Senior Microsoft Windows and Vmware Vsphere Administrator  Lagos

Vagan Oil & Gas Limited is a Nigerian Private Limited liability Company registered under the Companies Acts of 1990, In line with the policies of the Nigerian service provision. The company core area of operation is to provide a broad spectrum of services ranging from Engineering, Pipeline & Flowline Construction / Repairs, Facility piping and maintenance, Wellhead & Christmas tree maintenance and servicing, Composite wrap technology, Equipment & Offshore/Marine Supplies etc We are  recruiting to fill the position below:

 Job Title: Senior Microsoft Windows and Vmware Vsphere Administrator

Location: Lagos Job Summary

We are seeking a highly skilled and experienced Senior Microsoft Windows and VMware vSphere Administrator to join our Infrastructure and Operations team. The successful candidate will be responsible for the design, implementation, administration, optimization, and support of enterprise Microsoft Windows Server environments and VMware virtualization platforms. This role requires deep technical expertise in Windows Server technologies, VMware vSphere, Active Directory Services, virtualization, storage, backup and disaster recovery, cloud integration, and infrastructure security. The successful candidate will also play a key role in supporting infrastructure projects, application implementations, and digital transformation initiatives across the enterprise. The ideal candidate will possess excellent troubleshooting skills, strong infrastructure design experience, and the ability to provide technical leadership in large-scale enterprise environments supporting business-critical applications and services.

Windows Server Administration. Design, deploy, administer, and support Microsoft Windows Server  environments. Manage enterprise Active Directory infrastructure, including Domain Controllers, Group Policies, DNS, DHCP, and Federation Services. Administer Microsoft Windows Server 2016, 2019, 2022, and future releases. Perform server patching, upgrades, security hardening, and lifecycle management. Implement and maintain Windows security policies and compliance standards. Monitor and optimize system performance, availability, and reliability. Manage Windows Failover Clustering and High Availability solutions. Troubleshoot and resolve complex Windows infrastructure issues. VMware vSphere Administration Design, deploy, administer, and maintain VMware environments including:

VMware ESXi VMware vCenter Server VMware Clusters VMware Distributed Switches Resource Pools VMware HA VMware DRS VMware vMotion VMware Storage vMotion

Provision, optimize, migrate, and decommission virtual machines. Perform virtualization capacity planning and performance optimization. Ensure high availability and resilience of virtualization platforms. Cloud and Hybrid Infrastructure Support hybrid infrastructure solutions integrating on-premises systems with Microsoft Azure. Manage Azure virtual machines, storage, and identity services. Support cloud migration and modernization initiatives. Implement cloud governance, security, and operational best practices. Infrastructure Security and Compliance Implementserver and virtualization security baselines. Remediate infrastructure vulnerabilities and security findings. Support Identity and Access Management (IAM) initiatives. Collaborate with Cyber Security teams to strengthen infrastructure security. Ensure compliance with corporate IT, audit, and regulatory requirements. Monitoring a n d Performance Management Administer infrastructure monitoring and alerting platforms. Proactively monitor infrastructure health and system availability. Perform root cause analysis for major incidents. Identify and implement performance improvements. Support problem management and continuous service improvement initiatives. Automation and Process Improvement Develop automation solutions using:

PowerShell VMware PowerCLI Infrastructure management tools

Standardize operational procedures and deployment activities. Improve operational efficiency through automation and orchestration. Project Delivery s Application Implementation Support Serve as the technical infrastructure leads for IT projects involving new business applications, platforms, and services. Collaborate with project managers, application owners, vendors, solution architects, and business stakeholders to define infrastructure requirements. Design, build, provision, and configure Windows and VMware infrastructure to support application deployments and upgrades. Participate in infrastructure architecture reviews, technical design workshops, and project planning sessions. Perform infrastructure sizing, capacity planning, and performance assessments for new and existing applications. Support application deployment activities across Development, Test, SIT, UAT, Pre-Production, and Production environments. Provide technical support during application testing, migration activities, and golive events. Ensure new solutions meet infrastructure, security, backup, disaster recovery, and operational support requirements. Coordinate infrastructure changes related to application releases, upgrades, migrations, and decommissioning activities. Work closely with Network, Security, Database, Cloud, and Application Support teams to ensure successful project execution. Develop implementation documentation, infrastructure build guides, and operational handover procedures. Support infrastructure transformation projects including:

Data Centre migrations Cloud migration initiatives Operating System upgrades Virtualization modernization projects Infrastructure refresh programs

Participate in project governance meetings and provide technical status updates, risk mitigation plans, and implementation recommendations. Leadership s Stakeholder Management Provide technical leadership and mentoring to junior administrators and engineers. Collaborate with cross-functional IT teams and external vendors. Produce and maintain technical documentation, procedures, and operational runbooks. Support audits, compliance reviews, and management reporting requirements. Act as an escalation point for complex infrastructure and virtualization issues.

Success Measures

Maintain infrastructure availability exceeding 99.9%. Deliver timely resolution of infrastructure incidents and problems. Successfully support project and application implementation activities. Maintain secure, compliant, and resilient Windows and VMware environments. Reduce manual operational effort through automation initiatives. Support cloud transformation and infrastructure modernization programs. Deliver reliable infrastructure services aligned with business objectives and IT strategy.

Required Qualifications

Bachelor’s Degree in Computer Science, Information Technology, Engineering, or a related discipline. Master's Degree is an added advantage.

Minimum of 8 years of experience managing enterprise Microsoft Windows Server environments. Minimum of 5 years of hands-on VMware vSphere administration experience. Experience supporting mission-critical data centre infrastructure. Experience supporting enterprise application implementations and upgrades. Experience working in large enterprise or multinational organizations.

Microsoft Technologies Windows Server 2016/2019/2022 Active Directory Entra ID (Azure Active Directory) DNS DHCP Group Policy Windows Failover Clustering PowerShell Microsoft Azure VMware Technologies VMware vSphere VMware ESXi VMware vCenter VMware HA VMware DRS VMware Lifecycle Manager VMware vMotion VMware Storage vMotion VMware vSAN (Preferred) Storage and Backup Commvault SAN/NAS Technologies NetApp Storage Monitoring and Security Infrastructure Monitoring Tools Microsoft Defender Vulnerability Management Platforms SIEM Integration Security Hardening and Compliance Controls.

Enterprise Infrastructure Administration. Virtualization C Cloud Technologies. Infrastructure Architecture C Design. High Availability C Disaster Recovery. Advanced Troubleshooting C Root Cause Analysis. Project Delivery C Application Enablement. Technical Leadership C Mentoring. Stakeholder C Vendor Management. Strong Communication C Documentation Skills. Customer C Service-Oriented Mindset. Continuous Improvement C Automation.

Not Specified. How to Apply

Interested and qualified candidates should send their Applications to: [Email hidden - Login to reveal] using the  Job Title as the subject of the email.