Senior Linux System Administrator (Infrastructure Build & Delivery)

About the role

An experienced Infrastructure Build & Delivery Lead is sought to manage end-to-end server provisioning, infrastructure deployment and cross-functional coordination for enterprise environments. The role covers server build activities, technical dependency resolution, coordination with multiple infrastructure teams and timely environment handover. It is based onsite in Singapore and is open only to local Singapore citizens or PR holders.

Key responsibilities

• Review build requirements, define provisioning schedules and create/manage build tickets, change records and JIRA requests
• Generate server hostnames through enterprise provisioning portals and support new server builds from initiation to deployment
• Monitor build progress, resolve blockers and ensure delivery meets project timelines and SLAs
• Coordinate hardware roll-in requests, rack deployment validation (hostnames, IP addresses, switch ports, NBU connectivity) and commissioning and warranty support with Data Center Facilities Management
• Work with Network, Storage, Virtualization and Platform teams on dependencies, firewalls, DNS, load balancers and connectivity
• Run daily deployment status meetings, prepare build status reports and escalate risks
• Support OS configuration, user administration, role management and server hardening, and remediate security vulnerabilities with Application and GIS teams
• Lead GIS onboarding and infrastructure handover, and provide post-deployment support during stabilization

Required profile

• Strong experience in server build, provisioning and infrastructure delivery
• Knowledge of Windows and/or Linux server administration
• Experience coordinating with multiple infrastructure teams in enterprise environments
• Preferred: Bachelor's degree in Computer Science, Information Technology or a related field
• Preferred: ITIL Foundation certification; Microsoft, Linux, VMware or cloud certifications; experience in large-scale enterprise or global delivery environments

Required skills

• JIRA and ticketing systems, change management processes
• Networking (DNS, firewall, load balancers), storage infrastructure and virtualization platforms (VMware, Hyper-V, OpenShift)
• Server hardening, vulnerability remediation and security compliance