Senior System Administrator - Secure IT Ops & Networking

Leidos; Corridor North (MD); On-site; USD 92,000 - 167,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with company match

Flexible schedules

Education and Training Support

Parental paid leave

Job summary

Leidos is seeking a Mid/Sr System Administrator to support a large, complex network in the Intel Sector’s Cyber & Analytics Business Area (CABA). The role emphasizes fast-paced environments, multiple air-gapped systems, and strong troubleshooting in a security-conscious setting.

The position requires a strong foundation in system administration, security hardening (DISA), and hands-on experience with Linux/Windows servers, Active Directory, and deployment/patch management.

Qualifications

• Bachelor’s Degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related technical field and at least 8 years of relevant experience.
• Substantial experience working as a systems administrator providing direct support to large groups of end users and technical staff.
• At least 5 years of hands-on experience with Linux and Microsoft-based servers/workstations.
• At least 5 years of hands-on experience with OS and application hardening (DISA, best practices, high-assurance).
• At least 5 years of hands-on experience with deployment, patch management, OS, and backup/restore.
• Proficient with Windows Server 2016, 2019, and Active Directory.
• Ability to travel, including CONUS/OCONUS trips annually.
• Clearance: TS/SCI with Polygraph.

Responsibilities

• Install applications and administer systems to ensure reliable operations.
• Optimize server/desktop configurations for continuous performance.
• Perform security management and application performance optimization.
• Maintain complex server enclaves with patching, cert renewals, and vulnerability management.
• Provide documentation for complex server/network environments for incident resolution.
• Communicate outages and upgrades with users and management.

Skills

System administration

Linux

Windows Server

Active Directory

Security hardening

Troubleshooting

DISA standards

Education

Bachelor's Degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related field

Tools

Trellix ePO

SALt

Python

Red Hat 7/8

VMware

Apache Tomcat

IIS

SQL Server

KVMs

Job description

Leidos is seeking a Mid/Sr System Administrator to support a large, complex network in the Intel Sector’s Cyber & Analytics Business Area (CABA). The role emphasizes fast-paced environments, multiple air-gapped systems, and strong troubleshooting in a security-conscious setting.

The position requires a strong foundation in system administration, security hardening (DISA), and hands-on experience with Linux/Windows servers, Active Directory, and deployment/patch management.