Linux System Administrator

Sci Tec, Inc. is a dynamic small business with the mission to deliver advanced sensor data processing technologies and scientific instrumentation capabilities in support of National Security and Defense. We support customers throughout the Department of Defense and U.S. Government in building innovative new tools to deliver unique, world-class data exploitation capabilities.

Important Notice: Sci Tec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered.

Sci Tec has an immediate opportunity for a talented engineer to support our programs delivering Next-Generation Missile Warning software. This is a unique opportunity to join a small business delivering core capabilities for National defense. You will work within a fast-paced team delivering end-to-end software processing of Overhead Persistent Infra Red (OPIR) sensor data for Missile Warning, Missile Defense, Battlespace Awareness, and Technical Intelligence.

We are seeking a skilled Linux System Administrator to support the installation, configuration, security, and ongoing operation of Linux- and Windows-based systems in a secure, mission-focused environment. The ideal candidate is hands-on, detail-oriented, and comfortable working across infrastructure, security, and operations teams.

• Install, configure, and maintain Red Hat Enterprise Linux (RHEL) and Windows workstations and servers in accordance with defined baselines
• Implement and maintain system security, hardening, integrity monitoring, backups, and auditing
• Perform patch and package management, including installation and maintenance of third-party software
• Monitor system performance, availability, and health; troubleshoot and resolve hardware and software issues
• Support and maintain virtualized environments (e.g., VMware)
• Install, configure, and troubleshoot servers, switches, and storage systems
• Configure and support networking in mixed Linux and Windows environments
• Apply DISA STIGs and support compliance activities using tools such as SCAP
• Document system configurations, procedures, and changes in accordance with policies and requirements
• Collaborate effectively with team members, security personnel, and end users
• Provide technical support and respond to operational issues through resolution
• Participate in continuous improvement, automation, and modernization efforts
• Perform other duties as assigned

• 3+ years of professional experience administering Red Hat Enterprise Linux (RHEL) and Microsoft systems

• Experience in:
• Installation and configuration of servers and workstations
• System security, hardening, auditing, and backup strategies
• Patch and package management
• Virtualization technologies
• Hardware and software troubleshooting
• Networking in heterogeneous (Linux/Windows) environments
• Strong oral and written communication skills
• Detail oriented
• Proven ability to work collaboratively in a team environment
• Self-motivated, detail-oriented, and able to own issues through resolution
• Ability to obtain and maintain a Secret security clearance

Candidates who have any of the following skills will be preferred:

• Bachelor’s degree in Information Technology, Network Engineering, Computer Engineering, or a related technical field
• Experience with:
• Dell servers, switches, and SAN solutions
• VMware vSphere and vCenter
• DISA SCAP Compliance Checker and DISA STIG implementation
• RHEL 7/8/9
• Amazon Web Services (AWS)
• NAS and/or SAN configuration and maintenance
• Automation and scripting (Bash, Python, Perl, Power Shell)
• Configuration management tools (Ansible or similar)
• Git/Git Lab and CI/CD pipelines
• Containers and orchestration (Docker, Kubernetes)
• Database maintenance or basic web application support
• Relevant certifications such as:
• Security+
• RHCSA / RHCE
• Microsoft certifications

* Resumes, Cover Letters, and Applications which are generated by AI will not be considered for employment.

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