L2 Infrastructure System Engineer

Questronix Corporation; Manila; On-site; PHP 600,000 - 1,200,000; Full time

Job summary

Questronix Corporation is seeking a Level 2 IT System Administrator to provide escalation support for Windows and Linux servers and enterprise storage environments. You will troubleshoot incidents, monitor health and performance, and coordinate with cross-functional teams to restore services.

You will manage server provisioning, patching, access control, and backup operations, including SAN/NAS/DAS storage, RAID, and virtualization platforms such as VMware vSphere/ESXi and Hyper-V.

Qualifications

• Hands-on experience with Windows Server and Linux server administration.

Responsibilities

• Provide Level 2 (L2) operational support for enterprise server and storage infrastructure across Production, UAT, and Development environments.
• Troubleshoot and resolve incidents escalated from L1 teams for server- and storage-related issues.
• Monitor server/storage health, performance, capacity, and availability using enterprise tools; take corrective actions.
• Manage server provisioning, configuration, patch management, and access control.
• Support storage provisioning, LUN allocation, volume management, and capacity monitoring.
• Troubleshoot storage issues: disk failures, latency, IOPS, connectivity.
• Support SAN, NAS, DAS environments and related protocols (FC, iSCSI, NFS, SMB).
• Perform basic SAN administration: LUN mapping, zoning, connectivity troubleshooting.
• Monitor storage performance and investigate latency/throughput issues.
• Support RAID configurations and storage array health monitoring.
• Collaborate with network, storage, database, application, and vendor teams during incident resolution.
• Ensure security policy compliance, patching standards, access control, and operational procedures.
• Provide on-call support and participate in 24/7 shift-based operations when required.

Skills

Windows Server

Linux Server

VMware vSphere/ESXi

Storage administration

LUN provisioning

Performance tuning

Incident management

On-call support

Active Directory

Networking basics

Backup and recovery

SAN/NAS/DAS

Tools

Dell EMC

NetApp

HPE storage

Veeam

Nagios

SolarWinds

Job description

Job Description:

• Provide Level 2 (L2) operational support for enterprise server and storage infrastructure, including Windows and Linux systems across Production, UAT, and Development environments.

• Perform advanced troubleshooting and incident resolution for server- and storage-related issues escalated from L1 support teams.

• Monitor server and storage health, performance, capacity, and availability using enterprise monitoring tools, and take corrective actions when required.

• Manage server administration tasks, including user access, services management, system logs, disk utilization, and performance tuning.

• Support storage administration and operations, including storage provisioning, LUN allocation, volume management, and capacity monitoring.

• Perform storage troubleshooting related to disk failures, storage latency, connectivity, IOPS, and capacity utilization.

• Support enterprise storage technologies, including SAN, NAS, and DAS environments.

• Perform basic SAN administration, including LUN mapping, zoning coordination, and storage connectivity troubleshooting.

• Support storage technologies and protocols such as Fibre Channel (FC), iSCSI, NFS, and SMB.

• Monitor storage performance and investigate issues related to storage latency, throughput, and I/O performance.

• Support RAID configurations, disk replacement coordination, and storage array health monitoring.

• Manage server provisioning, configuration, and patch management following established standards and procedures.

• Troubleshoot OS-level issues, application dependencies, and network connectivity problems impacting server and storage operations.

• Manage backup and restore operations using enterprise backup tools and ensure backup job success and data recovery readiness.

• Support storage backup, replication, snapshots, and recovery operations.

• Perform root cause analysis (RCA) for recurring server and storage incidents and recommend preventive actions.

• Support virtualized environments such as VMware vSphere, ESXi, and Microsoft Hyper-V, including VM monitoring, basic provisioning, and troubleshooting.

• Execute approved infrastructure changes, maintenance activities, storage expansion, and system upgrades in accordance with change management procedures.

• Maintain and update technical documentation, operational procedures, and knowledge base articles.

• Collaborate with network, storage, database, application, and vendor support teams during incident resolution and service restoration.

• Ensure compliance with security policies, patching standards, access control procedures, and infrastructure operational standards.

• Provide on-call support and participate in a 24/7 shift-based operational environment when required.
  Qualifications:

• Hands-on experience with Windows Server and/or Linux server administration.

• Strong understanding of server infrastructure, operating systems, and system performance monitoring.

• Experience with virtualization platforms such as VMware vSphere, ESXi, or Microsoft Hyper-V.

• Knowledge of Active Directory administration, including user and group management, Group Policy, and authentication services.

• Familiarity with enterprise storage technologies such as SAN, NAS, and DAS.

• Basic to intermediate knowledge of storage administration, including LUN provisioning, volume management, storage capacity monitoring, and disk management.

• Understanding of RAID levels, disk technologies, storage performance, and I/O troubleshooting.

• Familiarity with storage protocols such as Fibre Channel, iSCSI, NFS, and SMB.

• Knowledge of storage platforms such as Dell EMC, NetApp, HPE, IBM, or similar enterprise storage solutions.

• Familiarity with backup and recovery solutions such as Veeam, Commvault, NetBackup, or similar tools.

• Understanding of backup policies, snapshots, replication, and disaster recovery concepts.

• Understanding of server patch management, system updates, and security hardening practices.

• Experience troubleshooting server and storage performance issues involving disk utilization, memory, CPU, latency, IOPS, and service failures.

• Basic knowledge of network troubleshooting, including TCP/IP, DNS, DHCP, VLANs, and connectivity validation.

• Familiarity with enterprise monitoring tools such as SolarWinds, Zabbix, Nagios, SCOM, or similar platforms.

• Experience with ITSM platforms such as ServiceNow, Jira, or similar ticketing systems.

• Good analytical, problem-solving, communication, and technical documentation skills.

• Understanding of ITIL processes, including Incident, Problem, and Change Management.

• Willingness to work in 24/7 shifting schedules and on-call support environments.