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Computer Network Defense Analyst - Rmantras with Security Clearance

RmantrasArlington, VA🇺🇸United StatesPosted Oct 22, 2026

Why This Role Stands Out

Elevate your cybersecurity career with Rmantras, where you will tackle high-impact network defense initiatives and influence enterprise security strategies in a dynamic, collaborative environment. This role is perfect for a detail-oriented professional with an active TS/SCI clearance who thrives on hands-on technical problem-solving and proactive threat mitigation. Apply today to secure your place in this mission-critical team and accelerate your professional growth.

Quick Overview

Seniority
Mid Senior
Employment type
Employee
Work mode
On Site
Location
Arlington, VA, United States
Posted
21 hours ago

Job Description

This position is 100% Onsite. This position is in Arlington, VA, with occasional/situational travel. Certificate DoDD 8140 IAT Level II (or Level III) certification (e.g., Security+ CE).

Location: Arlington, VA Schedule 100% onsite Clearance US Citizen with TS/SCI US Government Security Clearance to start Responsibilities Qualifications

  • Perform computer network incident detection and response activities to detect, correlate, identify, and characterize anomalous activity indicative of threats to the CESO enterprise.
  • Monitor security tools and applications for possible malicious activity, investigate associated alerts or indicators, and develop recommendations for a course of action, including mitigation strategies as required.
  • Document each event and its associated analysis in a ticketing system with clear, accurate technical writing so it can be reviewed and acted on appropriately.
  • Maintain regular face-to-face interaction with the customer; handle issues when they are raised by the customer with little or no supervision.
  • Positively influence team performance by improving CESO processes and procedures.
  • Ensure system checks are performed in a timely manner and that documentation is complete and accurate.
  • Assist senior analysts and/or managers with forecasting and modeling current threats.
  • Develop a strong rapport with the customer and serve as a trustworthy network defense analyst.
  • Collaborate with infrastructure, storage, database, and application teams to align network defense monitoring with CESO’s operational requirements as the program transitions to its secure cloud environment. Required Qualifications
  • Bachelor’s degree and 2+ years of related experience; additional experience, education, or training may be considered in lieu of degree.
  • Active TS/SCI security clearance required for this position.
  • DoDD 8140 IAT Level II (or Level III) certification (e.g., Security+ CE).
  • Strong computing systems knowledge with Windows, Red Hat, Cloud (AWS, Azure), and particularly networking, including communication protocols and familiarity with common security elements such as IDS/IPS systems and firewalls.
  • Experience with implementing application/hardware security settings using vendor and DISA best business practices.
  • Candidate may be asked to obtain a CI Polygraph in the future.

Preferred Qualifications

  • Prior CND experience, ideally within a large enterprise or DoD/IC program environment.
  • Experience monitoring intrusion detection and computer network defense appliances, applications, and analyzing associated alerts.
  • Experience documenting analysis and providing response recommendations in a ticketing/case management system.
  • Experience reviewing system logs manually and using automatic SIEMs tools (e.g., SPLUNK, Elastic) and performing network log analysis.
  • Prior experience with DISA and DISA’s support to mission partners.
  • An Understanding of disaster recovery and business continuity concepts as they apply to secure cloud migrations.

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