Linux Systems Engineer

Leidos is seeking an experienced Linux Systems Engineer to provide support to a mission critical enterprise identity and access management system. A successful candidate will develop an understanding of the services offered to external organizations, provide lifecycle systems engineering support to development and operations on the program, and use a combination of technical and functional expertise to recommend solutions to satisfy customer requirements.   

Responsibilities: 

• Provide support to Tier II personnel in resolving customer-facing issues. 

• Perform root cause analysis (RCA) and mitigation for operational issues. Communicate findings with interested parties and establish a feedback loop to development. 

• Work as a subject matter expert (SME) to review user metrics, system health, overall performance checkouts, and implement proactive measures to support operational availability. 

• Develop scripts to accomplish operational tasks, and utilize playbook-based automation processes, as necessary. 

• Manage Commercial-Off-The-Shelf (COTS) and Government-Off-The-Shelf (GOTS) software products in several environments. 

• Work with Enterprise Services to ensure compliance with security services and applications. 

• Interface with customers and outside technical teams to diagnose and mitigate access issues. 

• Utilize abstract visualization skills to understand system workflows and identify bottlenecks. 

Requirements/Qualifications: 

• Bachelor’s Degree in Computer Science or related discipline plus 4-6 years of professional experience as a Systems Administrator or similar technical role. 

• Proactive self-starter demonstrating a positive, willing attitude and excellent oral and written communication skills. 

• Two or more years of experience with Amazon Web Services (S3 Buckets, EC2, Reserved Instances, etc.) 

• Experience troubleshooting network-related issues (Open Systems Interconnection (OSI) model levels 4-7) 

• Familiar with System Engineering documentation creation (network diagrams, data flows, etc.) 

• Experience working with Agile Team Collaboration tools such as (Jira, Confluence, BitBucket) 

• Strong Linux background and familiarity with best practices of infrastructure management 
• Active Top Secret clearance with SCI eligibility. Willingness to be approved for a Top Secret/SCI CI Poly after hire

Preferred Qualifications: 

• Familiarity with Identity Federation, Single Sign-On, and authorization technologies (e.g. smart cards/Common Access Cards (CACs), SAML, OIDC, OAuth, Kerberos) 

• Experience with Oracle COTS product experience (Oracle Access Manager, Oracle Unified Directory, Oracle Weblogic, etc.) 

• Experience with Kubernetes 

• Experience with scripting languages, such as bash and python 

• Experience with LDAP (in lieu of Oracle Unified Directory experience) 

• Experience with ElasticSearch, Logstash, Kibana (ELK tools 

• Experience with AWS and other cloud-based architectures 

• Familiar with cross domain architectures at various levels 

• Experience with automated testing and monitoring 

• Experience with Engineering Review Boards and Change Management 

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:

October 14, 2026

Pay Range:

Pay Range $65,650.00 - $118,675.00

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.