IT Infrastructure Systems Administrator

About Digicel

Digicel is a leading digital connectivity and communications provider, delivering modern wireless and fibre networks across 25 markets in the Caribbean, Central and South America. Serving nine million customers through mobile, home, and business solutions, we play a critical role in enabling economic participation and digital inclusion in the region. Our commitment to strong governance, inclusive access, and long-term value creation is embedded in how we operate every day. Backed by our DIGI values - Diversity, Integrity, Growth, and Innovation - our 5,000 employees are focused on driving impact for the customers, communities, and countries we serve.

Visit www.digicelgroup.com for more.

Job Title: IT Infrastructure Systems Administrator

Primary objective of the job: 

The IT Infrastructure Systems Administrator role uses the skills required of a Systems Administrator in an in-house or hosted environment, as well as a working knowledge of the skills required to provision, manage, monitor and decommission infrastructure services.

Main Duties and Responsibilities:

• Unix/Linux Servers – installation, configuration, administration of Unix/Linux servers. In-house operating systems include Solaris 10/11, Redhat Linux 5/6/7, Oracle Linux 6/7.
• Virtual Environment - installation, configuration and administration of virtual environments. Build, patch, monitor and troubleshoot virtual machines. Perform snapshots of all machines, this includes, but is not limited to VMWare and Oracle Virtual Machine environments.
• SAN Storage – administration and support of SAN technologies. Assess storage performance, tuning of volumes, storage provisioning, SAN fiber channel zoning and monitoring capacity/utilization. SAN technologies include, HPE 3PAR and Dell Compellent.
• Backups – configure backup policies and snapshots for all Unix/Linux servers to HPE StoreOnce and to a tape library. Perform regular tests of backups and snapshots.
• Network – management of LAN and WLAN. Analyze problems and define solutions for network issues. Upgrade and patch routers/switches.
• Security - address open incidents and vulnerabilities on systems and/or network.
• Maintenance - perform daily pro-active systems administration and health checks to ensure server, storage and network availability to reduce risks of outages.
• Disaster Recovery - participate in disaster recovery planning and execution. Configure storage technologies to accomplish complete data recovery using SAN snapshots and SAN to SAN replication.
• Monitoring – use system tools to monitor and resolve performance problems on servers, virtual environments, SAN storage and switches. This includes capacity/utilization issues or contention issues which could drive up latency/response times.
• Hardware– troubleshoot hardware issues on physical servers, SAN storage, VM hosts/chassis and switches/routers. Raise support requests with external vendors/OEM and work with them until the issue is resolved and service is back to normal.
• Support – Handle day-to-day requests from users via a Service Desk ticketing system. Effectively manage assigned support requests and adhere to the SLA for each request.

Academic Qualifications and Experience Required:

• B.Sc. in Computer Science or related discipline
• A minimum of five (5) years of solid hands-on Unix/Linux experience that includes specific technical experience with Solaris / Red Hat systems administration support
• Red Hat Certified Engineer (RHCE) certification is a plus

Functional Skills:

• Strong understanding of VMware and Oracle Virtual Machine virtualization platforms, experience in installing, configuring and building Virtual servers in both environments. Experience with Hyper-V will be a plus
• Working knowledge of in-house network, server and platform operating systems
• Working technical knowledge of current systems software, protocols, and standards, including firewalls, Active Directory, etc.
• Strong system administration (Linux/Unix or Windows) at the command-line level including IP tables.
• Red Hat Enterprise Linux 6 and 7 / Sun Solaris 10 and 11 server systems installation, configuration, optimization, security hardening and administration
• Experience with OS patch updates for Redhat and Solaris environments
• System level support for Oracle database servers, Java application servers and other large-scale databases in a UNIX environment
• Linux and Solaris Networking services and protocols: TCP/IP, DNS, NFS, LDAP, FTP, SSH, SMTP, SSL, HTTP
• Shell scripting and/or Perl scripting experience
• Strong knowledge of network administration
• Hands-on software and hardware troubleshooting experience
• Experience documenting and maintaining configuration and process information
• SAN based environment and ability to provision SAN resources on HPE and Dell storage
• Brocade Fiber Channel Switches for SAN Management
• Enterprise Symantec NetBackup Disk and Tape Based Infrastructure devices and deduplication
• Recovering the UNIX/Linux systems in the event of failures
• Disaster Recovery and Business Continuity operations on UNIX environment
• System configuration and hardening to meet security benchmarks
• Ability to work within strict deadlines and with a wide spectrum of people
• Experience in and with the mobile telecommunications sector would be considered an asset

DISCLAIMER:

This job description indicates the general nature and level of work expected of the incumbent.  It is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities required of the incumbent.  Incumbent may and probably will be asked to perform other duties as required.  Each employee, regardless of classification, is required to maintain a safe, orderly and clean workplace, using safety precautions and observing safety rules at all times.