Suggested rewrite: Led a cross-functional initiative that improved [business outcome] by [measurable result], demonstrating experience relevant to this role...
Senior Security Engineer – SecOps
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- Remote from
- Sweden
- Salary
- SEK 512,925–683,900 / yr
- Department
- Cybersecurity
- Employment
- Full Time
- Experience
- Senior
- Published
- Apply before
- 26 Nov 2026
- Listing views
- 28
- Application actions
- 3
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The role, at a glance.
Mozilla is hiring a senior Security Operations engineer focused on global incident detection, response, and threat hunting across its products and services. The role leads incidents through the full response lifecycle, including containment, escalation, post-incident analysis, and continuous improvement of detection capabilities. It requires strong practical experience with SIEM, EDR, SOAR, cloud environments, and security automation, along with participation in an on-call rotation. The successful candidate will act as a trusted incident commander and communicate clearly with diverse technical and business stakeholders.
Role DNA
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Pace & Pressure
5/5Autonomy Level
5/5Communication Load
5/5Salary analysis
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Core skills
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Sample interview questions
I would explain how I validated the alert, established incident severity and scope, coordinated containment, preserved evidence, communicated status to stakeholders, and led remediation and a blameless post-incident review. I would also quantify improvements made to detections or response time afterward.
I tune detections using incident outcomes and telemetry quality, define clear severity criteria, suppress known-benign patterns carefully, and automate enrichment and low-risk response actions. I track false-positive rates, mean time to detect, and analyst feedback to continuously improve the alert portfolio.
I would correlate identity events with endpoint process trees, authentication activity, network connections, persistence mechanisms, command-line activity, and lateral-movement indicators. I would then determine affected assets, contain them as appropriate, preserve relevant artifacts, and expand the hunt for related indicators.
I start with a specific threat scenario and define triggers, ownership, evidence requirements, decision points, containment options, escalation paths, communications, and recovery validation. I test the playbook through tabletop exercises or simulations and revise it based on operational lessons.
I provide concise, time-stamped updates covering known impact, current scope, actions underway, risks, and the next update time. I avoid speculation, tailor technical detail to the audience, document decisions, and ensure stakeholders understand both immediate containment and longer-term remediation.
About this role.
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 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
#LI-REMOTE
Req ID: R3224
Hiring Ranges:
Remote Sweden
512 925 kr—683 900 kr SEK
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