Sr. Systems Administrator (Unix/Linux) - Navy - Top Secret/SCI Required
cFocus Softwareorporated
Full-time
Remote
Administrative
cFocus Software seeks a Sr. Systems Administrator (Unix/Linux) to join our program supporting the Department of Defense (DoD). This position is remote. This position requires the ability to obtain a Top Secret/SCI clearance.
Qualifications:
Qualifications:
- Six (6) years of professional experience in Unix and/or Linux system administration of networks and software systems.
- Experience in system backup and recovery; basic software management; security management and library management; installation and configuration of hardware; operational systems and COTS software; operating computer systems in different operating environments; and sizing, performance, tuning, hardware/software/network trouble shooting and resource allocation.
- Qualified experience in different network protocols including TCP/IP and major network security tools such as: firewalls, knowledge of computing and networking vulnerabilities, attach methods and latest detection methods.
- Active DoD IAT Level III certification
- Administer, maintain, and optimize Unix/Linux servers to ensure high availability and performance.
- Perform system installations, upgrades, and patches in accordance with approved change control procedures.
- Monitor system performance and capacity, identifying and resolving technical issues proactively.
- Manage and maintain user accounts, permissions, and access controls in compliance with DoD security policies.
- Implement and monitor system backups, disaster recovery, and business continuity processes.
- Develop and maintain system documentation, standard operating procedures (SOPs), and configuration baselines.
- Support integration of Unix/Linux systems with other enterprise platforms and applications.
- Troubleshoot and resolve complex system and network issues, escalating as necessary to engineering teams.
- Collaborate with cybersecurity personnel to ensure systems meet compliance requirements such as STIGs and RMF controls.
- Assist with vulnerability scanning, patch validation, and remediation efforts to maintain system security posture.
- Participate in system audits, inspections, and accreditation activities as required by the PWS.
- Provide Tier III support and mentorship to junior administrators and technical support personnel.
- Perform system monitoring and generate operational reports on uptime, capacity, and incident metrics.
- Support automation efforts using scripting languages (e.g., Bash, Python, Ansible) to streamline administrative tasks.
- Participate in after-hours maintenance windows and on-call rotations to support mission-critical systems.