Senior Systems & Infrastructure Engineer (L3 Support)

JustOneGalaxy Recruitment Limited; Hong Kong Island; On-site; HKD 480,000 - 720,000; Full time

Job summary

JustOneGalaxy Recruitment Limited seeks a Senior Systems & Infrastructure Engineer (L3) to oversee compute, virtualization, storage, backup, and DR across on-premises and data centers. You will act as the Tier-3 escalation authority and drive upgrades to ensure high availability and business continuity.

The role requires 5–8+ years of infrastructure experience, VMware vSphere and Cisco UCS expertise, and strong PowerShell/Windows Server skills.

Qualifications

• Bachelor’s degree or Diploma in IT, Computer Science, or System Engineering must-have.
• 5–8+ years infrastructure engineering experience.
• Industry certifications preferred.

Responsibilities

• Provide Tier-3 troubleshooting for compute, storage, and virtualization incidents.
• Drive RCA and permanent defect elimination (Root Cause Analysis).
• Manage VMware vSphere environments, capacity planning, clustering upgrades, and performance optimization.
• Maintain Cisco UCS fabric interconnects, blade chassis, and firmware baselines.
• Provision and manage NetApp storage (SAN/NAS, NFS, SMB) and monitor health.
• Administer enterprise backup frameworks (Veritas NetBackup, Veeam); conduct DR testing.
• Maintain Windows Server platforms and develop PowerShell automation tasks.
• Plan and execute infrastructure firmware/software updates with change control.

Skills

VMware vSphere

Cisco UCS

NetApp ONTAP

Veritas NetBackup

Veeam Backup & Replication

PowerShell

Windows Server

ITIL

Education

Bachelor’s degree or Diploma in IT/CS/System Engineering

Tools

VCP-DCV

Cisco Data Center

NetApp NCIE

Veeam VMCE

Job description

Role Overview

The Senior Systems & Infrastructure Engineer (L3) oversees the compute, virtualization, enterprise storage, backup, and disaster recovery ecosystem. Serving as the Level 3 escalation authority, this position maintains high availability, executes infrastructure upgrades, and guarantees business continuity across on-premises and data center environments.

Key Responsibilities

L3 Escalation & Problem Management: Provide Tier-3 troubleshooting for complex compute, storage, and virtualization incidents; drive Root Cause Analysis (RCA) and permanent defect elimination.

Virtualization Architecture: Manage enterprise VMware vSphere (ESXi, vCenter, HA, DRS, vMotion) environments, including capacity planning, cluster upgrades, and performance optimization.

Compute Infrastructure: Maintain Cisco UCS fabric interconnects, blade chassis, service profiles, and firmware baselines in coordination with TAC.

Enterprise Storage: Provision and manage NetApp storage environments (SAN/NAS, NFS, CIFS/SMB, LUN management), monitoring health and performance metrics.

Data Protection & DR: Administer enterprise backup frameworks (Veritas NetBackup, Veeam Backup & Replication); execute regular Disaster Recovery (DR) testing and runbook validation.

Operating Systems & Automation: Maintain enterprise Windows Server platforms, utilizing PowerShell scripting for infrastructure maintenance and automation tasks.

Upgrades & Maintenance: Plan and execute infrastructure firmware/software updates, applying strict pre- and post-change validation procedures.

Technical Skills & Qualifications

Education & Experience: Bachelor’s degree or Diploma in IT, Computer Science, or System Engineering with 5–8+ years of infrastructure engineering experience.

Certifications: VCP-DCV, Cisco Data Center, NetApp NCIE, or Veeam VMCE preferred.

Virtualization & Compute: Advanced knowledge of VMware vSphere 7.x/8.x and Cisco UCS Manager.

Storage & Data Protection: Hands-on experience with NetApp ONTAP, Veritas NetBackup, and Veeam Backup & Replication.

OS & Scripting: Proficient in Windows Server management and PowerShell automation.

Process & Soft Skills: Solid understanding of ITIL Incident, Problem, and Change Management workflows.

Working Conditions

Off-hours maintenance coverage and scheduled on-call support.

Periodic visits to enterprise data centers.