Mozilla · 1 month ago
Senior Security Engineer - Incident Response
United States
Full-time
Remote
Senior Level
5+ years expMozilla Corporation is a non-profit-backed technology company that focuses on improving the internet for its users. They are seeking a Senior Security Engineer to monitor and respond to security incidents, ensuring the integrity of Mozilla’s products and the safety of its users.
Browser ExtensionsInternetOpen SourceSoftwareWeb Browsers
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 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
Qualification
Required
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.)
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.)
Preferred
Splunk proficiency is preferred
Benefits
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)
Company
Mozilla
Mozilla provides internet solutions and offers firefox, thunderbird, and raindrop.
501-1000 employees
H1B Sponsorship
Mozilla has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2024 (5)
2023 (4)
2022 (3)
2021 (2)
2020 (6)
Funding
Current Stage
Late StageTotal Funding
$2.3MKey Investors
AOL
2005-01-01Angel· $0.3M
2003-07-15Series Unknown· $2M
Leadership Team
John Shaughnessy
Manager, Engineering and Ecosystem Strategy
Recent News
2025-12-31
2025-12-24
2025-12-21
Company data provided by crunchbase