Senior Systems Specialist

Dicetek LLC; Dubai; On-site; AED 300,000 - 480,000; Full time

Job summary

Dicetek LLC is seeking a Senior Systems Specialist to design, administer, and optimize our enterprise infrastructure across virtualization, Windows, Linux, storage, and data center environments. The role emphasizes secure, resilient systems with documented processes and alignment to business continuity and performance needs.

The candidate will lead VMware design and operations, Windows and AD administration, storage management, backup/recovery, and data center activities, ensuring scalable and

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Computer Engineering, or a related discipline.
• Minimum 7 years of progressive experience in systems administration, infrastructure operations, virtualization, storage, backup, or data center services, including at least 2 years in a senior technical role.
• Experience supporting highly available, business‑critical enterprise environments and participating in planned maintenance and on‑call support.

Responsibilities

• Design, administer, and continuously improve enterprise infrastructure across virtualization, Windows and Linux platforms, storage, backups, and data center environments.
• Implement VMware ESXi hosts, vCenter Server clusters, HA, DR, vMotion, and virtual networking; manage VM lifecycles and templates.
• Administer Windows Server environments (patching, hardening, monitoring) and Active Directory services including DNS, DHCP, and Group Policy.
• Manage enterprise storage (SAN/NAS), replication, LUN provisioning, zoning, multipathing, and capacity planning; coordinate with storage vendors.
• Maintain backup/recovery platforms and DR plans with RPO/RTO targets; perform regular restore tests.

Skills

VMware vSphere

Windows Server

Active Directory

Education

Bachelor's degree in Computer Science/IT/CE or related

Tools

Veeam

Commvault

Veritas NetBackup

Dell PowerProtect

Job description

The Senior Systems Specialist is responsible for the design administration operation and continuous improvement of enterprise infrastructure across virtualization Windows and Linux platforms directory and network services storage backup server hardware and data center environments The role ensures that infrastructure services are secure resilient scalable well documented and aligned with business continuity availability and performance requirements Virtualization Compute Design implement administer and optimize VMware environments including ESXi hosts vCenter Server clusters High Availability Distributed Resource Scheduler vMotion virtual networking templates snapshots and virtual machine lifecycle management Windows Infrastructure Install configure patch harden monitor and troubleshoot Windows Server operating systems across production disaster recovery testing and development environments Identity Core Services Administer Active Directory Domain Services including forests domains organizational units users groups service accounts delegation replication trusts and domain controller health DNS DHCP Group Policy Configure maintain and troubleshoot DNS zones and records DHCP scopes and reservations IP address allocation and Group Policy Objects including security baselines and controlled policy deployment Linux Red Hat Platforms Support Red Hat Virtualization and Linux operating systems including installation configuration patching services permissions file systems performance monitoring and incident resolution Storage Management Administer enterprise SAN NAS block file and object storage where applicable Perform LUN and volume provisioning zoning coordination RAID configuration review multipathing capacity forecasting performance analysis replication and storage lifecycle management Backup Recovery Operate and maintain enterprise backup solutions define and monitor backup policies retention replication encryption and recovery jobs perform regular restore tests and ensure alignment with approved RPO and RTO targets Data Center Management Coordinate rack-and-stack activities cabling labeling asset placement power and cooling requirements environmental monitoring access controls capacity utilization equipment movement and coordination with facilities and service providers Hardware Specifications Review and validate server and storage hardware specifications including CPU architecture and sizing memory configuration disks and SSDs RAID controllers HBAs NICs GPUs where applicable power supplies firmware supportability compatibility matrices and vendor lifecycle status Operations Support Monitor infrastructure health availability utilization capacity and performance provide Level 3 technical support lead root cause analysis and implement permanent corrective and preventive actions Lifecycle Security Compliance Plan and execute upgrades patching firmware updates vulnerability remediation configuration hardening certificate renewal and end-of-life or end-of-support replacement activities Documentation Collaboration Maintain architecture diagrams build documents standard operating procedures recovery procedures configuration records asset inventories and operational reports Collaborate with network cybersecurity cloud application database and vendor teams

Required Technical Competencies

• Advanced hands‑on experience with VMware vSphere, ESXi, vCenter Server, clustering, HA, DRS, vMotion, virtual networking, and capacity management.
• Strong expertise in Windows Server administration, troubleshooting, performance tuning, patching, and security hardening.
• Deep knowledge of Active Directory, DNS, DHCP, Group Policy, authentication, permissions, replication, and enterprise identity services.
• Strong understanding of enterprise storage technologies, including SAN/NAS, Fibre Channel or iSCSI, RAID, LUNs, zoning concepts, multipathing, snapshots, replication, and capacity planning.
• Hands‑on experience with enterprise backup and recovery platforms such as Veeam, Commvault, Veritas NetBackup, Dell PowerProtect, or equivalent.
• Working knowledge of Red Hat Virtualization and Linux administration, including command‑line operations, services, networking, storage, permissions, and patching.
• Practical knowledge of data center operations, server deployment, structured cabling, power, cooling, environmental controls, physical security, and asset management.
• Ability to interpret and validate technical specifications, solution designs, bills of materials, compatibility matrices, vendor quotations, and support requirements.
• Experience with monitoring, alerting, logging, service management, change management, incident management, problem management, and disaster recovery processes.
• Understanding of infrastructure security controls, vulnerability remediation, privileged access, backup security, segmentation, and audit requirements.

Qualifications & Experience

• Bachelor's degree in Computer Science, Information Technology, Computer Engineering, or a related discipline; equivalent professional experience may be considered.
• Minimum 7 years of progressive experience in systems administration, infrastructure operations, virtualization, storage, backup, or data center services, including at least 2 years in a senior technical role.
• Demonstrated experience supporting highly available, business‑critical enterprise environments and participating in planned maintenance and on‑call support when required.
• Experience in government, regulated, cloud, or large‑scale data center environments is an advantage.

Skills

• VMware vSphere
• Windows Server
• Active Directory