Senior Linux Systems Administrator - Automation & Security

Ethereum Technologies; Wilmington (DE); On-site; USD 80,000 - 120,000; Full time

Job summary

Ethereum Technologies is seeking an experienced Linux System Administrator to manage and support enterprise Linux server environments.

The role focuses on installation, configuration, monitoring, security, automation via Shell/Bash, and troubleshooting across RHEL, Ubuntu, CentOS, and SUSE with Apache/Nginx.

You will maintain DNS/DHCP/SSH, backup procedures, disaster recovery, and documentation to ensure stable production systems.

Qualifications

• Extensive experience with Linux server installation and configuration.
• Proficiency in shell scripting and Bash automation.
• Strong knowledge of user/group management and permissions.
• Experience with network services (DNS, DHCP, SSH, NFS) and security patches.

Responsibilities

• Install, configure, and maintain Linux OS across enterprise servers.
• Manage RHEL, CentOS, Ubuntu, and SUSE servers.
• Perform daily admin, monitoring, and maintenance tasks.
• Manage accounts, groups, permissions, and access controls.
• Configure file systems, LVM, and storage.
• Apply OS patches and kernel updates.
• Monitor performance and network activity.
• Troubleshoot server and application issues.
• Configure DNS, DHCP, SSH, NFS, FTP, TCP/IP services.
• Implement backup, restore, and disaster recovery.
• Harden security and perform vulnerability remediation.
• Automate tasks with Shell/Bash scripting.
• Configure Apache and Nginx web servers.
• Maintain system documentation and runbooks.

Skills

Linux server administration

Shell scripting

User and group management

File systems and storage (LVM)

Kernel patching and OS updates

TCP/IP, DNS, DHCP, SSH, NFS

Apache and Nginx

Performance monitoring and Troubleshoo

Job description

Ethereum Technologies is seeking an experienced Linux System Administrator to manage and support enterprise Linux server environments.

The role focuses on installation, configuration, monitoring, security, automation via Shell/Bash, and troubleshooting across RHEL, Ubuntu, CentOS, and SUSE with Apache/Nginx.

You will maintain DNS/DHCP/SSH, backup procedures, disaster recovery, and documentation to ensure stable production systems.