Senior System Engineer

1. Job ObjectiveResponsible for managing, operating, and optimizing the bank’s IT infrastructure, including servers, operating systems, virtualization platforms, storage, and data backup systems. Ensure stable, secure, and efficient system operations while meeting performance, availability, and disaster recovery requirements.Act as a technical subject matter expert in resolving complex infrastructure incidents, providing solution design recommendations, and implementing projects within the assigned scope.2. Key ResponsibilitiesSystem Infrastructure Management and OperationsAdminister physical servers, virtualization platforms, Windows Server/Linux operating systems, and core infrastructure services such as Active Directory, DNS, DHCP, and NTP.Manage SAN/NAS storage systems, configure connectivity, allocate storage capacity, and implement redundant data access paths.Operate backup and recovery systems; monitor backup jobs, troubleshoot failures, and conduct periodic recovery testing.Manage Microsoft 365 services, email systems, and endpoint devices within the assigned scope.Monitor system resources, performance, and operational health; analyze utilization trends, forecast capacity requirements, and recommend infrastructure upgrades or expansion plans.Deploy security patches, perform system hardening, and maintain system configurations in accordance with approved standards.Incident Management and System ContinuityLead the investigation and resolution of complex technical incidents involving servers, operating systems, virtualization, storage, and backup systems.Analyze logs, monitoring data, and performance metrics to identify root causes; prepare Root Cause Analysis (RCA) reports and recommend preventive measures to avoid recurrence.Collaborate with DBA, application development, information security teams, and vendors to resolve incidents involving multiple infrastructure components.Develop, maintain, and test High Availability/Disaster Recovery (HA/DR) plans, system failover procedures, and service recovery processes in accordance with approved Recovery Time Objectives (RTOs) and Recovery Point Objectives (RPOs).Participate in on-call rotations, incident resolution, and scheduled after-hours system changes as assigned.Solution Design and Project ImplementationAnalyze business and technical requirements, assess the existing infrastructure, and recommend appropriate architectures, configurations, and resource capacity for new systems or infrastructure upgrades.Lead technical implementation or participate in projects involving servers, storage, virtualization, backup solutions, data centers/disaster recovery sites (DC/DR), and infrastructure services.Prepare and review technical design documents, implementation plans, testing procedures, system migration plans, and rollback plans.Evaluate vendor solutions based on integration capabilities, performance, availability, recoverability, operational manageability, product lifecycle, and Total Cost of Ownership (TCO).Research and implement automation for system administration, infrastructure health checks, and reporting using scripts or appropriate tools.3. Candidate RequirementsMandatory RequirementsBachelor’s degree in Information Technology, Computer Science, or a related field.At least 5 years of experience in system infrastructure administration, with hands-on experience operating production environments with high availability requirements.Strong hands-on expertise in Windows Server, Linux, enterprise virtualization platforms, and core infrastructure services such as Active Directory and DNS.Practical experience managing SAN/NAS storage, backup and restore systems, and implementing or operating HA/DR solutions.Ability to monitor and analyze CPU, memory, disk I/O, and storage latency performance metrics, and identify system bottlenecks.Strong troubleshooting and independent incident resolution skills, including root cause analysis (RCA), change planning, and rollback planning.Proficiency in PowerShell, Bash, or equivalent scripting tools for administrative task automation.Ability to read and understand technical documentation in English and communicate technical issues effectively with vendors.Preferred QualificationsExperience in banking, financial services, or other mission-critical environments requiring 24/7 operations.Experience implementing or migrating data centers (DC/DR), or upgrading infrastructure supporting critical database systems and applications.Knowledge of infrastructure requirements for Oracle RAC/ASM, storage mechanisms, and coordination of database backup procedures.Experience with Microsoft 365, Microsoft Entra ID, Intune, and hybrid infrastructure environments.Relevant professional certifications in Linux, Microsoft technologies, virtualization platforms, storage/backup solutions, or ITIL.