IT Systems Engineer (handling L3 level)

Recruit Express Pte Ltd; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

Recruit Express Pte Ltd is seeking an experienced Infrastructure Engineer to provide L3 support for complex incidents and lead major outages. You will troubleshoot VMware, Cisco UCS, NetApp storage, and backup systems, while mentoring L1/L2 engineers and ensuring SLA delivery.

The role covers disaster recovery, OS and server support, patching, and capacity planning in a large enterprise environment. Singapore-based, on-site presence required.

Qualifications

• Diploma or degree in Computer Science, IT, Engineering or related field.
• 5–8+ years of experience in enterprise infrastructure/system engineering.
• Strong hands-on experience with VMware environments.
• Hands-on experience with Cisco UCS.
• Good experience with NetApp storage.
• Strong experience with NetBackup and/or Veeam.
• Experience supporting large-scale enterprise or multi-site environments.
• Experience with ITIL Incident, Problem and Change Management.
• VMware VCP, Cisco, NetApp, Veeam or relevant infra certifications are advantageous.

Responsibilities

• Provide L3 technical support for complex infrastructure incidents escalated from L1/L2 teams.
• Troubleshoot servers, virtualization, storage, backup, and compute issues.
• Analyze system logs, performance metrics, and configurations for RCA.
• Lead troubleshooting for major incidents and outages; perform RCA.
• Mentor L1/L2 engineers and ensure SLAs are met.
• Administer and troubleshoot VMware vSphere, ESXi, and vCenter environments.
• Manage Cisco UCS infrastructure and UCS Manager components.
• Manage NetApp storage provisioning, LUNs, and connectivity.
• Administer and troubleshoot NetBackup and Veeam backup environments.
• Participate in DR exercises, incident management, and change processes.

Education

Diploma or Degree in Computer Science, IT, Engineering or related discipline

Tools

VMware vSphere

ESXi

vCenter

High Availability (HA) / DRS / vMotion

Virtual networking

Cisco UCS

NetApp storage

NetBackup

Veeam

Windows Server

PowerShell

Job description

Key Responsibilities

1. L3 Infrastructure Support

• - Provide L3 technical support for complex infrastructure incidents escalated from L1/L2 teams.
• - Troubleshoot complex server, virtualisation, storage, backup, and compute issues.
• - Perform detailed technical analysis of system logs, performance metrics, configurations, and infrastructure events.
• - Lead troubleshooting for major incidents and critical infrastructure outages.
• - Perform Root Cause Analysis (RCA) and identify permanent corrective actions.
• - Provide technical guidance and mentoring to L1/L2engineers.
• - Ensure incidents are resolved within agreed SLA.

2. VMware Virtualisation

• - Administer and troubleshoot enterprise VMware vSphere, ESXi and vCenter environments.
• - Support VMware clusters, HA, DRS, vMotion and virtual networking.
• - Troubleshoot VM CPU, memory, storage and network performance issues.
• - Perform ESXi host and VMware Tools upgrades.
• - Support VM provisioning, migration, snapshots and lifecycle management.
• - Troubleshoot ESXi host, vCenter and cluster-related issues.
• - Perform VMware capacity planning and resource optimisation.
• - Participate in VMware platform upgrades and migration projects.

3. Cisco UCS

• - Manage and troubleshoot Cisco UCS infrastructure.
• - Support UCS Manager, Fabric Interconnects, chassis, blades and service profiles.
• - Troubleshoot UCS connectivity, hardware, firmware and performance issues.
• - Perform UCS firmware upgrades and infrastructure maintenance.
• - Work with Cisco TAC on complex hardware and platform issues.
• - Support UCS integration with VMware and enterprise storage environments.

4. NetApp Storage

• - Manage and troubleshoot NetApp storage infrastructure.
• - Support storage provisioning, volumes, LUNs, aggregates and storage connectivity.
• - Troubleshoot storage performance, capacity and connectivity issues.
• - Support NFS, CIFS/SMB and SAN environments where applicable.
• - Monitor storage capacity and performance.
• - Perform storage configuration changes, upgrades and lifecycle activities.
• - Work with NetApp support on complex storage incidents.

