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    Infographic showing various Networking job openings at Scitec in the United States as of September 2026, with employment types broken down into 8% Internship, 89% Full Time, and 3% Contract. Highlights an 93% Physical, and 7% Remote job distribution.

    Senior Staff Linux System Administrator

    Boulder, CO • On-site

    SciTec
    Guided Missile and Space Vehicle Manufacturing • 51 - 200 employees
    Learn more about SciTecexternal

    Full-time

    Medical, Dental, Vision, Life, Retirement, PTO

    Re-posted 12 days ago

    Job description

    SciTec, a wholly owned subsidiary of Firefly Aerospace, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions.
    Important Notice: SciTec 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.
    SciTec 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 business delivering core capabilities for National defense. You will work within a fast-paced team delivering end-to-end software processing of Overhead Persistent InfraRed (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.
    Responsibilities
    • Install, configure, and maintain Red Hat Enterprise Linux (RHEL) workstations and servers in accordance with defined baselines
    • Implement and maintain system security, hardening, integrity monitoring, backups, and auditing i.e. STIG, SCAP
    • Perform patch and package management, including installation and maintenance of third-party software i.e. IDEs, Pypi, Docker registry,
    • Monitor system performance, availability, and health; troubleshoot and resolve hardware and software issues,
    • Support and maintain virtualized and workstation environments (e.g., VMware)
    • Install, configure, and troubleshoot servers, switches, and storage systems
    • Configure and support networking in mixed Linux and Windows environments
    • 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

    Requirements
    • 4-6 years of professional experience administering Linux systems (RHEL preferred)
    • Experience with:
      • Installation and configuration of RHEL 8 servers and workstations
      • System security, hardening (STIG), auditing, and backup strategies
      • Patch and package management
      • Virtualization technologies including VMware, Podman, Docker, Image registries, Red Hat Openshift/Kubernetes
      • 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 completion
    • 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
      • Root Cause Analysis and documenting findings
      • DISA SCAP Compliance Checker and DISA STIG implementation
      • RHEL 8/9/10
      • NAS and/or SAN configuration and maintenance
      • Configuration management, Automation, Scripting (Ansible, Bash, Python)
      • Git/GitLab and CI/CD pipelines
      • Containers and orchestration (Podman/Docker, RHOCP/Kubernetes, minikube, image registries)
    • Relevant certifications are preferred but not required i.e.
      • Security+
      • RHCSA / RHCE / LPIC-1

    *Resumes, Cover Letters, and Applications which are generated by AI will not be considered for employment.
    Colorado Residents: In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information
    Benefits
    SciTec offers a highly competitive salary and benefits package, including:
    • 4% Safe Harbor 401(k) match
    • 100% company paid HSA Medical insurance, with a choice of 2 buy-up options
    • 80% company paid Dental insurance
    • 100% company paid Vision insurance
    • 100% company paid Life insurance
    • 100% company paid Long-term Disability insurance
    • Short-term Disability insurance
    • Annual Profit-Sharing Plan
    • Discretionary Performance Bonus
    • Paid Parental Leave
    • Generous Paid Time Off, including Holiday, Vacation, and Sick Pay
    • Flexible work hours

    The pay range for this position is $120,000 - $146,000 / year. SciTec considers several factors when extending an offer of employment, including but not limited to the role and associated responsibilities, a candidate's work experience, education/training, and key skills. This is not a guarantee of compensation.
    SciTec is proud to be an Equal Opportunity employer. VET/Disabled.
    SciTec logo

    About SciTec

    Sourced by ZipRecruiter

    Industry

    Guided missile and space vehicle manufacturing

    Company size

    51 - 200 Employees

    Headquarters location

    Princeton, NJ, US

    Year founded

    1979

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