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Senior Systems Administrator (Managed Enterprise) / Senior IT Support Engineer at Jireh Technologies Ltd
Jireh Technologies Ltd
September 08, 2026
Full-time
On-site
Role Summary
Provide full-stack managed services support for enterprise IT infrastructure, including servers, hybrid cloud, storage, databases, backups, security, and enterprise software platforms. This role requires managing a complex multi-vendor environment (HPE, Dell, Lenovo, Microsoft, Oracle, VMware) and delivering high-availability support through both on-site operations and escalation coordination with remote and base office support.
Key Skills & Competencies
Multi-vendor server hardware maintenance (HPE, Dell, Lenovo), VMware ESXi cluster management, BladeSystem configurations, and enterprise SAN/NAS provisioning.
Expertise in Windows Server (2016+), Active Directory, Red Hat Enterprise Linux, Oracle Linux, and UNIX platforms.
Proficiency in Microsoft Azure administration, M365 suite, hybrid AD identity synchronization, and cloud networking (VPN/ExpressRoute).
Operational knowledge of Oracle Database (11g+) and MS SQL Server (2016+), including tablespace management, schema structures, and basic tuning.
Experience with HP Data Protector, enterprise media management, ISO 27001 frameworks, vulnerability mitigation, and OS hardening.
Applied knowledge of ITIL Incident, Change, and Problem Management frameworks, along with root cause analysis (RCA) and performance tuning.
Core Responsibilities:
Administer ~100 Windows Server (2016+) Active Directory environments, RHEL/UNIX systems, and core network roles (DHCP, DNS, Hyper-V, GPO).
Maintain data center computer hardware (HPE, Dell, Lenovo, VMware ESXi) and 150TB+ SAN/NAS storage arrays (HPE Alletra/3PAR, NetApp, EMC).
Manage backup operations using HP Data Protector (v6+) and drive capacity planning.
Support Microsoft Azure resources and M365 services (Exchange Online, Teams, SharePoint, hybrid Azure AD sync).
Maintain Oracle (11g+) and MS SQL Server (2016+) databases and core enterprise applications (Forcepoint, Equitrac).
Execute patch management, software upgrades, OS hardening, and maintain ISO 27001 security compliance.
Deliver 24/7 proactive monitoring, incident management, and change control using an ITIL-aligned service desk.
Qualifications & Skills
Education: B.Sc/B.Engr./B.Tech/HND in Computer Science/Engineering, Software Engineering, Electrical and Electronics Engineering.
Experience: 5+ years supporting 24/7 enterprise data centers and hybrid environments.
Certifications: Microsoft (Azure/M365 Admin), VMware/OEM Hardware Certifications, Cisco (CCNA/CCNP) and ITIL Certification.
Provide full-stack managed services support for enterprise IT infrastructure, including servers, hybrid cloud, storage, databases, backups, security, and enterprise software platforms. This role requires managing a complex multi-vendor environment (HPE, Dell, Lenovo, Microsoft, Oracle, VMware) and delivering high-availability support through both on-site operations and escalation coordination with remote and base office support.
Key Skills & Competencies
Multi-vendor server hardware maintenance (HPE, Dell, Lenovo), VMware ESXi cluster management, BladeSystem configurations, and enterprise SAN/NAS provisioning.
Expertise in Windows Server (2016+), Active Directory, Red Hat Enterprise Linux, Oracle Linux, and UNIX platforms.
Proficiency in Microsoft Azure administration, M365 suite, hybrid AD identity synchronization, and cloud networking (VPN/ExpressRoute).
Operational knowledge of Oracle Database (11g+) and MS SQL Server (2016+), including tablespace management, schema structures, and basic tuning.
Experience with HP Data Protector, enterprise media management, ISO 27001 frameworks, vulnerability mitigation, and OS hardening.
Applied knowledge of ITIL Incident, Change, and Problem Management frameworks, along with root cause analysis (RCA) and performance tuning.
Core Responsibilities:
Administer ~100 Windows Server (2016+) Active Directory environments, RHEL/UNIX systems, and core network roles (DHCP, DNS, Hyper-V, GPO).
Maintain data center computer hardware (HPE, Dell, Lenovo, VMware ESXi) and 150TB+ SAN/NAS storage arrays (HPE Alletra/3PAR, NetApp, EMC).
Manage backup operations using HP Data Protector (v6+) and drive capacity planning.
Support Microsoft Azure resources and M365 services (Exchange Online, Teams, SharePoint, hybrid Azure AD sync).
Maintain Oracle (11g+) and MS SQL Server (2016+) databases and core enterprise applications (Forcepoint, Equitrac).
Execute patch management, software upgrades, OS hardening, and maintain ISO 27001 security compliance.
Deliver 24/7 proactive monitoring, incident management, and change control using an ITIL-aligned service desk.
Qualifications & Skills
Education: B.Sc/B.Engr./B.Tech/HND in Computer Science/Engineering, Software Engineering, Electrical and Electronics Engineering.
Experience: 5+ years supporting 24/7 enterprise data centers and hybrid environments.
Certifications: Microsoft (Azure/M365 Admin), VMware/OEM Hardware Certifications, Cisco (CCNA/CCNP) and ITIL Certification.