Senior Security Engineer, Security Incident Response Team (SIRT)

**This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Security Engineer, Security Incident Response Team (SIRT) based in Ireland.** This is an exciting opportunity to join a globally distributed cybersecurity team responsible for protecting large-scale cloud environments and critical platforms against evolving threats. In this role, you will lead high-impact incident response activities, investigate sophisticated security events, and help shape modern detection and response capabilities through automation and AI-driven approaches. You will work closely with cross-functional teams across engineering, infrastructure, and threat intelligence to continuously strengthen security posture and operational resilience. The position offers a fast-paced and collaborative environment where technical expertise, strategic thinking, and innovation play a key role in driving security excellence at scale. ### Accountabilities: - Lead end-to-end response activities for high-severity security incidents, from detection and triage through containment, eradication, and recovery. - Investigate complex cybersecurity events across cloud environments using advanced Digital Forensics and Incident Response (DFIR) methodologies. - Coordinate incident communications and provide clear updates to technical and executive stakeholders during critical events. - Design and improve detection strategies, including SIEM use cases, telemetry pipelines, and alerting mechanisms in collaboration with engineering teams. - Develop and enhance automation initiatives and AI-assisted workflows to accelerate investigations and improve response consistency. - Partner with threat intelligence teams to contextualize emerging threats and strengthen detection coverage. - Conduct root cause analyses and lead post-incident reviews to identify improvements and reduce future risks. - Create and maintain operational documentation, including runbooks, playbooks, and incident response procedures. - Collaborate with cross-functional stakeholders on proactive security initiatives, tabletop exercises, and resilience programs. - Mentor team members and contribute to the continuous maturity and scalability of incident response operations. ### Requirements: - Significant experience in security incident response, digital forensics, and investigations within cloud-first environments. - Hands-on expertise with AWS and/or Google Cloud Platform security operations and incident handling. - Strong experience with SIEM platforms, EDR solutions, and detection engineering practices. - Solid understanding of threat intelligence frameworks and adversary techniques, including familiarity with MITRE ATT&CK. - Experience developing automation solutions using scripting languages such as Python or leveraging SOAR platforms. - Interest or practical experience in applying AI, machine learning, or data-driven methodologies to security operations. - Strong analytical and problem-solving skills, with the ability to perform effectively during high-pressure incidents. - Experience using Git-based platforms within engineering or security environments. - Excellent written and verbal communication skills, with the ability to produce clear documentation and executive-level updates. - Demonstrated growth mindset, proactive approach to risk reduction, and commitment to continuous improvement. - Ability to participate in a rotating on-call schedule supporting a global, 24/7 incident response function. ### Benefits: - Fully remote work environment with opportunities to collaborate across globally distributed teams. - Flexible paid time off policy promoting work-life balance and personal wellbeing. - Comprehensive health and wellness benefits designed to support employees and their families. - Equity compensation and employee stock purchase opportunities. - Dedicated growth and development budget for training, certifications, conferences, an…