Senior Security Engineer, Bug Bounty

Mozilla Corporation; California (MO); Hybrid; USD 68,000 - 100,000; Full time

Benefits offered by this job

Generous bonus plans

Medical, dental, vision coverage

Retirement contributions with vesting

Home office stipend

Well-being stipend

Parental leave

Employee referral program

Life/AD&D, disability, EAP

Job summary

Mozilla Corporation is seeking a Security Engineer to own the Web Bug Bounty program and collaborate with Mozilla product and SIRT teams to mitigate security incidents and advance secure development practices across Mozilla’s products.

You will oversee triage, partner with researchers on HackerOne and other channels, drive remediation, and develop tooling to improve triage efficiency and program insights.

Qualifications

• 3+ years in a security engineering role.
• Experience operating bug bounty programs, including enhancements, automation and scaling.
• Practical experience working with modern cloud technologies (eg. AWS, GCP, Heroku, Azure, etc.).
• Experience analyzing code and systems to move from vulnerability → root cause → prevention.
• Real-world experience in software development and/or engineering operations.
• Strong communication, collaboration, and problem-solving skills, with the ability to influence and guide cross-functional teams.
• Formal credentials are great, but real-world experience, curiosity, passion and a growth mindset matter more.

Responsibilities

• Own and scale Mozilla’s web bug bounty program, including strategy, prioritization, KPIs, and continuous improvement
• Act as the primary interface with external researchers and platforms (e.g., HackerOne), fostering a high-quality and trusted research community
• Lead triage and technical validation of incoming reports across multiple intake channels (HackerOne, Bugzilla, email)
• Drive end-to-end vulnerability remediation, partnering with engineering teams to ensure timely, effective fixes
• Identify root causes and systemic issues, and influence long-term improvements in secure development practices
• Collaborate with the Security Incident Response Team (SIRT) on active incidents and post-incident reviews
• Develop or leverage tooling to improve triage efficiency, signal quality, and program insights

Skills

Security engineering

Bug bounty programs

Cloud technologies

Code analysis

Software development

Communication

Problem solving

Job description

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.

About this team and role:

At Mozilla, we believe the internet is a global public resource—open and accessible to all. As a Security Engineer, you’ll protect that vision by building, breaking, and hardening products that put people’s privacy and safety first. We are looking for a security engineer to own, manage and administer the Mozilla Web Bug Bounty program and work with Mozilla product and SIRT teams to ensure risk mitigation of security incidents and events.

What you’ll do:

• Own and scale Mozilla’s web bug bounty program, including strategy, prioritization, KPIs, and continuous improvement
• Act as the primary interface with external researchers and platforms (e.g., HackerOne), fostering a high-quality and trusted research community
• Lead triage and technical validation of incoming reports across multiple intake channels (HackerOne, Bugzilla, email)
• Drive end-to-end vulnerability remediation, partnering with engineering teams to ensure timely, effective fixes
• Identify root causes and systemic issues, and influence long-term improvements in secure development practices
• Collaborate with the Security Incident Response Team (SIRT) on active incidents and post-incident reviews
• Develop or leverage tooling to improve triage efficiency, signal quality, and program insights

What you’ll bring:

• 3+ years of demonstrated ability in a security engineering role.
• Experience operating bug bounty programs, including enhancements, automation and scaling, and/or bug hunting
• Practical experience working with modern cloud technologies (eg. Amazon Web Services, Google Cloud Platform, Heroku, Microsoft Azure, etc.)
• Experience analyzing code and systems to move from vulnerability → root cause → prevention
• Real-world experience in software development and/or engineering operations
• Strong communication, collaboration, and problem-solving skills, with the ability to influence and guide cross-functional teams.
• Formal credentials are great, but real-world experience, curiosity, passion and a growth mindset matter more.

What you’ll get:

• Generous performance-based bonus plans to all eligible employees - we share in our success as one team
• Rich medical, dental, and vision coverage
• Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
• Quarterly all-company wellness days where everyone takes a pause together
• Country specific holidays plus a day off for your birthday
• One-time home office stipend
• Quarterly well-being stipend
• Considerable paid parental leave
• Employee referral bonus program
• Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

Commitment to diversity, equity, inclusion, and belonging

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientation s, gender identities, and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at [e-mail] to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

Group: D

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Hiring Ranges:

$104,000 - $139,000 CAD

$95,000 - $126,000 CAD