L2 Infrastructure System Engineer

Questronix Corporation; Makati; On-site; PHP 600,000 - 900,000; Full time

Job summary

Questronix Corporation is seeking an experienced L2 IT Infrastructure Engineer to support enterprise server and storage systems across Production, UAT, and Development environments. You will troubleshoot, monitor, and optimize Windows and Linux servers, manage virtualization platforms, and assist with storage provisioning and recovery activities.

You will handle incident resolution, perform RCA where needed, and participate in 24/7 on-call rotations, ensuring robust uptime and data integrity

Qualifications

• Hands-on Windows and Linux server administration.
• Strong understanding of server infrastructure and performance monitoring.
• Experience with virtualization platforms such as VMware vSphere, ESXi, or Hyper-V.
• Familiar with SAN/NAS/DAS storage and backup/recovery tools.

Responsibilities

• Provide L2 support for enterprise server and storage infra across environments.
• Troubleshoot server/storage issues escalated from L1, and resolve incidents.
• Monitor health, performance, capacity, and availability using enterprise tools.
• Manage server provisioning, configuration, patching, and access control.
• Support storage provisioning, LUNs, volume management, and capacity checks.
• Perform storage troubleshooting for latency, IOPS, and connectivity.
• Assist with SAN, NAS, DAS environments and related protocols.
• Implement changes per change management; maintain docs and KB.
• Provide on-call support in a 24/7 shift environment when required.

Skills

Windows Server

Linux server

VMware vSphere

ESXi

Hyper-V

Storage administration

SAN/NAS/DAS

Backup & recovery

Monitoring tools

ITIL awareness

Networking basics

Incident management

On-call support

Tools

VMware

SolarWinds

Zabbix

Nagios

SCOM

ServiceNow

Jira

Veeam

Commvault

NetBackup

Dell EMC

NetApp

HPE

IBM storage

iSCSI / FC

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.