Key Skills

Job Description

Help us improve your Mozilla experience In addition to Cookies necessary for this site to function, we’d like your permission to set some additional Cookies to better understand your browsing needs and improve your experience. Rest assured — we value your privacy. Cookie settings Products Firefox browsers Mozilla VPN Mozilla Monitor Firefox Relay MDN Plus Thunderbird 0DIN Tabstack Otari All products About us Our Mission About Mozilla The Mozilla Manifesto Get Involved Blog Our Work Mozilla Foundation Mozilla.ai Mozilla Ventures Mozilla Advertising Mozilla Builders Mozilla New Products Mozilla Careers Menu Overview Diversity and Inclusion Benefits Teams Locations Job Listings Senior Security Engineer - SecOps at Mozilla Corporation Team: Infrastructure Locations: Remote Netherlands, Remote Spain, Remote Belgium, Remote Finland, Remote UK, Remote Sweden, Remote Germany Remote Netherlands Remote Spain Remote Belgium Remote Finland Remote UK Remote Sweden Remote Germany Why Mozilla? Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people. 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 Mozilla is looking for an Incident Responder to monitor and mitigate attacks across Mozilla’s products and services. In this position, you will be a part of a flexible team responsible for handling security incidents. As such, you’ll need to have years of practical security experience and knowledge of the state of the art for detecting and responding to attacks. You’ll be someone Mozillians across the company depend on and trust to respond quickly and effectively in a crunch, with the outstanding communication and collaboration skills needed to work in partnership with diverse stakeholders. Most importantly, you will become a critical member of the team responsible for ensuring the integrity of Mozilla’s products and for keeping Mozilla’s users safe, within a company dedicated to building a more secure internet. What You'll Do Identify and respond to security incidents on a global scale. Act as an incident commander to drive incidents through the entire response lifecycle. Design and maintain a portfolio of security alerts, automated actions, playbooks and escalation workflows in support of a high-performing 24/7 incident response capability. Conduct threat hunting activities, anticipate future threats, and maintain forward-thinking strategies for tools/technology/processes that combat sophisticated threat actors. Research threat intelligence reports, triage and manage resulting workflows. Partner with key stakeholders and communicate effectively to maintain a continuously improving feedback loop of preparation, identification, analysis, containment, and post mortem activities. Participate in on-call rotation. What you'll bring: 5+ years of demonstrated ability managing security incidents at a global scale and/or experience working in Security Operations Centers (SOC), Product Security Incident Response Teams (PSIRT), and Computer Security Incident Response Teams (CSIRT). Expertise with security information and event management (SIEM) systems (eg. ELK, Google BigQuery, Splunk, etc.). Splunk proficiency is preferred. Expertise with endpoint detection and investigation. Hands-on experience with leading EDR tools and demonstrated ability to leverage endpoint telemetry to find root cause. Expertise with security orchestration and automation (SOAR) platforms such as Tines or Splunk SOAR. Superb communication and leadership capacity; ability to partner effectively with diverse company stakeholders. Real-world experience in software development and/or engineering operations for consumer products and services; B.S. in a technology-focused field is helpful. Practical experience working with cloud technologies (eg. Google Cloud Platform, Amazon Web Services, Heroku, Microsoft Azure, etc.). Competencies: Ownership and Accountability Autonomy High Level of Integrity Clear Communication Creative Problem Solver Passionate about Security 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 Annual professional development budget 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 orientations, 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 [email protected] 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 Req ID: R3224 Hiring Ranges Remote Belgium €56.000—€74.000 EUR Remote Netherlands Remote Spain Remote Belgium Remote Finland Remote UK Remote Sweden Remote Germany Applicant Privacy Notice Why Mozilla? At Mozilla, we’re serving humanity—by maintaining a safe, open internet—while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla. Our values drive our actions Purpose is built into our work, with our mission driving every decision We challenge assumptions, the status quo, ourselves, and each other We are transparent: in our code, our business partnerships, and our everyday interactions We seek out people from diverse backgrounds and with perspectives different from our own We pair purpose with performance and put people ahead of profit Our impact is global 1000+ paid staff from over 30 countries Thousands of volunteer contributors across six continents 2 global offices: Berlin and Toronto 9 coworking space locations: San Francisco, San Mateo, London, Paris, Portland, Tulsa, Vancouver, Chicago, and Bellevue Hundreds of home offices globally Our benefits are world-class Flexible work environment (majority of Mozillians work remotely) Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents) Reimbursement for professional development (up to $3,000/year) A work setup including the latest hardware and software of your choice Company Leadership Press Center Careers Merch Store Contact Support Product Help File a Bug Localize Mozilla Security Developers Developer Edition Enterprise Tools MDN Firefox Release Notes Follow @Mozilla Bluesky (@mozilla.org) Instagram (@mozilla) LinkedIn (@mozilla) TikTok (@mozilla) Spotify (@mozilla) Follow @Firefox Bluesky (@firefox.com) Instagram (@firefox) YouTube (@firefoxchannel) TikTok (@firefox) Donate All languages Language English (Canadian) English (British) English Donate to the not-for-profit Mozilla Foundation. 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Core Responsibilities

Identify, investigate, and respond to security incidents globally, serving as incident commander and guiding response through containment and post-incident review. Maintain security alerts, automated actions, playbooks, and escalation workflows; conduct threat hunting and intelligence triage while collaborating with stakeholders and participating in on-call rotation.

Requirements

Requires at least five years of experience managing large-scale security incidents or working in a SOC, PSIRT, or CSIRT, along with expertise in SIEM, endpoint detection and investigation, and SOAR platforms. Candidates should bring strong communication and leadership skills, practical cloud experience, and real-world software development or engineering operations experience; a technology-focused bachelor's degree is helpful.

Benefits

• Performance-Based Bonus
• Medical Coverage
• Dental Coverage
• Vision Coverage
• Retirement Contributions
• Wellness Days
• Paid Holidays
• Birthday Leave
• Home Office Stipend
• Professional Development Budget
• Well-Being Stipend
• Paid Parental Leave
• Employee Referral Bonus
• Life and Accidental Death and Dismemberment Insurance
• Disability Insurance
• Employee Assistance Program