specialist – Entry-Level Opportunity in Remote Work Environment at arenaflex

Remote · USA Full-time

Measurement Lead, Campaign Measurement

Remote · USA Full-time

Senior​/Regulatory Affairs Consultant; Molecules and Biologics

Remote · USA Full-time

Senior Director of Business Transformation & Operating Model Strategy (New York)

Remote · USA Full-time

Staff Global Supply Manager, Capital Procurement

Remote · USA Full-time

Enterprise Account Executive

Remote · USA Full-time