Leidos · 2 weeks ago
Endpoint Security as a Service (ESS) Engineer
Washington, DC
Full-time
Onsite
Senior Level, Lead/Staff
$92K/yr - $167K/yr
8+ years expLeidos is seeking a skilled and driven Endpoint Security as a Service (ESS) Engineer and Systems Administrator to join our team at the Washington Navy Yard — where innovation meets mission. The role involves maintaining and optimizing advanced security solutions to ensure critical network infrastructure runs at peak performance, while also evaluating emerging technologies for endpoint protection.
ComputerGovernmentInformation ServicesInformation TechnologyNational SecuritySoftware
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Overseeing the full lifecycle of the ESS and its agents — install, manage, maintain, and optimize
Creating and deploying custom ESS signatures and policies
Proactively monitoring ESS for intrusions, failures, and performance anomalies
Ensuring reliable and secure endpoint operations across all clients and servers
Troubleshooting ESS deployments and policy rollouts across local and remote systems
Conducting threat analysis and crafting custom security rules tailored to advanced exploits and vulnerabilities
Providing in-depth reporting on system health, event trends, and module performance
Supporting major updates and compliance efforts, including STIG-mandated Trellix upgrades
Helping design and evaluate network components and develop cutting-edge technical solutions
Qualification
Required
Active Top Secret clearance (SCI eligible)
8+ years of IT experience, including 2+ years focused on ESS (or equivalent experience in lieu of degree)
DOD 8570 IAT Level II certification or higher
Expertise in Windows Server 2016+ and endpoint platforms such as Trellix Agent, ENS FW, PA, DLP, RSD, and ePO
Strong analytical skills with a knack for troubleshooting under pressure
Preferred
TS/SCI clearance
DOD 8570 IAT Level III certification
Hands-on experience with RedHat Enterprise Linux, VMware, Microsoft Hypervisor, or RedHat VM Manager
Familiarity with SADR environments and maintaining ePO servers
Completion of Basic and Advanced ESS DISA training
Company
Leidos
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.
10001+ employees
Funding
Current Stage
Public CompanyTotal Funding
unknown2025-02-20Post Ipo Debt
2013-09-17IPO
Leadership Team
James Carlini
Chief Technology Officer
Theodore Tanner
Chief Technology Officer
Recent News
MarketScreener
2025-12-16
2025-12-16
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