Senior System Engineer

Key Responsibility: Windows Server & Infrastructure Administration • Perform advanced administration, configuration, troubleshooting, and maintenance of Microsoft Windows Server 2012/2016/2019 environments. • Manage enterprise Windows server infrastructure including server builds, configuration, upgrades, performance tuning, and lifecycle management. • Monitor server availability, performance, capacity, and system health to ensure compliance with operational and availability requirements. • Diagnose and resolve complex Windows operating system, hardware, system services, and infrastructure-related incidents. • Perform system health checks and proactively identify potential infrastructure issues before they impact business operations. • Support physical and virtual server environments, including hardware components, storage, system resources, and server dependencies. • Participate in infrastructure upgrades, technology refresh, server migration, consolidation, and decommissioning activities. Active Directory & Identity Management • Provide advanced administration and operational support for Microsoft Active Directory environments. • Manage and troubleshoot Active Directory components including users, groups, computers, Organizational Units (OUs), Group Policy Objects (GPOs), authentication, permissions, and domain services. • Perform investigation and resolution of complex AD-related issues involving authentication, access, replication, policies, and domain connectivity. • Support Active Directory security and administration best practices, including access control and privileged account management. • Assist with AD restructuring, domain migrations, policy changes, and infrastructure enhancement initiatives. • Identify opportunities to automate repetitive Active Directory administration and operational tasks. PowerShell & Automation • Develop and maintain PowerShell scripts to automate system administration, monitoring, reporting, configuration, maintenance, and operational activities. • Automate repetitive Windows Server and Active Directory tasks to improve operational efficiency and reduce manual intervention. • Develop scripts for server health checks, user/account administration, system information gathering, patch validation, service monitoring, and operational reporting. • Troubleshoot and enhance existing automation scripts while ensuring appropriate error handling, logging, and operational controls. • Identify opportunities to introduce automation and standardisation into infrastructure support processes. Server Patching & Security • Plan, coordinate, and execute Windows Server patching activities in accordance with security requirements, change management procedures, and agreed maintenance windows. • Perform pre- and post-patch validation to ensure system stability and application availability. • Investigate patch-related issues and coordinate remediation with relevant infrastructure and application teams. • Maintain patch compliance and provide accurate operational reporting. • Support vulnerability remediation and infrastructure hardening activities where required. • Ensure infrastructure changes are implemented in accordance with approved change management and security procedures. Server Management & Monitoring Tools • Administer and utilise enterprise server management, monitoring, deployment, and remote administration tools. • Monitor infrastructure alerts and events, perform initial investigation, and take appropriate corrective actions. • Support deployment and configuration management activities across Windows server environments. • Maintain accurate system configuration information, operational records, and infrastructure documentation. • Where applicable, utilise Altiris and other enterprise management tools for software deployment, configuration, inventory, patching, and endpoint/server management. Storage & Hardware Infrastructure • Demonstrate working knowledge of enterprise server storage technologies and RAID configurations, including RAID 0+1, RAID 1, RAID 5 and other commonly used RAID technologies. • Troubleshoot server hardware, storage, disk, and RAID-related issues. • Perform basic analysis of storage performance, capacity, disk health, and redundancy. • Work with hardware and infrastructure vendors for complex hardware and storage-related incidents. • Support hardware replacement, server maintenance, and infrastructure refresh activities. Incident, Problem & Service Management • Provide Level 2/Level 3 technical support for complex Windows infrastructure and Active Directory incidents. • Manage incidents in accordance with defined Service Level Agreements (SLAs) and operational priorities. • Perform detailed troubleshooting, root cause analysis, and problem resolution for recurring or high-impact infrastructure issues. • Participate in major incident resolution and provide timely technical updates to relevant stakeholders. • Maintain accurate incident, problem, change, and knowledge records within enterprise ticketing systems such as HP Service Manager / ServiceNow or equivalent platforms. • Ensure incidents are properly documented, tracked, escalated, and resolved within agreed service levels. • Participate in problem management activities and recommend preventive measures to minimise recurring incidents. Change & Release Management • Implement infrastructure changes in accordance with established ITIL and change management processes. • Prepare technical implementation plans, risk assessments, rollback plans, and validation procedures for infrastructure changes. • Support scheduled maintenance activities and planned service outages. • Ensure all changes are appropriately documented and approved before implementation. • Participate in post-implementation reviews and contribute to continuous improvement of change processes. Operational Support & Shift Operations • Provide infrastructure support within a…