Seeking an experienced Solaris/Oracle Systems Administrator to join our SITE III Directorate Operations (DO) team supporting the U.S. Intelligence Community. This role focuses on managing complex enterprise environments built on Oracle Solaris infrastructure in support of mission-critical systems that deliver strategic advantage to warfighters, defense planners, and policymakers.

As part of the broader SITE III contract, this position will contribute to the sustainment and enhancement of mission applications that enable global operations. You’ll be part of a high-performing team with a long history of excellence supporting national defense and intelligence programs.

In this role, you will be responsible for maintaining, configuring, and supporting Oracle Solaris-based infrastructure and hardware across a secure enterprise environment. Responsibilities include:

• Administering Oracle Solaris (versions 10, 11.2, 11.3, 11.4) systems

• Managing Sun/Oracle SPARC and x86 hardware, switches, and storage

• Configuring and maintaining Sun/Oracle switches

• Building and managing IPS repositories and LDOMs (Logical Domains)

• Performing disk management, including physical, ZFS, and virtual disks under LDOM

• Executing backup and recovery operations, including ZFS snapshots, BE Admin, and LDOM exports

• Managing Solaris antivirus and IPF (Internet Protocol Filter) configurations

• Administering and configuring Trusted Solaris environments

• Performing disaster recovery and recovering systems from hardware failures

• Supporting overall Solaris system performance, security hardening, and patching

Required Clearance: Must possess an active TS/SCI with polygraph OR have SCI eligibility and able to obtain a polygraph. This requires US Citizenship.

Required Skills, Education, and Experience:

• A Bachelor’s degree in an area applicable to the position with 8+ years of relevant experience OR a Master’s degree with 6 years of relevant experience; an additional 4 years of experience maybe considered in lieu of a degree requirement

• Security+ or other IAT II/III level certification that is currently active (DoD 8570 compliance)

• Extensive experience with Sun/Oracle hardware, including SPARC and x86 servers, switches, and storage

• Strong knowledge of Solaris OS, specifically versions 10, 11.2, 11.3, and 11.4

Proven expertise in the following:

o Sun/Oracle switch configuration

o Building and managing LDOMs

o Managing IPS repositories

o ZFS and disk management (physical and virtual)

o Backup and recovery, including ZFS snapshots, BE Admin, and LDOM exports

o Trusted Solaris configuration and management

o Solaris antivirus and IPF configuration

Desired Qualifications:

• Experience with Windows Active Directory for user, group, and device management

• Knowledge of PBIS (Power Broker Identity Services) for Solaris AD integration

• Familiarity with Nutanix VM management

• Exposure to Oracle Linux, Red Hat Enterprise Linux (RHEL), and CentOS

• Experience with Oracle Database, including RAC (Real Application Clusters), ASM (Automatic Storage Management), and RMAN (Recovery Manager) for backups and recovery.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

February 23, 2026

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.

Pay Range:

Pay Range $92,300.00 - $166,850.00

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.