Senior IT System & Network Administrator

About the Role We are seeking a highly skilled and results-oriented IT Infrastructure & Service Management Specialist to join our Information Technology team.

This role is responsible for ensuring the stability, security, availability, and continuous improvement of the organization's IT infrastructure while delivering high-quality IT services aligned with business objectives.

The successful candidate will possess strong technical expertise across infrastructure, networking, cloud platforms, virtualization, and IT Service Management (ITSM).

This position requires a proactive professional with excellent analytical, communication, and problem-solving skills who can effectively manage enterprise infrastructure, support business-critical systems, and drive operational excellence.

Key Responsibilities

Infrastructure Administration Administer, monitor, maintain, and optimize enterprise IT infrastructure, ensuring maximum system availability and performance. Install, configure, upgrade, and maintain Windows Server, Linux, and other enterprise server operating systems.

Manage Active Directory, Group Policy, DNS, DHCP, file services, and other core infrastructure services. Perform system health monitoring, capacity planning, performance tuning, and preventive maintenance. Develop and maintain infrastructure documentation, technical procedures, and operational standards.

Ensure infrastructure compliance with organizational security policies and industry best practices. Network Administration Configure, administer, and troubleshoot enterprise routing and switching environments. Monitor network performance and proactively resolve connectivity, latency, and performance issues.

Manage LAN, WAN, VPN, wireless infrastructure, and network segmentation. Support firewall configurations, network security policies, and secure remote connectivity. Participate in network architecture planning and infrastructure expansion projects.

Cloud Infrastructure Management Deploy, administer, and optimize cloud environments across Microsoft Azure, Amazon Web Services (AWS), and Oracle Cloud Infrastructure (OCI). Manage cloud resources, virtual networks, storage, identity management, backup, and disaster recovery solutions.

Monitor cloud performance, availability, utilization, and cost optimization. Implement cloud governance, security controls, and operational best practices. Support cloud migration and digital transformation initiatives.

Virtualization & Data Center Operations Administer VMware and Microsoft Hyper-V virtualization platforms. Manage virtual machines, storage, resource allocation, clustering, snapshots, and backups. Optimize virtualization environments to improve scalability, resilience, and operational efficiency.

Support business continuity and disaster recovery strategies. IT Service Management Lead the daily operation of IT Service Management processes in accordance with ITIL best practices. Manage customer-focused ticketing systems while ensuring compliance with established Service Level Agreements (SLAs).

Monitor incident, problem, request, change, and asset management activities. Analyze recurring incidents and implement long-term corrective and preventive solutions. Develop service reports, KPIs, dashboards, and operational metrics for management.

Drive continual service improvement initiatives across the IT organization. Security & Compliance Implement infrastructure security standards, policies, and controls. Monitor system vulnerabilities and coordinate remediation activities.

Support endpoint protection, identity management, access control, and security auditing. Participate in disaster recovery planning, backup validation, and business continuity testing. Ensure compliance with organizational governance, regulatory requirements, and cybersecurity standards.

Project Delivery Participate in infrastructure implementation, upgrade, migration, and modernization projects. Collaborate with vendors, external partners, and internal stakehol