Endpoint Security Solutions (ESS) Systems Engineer ? Level 1 (VA, Quantico)

Required Qualifications

• Active TS/SCI clearance eligibility required at contract start.
• Minimum of seven (7) years of progressive experience operating, securing, and administering enterprise IT systems with a strong focus on endpoint security.
• Demonstrated senior-level expertise administering and supporting the Trellix Enterprise Security Suite, including: ePolicy Orchestrator (ePO) Endpoint Security (ENS) Policy Auditor (PA) Data Loss Prevention (DLP) Trellix Application and Change Control (TACC) Other DoD-mandated endpoint security applications
• ePolicy Orchestrator (ePO)
• Endpoint Security (ENS)
• Policy Auditor (PA)
• Data Loss Prevention (DLP)
• Trellix Application and Change Control (TACC)
• Other DoD-mandated endpoint security applications
• Experience integrating endpoint security platforms into enterprise cybersecurity environments.
• Experience installing, configuring, troubleshooting, and maintaining enterprise hardware, software, and system accounts.
• Experience leading vulnerability assessments, STIG implementation, RMF compliance activities, and continuous monitoring programs.
• Expert knowledge of Microsoft Windows and Linux operating systems in enterprise environments.
• Advanced troubleshooting and problem-solving skills in complex, multi-platform environments.
• Strong customer service, communication, and stakeholder engagement skills.
• Ability to communicate technical concepts, findings, and recommendations to both technical and non-technical audiences.
• Must meet DoDM 8140.03 foundational requirements for Work Role Code (WRC) 451 ? System Administrator.

Preferred Qualifications

• Experience providing technical leadership and mentoring junior and mid-level engineers.
• Experience supporting cybersecurity operations within Federal, DoD, Intelligence Community, or classified environments.
• Experience supporting Security Operations Center (SOC) activities, enterprise monitoring programs, or continuous diagnostics and mitigation initiatives.
• Experience preparing executive-level compliance reports, security assessments, and incident response briefings.
• Familiarity with additional enterprise cybersecurity tools, platforms, and architectures used within DoD environments.
• Experience supporting enterprise security architecture, platform modernization, and security hardening initiatives.
• Familiarity with additional DoDM 8140.03 work roles and associated cybersecurity requirements.
• Additional Trellix, cybersecurity, or DoD-recognized advanced certifications.

Required Certifications