Security Engineer – Endpoint Security Tool Monitoring

Join Leidos in Alexandria, VA (onsite) supporting the Defense Manpower Data Center (DMDC) CyberPRIMES program. This Security Engineer role helps ensure enterprise endpoint-security monitoring stays accurate, actionable, and compliant by validating tool deployment, configuration, reporting, and data rollup into continuous monitoring and risk scoring capabilities. You will work within a Defense-focused environment where thorough technical oversight and clear documentation directly support cybersecurity visibility and threat response.

Responsibilities

• Provide cybersecurity monitoring and oversight of endpoint-security capabilities across the DHRA enterprise.
• Validate that endpoint-security tools are properly deployed, configured, operational, and reporting required data.
• Verify upstream rollup of endpoint-security data into applicable enterprise cybersecurity monitoring and reporting systems.
• Validate endpoint-security reporting through the Defense Information Systems Agency Continuous Monitoring and Risk Scoring (DISA CMRS) capability, as applicable.
• Maintain weekly records of endpoint-security data-rollup validation, coverage, configuration status, and identified deficiencies.
• Identify and document systems or environments with incorrect configuration, incomplete reporting, or missing endpoint-security data.
• Escalate endpoint-security configuration, connectivity, coverage, and reporting issues for corrective action.
• Develop recommendations to optimize endpoint-security configurations to improve data collection, alert generation, visibility, and threat response.
• Provide technically supported configuration recommendations to Government tool administrators for implementation.
• Support network and server security scanning and validation activities tied to endpoint-security monitoring.
• Perform compliance checks and cross-reference endpoint-security results against applicable Department of Defense, DHRA, and DMDC cybersecurity requirements.
• Troubleshoot endpoint-security tool configuration, connectivity, deployment, data rollup, and reporting issues.
• Support Tier 2 troubleshooting and coordinate resolution with Government tool administrators, system owners, network and infrastructure teams, and cybersecurity personnel.
• Evaluate recurring endpoint-monitoring results to identify coverage gaps, configuration trends, or systemic issues impacting enterprise cybersecurity posture.
• Document monitoring results, technical findings, corrective actions, and configuration recommendations.
• Support improvements to endpoint-monitoring procedures, technical baselines, and cybersecurity monitoring practices.

Requirements

• Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, Engineering, or a related technical discipline and 4+ years of relevant professional experience; in lieu of degree, additional experience may be required.
• Experience supporting endpoint-security technologies, cybersecurity monitoring, security engineering, or enterprise cybersecurity operations.
• Experience validating deployment, configuration, connectivity, or reporting of endpoint-security tools.
• Experience troubleshooting endpoint-security, server, workstation, or enterprise security-tool issues.
• Experience with cybersecurity scanning, mitigation, compliance checking, or security configuration assessment.
• Understanding of endpoint-security telemetry, security-event generation, centralized monitoring, and enterprise data-rollup concepts.
• Experience documenting technical findings, configuration issues, corrective actions, and remediation recommendations.
• Ability to work effectively with Government customers, cybersecurity personnel, system administrators, engineers, and IT operations teams.
• U.S. Citizenship required.
• Active Secret security clearance required.

Technologies

• DISA Continuous Monitoring and Risk Scoring (CMRS)
• Enterprise Mission Assurance Support Service (eMASS)
• Risk Management Framework (RMF)
• Trellix, Tanium (endpoint security tooling)

Benefits

• Competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

Preferred Qualifications

• Experience supporting Department of Defense endpoint-security or enterprise cybersecurity environments.
• Experience with enterprise endpoint detection, endpoint protection, vulnerability scanning, configuration-monitoring, or comparable cybersecurity technologies.
• Experience with DISA CMRS or comparable continuous-monitoring and compliance-reporting capabilities.
• Experience validating cybersecurity-tool coverage against enterprise asset inventories.
• Experience supporting Commercial-Off-The-Shelf (COTS) cybersecurity tools in large enterprise environments.
• Experience performing Tier 2 cybersecurity troubleshooting and coordinating technical issues through resolution.
• Familiarity with Department of Defense continuous-monitoring, Risk Management Framework, and cybersecurity compliance requirements.
• Familiarity with DHRA, DMDC, or comparable Department of Defense enterprise environments.

Salary: USD 87,100 - 157,450 per year.