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Endpoint Security Systems Engineer – Cybersecurity Specialist

USAFull-time$67,400–$67,4002026-10-09
HybridCitizens onlySecurity clearance required

Core

Senior endpoint security systems engineer responsible for administering, upgrading, and hardening Trellix ePO and endpoint agents across on-premises and cloud IaaS environments to protect mission-critical systems.

Role type

Senior hands-on IC endpoint security systems engineer

Builds

Enterprise host-based defense architecture using Trellix and Elastic agents (via careerplan.io/jobs/gd76f5d0-endpoint-security-systems-engineer-cybersecurity-specialist-at-sassi)

Domain

Cybersecurity, Endpoint Security, Defense-in-Depth

Required skills

Trellix ePO administration, Trellix Agent deployment, Elastic Agent configuration, Linux/Windows/macOS security, DISA STIG compliance, Cloud IaaS security, Troubleshooting agent connectivity, Scripting (PowerShell/Bash/Python)

Preferred skills

Trellix Solidcore, Elastic Defend, Apple MDM/JAMF Pro, DISA COAMS/CMRS integration, Cloud networking (AWS/Azure/GCP), MITRE ATT&CK framework

Technologies

Trellix ePO, Trellix Agent, Elastic Agent, Elastic Defend, AWS, Azure, GCP, Linux, Windows, macOS, RHEL, Bash, PowerShell, Python

Responsibilities

Maintain and upgrade Trellix ePO consoles across multi-tier networks and cloud VPCs. Engineer and sustain Trellix and Elastic Agent capabilities for lifecycle management. Integrate and manage endpoint agents on on-premises and cloud IaaS systems. Design and deploy scan exclusions, behavioral rules, and DLP policies. Diagnose and resolve agent connectivity and registration issues. Troubleshoot product installation failures on mission systems. Investigate and correct ePO console configuration and policy inheritance errors. Maintain alignment with DISA STIGs and security requirements. Collaborate with threat detection teams to implement signatures and containment policies.