Senior Cyber Operations Analyst

ECS; Fairfax (VA); Hybrid; USD 170,000 - 190,000; Full time

Job summary

Everforth ECS in Fairfax, VA is seeking a Senior Cyber Operations Analyst to support a DISA AWS environment handling CUI. You will serve as the SME for vulnerability management and endpoint security, operating ACAS and Trellix/ePO, tuning policies, and coordinating remediation with technical teams.

The role requires strong analytical skills, ability to produce dashboards and reports for cybersecurity leadership, and to work up to 3 days per week in a hybrid capacity from Fairfax.

Qualifications

• U.S. Citizen required.
• Ability to obtain Secret clearance (active preferred).
• Active DoD 8140 IAT Level II Security+ (or higher).
• Ability to work up to 3 days a week in a hybrid capacity out of Fairfax, VA.
• 8+ years of cybersecurity experience with a strong background in vulnerability management and endpoint security.
• Experience administering ACAS and Trellix (ePO, policies, agent health, reporting).
• Ability to independently manage ACAS and Trellix operations.

Responsibilities

• Serve as the primary operational SME for ACAS vulnerability management and endpoint security capabilities.
• Operate and configure ACAS policies, targets, credentials, schedules, and reporting; manage Trellix/ePO endpoints and reporting.
• Create, modify, and execute routine and ad hoc vulnerability scans based on requirements and CVEs.
• Troubleshoot credentialed scanning, authentication failures, and incomplete scan coverage.
• Analyze results, validate findings, and coordinate remediation with technical teams.
• Review endpoint security alerts and coordinate escalation to SOC as needed.
• Tune policies and exclusions to reduce false positives while maintaining protections.
• Develop dashboards, reports, and trend analysis for cybersecurity leadership and RMF tracking.

Skills

Vulnerability management

Endpoint security

Policy tuning

Incident coordination

DoD 8140 IAT Level II

RMF

ACAS operations

Trellix operations

Education

DoD 8140 IAT Level II Security+ (or higher)

Tools

ACAS

Trellix

ePolicy Orchestrator (ePO)

Microsoft Defender

Job description

Senior Cyber Operations Analyst

Everforth ECS is seeking a Senior Cyber Operations Analyst to work in a hybrid capacity at our Fairfax, VA office.

The Senior Cyber Operations Analyst will support a newly established DISA AWS environment handling CUI. This position will serve as the primary subject matter expert for vulnerability management and endpoint security operations, with responsibility for operating ACAS and managing Trellix, including ePO, endpoint security policies, agent health, alerts, and reporting.

The ideal candidate is a technically strong cybersecurity professional who can independently analyze vulnerability and endpoint security data, configure and modify scans and security policies, troubleshoot operational issues, develop reports and metrics, and coordinate remediation with technical teams.

The Senior Cyber Operations Analyst reports to the Senior Information System Security Manager.

Job Responsibilities

• Serve as the primary operational SME for ACAS vulnerability management and endpoint security capabilities.
• Operate and configure:
• ACAS, including scan policies, targets, credentials, schedules, plugin settings, and vulnerability reporting.
• Approved endpoint security technologies such as Trellix, Microsoft Defender, or similar platforms, including policies, settings, agent health, exclusions, alerts, and security coverage.
• Create, modify, and execute routine, targeted, and ad hoc vulnerability scans based on operational requirements, DTOs, CVEs, and other cybersecurity directives.
• Troubleshoot credentialed scanning, authentication failures, incomplete scan coverage, plugin issues, and other conditions affecting scan results.
• Analyze vulnerability results to identify affected assets, validate findings, identify trends, support remediation efforts, and verify closure through rescanning.
• Review and investigate endpoint security alerts, malware detections, policy violations, and other suspicious activity and coordinate escalation to the SOC when additional investigation or incident response is required.
• Tune endpoint security policies, configurations, and exclusions to reduce false positives while maintaining required security protections.
• Evaluate DTOs, CVEs, vulnerability notifications, and emerging security issues to determine potential impact to the environment and coordinate validation activities as needed.
• Develop vulnerability and endpoint security dashboards, metrics, reports, spreadsheets, and trend analysis to support cybersecurity leadership, continuous monitoring, POA&M management, and authorization activities.
• Develop and maintain procedures, runbooks, configuration documentation, and operational processes for vulnerability management and endpoint security activities.
• Work with technical teams to coordinate vulnerability remediation, validate corrective actions, track outstanding findings, and improve overall security posture.
• Monitor the health and effectiveness of vulnerability scanning and endpoint security coverage and identify gaps requiring corrective action.
• Support integration of vulnerability and endpoint security data with the program's SIEM and other monitoring capabilities.
• Provide technical evidence, scan results, metrics, and remediation documentation in support of RMF, continuous monitoring, security assessments, and authorization activities.
• Continuously evaluate and improve vulnerability management, endpoint security, reporting, and remediation processes.
• Other duties, as assigned.

Salary: $170,000-190,000

Benefits

General Description of Benefits

Required Skills

• U.S. Citizen.
• Ability to obtain Secret clearance (active preferred)
• Active DoD 8140 IAT Level II Security+ (or higher).
• Ability to work up to 3 days a week in a hybrid capacity out of Fairfax, VA. Additional onsite support may be required based on operational or mission needs.
• 8+ years of cybersecurity experience with a strong background in vulnerability management and endpoint security.
• Experience administering:
• ACAS, including creating and modifying scans, managing targets and credentials, scheduling scans, reviewing plugin results, troubleshooting authentication issues, and producing vulnerability reports.
• Trellix and ePolicy Orchestrator (ePO), including endpoint policies, agent health, alerts, exclusions, updates, deployments, and reporting.
• Ability to independently manage ACAS and Trellix operations.
• Experience with the following:
• Reviewing ACAS results, validating findings, identifying affected systems, coordinating remediation, and confirming closure through rescans.
• Reviewing endpoint security alerts and events, determining when additional investigation or escalation is required, and working with technical teams to address findings.
• Developing vulnerability and endpoint security reports, metrics, dashboards, and spreadsheets for cybersecurity leadership, continuous monitoring, and POA&M tracking.
• Developing and maintaining SOPs for vulnerability management, endpoint security, and related cyber operations in a new environment.
• Ability to evaluate CVEs, DTOs, vulnerability notifications, and other security advisories to determine whether systems are affected and perform targeted validation when needed.
• Working knowledge of Windows, Linux, networking, AWS, and Active Directory as they relate to vulnerability scanning and endpoint security.
• Familiarity with DoD vulnerability management, DISA STIGs, RMF, continuous monitoring, and POA&M processes.
• Strong troubleshooting, documentation, and communication skills with the ability to work directly with engineers and system administrators to resolve security findings.
• Strong problem-solving and decision-making capabilities, with a proven ability to weigh the relative costs and benefits of potential actions and identify the most appropriate solution.
• Highly developed interpersonal and oral/written communication skills, with the ability to effectively and professionally interact with a diverse set of stakeholders (from peers to end-users to executive management).

Desired Skills

• Experience with the following:
• Supporting ACAS and Trellix in a DoW or DISA environment.
• Standing up or taking primary ownership of an enterprise vulnerability management and endpoint security capability.
• Supporting AWS GovCloud or other DoD cloud environments.
• Microsoft Defender or another enterprise endpoint security platform in addition to Trellix.

ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law.

Everforth ECS

Everforth ECS is the federal segment of Everforth, a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.

We Value

• Attracting and developing top talent and high-performing teams
• Fostering a culture that is engaging, accountable, and mission-driven

Meet the challenge. Make a difference with Everforth ECS!