[Hiring] L3 Linux System Engineer @ServerHub

Role Description

As an L3 Linux System Engineer, you will be at the forefront of our operations, ensuring our hosting platforms are optimized, secure, and always online.

Job Responsibilities:

• Escalation & Troubleshooting:
  • Act as the final escalation point (L3) for complex server, hosting, and network-related issues.
  • Diagnose and resolve critical system failures, network outages, and performance issues.
• Linux Server Administration:
  • Manage, optimize, and secure Linux-based hosting environments (CentOS, Ubuntu, RHEL).
  • Administer and fine-tune web servers (Apache, Nginx, LiteSpeed), databases (MySQL, PostgreSQL), and caching layers (Redis, Memcached).
  • Build and deploy servers from the ground up, ensuring optimal configurations for performance and security.
• Automation & DevOps:
  • Develop and maintain automation scripts (Bash, Python, Perl) for server provisioning and configuration management.
  • Utilize Ansible, Terraform, or similar tools for automating infrastructure deployments.
• Cloud & Virtualization:
  • Deploy and manage KVM, OpenStack, VMware, or containerized environments (Docker, Kubernetes).
  • Support cloud-based hosting solutions (AWS, Google Cloud, Azure).
• Security & Compliance:
  • Implement security best practices, including firewall rules, SELinux/AppArmor, IDS/IPS.
  • Perform vulnerability assessments and patch management to secure customer environments.
• Monitoring & Incident Response:
  • Set up and manage monitoring tools like Prometheus, Grafana, Zabbix, Nagios.
  • Participate in 24/7 on-call rotation for urgent system issues.
• Collaboration & Mentoring:
  • Work closely with NOC, DevOps, and Engineering teams to ensure smooth operations.
  • Provide guidance and mentorship to L1 & L2 support engineers.

Qualifications

• 11+ years of hands-on Linux system administration experience in a web hosting or cloud environment.
• 7+ years of experience in a Senior position or Level 3 Engineer role.
• MUST be a KVM and Libvirt expert with a minimum of 7+ years of experience.
• Expert knowledge of web hosting technologies (cPanel, Plesk, WHM, LAMP/LEMP stacks).
• Strong scripting ability in Perl, Bash, and Python.
• Experience with configuration management tools (Ansible, Puppet, Chef).
• Networking expertise – understanding of TCP/IP, DNS, VPN, Firewalls, Load Balancing.
• Familiarity with RAID, SAN, NAS, and distributed storage systems.
• Experience working in a 24/7 production environment with on-call duties.
• Ability to build and configure servers from the ground up.
• Certifications such as RHCE, AWS Certified SysOps Administrator, or Kubernetes (CKA) are a plus.
• Good English Communication Skills.

Benefits

• A fast-paced, innovative environment in a growing cloud hosting company.
• Cutting-edge technologies and challenging projects.
• Career growth opportunities and professional development.
• Paid leaves and fully remote set-up.