Senior Security Systems Administrator

Kratos Defense & Security Solutions, Inc.; Colorado Springs (CO); On-site; USD 111,000 - 131,000; Full time

Benefits offered by this job

Life/ADD & Short/Long Term Disability

401(k) Savings Plan

Employee Stock Purchase Plan (ESPP)

Paid Time-Off (PTO)

Holidays

Education Reimbursement

Job summary

Kratos Defense & Security Solutions, Inc. is seeking an experienced System Administrator III to join the Kratos Space team.

The role focuses on administering Windows and Red Hat Enterprise Linux servers, configuring secure baselines, and supporting vulnerability management within a government-focused environment. The ideal candidate has 5–8 years of hands-on experience, DoD/IC readiness or ability to obtain TS/SCI clearance, and applicable certifications (Security+, CASP+).

Qualifications

• > Current DoD-style clearance considerations and security training required.
• "> BS in IT/Cybersecurity or related field.
• "> 5–8 years hands-on systems administration or cybersecurity experience.
• "> Certifications per DoDD 8140.03 IAT II requirements (Security+, CASP+, etc.).

Responsibilities

• Administer and maintain Windows and Linux servers and infrastructure.
• Configure, secure, monitor, troubleshoot, and maintain OSs, applications, virtualization, and network devices.
• Manage Active Directory, Group Policy, accounts, authentication, and access controls.
• Manage Linux systems: users, services, SSH, logging, security configurations.
• Administer virtualization infra: VMs, hypervisors, virtual networking, security controls.
• Implement secure baselines and apply patches per procedures.
• Support vulnerability assessments and remediation within timelines.
• Support incident response: identification, containment, investigation, remediation, recovery.

Skills

TS/SCI clearance eligibility

Windows & Linux admin

Security certifications (Security+,CAS

Education

Bachelor's degree in Information Technology or Cybersecurity

Tools

SCAP Compliance Checker

EvaluateSTIG

STIG Viewer

VMware

Hyper‑V

Job description

Kratos Defense & Security Solutions, Inc. is seeking an experienced System Administrator III to join the Kratos Space team.

The role focuses on administering Windows and Red Hat Enterprise Linux servers, configuring secure baselines, and supporting vulnerability management within a government-focused environment. The ideal candidate has 5–8 years of hands-on experience, DoD/IC readiness or ability to obtain TS/SCI clearance, and applicable certifications (Security+, CASP+).