Linux System Engineer – TS/SCI Eligible

TENICA; Chantilly (VA); On-site; USD 117,000 - 130,000; Full time

Benefits offered by this job

Equal opportunity employer

Job summary

TENICA is seeking a Linux System Engineer in Chantilly, VA to support mission-critical Linux enterprise infrastructure and IAM environments. You will participate in the full systems engineering lifecycle across requirements, integration, and operations, while developing automation and playbooks to improve efficiency.

Active Top Secret clearance with SCI eligibility and willingness to obtain a CI Polygraph are required; candidates should have AWS experience and strong Linux troubleshooting skills

Qualifications

• Bachelor's degree in a technical field with 4–6 years of experience.
• Strong Linux systems engineering or administration experience in enterprise environments.
• 2+ years of AWS experience (EC2, S3).
• Experience troubleshooting network issues (OSI layers 4–7).
• Knowledge of lifecycle processes, documentation, and enterprise infrastructure management.
• Experience creating architecture diagrams, workflows, and data-flow docs.
• Familiar with Jira, Confluence, and Bitbucket in Agile environments.
• Understanding of Linux infrastructure management, monitoring, and troubleshooting best practices.
• Strong analytical, problem-solving, and technical communication skills.
• Active Top Secret clearance with SCI eligibility and CI Polygraph willingness.
• Current CompTIA Security+ certification.

Responsibilities

• Provide systems engineering and support for Linux enterprise infrastructure and IAM environments.
• Handle full lifecycle: requirements analysis, development, integration, operations, maintenance, improvements.
• Offer advanced assistance to Tier II for complex issues.
• Conduct root cause analysis and coordinate corrective actions with teams.
• Monitor system health, metrics, performance, and availability; implement improvements.
• Develop scripts, automation procedures, and playbooks to improve efficiency.
• Manage COTS/GOTS software across enterprise environments.
• Ensure compliance with cybersecurity and operational requirements in collaboration with providers.
• Troubleshoot connectivity, authentication, authorization, and access issues.
• Develop and maintain system architecture diagrams and data flows.

Skills

Linux systems engineering

AWS (EC2, S3)

Network troubleshooting OSI 4–7

Lifecycle processes & docs

Architecture diagrams & data flows

Agile tools (Jira, Confluence, Bitbuck

Linux monitoring & troubleshooting

Analytical & technical communication

CompTIA Security+

Active TS/SCI with SCI eligibility

Polygraph willingness

Education

Bachelor's degree in Computer Science/IT/Engineering or related

Tools

Jira

Confluence

Bitbucket

ELK stack

Kubernetes

Oracle WebLogic

Job description

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process.

Linux System Engineer – TS/SCI Eligible

Chantilly, VA, US

2 days ago Requisition ID: 1117

Salary Range: $117,000.00 To $130,000.00 Annually

Linux System Engineer – TS/SCI Eligible

Department: Government Customer – Chantilly
Location: Chantilly, VA

ACTIVE TOP SECRET CLEARANCE REQUIRED. MUST BE ELIGIBLE FOR SCI ACCESS AND WILLING TO OBTAIN A CI POLYGRAPH.

Job Responsibilities

Provide systems engineering and technical support for mission-critical Linux enterprise infrastructure and identity and access management environments.

Support the full systems engineering lifecycle, including requirements analysis, development, integration, operations, maintenance, and continuous improvement.

Provide advanced technical assistance to Tier II support personnel in diagnosing and resolving customer-facing system issues.

Perform root cause analysis of operational incidents, recommend mitigation strategies, and coordinate corrective actions with engineering and development teams.

Monitor system health, user metrics, operational performance, and availability to identify potential issues and implement proactive improvements.

Develop Linux scripts, automation procedures, and playbooks to streamline operational tasks and improve infrastructure efficiency.

Manage and support Commercial-Off-The-Shelf (COTS) and Government-Off-The-Shelf (GOTS) software products across multiple enterprise environments.

Collaborate with enterprise service providers to ensure systems comply with applicable cybersecurity and operational requirements.

Troubleshoot network connectivity, authentication, authorization, and application access issues across interconnected systems.

Evaluate system workflows, identify performance bottlenecks, and recommend technical improvements.

Support cloud infrastructure, system integration, and enterprise service modernization activities.

Develop and maintain system architecture diagrams, data flows, technical documentation, and operational procedures.

Coordinate with customers, software developers, systems administrators, and government stakeholders to resolve technical challenges and support mission requirements.

Required Qualifications

Bachelor's degree in Computer Science, Information Technology, Engineering, or a related technical discipline with 4–6 years of relevant professional experience.

Strong Linux systems engineering or administration experience in enterprise environments.

Minimum of two years of experience supporting Amazon Web Services (AWS), including services such as EC2 and S3.

Experience troubleshooting network-related issues, including Open Systems Interconnection (OSI) model Layers 4–7.

Knowledge of system engineering lifecycle processes, technical documentation, and enterprise infrastructure management.

Experience developing or maintaining technical architecture diagrams, system workflows, and data flow documentation.

Familiarity with Agile collaboration tools such as Jira, Confluence, and Bitbucket.

Understanding of Linux infrastructure management, system monitoring, and troubleshooting best practices.

Strong analytical, problem-solving, and technical communication skills.

Current CompTIA Security+ certification before starting.

Active Top Secret clearance with eligibility for SCI access and willingness to obtain a polygraph.

Desired Qualifications

Active TS/SCI clearance with CI Polygraph.

Experience supporting Department of Defense (DoD), Intelligence Community (IC), or other federal government systems.

Familiarity with Identity Federation, Single Sign-On (SSO), and authorization technologies, including SAML, OIDC, OAuth, Kerberos, and Common Access Cards (CACs).

Experience with Oracle Access Manager, Oracle Unified Directory, Oracle WebLogic, or comparable enterprise software solutions.

Knowledge of Kubernetes and container-based infrastructure.

Experience developing automation scripts using Bash, Python, or similar scripting languages.

Familiarity with LDAP and enterprise directory services.

Experience using Elasticsearch, Logstash, Kibana (ELK), or comparable monitoring and logging solutions.

Knowledge of AWS and other enterprise cloud architectures.

Experience with automated testing, monitoring, and system performance optimization.

Familiarity with Engineering Review Boards, configuration management, and change management processes.

TENICA is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.