IT Infrastructure Executive – Infrastructure Operations

The System Administrator & Engineer is responsible for maintaining and optimizing the company’s hybrid infrastructure, ensuring the reliability, performance, and security of systems across on-premises data centers and cloud environments. This role supports mission-critical applications and services, with a strong focus on system integrity, identity management, and operational excellence.

Major Responsibilities

• System Administration

  • Manage and maintain Windows Server environments, including patching, performance tuning, and troubleshooting.

  • Administer and support MS SQL and Oracle databases in collaboration with database teams.

  • Operate and monitor Nutanix and VMWare clusters to ensure high availability and optimal resource utilization.

  • Manage systems changes through change request process and respond promptly to incident, investigate and provide temporary and/or permanent resolution.

  • Provide support outside of business hours, weekends, public holidays, non-working days (when required) for planned maintenances, unplanned outages, ad-hoc activities.

• Active Directory & Identity Management

  • Administer Active Directory (AD), including user and group management, GPOs, OU structure, and domain services.

  • Ensure secure and efficient identity and access management across systems and applications.

  • Support integration of AD with cloud services and security platforms.

• Data Center Operations

  • Oversee daily operations of on-premises data centers, ensuring uptime, environmental monitoring, and physical security.

  • Coordinate hardware installations, upgrades, and maintenance for servers, storage, and networking equipment.

  • Maintain inventory of data center assets and ensure proper documentation of configurations and changes.

  • Collaborate with vendors and service providers for support and lifecycle management of infrastructure components.

• Cloud & Hybrid Operations

  • Support workloads hosted in AWS, including EC2, S3, RDS, and VPC configurations.

  • Assist in cloud provisioning, automation, and migration tasks using infrastructure-as-code tools.

  • Troubleshoot and resolve any issues that may arise within on-premises and cloud infrastructure.

  • Participate and contribute during regular audit activities on the IT infrastructure to ensure compliance.

• Storage & Backup

  • Manage Dell storage systems, including provisioning, performance monitoring, and capacity planning.

  • Operate and maintain Cohesity backup systems, ensuring data protection and recovery readiness, and compliance with industry backup governance and policy.

• Network & Connectivity (preferred and not mandatory)

  • Collaborate with network teams to support WAN connectivity across sites using Cisco, Aruba, Huawei, and SingTel MegaPop solutions.

  • Monitor and troubleshoot network break fix and performance issues and assist in configuration changes.

  • Manage the lifecycle of networking components.

• Security & Compliance

  • Support firewall operations (Check Point, Palo Alto), VPN (Pulse Secure, Check Point), proxy, and SASE systems (preferred and not mandatory).

  • Ensure systems comply with security policies and assist in vulnerability remediation.

  • Participate and support annual DR, Data Recovery, and cyber exercises.

• Monitoring & Documentation

  • Implement and maintain system monitoring tools and dashboards.

  • Document configurations, procedures, and incident reports for operational transparency and knowledge sharing.

Requirements:

Education & Experience

• Bachelor’s degree in Information Technology, Computer Science, or related field.

• 5+ years of experience in system administration or infrastructure engineering roles.

• Experience in managing hybrid environments (on-prem and AWS cloud).

Technical Skills

• Proficiency in:

  • Operating Systems: Windows Server

  • Directory Service: Active Directory, user/group management, GPOs, domain services

  • Virtualization & Storage: Nutanix, VMWare, Lenovo

  • Databases: Oracle, MS SQL (preferred and not mandatory)

  • Cloud Platforms: AWS

  • Backup Systems: Cohesity or similar

  • Networking: Familiarity with Cisco, Aruba, Huawei, SingTel MegaPop (preferred and not mandatory)

  • Security Tools: Check Point, Palo Alto, Pulse Secure VPN, proxies, Cisco SASE (preferred and not mandatory)

• Experience with scripting (PowerShell, Bash) and automation tools is a plus.

• Familiarity with infrastructure-as-code (e.g., Terraform, CloudFormation) and automation tools is a plus.

Soft Skills

• Strong problem-solving and troubleshooting abilities.

• Good communication and documentation skills.

• Ability to work independently and collaboratively in a fast-paced environment.