Senior System Administrator (Level 3 Support)/ 26 minutes ago
Quick Summary
About UltaHost
UltaHost is a global web hosting company with a fully remote team. We are expanding our infrastructure and preparing to launch a new suite of cloud hosting products for customers worldwide.
Job Overview
We are seeking a Senior System Administrator (L3 Support) to join our expanding infrastructure team. This role focuses on maintaining, optimizing, and ensuring the reliability of our production systems and web hosting infrastructure.
As a senior operations team member, you will be instrumental in designing scalable system architectures, troubleshooting complex infrastructure issues, and providing support for internal teams and customer-facing platforms.
This position demands deep expertise in Linux systems, networking, virtualization, and modern infrastructure automation tools.
Key Responsibilities
- Design, implement, and maintain scalable and reliable Linux-based infrastructure.
- Monitor system performance and proactively identify opportunities for optimization and improvement.
- Troubleshoot complex infrastructure and system-level issues across servers, networking, and applications.
- Maintain and optimize server operating systems across physical and virtual environments.
- Ensure the stability, integrity, and security of systems supporting critical business operations.
- Implement and manage infrastructure monitoring, alerting, and reporting tools.
- Identify and remediate security vulnerabilities across systems and services.
- Support and mentor Level 1 and Level 2 engineers when handling complex technical issues.
- Develop and maintain system documentation, procedures, and architecture guidelines.
- Collaborate with development and operations teams to improve infrastructure performance and reliability.
- Participate in on-call rotations and incident response processes when necessary.
- Contribute to infrastructure automation and continuous improvement initiatives.
Required Qualifications
- Excellent written and verbal communication skills in English.
- Strong experience with Linux-based systems (CentOS, RHEL, CloudLinux).
- Deep understanding of the LAMP stack (Linux, Apache/OpenLiteSpeed, MySQL/MariaDB, PHP).
- Strong knowledge of networking fundamentals, protocols, routing, and firewall configurations.
- Experience managing Linux firewall technologies.
- Proficiency in scripting languages such as Bash, Python, or Perl for automation.
- Experience administering relational databases such as MySQL, MariaDB, or PostgreSQL.
- Hands-on experience with virtualization platforms such as Proxmox, Virtuozzo, or VMware.
- Experience with configuration management tools such as Ansible, Puppet, or SaltStack.
- Knowledge of storage technologies including NFS and iSCSI.
- Experience with Docker containerization and container-based deployments.
- Hands-on experience configuring and managing LiteSpeed, Nginx, Apache servers.
- Familiarity with hosting control panels such as cPanel, Plesk, CyberPanel, HestiaCP, CWP, and WHMCS Ticketing Panel.