Sr. Endpoint Security Engineer I (6701)

MetroStar•Washington, DC

21h•$138,000 - $166,000

About The Position

As a Sr. Endpoint Security Engineer (Trellix) I, you’ll serve as the technical lead for the organization's endpoint security and data protection ecosystem, balancing day-to-day operational support with strategic cybersecurity engineering initiatives. You will work closely with security operations, infrastructure, application teams, and leadership to strengthen the organization's overall security posture. We know that you can’t have great technology services without amazing people. At MetroStar, we are obsessed with our people and have led a two-decade legacy of building the best and brightest teams. Because we know our future relies on our deep understanding and relentless focus on our people, we live by our mission: A passion for our people. Value for our customers.

Requirements

Active TS/SCI security clearance.
5+ years of experience administering and engineering Trellix security solutions in a large enterprise environment.
Hands-on experience with Trellix ePolicy Orchestrator (ePO), Endpoint Security (ENS), Endpoint Detection and Response (EDR), Data Loss Prevention (DLP), Drive Encryption (FRP/FRMP), Threat Intelligence Exchange (TIE), Data Exchange Layer (DXL), Policy Auditor, Rogue System Detection, Trellix Security for Microsoft Exchange (TSME), Application and Change Control (Solidcore), and File Integrity Monitoring (FIM).
Experience implementing and managing application whitelisting, endpoint hardening, encryption, and data protection technologies; integrating endpoint security platforms with SIEM, SOAR, threat intelligence, and identity management solutions.
Strong understanding of endpoint security architecture, cyber threat detection, incident response, and risk management principles; experience developing and maintaining DLP policies, device control mechanisms, and data exfiltration prevention controls.
Experience supporting SOCs and enhancing 24x7 threat monitoring and response capabilities; ability to develop security engineering standards, SOPs, playbooks, and operational procedures.
Experience supporting compliance initiatives and implementing security controls aligned with federal cybersecurity frameworks and regulations; strong analytical, troubleshooting, and root-cause analysis skills.

Responsibilities

Monitoring and managing enterprise Trellix security platforms, including ePO, ENS, EDR, DLP, and encryption technologies.
Supporting SOC analysts by tuning alerts, improving detection capabilities, and investigating endpoint security events.
Remediating JCIP and compliance findings through application whitelisting, File Integrity Monitoring (FIM), DLP enhancements, and security control implementations; designing and deploying endpoint hardening and application control solutions using Trellix Application and Change Control (Solidcore).
Developing and maintaining DLP policies, encryption controls, removable media protections, and data classification safeguards; integrating endpoint security telemetry into SIEM and SOAR platforms to improve visibility, detection, and automated response capabilities.
Performing root-cause analysis of security incidents, policy conflicts, and endpoint management issues; developing automation workflows and operational efficiencies using scripts, APIs, and orchestration tools.
Creating and maintaining dashboards, reports, and metrics to support cybersecurity operations and executive reporting; collaborating with security assessors and compliance teams to implement and validate technical controls.
Documenting security architectures, SOPs, playbooks, and engineering standards; researching emerging threats, evaluating new security capabilities, and recommending improvements to strengthen enterprise cyber defenses.