What are the responsibilities and job description for the Linux System Administrator position at Sira Consulting, an Inc 5000 company?
Job Title: Linux with DevOps Scripting
Location: Alpharetta, GA (Onsite)
Contract Role & Osnite
We are seeking an experienced Linux Administrator with strong expertise in Red Hat Enterprise Linux (RHEL) to join our IT infrastructure team. The ideal candidate will have hands-on experience with hardware and operating system troubleshooting, with scripting abilities and familiarity with DevOps and cloud technologies being valuable assets.
Key Responsibilities
- Administer, maintain, and optimize Red Hat Enterprise Linux (RHEL) servers across development, testing, and production environments
- Perform hardware diagnostics, troubleshooting, and resolution for physical and virtual servers
- Monitor system performance, identify bottlenecks, and implement performance tuning solutions
- Manage system patches, updates, and security configurations in compliance with organizational standards
- Troubleshoot complex OS-level issues including kernel panics, file system corruption, and network connectivity problems
- Configure and maintain system services, daemons, and application stacks (Apache, Nginx, databases, etc.)
- Implement and maintain backup and disaster recovery procedures
- Manage user accounts, permissions, and security policies using PAM, SELinux, and firewall configurations
- Document system configurations, procedures, and troubleshooting guides
- Collaborate with development and DevOps teams to support application deployments and infrastructure automation
Required Qualifications
Technical Skills
- 3-5 years of hands-on experience administering Red Hat Enterprise Linux (RHEL 7/8/9) or CentOS environments
- Strong knowledge of Linux system architecture, boot process, and kernel management
- Expertise in hardware troubleshooting including servers, storage arrays, and network equipment
- Proficiency with system diagnostics tools and methodologies for root cause analysis
- Experience with package management (RPM, YUM, DNF) and repository configuration
- Solid understanding of networking concepts (TCP/IP, DNS, DHCP, routing, VLANs)
- Knowledge of storage technologies including LVM, RAID configurations, and file systems (ext4, XFS)
- Experience with virtualization platforms (KVM, VMware, or similar)
- Strong problem-solving skills and ability to work under pressure during outages
Good to Have
- Scripting experience in Bash, Python, or Perl for automation and system administration tasks
- Familiarity with configuration management tools (Ansible, Puppet, Chef)
- Awareness of DevOps principles and practices
- Experience with cloud platforms (AWS, Azure, Google Cloud) and cloud-based Linux instances
- Knowledge of containerization technologies (Docker, Podman, Kubernetes)
- Understanding of CI/CD pipelines and tools (Jenkins, GitLab CI, GitHub Actions)
- Exposure to infrastructure as code (Terraform, CloudFormation)
- Experience with monitoring and logging tools (Nagios, Prometheus, Grafana, ELK stack)
- Knowledge of version control systems (Git)
Certifications (Preferred)
- Red Hat Certified System Administrator (RHCSA)
- Red Hat Certified Engineer (RHCE)
- CompTIA Linux or similar certifications