Security Engineer III, SIEM Engineer (Secret Clearance)

What we offer

Location: Arlington, VA (remote).

Deloitte's Cyber Defense and Resilience team provides a remote-friendly work arrangement and a discretionary annual incentive program. In this Security Engineer III, SIEM Engineer role, you will focus on security monitoring, detection engineering, and incident analysis across complex enterprise environments, with an emphasis on building and tuning SIEM content to improve alert fidelity and support incident response.

Role responsibilities

• Configure, maintain, and optimize SIEM content including correlation rules, alerts, dashboards, and reports
• Analyze security events and log data to identify suspicious activity, support investigations, and improve detection coverage
• Integrate and normalize log sources from endpoint, network, cloud, identity, and security platforms
• Collaborate with cybersecurity teams to support use case development, threat detection, incident triage, and response activities
• Document detection logic, operational procedures, and monitoring requirements to support consistent service delivery

Requirements

• Bachelor's degree in computer science, Cybersecurity, Information Technology, Engineering, or a related technical field
• Active Secret Clearance
• 3+ years of experience in cybersecurity, security operations, or SIEM engineering
• 3+ years of experience with at least one of the following: Splunk, Palo Alto XSIAM, or CrowdStrike NG SIEM
• Creating, tuning, and maintaining correlation searches, alerts, dashboards, and reports in a SIEM platform
• Reviewing and analyzing logs from endpoint, network, cloud, identity, and application sources
• Security certification such as Splunk certification, Palo Alto Networks certification, or CrowdStrike certification is required
• Ability to travel up to 20% on average
• Willingness to work onsite at a client site or Deloitte office for up to 5 days a week
• Legal authorization to work in the United States without employer sponsorship now or in the future

Technologies

• Splunk
• Palo Alto XSIAM
• CrowdStrike NG SIEM
• Amazon Web Services
• Microsoft Azure
• Google Cloud Platform

Preferred qualifications

• Experience supporting enterprise monitoring in a Security Operations Center
• Experience onboarding and normalizing log sources in a SIEM platform
• Experience mapping detections to MITRE ATT&CK techniques
• Experience with cloud security monitoring in AWS, Azure, or Google Cloud Platform
• Hands-on experience with scripting or query languages used for detection and log analysis
• Security certification such as CompTIA Security+ or GIAC certification