Network Administrator

Network Administrator

(Permanent: Menlyn Maine, Pretoria)

About the Role

Responsible for managing a core network infrastructure environment. Day-to-day administration of firewalls, routers and switches, installation, securing, repair/troubleshooting, and maintenance of LAN, WAN and Cloud environments, as well as overseeing data and network security implementation. maintaining network performance through monitoring, analysis, and performance tuning. Providing technical support, managing user access, and overseeing Data Centre operations.

What Were Looking For

• Ability to perform duties under tight deadlines
• Strong knowledge and experience of Cisco firewall, router and switch technologies
• Strong knowledge and experience of Fortinet firewall technologies
• Strong knowledge and experience of Arista switch technologies
• Strong knowledge of Windows operating system
• Knowledge of Cloud networking and interoperability with LAN.
• Knowledge of Windows interoperability with LAN.
• Knowledge of Security patch maintenance process on LAN environments
• Good communication and interpersonal skills
• Hands-on approach
• Ability to manage SLAs with service providers
• Willing to work overtime
• Willing to do standby
• Travel nationally
• Must be self-learning
• Able to work independently

Experience: (Specific Relevant Fulltime experience in above Technologies)

• Network Administrator with at least 5 Years Experience in Implementing, maintaining and optimizing Lan and Wan secure network infrastructure.
• Knowledge of Security, Patch maintenance process on LAN environments:
• VLANs, switch access, IDS, IPS
• Network monitoring – NETFLOW, SNMP, IPSLA.
• Excellent understanding of Service Provider and Enterprise Architecture:
• Experience implementing QoS, VPN, MPLS, SD-WAN.
• Configuration of OSPF, ISIS, BGP, MPLS, TE protocols
• Routing protocols RIP, OSPF, EIGRP, BGP, IS-IS, MP-BGP, MPLS, TE protocols.
• LAN Technologies – VLANS, STP, VTP, Port Security, PBR (Policy Based Routing)
• VPN: GRE / IPSec / DMVPN / MPLS / VRFs/ LDP/RSVP-TE/ L2 VPNs
• Cloud network setup and management

Qualifications

• Matric or equivalent qualification recognised by the Department of Higher Education & Training
• Comptia Network+ certification
• National diploma or degree in relevant field will be an advantage
• Any network qualification (i.e. CCNA, CCNP, Arista ACE, Fortinet) would be an advantage

Daily Tasks

• Establish network specifications by conferring with users, analysing workflow, access, information, and security requirements
• Day to day administration of Cisco, Fortinet firewalls, switches and routers, including interface configuration and routing protocols
• Day to day administration of Cloud network infrastructure, load balancers, routing and NSG rules, firewalls, including interface configuration and peering.
• Evaluating network performance issues including availability, utilization, throughput, and latency
• Planning and executing the selection, installation, configuration, and testing of equipment; defining network policies and procedures
• Adheres to organisations policies, procedures, and documentation requirements (i.e. Change Control, etc.).
• Establishing connections and updating firewall access list
• Maintain network performance by performing network monitoring and analysis, and performance tuning; troubleshooting network problems; escalating problems to vendor
• Upgrades network by conferring with vendors; developing, testing, evaluating and installing enhancements
• Maintain organisation data flow and network diagrams
• Maintain asset registers of all network equipment, manage warranty and support SLAs with suppliers
• Assist with and oversees the management of user access and maintaining related records
• Secures network by developing network access, monitoring, control, and evaluation, maintaining documentation
• Assist with and oversees the Data Centre operations and environment
• Providing technical support to employees and 3rd parties
• Assists with the Administration of systems and servers related to LAN and WAN (e.g. email systems, accounts, workstation ID, IP assignments, VOIP, network, security, antivirus, spyware, etc.) for the purpose of ensuring availability of services to authorized users
• Assists in overseeing the organisation and operation of the Network Operations Centre (e.g. monitoring temperature, organising materials, ensuring availability of materials, etc.) for the purpose of ensuring efficient operations
• Assist with the installation of client and server software on a variety of platforms (e.g. service packs, application software, operating software, hardware upgrades, etc.) for the purpose of upgrading and maintaining business productivity
• Assist with the maintenance of network operations and software applications (e.g. servers, print, application, WEB, database, proxy, etc.) operating systems, server backups, routine maintenance programs, etc.) for the purpose of ensuring efficient operations
• Manage project migrations for hardware/software systems for the purpose of ensuring efficient operations
• Research trends, products, equipment, tests, etc. for the purpose of recommending procedures and/or purchases
• Adhere to compliance standards and reporting requirements (PCI, NIST)

Personal Attributes

• Strong administrative, analytical, and communication skills.
• Good stress and time management.
• Target-oriented, decision-making, and problem-solving skills.
• Attention to detail, focus, dedication, and ethics.
• Responsible and Accountable.

Interpersonal Relationships

• Executives
• Network Administrators
• Systems Administrators
• Database Administrators
• Developers
• End Users
• Organization clients