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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Linux System Administrator - **Company:** Tista Science and Technology Corporation - **Location:** Austin, TX, United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Secure Shell (SSH), Amazon Web Services, Microsoft Azure, Backup Devices, Bash Shell, Cloud Computing, Data Centers, Dynamic Host Configuration Protocol, Linux, Disaster Recovery, File Systems, Domain Name System (DNS), Monitoring of Systems, Intrusion Detection and Prevention, Virtual Private Networks (VPN), Python (Programming Language), Linux System Administration, Nagios, Network File Systems, Performance Tuning, Red Hat Enterprise Linux, Ansible, Prometheus, Solaris (Operating System), Virtualization Technology, Software Vulnerability Management, Zabbix, Virtual Environment, HybridCloud, Firewalls (Computer Science), Selinux, Information Technology, Deployment Automation, Patch Management, CIS Benchmarks, Puppet, User Accounts - **Published:** July 7, 2026 - **Apply:** https://www.juju.com/job/00000000gejebi ## About the Role + 5+ years of advanced Linux system administration experience. + Expertise managing enterprise Linux environments. + Experience with virtualization and cloud platforms. + Strong scripting and automation skills. + Participation in on-call rotation and maintenance windows may be required. + Work may be performed in data center, cloud, and secure environments. Core Competencies: + Enterprise Linux administration. + Automation & Infrastructure as Code. + Security & compliance best practices. + Cloud and virtualization technologies. + Advanced troubleshooting & performance tuning. + Documentation & operational excellence. Preferred Certifications: + Red Hat Certified Engineer (RHCE). + Linux Foundation certifications (LFCS/LFCE). + AWS or Azure cloud certifications. Education: + Bachelor's degree in computer science, electronics engineering or related technical discipline and 5+ years' work experience. + Eight (8) years of additional relevant experience may be substituted for education (13 years total). Clearance: + The ability to pass a Tier 4/HIGH Background Investigation. ## Description + Install, configure, maintain, and troubleshoot enterprise Linux systems including Red Hat Enterprise Linux and Solaris. + Manage user accounts, permissions, and authentication services. + Perform patch management, upgrades, and lifecycle planning. + Maintain storage, file systems, backups, and recovery procedures. + Administer virtual environments. + Support hybrid cloud infrastructure in Amazon Web Services and Microsoft Azure. + Maintain core network services (DNS, DHCP, NFS, SSH, VPN). + Develop scripts using Bash, Python, or similar languages. + Implement automation using Ansible and Puppet. + Automate provisioning, patching, compliance checks, and deployments. + Implement system hardening, access controls, and security best practices. + Manage firewalls, SELinux, and intrusion detection measures. + Monitor logs and perform vulnerability remediation. + Support compliance requirements such as CIS benchmarks, NIST, or HIPAA (if applicable). + Implement system monitoring using Nagios, Zabbix, or Prometheus. + Analyze performance metrics and optimize system resources. + Perform root cause analysis and implement preventative solutions. ## Related Videos - [Hacking MSSQL on Cloud. 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