Overview
As an Incident Responder at Mozilla, you will monitor, detect and mitigate security incidents across Mozilla's products globally. You'll act as incident commander, driving responses through a full lifecycle and shaping playbooks for 24/7 readiness. You'll conduct threat hunting, research threat intel, and collaborate with diverse stakeholders to improve preparedness and containment. This role supports Mozilla's mission to keep users safe and build a more secure internet through proactive defense and cross-functional partnership.
Compensaciones / Beneficios generous performance-based bonus plans
medical, dental, and vision coverage
retirement contributions with 100% immediate vesting
quarterly all-company wellness days
home office stipend
professional development budget
Responsabilidades Identify and respond to security incidents on a general scale
Act as incident commander to drive incidents through the full response lifecycle
Design and maintain alerts, automations, playbooks, and escalation workflows for 24/7 incident response




Conduct threat hunting and develop forward-looking defense strategies
Research threat intelligence and manage resulting workflows
Collaborate with stakeholders to continuously improve preparation, identification, analysis, containment, and post-mortem activities
Participate in on-call rotation
Requisitos principales 5+ years of security incident experience at a global scale or in SOC/PSIRT/CSIRT environments
Experience with SIEM systems (e.g., ELK, Google BigQuery, Splunk); Splunk proficiency preferred
Experience with endpoint detection and investigation using EDR tools
Experience with SOAR platforms (e.g., Tines or Splunk SOAR)
Strong communication and leadership abilities to partner with diverse stakeholders
Background in software development or engineering operations for consumer products; BS in a tech field is helpful
Hands-on cloud experience (e.g., GCP, AWS, Heroku, Azure)
Clear communication
Leadership
Collaborative mindset
Se

📌 Senior Security Engineer (Sevilla)
🏢 Mozilla
📍 Sevilla