Security System Administrator - DoD RMF/CMMC Expert

Kratos Space Training & Cyber; Orlando (FL); On-site; USD 85,000 - 115,000; Full time

Job summary

Kratos Defense in Orlando seeks an onsite Security System Administrator to work with cybersecurity compliance personnel implementing RMF and CMMC controls. You will manage Windows/Linux servers, AD, virtualization, and network security, while supporting vulnerability remediation and incident response.

Required DoD Secret clearance capability, a relevant BS, 3–5 years of hands-on admin or cybersecurity experience, and certifications (Security+, CASP+ or equivalent).

Qualifications

• Current or ability to obtain a DoD Secret Security Clearance.
• BS in Information Technology, Cybersecurity, or similar subject.
• 3–5 years of hands-on systems administration or cybersecurity experience, Windows and Linux.
• Industry certification to meet DoDD 8140.03 IAT II requirements (Security+, CASP+...).
• Ability to execute and coordinate technically complex changes on an operational IT system.
• Strong interpersonal and communication skills; able to triage priorities and train users.
• Independent problem-solving, self-direction; works well solo and in a team.

Responsibilities

• Administer and maintain physical and virtual Windows and Linux servers and infrastructure.
• Configure, secure, monitor, troubleshoot, and maintain OSes, applications, virtualization, and network devices.
• Administer Active Directory, Group Policy, accounts, authentication, and access controls.
• Manage Linux systems, including user access, services, SSH, and security configurations.
• Administer and maintain virtualization infrastructure (VMs, hypervisors, virtual networks).
• Configure and maintain network infrastructure (switches, VLANs, ACLs) and security tech.
• Implement secure configuration baselines for OSes, apps, and devices.
• Apply patches and changes per patch management procedures.
• Support vulnerability assessments and remediation within timelines.
• Support incident response activities (identification, containment, remediation, recovery).
• Maintain least-privilege access controls and periodic reviews.
• Develop and maintain scripts to improve automation and evidence collection.
• Participate in security reviews, audits, vulnerability assessments, and pen tests.

Skills

Interpersonal skills

Independent problem-solving

Team collaboration

Communication skills

Education

BS in Information Technology

Cybersecurity degree or related

Tools

SCAP Compliance Checker

STIG Viewer

VMware / Hyper-V

PowerShell / Bash / Python automation

Job description

Kratos Defense in Orlando seeks an onsite Security System Administrator to work with cybersecurity compliance personnel implementing RMF and CMMC controls. You will manage Windows/Linux servers, AD, virtualization, and network security, while supporting vulnerability remediation and incident response.

Required DoD Secret clearance capability, a relevant BS, 3–5 years of hands-on admin or cybersecurity experience, and certifications (Security+, CASP+ or equivalent).