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Unix System Administrator
Job in
Jacksonville, Duval County, Florida, 32290, USA
Listed on 2026-10-16
Listing for:
Sira Consulting, an Inc 5000 company
Full Time
position Listed on 2026-10-16
Job specializations:
-
IT/Tech
Unix/Linux, Systems Administrator, Cloud Computing: Infrastructure & Operations, Disaster Recovery IT
Job Description & How to Apply Below
We are seeking a skilled Unix Administrator to install, configure, maintain, and support Unix/Linux server environments. The ideal candidate will be responsible for ensuring system availability, performance, security, and reliability while providing operational support for business-critical applications.
Key Responsibilities- Install, configure, and maintain Linux/Unix operating systems (RHEL, CentOS, Ubuntu, SUSE, AIX, Solaris).
- Perform server administration, patching, upgrades, and troubleshooting.
- Monitor system performance, availability, and capacity planning.
- Manage user accounts, permissions, file systems, and security policies.
- Configure and maintain DNS, NFS, FTP, SSH, LDAP, and other infrastructure services.
- Implement backup, recovery, and disaster recovery procedures.
- Automate administrative tasks using Shell scripting (Bash, Korn Shell, Python).
- Manage storage, LVM, RAID, and server virtualization platforms.
- Troubleshoot hardware, OS, network, and application-related issues.
- Support production, development, and testing environments.
- Perform vulnerability remediation and security hardening.
- Prepare system documentation, SOPs, and operational reports.
- Work closely with application, database, network, and cloud teams.
- Strong knowledge of Linux/Unix Administration.
- Experience with RHEL, CentOS, Ubuntu, SUSE, AIX, or Solaris.
- Hands-on experience in Shell scripting (Bash/KSH).
- Knowledge of server performance tuning and troubleshooting.
- Experience with backup tools and disaster recovery.
- Familiarity with networking concepts (TCP/IP, DNS, DHCP, NTP).
- Experience with monitoring tools such as Nagios, Zabbix, Splunk, Prometheus, or Grafana.
- Knowledge of security hardening and compliance standards.
- Experience with virtualization technologies (VMware, Hyper-V, KVM).
- Basic understanding of cloud platforms (AWS, Azure, GCP).
- Automation using Ansible, Puppet, Chef, or Terraform.
- Knowledge of Docker and Kubernetes.
- Experience with Dev Ops and CI/CD tools.
- Linux certifications such as RHCSA, RHCE, or LPIC.
- Bachelor's degree in computer science, Information Technology, or related field.
- 8+ years of experience in Unix and Linux Administration.
- Relevant certifications are preferred.
- Strong troubleshooting and analytical skills.
- Excellent communication and teamwork.
- Ability to work in a 24x7 support environment.
- Ability to handle critical incidents and escalations.
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