System and Network Administrator 24/7

Role Overview:

QST is seeking a System and Network Administrator to join our global IT team. This is a hands-on role combining Linux system administration, Windows administration, networking, infrastructure operations, and internal support responsibilities.

The successful candidate will work in a high-availability trading environment and will be involved in maintaining, upgrading, and supporting critical infrastructure across multiple global locations. This role requires an individual who is comfortable working independently, troubleshooting complex technical issues, participating in infrastructure projects, and supporting production systems.

Key Responsibilities:

Linux and Windows Administration

• Administer, maintain, and troubleshoot Linux servers, primarily Oracle Linux.
• Install, configure, patch, and upgrade operating systems and infrastructure services.
• Perform kernel upgrades, system ha...