5. Backup & Recovery

NetBackup

• - Administer and troubleshoot Veritas NetBackup environments.
• - Troubleshoot backup failures, media issues, policy configuration and backup performance.
• - Monitor backup jobs and ensure backup compliance.
• - Perform backup and recovery troubleshooting.
• - Support backup infrastructure upgrades and maintenance.

Veeam

• - Administer and troubleshoot Veeam Backup &Replication.
• - Configure and maintain backup jobs and policies.
• - Troubleshoot backup and replication failures.
• - Support VM recovery, file-level recovery and disaster recovery activities.
• - Monitor backup health and capacity.
• - Perform Veeam upgrades and infrastructure maintenance.

6. Disaster Recovery

• - Support enterprise Disaster Recovery (DR) infrastructure and processes.
• - Participate in regular DR exercises and recovery testing.
• - Validate backup integrity and recovery capability.
• - Troubleshoot replication and recovery issues.
• - Maintain DR documentation, recovery procedures and runbooks.
• - Support business continuity and disaster recovery initiatives.

7. Server & Operating System Support

• - Support enterprise physical and virtual server infrastructure.
• - Troubleshoot Windows Server and infrastructure-related issues.
• - Support server provisioning, upgrades, patching and decommissioning.
• - Analyse CPU, memory, disk, network and OS performance.
• - Work with hardware vendors on server-related incidents.
• - Ensure servers comply with corporate security and configuration standards.

8. Infrastructure Patching & Upgrades

• - Plan and execute infrastructure patching and upgrade activities.
• - Perform VMware ESXi, VMware Tools, Cisco UCS and storage upgrades.
• - Coordinate patching activities with application and infrastructure owners.
• - Perform pre-change and post-change validation.
• - Develop implementation and rollback plans.
• - Ensure changes are implemented according to approved Change Management procedures.

9. Incident & Problem Management

• - Take ownership of complex and critical infrastructure incidents.
• - Participate in Major Incident Management and technical bridge calls.
• - Perform detailed RCA for critical and recurring incidents.
• - Identify permanent solutions to recurring infrastructure issues.
• - Maintain technical knowledge articles and troubleshooting guides.
• - Drive Problem Management activities to improve infrastructure stability.

Technology| Required Skills

• VMware| vSphere, ESXi, vCenter, HA, DRS, vMotion, virtual networking
• Cisco UCS| UCS Manager, Fabric Interconnects, Blades, Service Profiles, Firmware
• NetApp| Storage, SAN/NAS, NFS, SMB, LUN, Capacity &Performance
• NetBackup| Backup policies, troubleshooting, recovery, media management
• Veeam| Backup & Replication, VM backup, recovery, replication
• Windows Server| Administration, troubleshooting, patching, performance
• PowerShell| Scripting and infrastructure automation

Qualifications & Experience

• - Diploma or Degree in Computer Science, Information Technology, Engineering or related discipline.
• - 5–8+ years of experience in enterprise infrastructure/system engineering.
• - Strong hands-on experience with VMware environments.
• - Hands-on experience with Cisco UCS.
• - Good experience with NetApp storage.
• - Strong experience with either NetBackup and/or Veeam.
• - Experience supporting large-scale enterprise or multi-site environments.
• - Experience with ITIL Incident, Problem and Change Management.
• - VMware VCP, Cisco, NetApp, Veeam or relevant infrastructure certifications are advantageous.

Key Competencies

• - Strong L3 troubleshooting and analytical skills.
• - Excellent problem-solving capabilities.
• - Strong ownership and accountability.
• - Ability to independently troubleshoot complex infrastructure issues.
• - Strong communication and stakeholder-management skills.
• - Ability to work under pressure during major incidents.
• - Strong documentation and reporting skills.
• - Proactive approach to infrastructure monitoring and improvement.