Onsite Senior Security Systems Administrator (RMF/CMMC)

Kratos Defense & Security Solutions, Inc.; Orlando (FL); On-site; USD 90,000 - 150,000; Full time

Benefits offered by this job

Life/AD&D Insurance

401(k) Savings Plan

Employee Stock Purchase Plan (ESPP)

Paid Time-Off (PTO)

Holidays

Education Reimbursement

Job summary

Kratos Defense & Security Solutions, Inc. is hiring an onsite Security System Administrator to implement security controls, maintain secure configurations, and support RMF/CMMC compliance.

You will work with cybersecurity personnel to remediate vulnerabilities, produce evidence of control implementation, and assist with security assessments. The role requires administering Windows and Linux servers, AD, virtualization, and network security, with a focus on least privilege and proper access

Qualifications

• DoW Secret (or Interim Secret) Security Clearance.
• BS in Information Technology, Cybersecurity, or similar.
• 3–5 years of hands-on systems administration or cybersecurity experience, with Windows and Linux environments.
• Certification to meet DoDD 8140.03 IAT II requirements (Security+, CASP, etc.).
• Ability to execute, manage, and coordinate technically complex changes on an operational IT system.

Responsibilities

• Administer and maintain Windows and Linux servers and infrastructure.
• Configure, secure, monitor, troubleshoot, and maintain OSs, applications, virtualization platforms, and network devices.
• Administer AD, Group Policy, and access controls.
• Manage Linux systems including SSH, security configurations, and logging.
• Maintain virtualization infrastructure (VMs, hypervisors, virtual networking).
• Configure networks with switches, VLANs, ACLs, and security controls.
• Implement secure baselines and patch management procedures.
• Support vulnerability assessments and remediation within timelines.
• Assist with NN-801 assessments and provide evidence of controls.

Skills

Security Clearance

Windows & Linux

IAT II Certification

Strong communication

Independent problem solving

Education

BS in IT/Cybersecurity

Tools

Windows Server

Linux

Active Directory/Group Policy

VMware/Hyper-V

Firewalls/Switches

SCAP/STIG tools

Job description

Kratos Defense & Security Solutions, Inc. is hiring an onsite Security System Administrator to implement security controls, maintain secure configurations, and support RMF/CMMC compliance.

You will work with cybersecurity personnel to remediate vulnerabilities, produce evidence of control implementation, and assist with security assessments. The role requires administering Windows and Linux servers, AD, virtualization, and network security, with a focus on least privilege and proper access