Senior Security Engineer, Security Incident Response Team (SIRT)

GitLab is the intelligent orchestration platform for DevSecOps, enabling organizations to enhance developer productivity and reduce security risks. The Senior Security Engineer will lead incident response for high-severity security events, drive improvements in security operations, and leverage automation and AI to enhance detection and response capabilities.

Responsibilities:

• Lead and coordinate end-to-end incident response for high-severity security events within a 24/7 global on-call model, with this role operating during U.S. business hours
• Prepare clear executive communications that keep stakeholders informed during incidents
• Investigate complex security incidents across cloud environments, applying strong Digital Forensics and Incident Response (DFIR) methodologies
• Partnering with Signals Engineering to design and implement detection capabilities, including SIEM use cases, alerting strategies, and telemetry pipelines
• Build and enhance automation and AI-assisted workflows to improve triage, investigation speed, and response consistency
• Partner with Threat Intelligence to contextualize threats and improve detection coverage
• Conduct root cause analysis (RCA) and lead post-incident reviews to drive continuous improvement and risk reduction
• Develop and maintain runbooks, playbooks, and operational documentation
• Collaborate cross-functionally (Engineering, Infrastructure, Legal, Product, Communications, etc) during incidents and lead proactive initiatives (e.g. tabletops)
• Mentor other engineers and help elevate the team’s overall incident response maturity

Requirements:

• U.S. citizenship and residency within the United States
• Strong experience in security incident response and investigations in cloud-first environments
• Experience using or administering Git/GitLab in a security or engineering context
• Hands-on experience with SIEM, EDR, and/or detection engineering
• Experience with cloud platforms (AWS & GCP)
• Familiarity with threat intelligence and adversary tactics (e.g., MITRE ATT&CK)
• Experience building or working with automation (e.g., Python, scripting, SOAR platforms)
• Interest or experience in applying AI/ML or data-driven techniques to detection, triage, or response workflows
• Strong analytical and problem-solving skills; ability to operate effectively during high-severity incidents
• Excellent written communication skills with a passion for clear, actionable documentation
• Growth mindset with a proactive approach to identifying and mitigating security risks