Senior System Administrator

About the role

This role covers the day-to-day operations and maintenance of servers, storage, operating systems, virtualization and backup systems, with 7x24 on-call production support. It also includes basic database administration and regular infrastructure health checks, and involves coordination with Chinese-speaking counterparts at the bank's head office.

Key responsibilities

• Maintain server and storage hardware, including installation, configuration, health monitoring, fault handling, firmware upgrades and lifecycle management.
• Administer Windows and Linux systems, keeping them available, stable and compliant with security baselines.
• Manage middleware and database platforms, coordinating with application teams on connectivity and integration.
• Support virtualization (VMware, Hyper-V) and VDI (Horizon View), including provisioning, monitoring and troubleshooting.
• Configure, schedule and monitor enterprise backup systems, and support data restoration.
• Perform capacity management, baseline management and regular infrastructure health checks, and support proactive remediation.
• Handle incidents and service degradation, investigate root causes and track corrective and preventive actions.
• Take part in upgrades, patching and changes following strict change management and rollback procedures.
• Develop automation scripts and tools, and maintain technical documentation such as architecture diagrams, SOPs and emergency response plans.
• Support internal audits, regulatory inspections and compliance reviews, and take part in the on-call rotation.

Required profile

• Bachelor's degree or above in Computer Science, Information Technology or a related field.
• At least 5 years of experience in system administration or infrastructure operations, preferably in banking, financial services or a large enterprise.
• Ability to work in a highly regulated production environment, with strong attention to risk, security controls and audit requirements.
• Professional written and verbal communication in English and Chinese.

Required skills

• Server and storage hardware, Windows and Linux administration.
• Middleware and database platform support; basic Oracle, SQL Server and MySQL administration.
• Virtualization (VMware, Hyper-V) and VDI (Horizon View).
• Incident handling, RCA, change management and basic automation or scripting.