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Linux Systems Administrator

Job Description

Position Summary:
The successful candidate will be part of a team responsible for maintaining and troubleshooting end to end computer processing systems, integrating new systems, and participating in general facilities maintenance activities on site. Additionally, as the enterprise matures, the candidate will participate in design and implementation of new capabilities to monitor, maintain, and support the mission such as Change/Baseline Management processes and tools, Health and Status monitoring and reporting, and contributing to the evolution of the enterprise. As part of the team, the Security Administrator may be required to learn and occasionally contribute on a variety of tasks outside of the typical Information Assurance scope such as inventory, shipping and handling, and other administrative tasks.

Duties and Responsibilities:

  • Provide Operations and Maintenance support for multiple scientific/engineering/DSP systems
  • Provide Development support for commercial and custom hardware and software
  • Investigate and perform performance tuning, resource optimization, and system upgrades
  • Perform security-oriented system configuration and monitoring to improve / maintain security posture
  • Implement security-driven tasks that meet emerging requirements
  • Consistently harden and evaluate servers, workstations, and appliances for multiple platforms
  • Maintain and contribute documentation in the CM/Knowledge Base
  • Responsibilities occasionally require working evenings or weekends

Required Qualifications:

  • B.S. degree or equivalent and 5 to 7 years of related experience
  • Degree in computer science, computer engineering, or similar
  • Working knowledge of Linux administration and troubleshooting
  • Comfortable with at least one Linux-oriented scripting language (bash, python, perl, etc)
  • Comfortable with modern Configuration Management and Baseline Management practices
  • Experience with network security and architecture principles
  • Familiarity with typical computer security tools and standards (SSH, SSL, PKI/x509, etc)
  • Experience managing and applying security patches to ensure compliance with dynamic requirements
  • TS/SCI clearance

Desired Qualifications:

  • Background in Operations & Maintenance
  • Experience applying security principles and best practices to new and existing Red Hat Enterprise Linux systems
  • Familiarity with modern configuration/orchestration tools (Puppet, Ansible, Chef, etc)
  • Familiarity with common virtualization technologies
  • Experience with common Cisco network equipment
  • Strong documentation skills
  • Thorough knowledge of security requirements for classified environments


Normal demands associated with an office environment. Ability to work on computer for long periods, and communicate with individuals by telephone, email and face to face. Some travel may be required.

What We Can Offer You:

- We’ve been named a Best Place to Work by the Washington Post.

- Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives.

- We offer competitive benefits and learning and development opportunities.

- We are mission-oriented and ever vigilant in aligning our solutions with the nation’s highest priorities.

- For over 55 years, the principles of CACI’s unique, character-based culture have been the driving force behind our success.


Job Location



CACI employs a diverse range of talent to create an environment that fuels innovation and fosters continuous improvement and success. At CACI, you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. CACI is proud to provide dynamic careers for employees worldwide. CACI is an Equal Opportunity Employer - Females/Minorities/Protected Veterans/Individuals with Disabilities.

Company Name:
Security Clearance:
Top Secret / SCI + Poly
Sarasota, Florida
United States
Not Specified
Job Number:

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