Stefanini Group is seeking a skilled Cyber Security Services (CSS) Incident Response (IR) Engineer to join our Security Operations Center (SOC), which operates as a Managed Security Service Provider (MSSP).
As a CSS IR Engineer, you will manage security incidents, develop incident response processes, and enhance security configurations tailored to client needs. Your expertise will be crucial in reducing false positives and identifying security gaps within the client's IT infrastructure.
Work Schedule: Two rotating 8.5-hour shifts within the 7:00 a.m.-Own assigned security alerts, incidents, and escalated tickets, providing technical guidance and resolving investigation or response issues.
Lead investigations across endpoint, identity, email, network, cloud, and other available telemetry sources.
Analyze endpoint and Microsoft Entra ID activity to identify indicators of compromise, suspicious access, malicious execution, persistence, privilege escalation, lateral movement, and other adversary techniques.




Interpret correlated investigation results from SentinelOne Singularity Data Lake, PowerQuery, Microsoft Entra ID, and other security platforms.
Produce operational reporting covering alert volumes, case status, investigation outcomes, false positives, detection and automation performance, service-level results, tool and log-source health, and MTTR.
Conduct forensic analysis and support structured threat hunting and proactive detection initiatives based on emerging threats, vulnerabilities, TTPs, and observed attack patterns.
Contribute to security improvements by maintaining procedures, playbooks, workflows, investigation guides, and technical documentation, and by recommending improvements to detection, monitoring, and response processes.
Present incident findings and recommendations to security teams and stakeholders; Bachelor's degree in computer science, Information Technology, Engineering, or a related field.
Excellent English communication skills, both verbal

📌 Cyber Security Services Incident Response Engineer (Madrid)
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