Network Infrastructure Specialist

1 week ago

Centurion, Gauteng, South Africa Network Recruitment Full time
Job Title: Systems / Networks Administrator (Ops Specialist)

Join Network Recruitment in Centurion and take on the role of Systems / Networks Administrator (Ops Specialist). As a key member of our IT team, you will be responsible for managing and maintaining our network infrastructure, ensuring optimal performance and security.

Key Responsibilities:
  • Manage and maintain network infrastructure, including servers, switches, and routers.
  • Implement and enforce network security policies and procedures.
  • Monitor and troubleshoot network performance issues.
  • Collaborate with data architects and IT specialists to design and implement data networks.
  • Provide technical support and training to team members.
Requirements:
  • Extensive experience in technical management, preferably within a related industry.
  • In-depth knowledge of IT infrastructure and innovation.
  • Proven ability to lead IT support teams.
  • Proficient in database queries and design principles.
  • Skilled in collaborating with data architects and IT specialists.
Preferred Qualifications:
  • Certifications such as A+ & N+, MTCNA, ICND1, UBWA, Linux+/LPIC1, Server+, MCSA: Windows Server 2016 or their closest equivalents.
  • Familiarity with ITIL and AGILE methodologies.
Key Performance Areas (KPAs):Linux Systems Administration:
  • Expert in administering Debian-based (Ubuntu) and RedHat-based (Alma, Rocky) distributions.
  • Skilled in provisioning/configuring servers, clusters, and devices via CLI.
  • Installing and configuring Line-of-Business (LOB) apps using YAML/JSON.
  • Monitoring/troubleshooting system performance and logs.
Windows Systems Administration:
  • Managing Windows servers (AD/LDAP, DHCP, DNS, NPS, IIS, Hyper-V).
  • Familiar with IIS modules (Dot Net, ASP, WebSockets).
  • Providing desktop support and managing file servers.
  • Responsible for server maintenance and administration.
Networking:
  • Experience with Core/Distribution/Access-switching (Edgecore, MikroTik, UniFi, D-Link).
  • Managing VLANs, tunneling (ZeroTier, WireGuard), iptables/nftables, firewalld, and bonding.
  • Configuring/troubleshooting FortiGate, MikroTik, pfSense.
  • Knowledge of monitoring tools (Zabbix, Nagios, Data Dog, New Relic).
  • IPAM/DCIM expertise.
Database Support:
  • Basic support for Postgres, Oracle, MariaDB (backups, restores, minor SQL queries).
  • OracleDB knowledge (Oracle Data Pump, TNS Listener troubleshooting).
  • Collaborating with DBAs for performance and availability.
Server Hardware & Storage Administration:
  • Managing SAN, NAS, DAS, LVM, LUN infrastructures (HPE SAN, Synology, FreeNAS).
  • Expertise in HBA bonding, SCSI, storage optimization.
  • Server assembly/upgrades, RAID, and HA configurations.
  • Familiar with Veeam Backup, Quest NetVault, LTO-tape technology.
Virtualization & Cluster Management:
  • Administering Xen-based clusters (XCP/Xen) and Hyper-V.
  • Managing virtual environments, performance, failover, storage integration.
  • Experience with Hyper-V clusters, VMware vSphere, Docker, Kubernetes.
Office Admin & Soft Skills:
  • Implementing ITIL best practices (ITSM) and IT asset management (ITAM).
  • Familiar with JIRA, Confluence, supplier negotiation, and warranties.
  • Collaborating with Finance and Audit teams.
  • Strong communication, troubleshooting, and documentation skills.

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