RMF Cybersecurity Analyst (Linux Systems)

i3 is seeking an RMF Cybersecurity Analyst with Linux expertise to support an Army program focused on Risk Management Framework (RMF) compliance and continuous monitoring of Linux-based systems.

This role is cybersecurity-first, with primary responsibility for vulnerability management, STIG compliance, and RMF artifact development, supporting enterprise Linux environments within a secure DevSecOps infrastructure.

The selected candidate will work closely with cybersecurity, system engineering, and operations teams to ensure Linux systems meet DoD RMF requirements, maintain compliance, and support Authorization to Operate (ATO) objectives.

Candidates must possess a United States SECRET security clearance.

RMF & Cybersecurity (Primary Focus)

• Perform vulnerability scanning using Nessus (ACAS) across Linux environments.
• Analyze scan results and conduct vulnerability triage and prioritization.
• Execute and track scan remediation activities in coordination with system owners and engineers.
• Develop, maintain, and validate Plan of Action and Milestones (POA&M) artifacts.
• Apply and validate DISA STIGs for Linux operating systems (e.g., RHEL 8/9).
• Support RMF 2.0 lifecycle activities, including:
• Control implementation
• Continuous monitoring
• Security control assessments
• Maintain and update eMASS artifacts, including controls, vulnerabilities, and system status.
• Support Independent Security Assessments (ISA) and ATO sustainment activities.
• Ensure alignment with NIST 800-53 / CNSSI 1253 controls and DoD cybersecurity policies.

Linux Systems Support (Secondary / Enabling Role)

• Administer and maintain Linux systems (RHEL/CentOS) in secure environments.
• Implement and validate security hardening configurations.
• Support patching and configuration management to remediate vulnerabilities.
• Assist with system baselining and compliance validation.
• Collaborate with DevSecOps teams to integrate security into CI/CD pipelines.
• Support the automation of remediation activities using tools such as Ansible.

• Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or related field with 6+ years of experience, or 10+ years equivalent experience.
• Strong hands-on experience with:
• Nessus / ACAS vulnerability scanning
• STIG implementation and validation
• POA&M development and management
• RMF processes and continuous monitoring
• Familiarity with:
• NIST 800-53 controls
• eMASS or equivalent RMF tools
• Experience working within DoD RMF environments (ATO lifecycle).
• Experience administering Linux systems (RHEL preferred).
• Ability to interpret and remediate security findings on Linux platforms.
• Must meet DoD 8140 (IAT Level II or higher) requirements (e.g., Security+, SSCP, GSEC).
• U.S. Citizenship required.
• Active Secret clearance required. Must be able to maintain the security clearance required for this position.

Desired/Preferred:

• Familiarity with:
  • Red Hat Satellite
  • OpenShift / Kubernetes environments
  • DevSecOps pipelines
• Experience supporting Army or DoD enterprise environments.
• Experience with automation tools (Ansible, Terraform) for remediation.
• Linux certification (e.g., RHCSA, Linux+).
• Understanding of Zero Trust architecture principles.

Knowledge/Skills

• Knowledge of office administration and procedures.
• Exceptional judgment capabilities and relationship management skills.
• Excellent communication, teamwork, and client service skills; ability to clearly communicate in discussions and written documents, and to deliver feedback clearly and tactfully.
• Interact with a diverse array of customers and staff in a professional and courteous manner.
• Work independently with accountability for accurate and complete results.
• Be extremely organized and exceptionally detail oriented.
• Work well both independently and in a team environment.
• Be energized by a fast-paced work environment.
• Must be able to communicate with others effectively.
• Analyze information and respond appropriately.
• Manage time wisely and prioritize tasks.
• Provide superior customer service. 
• Multi-task in a pleasant manner.
• Work well under pressure.

PHYSICAL DEMANDS

• The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.
• While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; handle or feel; and reach with hands and arms.
• The employee is occasionally required to sit; climb or balance; and stoop, kneel, crouch or crawl. The employee must be able to lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds.
• Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception and ability to adjust focus.
• Regular i3 hours are 8:00 a.m. - 5:00 p.m. Monday-Friday, however, additional hours may be required on occasion. Regular and punctual attendance is required.

i3 is a technically diverse, 100% team member owned business, headquartered in Huntsville, Alabama specializing in missile and aviation systems engineering and logistic services, electronic warfare and electromagnetic effects analysis, UAS system integration and flight operations, full lifecycle C5ISR engineering services, cybersecurity and IT/IA innovative solutions and virtual training, simulation & serious game development and implementation. We have established a broad offering of products and capabilities collectively providing decades of experience supporting the full complement of DoD military services, Missile Defense Agency, National Aeronautics and Space Administration, and a variety of other Government organizations and private industry customers.

Perks of being a team member owner include:

• Long-term financial security
• Higher job satisfaction
• Greater job security
• Personal and professional growth
• Great company culture

Other outstanding benefits:

• Excellent insurance coverage
• 401(k) match
• Generous PTO
• Health and wellness incentives
• Tuition and certification reimbursement
• Countless opportunities to give back to the community through i3 Cares

We work hard. We compete hard. We play hard. Apply now to join us!