Virtualisation & OS Engineer (L3)

NTT Ltd.; Sepang; On-site; MYR 150,000 - 210,000; Full time

Job summary

NTT DATA is seeking a seasoned Virtualization & OS Engineer to own the full lifecycle of virtualized server environments and OS configurations across on-premises platforms. You will handle VM provisioning, cluster management, OS hardening, and automation, ensuring high availability and security in a fast-paced managed services setting.

The role emphasizes automation and continuous improvement, with responsibilities spanning incident response, change management, and documentation.

Qualifications

• Expertise in hypervisor administration across VMware vSphere/ESXi, Hyper-V and KVM.
• Experience with vCenter management, clusters, HA, DRS and vMotion.
• Proficient in VM provisioning, snapshots and lifecycle operations.
• Knowledge of virtual network config (vSwitch, VLAN) in hypervisors.
• Experience with OS imaging via PXE-based deployment (WDS).
• Windows Server and Linux OS administration with patching and hardening.
• Strong security and CIS hardening practices.
• Experience with IaC (Terraform) for VM provisioning and Ansible for automation.
• Familiarity with security tools, endpoint protection, and access management.
• Hands-on with file sharing, SFTP, and certificate management.
• Proficient in source control (Git) and code reviews.
• 5–10 years of related working experience.

Responsibilities

• Provision and configure virtual machines per defined standards.
• Manage hypervisor clusters with HA, DRS, vMotion and resource pools.
• Administer Windows Server and Linux OS; patching and CIS hardening.
• Manage user accounts, SSH keys, permissions, and certificates.
• Configure vSwitch, VLAN and virtual network settings on hosts.
• Build OS images and manage PXE-based re-imaging pipelines.
• Maintain services like file sharing, SFTP, and print services.
• Maintain security posture with endpoint protections and firewall rules.
• Deploy and monitor log collection agents across servers.
• Handle storage: partitions, volumes, and capacity planning.
• Contribute to automation initiatives and runbooks.
• Respond to incidents and participate in change management.

Skills

VMware vSphere

Hyper-V

KVM

vCenter

OS Imaging

Windows Admin

Linux Admin

CIS Hardening

Terraform

Ansible

Security Controls

Networking

Storage Management

Git Workflows

Tools

PXE Deployment

WDS

Job description

Make an impact with NTT DATA
Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion – it’s a place where you can grow, belong and thrive.

ABOUT THE ROLE

We are looking for Virtualization & OS Engineers to join our infrastructure team. You will be responsible for the full lifecycle of virtualized server environments and operating systems across on-premises platforms. The role spans VM provisioning and cluster management, OS configuration, patching, security hardening, user management and print/file services. You will work in a fast-paced managed services environment with a strong emphasis on automation and continuous improvement.

KEY RESPONSIBILITIES

• Provision and configure virtual machines following defined build standards and processes
• Manage hypervisor clusters — HA, DRS, vMotion, resource pools, snapshots and vCenter RBAC
• Administer Windows Server and Linux OS — configuration, patching and CIS hardening
• Manage user accounts, access permissions, SSH keys and certificate lifecycle
• Configure and maintain vSwitch, VLAN and virtual network settings within the hypervisor environment
• Build and maintain OS images and manage PXE-based re-imaging pipelines
• Configure and maintain system services, scheduled tasks, file sharing, print server and SFTP infrastructure
• Maintain security posture — endpoint protection, firewall rules and compliance policy enforcement
• Deploy and maintain log collection agents across the server fleet
• Manage disk partitions, volumes, filesystems and storage capacity
• Contribute to automation initiatives and maintain operational runbooks and documentation
• Respond to and resolve infrastructure incidents within agreed service levels
• Participate in change management and peer review of technical changes

REQUIRED SKILLS & COMPETENCIES

• Hypervisor administration — VMware vSphere / ESXi, Microsoft Hyper-V and KVM
• vCenter management — clusters, resource pools, distributed switches, HA, DRS and vMotion
• Virtual machine provisioning, snapshot management and VM lifecycle operations
• vSwitch and VLAN configuration — virtual network management within hypervisor environments
• OS re-imaging — PXE boot, WDS and automated OS deployment pipelines
• Windows Server administration — Active Directory, Group Policy, IIS, Print Server and SFTP
• Linux administration — RHEL and Ubuntu; system configuration, service management and hardening
• OS patching and CIS hardening — enterprise patch management and compliance frameworks
• User and access management — account provisioning, group management and privilege control
• Infrastructure as code — Terraform or equivalent for VM provisioning and configuration
• Configuration management — Ansible or equivalent automation frameworks
• Security tools — endpoint protection, firewall management and compliance scanning
• File sharing protocols — NFS, CIFS and SMB server and client configuration
• Storage management — LVM, disk partitioning, filesystem lifecycle and capacity optimisation
• Certificate lifecycle management and Windows Certificate Authority
• Version control and code review — Git workflows and collaborative development practices
• At least 5 to 10 years of working experience

About NTT DATA

NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world’s leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. Our consulting and industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 70 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is part of NTT Group, which invests over $3 billion each year in R&D.

Equal Opportunity Employer

NTT DATA is proud to be an Equal Opportunity Employer with a global culture that embraces diversity. We are committed to providing an environment free of unfair discrimination and harassment. We do not discriminate based on age, race, colour, gender, sexual orientation, religion, nationality, disability, pregnancy, marital status, veteran status, or any other protected category. Join our growing global team and accelerate your career with us.