Senior Systems Administrator

Job Description:

Are you passionate about solving complex technical challenges in support of national security Leidos is seeking a Senior Systems Administrator to join our high-performing team on the Chinook Program supporting our Intelligence Community this mission-critical role youll be at the forefront of maintaining and enhancing the application ensuring the reliability security and performance of systems that directly enable intelligence operations.

As a trusted technical expert youll work alongside talented engineers cybersecurity professionals and customer stakeholders to deliver innovative solutions optimize enterprise infrastructure and keep mission-essential capabilities operating at peak performance. If you thrive in a fast-paced collaborative environment where your expertise has a tangible impact this is an opportunity to contribute to work that truly matters.

Position is performed at the customer site in St. Louis MO.

Clearance Level Required:

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.

Primary Responsibilities:

• Administer maintain and support the application with the customer enterprise.
• Perform installation configuration patching upgrades and lifecycle management of Windows and Linux servers.
• Monitor system health performance and availability using enterprise monitoring tools.
• Troubleshoot complex hardware software operating system and application issues.
• Support deployment activities across development test staging and production environments.
• Coordinate scheduled maintenance windows and execute system upgrades with minimal operational impact.
• Develop and maintain automation scripts using PowerShell Bash or Python to improve operational efficiency.
• Perform backup recovery and disaster recovery operations.
• Support accreditation activities and ensure compliance with customer DoD RMF DISA STIG and security requirements.
• Manage user accounts permissions and Active Directory integrations.
• Collaborate with security teams to remediate vulnerabilities and maintain compliance.
• Support incident response root cause analysis and corrective action implementation.
• Document system configurations standard operating procedures and technical documentation.
• Participate in on-call rotation and provide after-hour support when required.
• Interface directly with customer to address operational tasking and mission requirements.

Basic Qualifications:

• US citizenship is required per contract.
• Bachelors degree in Information Technology Computer Science Engineering or related field and 8-12 years of prior relevant experience or Masters with 6-10 years of prior relevant experience.
• 8 years of enterprise systems administration experience.
• Experience supporting mission-critical DoD or Intelligence Community environments.
• Strong administration experience with:
  • Microsoft Windows Server
  • Red Hat Enterprise Linux (RHEL)
  • VMware vSphere
  • Active Directory
  • DNS/DHCP
  • Group Policy
• Experience with scripting and automation using PowerShell Bash or Python.
• Experience implementing and maintaining STIG compliance.
• Knowledge of RMF security controls and vulnerability remediation.
• Strong troubleshooting and analytical skills.
• Must have a Security CE or higher DoD 8570/8140 certification

Preferred Qualifications:

• Experience supporting customer mission systems.
• Experience supporting GEOINT applications.
• Experience with:
  • Ansible
  • VMware vCenter
  • SCCM/MECM
  • Splunk
  • Elastic Stack
  • Git
  • ServiceNow
• Red Hat Certified Systems Administrator (RHCSA)
• Microsoft Certified: Windows Server Hybrid Administrator Associate
• ITIL Foundation Certification

#Chinook

#NSBA

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

Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline onlyand 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.