IT Infrastructure Systems Administrator

About the role

Digicel, a digital connectivity and communications provider serving nine million customers across the Caribbean, Central and South America, is hiring an IT Infrastructure Systems Administrator. The role covers the full lifecycle of infrastructure services: provisioning, managing, monitoring and decommissioning, in an in-house or hosted environment.

Key responsibilities

• Install, configure and administer Unix/Linux servers (Solaris 10/11, Red Hat Linux 5/6/7, Oracle Linux 6/7)
• Manage virtual environments (VMware, Oracle Virtual Machine), build, patch, monitor and troubleshoot VMs, and take snapshots
• Administer SAN storage (HPE 3PAR, Dell Compellent), tune volumes, zone SAN Fibre Channel and monitor capacity
• Configure backup policies and snapshots to HPE StoreOnce and tape libraries, and test them regularly
• Manage LAN and WLAN, upgrade and patch routers and switches, and address open security incidents
• Perform daily proactive health checks, take part in disaster recovery planning and restore data using SAN snapshots and replication
• Monitor performance and capacity issues on servers, virtual machines, storage and switches
• Troubleshoot hardware on physical servers, SAN storage, VM hosts and switches/routers, and raise vendor support tickets
• Handle day-to-day user requests through a Service Desk ticketing system within SLAs

Required profile

• B.Sc. in Computer Science or a related discipline
• At least five years of hands-on Unix/Linux experience, including Solaris and Red Hat systems administration
• Red Hat Certified Engineer (RHCE) certification is a plus
• Experience in the mobile telecommunications sector is an asset

Required skills

• Strong command-line system administration (Linux/Unix or Windows), including IP tables
• VMware and Oracle Virtual Machine; Hyper-V is a plus
• OS patching for Red Hat and Solaris, and system hardening to security benchmarks
• Networking: TCP/IP, DNS, NFS, LDAP, FTP, SSH, SMTP, SSL, HTTP, Active Directory, firewalls
• Shell and/or Perl scripting
• SAN provisioning on HPE and Dell storage, Brocade Fibre Channel switches, Symantec NetBackup
• Disaster recovery and business continuity on UNIX, and documentation of configurations and processes