Leidos is an innovation company addressing some of the world’s most complex challenges in national security and health. With 47,000 employees worldwide, we partner with our customers to deliver smarter, technology-forward solutions.
We are seeking an Information Assurance Administrator to support our Defense Systems Sector.
In this role, you’ll support the secure and compliant operation of classified and unclassified systems. You’ll manage ATO documentation, perform system audits, conduct vulnerability scans, and support engineers and local users with system administration tasks. You will work closely with U.S. Government IWS6 customers to support secure classified programs, maintain continuity of operations, and ensure mission readiness.
Primary Responsibilities
Administer Windows and Linux systems
Build/maintain Linux/Windows workstations and servers to DoD STIG standards
Configure switches and firewalls; perform basic network troubleshooting
Conduct vulnerability assessments (SCAP, ACAS/Nessus, DISA STIGs)
Perform periodic maintenance including OS patching and virus definition updates
Support ticket requests, user account management, password resets, and account unlocks
Resolve file-level permission issues across Linux and Windows environments
Maintain system security and recovery processes in accordance with RMF and DoD policies
Install hardware and software as required
Basic Qualifications
Active DoD Secret clearance with ability to obtain Top Secret
Bachelor’s degree in Information Security, Information Systems, Cybersecurity, IT/Network Administration (or 4–8 years direct experience in lieu of degree)
Current DoD 8570.01 IAM II certification (Security+ w/ CE) or ability to obtain within 6 months
Working knowledge of Windows and Linux systems; 4+ years Linux administration experience
Experience administering Linux in a Windows domain environment
1–3 years configuring switches and firewalls (Cisco experience strongly preferred)
Experience with RMF, NIST, CNSS, DSS, and DoD cybersecurity directives
Strong customer service skills; ability to independently prioritize multiple tasks
Must be willing to pursue CISSP and RHCSA within first year of employment
Security+ and Linux certification (Red Hat or Linux+)
We’re not looking for perfectly polished resumes or perfect fits. We’re looking for people who break limits, ask hard questions, and don’t wait to be told what’s next. At Leidos, we’re not following the roadmap — we’re redrawing it.
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.