Linux System Engineer

Leidos; Chantilly (VA); On-site; USD 66,000 - 119,000; Full time

Job summary

Leidos is seeking an experienced Linux Systems Engineer to support a mission-critical identity and access management system in a demanding environment.

You will provide lifecycle systems engineering support, develop automation scripts, and collaborate with development, operations, and enterprise security teams to meet customer requirements while maintaining system integrity.

Qualifications

• Bachelor's degree in Computer Science or related discipline and 4–6 years of professional experience in systems administration or similar role.
• Proactive self-starter with strong oral and written communication skills.
• Experience with AWS services (S3, EC2, Reserved Instances) and cloud architectures.
• Experience troubleshooting network issues across OSI layers 4–7.
• Familiarity with system engineering documentation and diagrams.
• Experience with Jira, Confluence, Bitbucket and agile teamwork.

Responsibilities

• Provide Tier II support to resolve customer-facing issues.
• Perform RCA and mitigation for operational issues and feed findings back to development.
• Act as SME to review metrics, system health, and performance, and implement proactive measures.
• Develop scripts and use playbook-based automation for tasks.
• Manage COTS/GOTS software in multiple environments and ensure security/compliance alignment.
• Interface with customers and external teams to diagnose access issues and optimize workflows.

Skills

Linux administration

Root cause analysis

Customer communication

Security awareness

Automation scripting

Cloud familiarity

Education

Bachelor's Degree in Computer Science or related discipline

Tools

AWS

Jira

Confluence

Bitbucket

Kubernetes

ELK Stack

Oracle Access Manager

Oracle Unified Directory

Oracle WebLogic

Python

Bash

Job description

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:

• Bachelors 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

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 $65,650.00 - $118,675.00

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.