Expert Systems Administrator

Leidos is seeking a System Administrator for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. The System Administrator will work with a large team of developers, software engineers, and data engineers in order to design, develop, implement, and maintain a Cloud-Native Service Architecture that Software Development teams will leverage to use cloud capabilities. The successful candidate will support continuity of our customer’s mission by helping to modernize and implement industry standards while ensuring secure, reliable, and uninterrupted availability of IT systems. This role works directly with implementation teams to provide technical guidance and implementation priorities related to cloud implementation. This role requires supporting an on-call rotation to ensure mission critical services remain operational 24/7/365. Rotation is typically to be on-call 1 full calendar week every 2 months. 

Primary Responsibilities:

• This Role provides technical guidance and delivers an innovative product, service for a combination of products and services that address a customer’s specific requirements.
• Supports the development of enterprise software solutions with AWS.
• Duties include developing innovative approaches and solutions, using non-quantitative tools and guidelines from past experience
• Security Patching
• Support of Servers in an AWS environment
• Provides execution guidance and practical engineering support for mission teams
• Ensures that mission critical applications remain operation 24/7
• Supports a COTS service that provides attribute data via an LDAP interface to hundreds of various Sponsor systems
• Strong communication, design, and documentation skills
• Strong time and workflow management skills
• Work within the parameters of Agile & Scrum methodologies

Required Quals:

• Active TS/SCI with Polygraph
• BS degree and 12+ years' experience. Additional experience in lieu of degree.
• Must be an Expert in using Linux-based operating systems with strong experience working in Command Line (Bash)
• Must have experience with security accreditation process
• Must have experience with the Cloud / Amazon Web Services
• Experience in Cloud Technologies and infrastructure -as-code concepts in an automated fashion
• Understanding of aspects of architect and design enterprise cloud solutions and AWS
• Must be able to support System Administration/Privileged Access duties including an on-call rotation for a week approximately every two months
• Experience with Elastic tools (Elasticsearch, Logstash, Kibana, and Beats)
• Must be detailed oriented and have excellent oral and written communications skills
• Experience interacting with cross functional project teams including Software Development, System Engineering/ Verification and Validation, Security, Compliance and Quality Assurance
• Must have experience working in Agile environments
• Experience working with DevOps CI/CD related technologies (Github, Jenkins, Puppet, Docker, Rundeck, etc.)
• Ability to read and perform complex software and infrastructure deployment instructions

Desired Quals:

• Experience with LDAP Technologies
• Minimum of one AWS Certification from the AWS Associate level (AWS Certified Architect Associate, AWS Certified Developer Associate, or AWS Certified SysOps Administrator Associate)
• 3+ years of C2S experience
• Experience with Cloud Formation, Tomcat, NGINX
• Understanding and knowledge with Identity and Accessibility development practices IAM / IdAM / ICAM delivery systems, Authentication, Authorization, and/or Attributes
• Experience with containerization implementations
• Familiarity with Ansible, Javascript, and SQL

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:

January 14, 2026

Pay Range:

Pay Range $116,350.00 - $210,325.00

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.