Senior Security Engineer Security Incident Response Team (SIRT)

As a Senior Security Engineer on GitLab’s Security Incident Response Team (SIRT) you will play a critical role in defending GitLab.com and the broader GitLab environment against evolving security threats. This role also supports our FedRAMP environment and requires U.S. citizenship and residency within the United States. You will lead high-impact incidents and investigations drive continuous improvements in defense detection and response capabilities and help scale security operations through automation and intelligent workflows.

Operating within a 24/7 global environment (follow the sun model) you will own incidents end-to-end - from detection and triage through containment eradication and recovery - while partnering cross-functionally to strengthen GitLab’s overall security posture.

A key aspect of this role is leveraging automation and AI-driven approaches to improve detection fidelity accelerate investigations and reduce response times. You will help shape how modern tooling and data are applied to stay ahead of evolving adversary tactics. This role is ideal for someone who thrives in high-tempo environments brings strong DFIR expertise and is equally passionate about operational excellence and building scalable detection and response systems and workflows.

• 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

• 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

Due to government requirements you must be a United States Citizen (defined as any individual who is a citizen of the United States by law birth or naturalization) to fill this position.

The Security Incident Response Team (SIRT) is a globally distributed team of engineers split across 3 core regions; AMER APAC and EMEA and is at the forefront of security events that impact both GitLab.com and GitLab cloud and corporate environments. We are both reactive and proactive leading security investigations incident response support and response resolution through to cyber threat analysis and detection and response engineering. Even though we’re a global team we work together in a cross-regional manner and have automation and processes to facilitate collaboration when resolving incidents handovers and general collaboration for project work as well.

What We Do

GitLab is the Intelligent Orchestration Platform where software teams and their AI agents stay in flow to amplify their capacity for innovation. Together they automate repetitive tasks to plan build secure test deploy and maintain software. With GitLab software teams spend less time on coordination overhead and more time on the next big idea.What started in 2011 as an open source project to help one team of programmers collaborate is now the intelligent orchestration platform millions of people use to deliver software faster more efficiently while strengthening security and compliance.Since the beginning we've been firm believers in remote work open source DevSecOps and iteration. We get up and log on in the morning to work alongside the GitLab community to deliver new innovations every month that help teams and their AI agents ship great code faster.

Why Work With Us

GitLab is where careers accelerate innovation flourishes and every voice is valued. Co-create the future with us as we build technology that transforms how the world develops software.

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