Senior Security Engineer - SecOps
Remote Sweden · Remote · 5+ years experience · Remote · Posted Sep 29, 2026
At a glance
- Experience
- 5+ years experience
- Workplace
- Remote
- Location
- Remote Sweden · Remote
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 hiringaccommodation@mozilla.com 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
About the role
- Mozilla is seeking an Incident Responder to monitor and mitigate security attacks across its products and services.
- The role involves joining a flexible team responsible for handling security incidents and ensuring the integrity of Mozilla's products.
- The position requires a candidate who can act as an incident commander and collaborate effectively with diverse stakeholders.
Responsibilities
- 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.
- Support a high-performing 24/7 incident response capability.
- Conduct threat hunting activities and anticipate future threats.
- Maintain forward-thinking strategies for tools, technology, and processes to combat threat actors.
- Research threat intelligence reports, triage and manage resulting workflows.
- Partner with key stakeholders to maintain a feedback loop of preparation, identification, analysis, containment, and post mortem activities.
- Participate in on-call rotation.
Requirements
- 5+ years of demonstrated ability managing security incidents at a global scale or experience in SOC, PSIRT, or CSIRT environments.
- Expertise with security information and event management (SIEM) systems.
- Expertise with endpoint detection and investigation, including hands-on experience with EDR tools.
- Expertise with security orchestration and automation (SOAR) platforms.
- 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.
- Practical experience working with cloud technologies.
Preferred qualifications
- Splunk proficiency
- B.S. in a technology-focused field
Benefits
- Performance-based bonus plans
- Medical, dental, and vision coverage
- Retirement contributions with 100% immediate vesting
- Quarterly all-company wellness days
- Country specific holidays plus birthday off
- One-time home office stipend
- Annual professional development budget
- Quarterly well-being stipend
- Paid parental leave
- Employee referral bonus program
Workplace
- Remote Sweden
- Remote Germany
Skills
- SIEM
- ELK
- Google BigQuery
- Splunk
- EDR
- SOAR
- Tines
- Google Cloud Platform
- Amazon Web Services
- Heroku
- Microsoft Azure
