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Network Administrator

3 months ago

Johannesburg, South Africa Recru-it Full time
Position: Network Administrator
Type: Permanent
Location: Benoni


Job Summary
  • Secure and maintain the organisations computer systems network
  • Maintain a reliable, secure and efficient data communications network

Key Performance Areas
  • Plan and Set Up Network Infrastructure
  • Maintain High Availability Network Infrastructure
  • Conduct Research on Latest Networking Practices
  • Perform General Administrative Functions

Key Tasks (By KPA for clarity)
  • Plan and Set Up Network Infrastructure
  • Specify network requirements and design solutions
  • Implement, configure and maintain LAN
  • Implement, configure and maintain WAN
  • Assist System Administrators
  • Plan and report on network capacity within the company
  • Negotiate and provide reciprocal network support and access between the company and third party vendors

Maintain High Availability Network Infrastructure
  • Set up user accounts, permissions and passwords
  • Install and configure network equipment to update/fix hardware/software issues
  • Install and integrate new server hardware and applications
  • Support and administer third-party applications (Network and Firewall applications)
  • Maintain computer networks and systems including software, Virtual hosts, VPNs, routers and other physical hardware
  • Tune network performance
  • Check for and respond to network security and connectivity alerts and incidents
  • Monitor network performance (availability, utilization, throughput and latency) and test for weaknesses
  • Update virus protection software to keep data and communications protected
  • Diagnose and identify root causes of network and security issues.
  • Research and resolve network performance issues in a timely manner
  • Provide accurate solutions to problems escalated from the 1st line support team
  • Provide remote infrastructure support/troubleshooting within agreed SLAs
  • Monitor and respond to new capacity threshold alerts

Conduct Research on Latest Networking Practices
  • Identify and review appropriate software updates, patches and firmware releases
  • Research and make network recommendations on server system operations
  • Research and review networking best practices and applications

Perform General Administrative Functions
  • Define network policies and procedures
  • Communicate networking issues to other IT Teams, Supervisors and management
  • Resolve software and hardware configuration issues for users
  • Track systems end of life and specify replacements when needed.
  • Document existing systems and formulate comprehensive plans for the implementation of new systems
  • Establish and maintain a good working relationship with customers
  • Undertake Extraneous-to-IT Activities

Other requirements
  • Undertake cross-functional tasks for, and provide assistance to, System Administrators
  • Liaise with third party providers in a professional manner.
  • Undertake UPS operational/functionality checks per prescribed checklist(s)
  • Check that OEM UPS suppliers maintenance regimes are completed per SLA
  • Process "first point of contact" calls for UPS and systems issues and/or failures
  • Retrieve camera footage for managers/supervisors review
  • Monitor and maintain camera hardware and cabling
  • Occasional night-time driving and working

Physical activities
  • Must be able to carry heavy loads (minimum 20 Kg)
  • Working at heights and in confined spaces
  • Exposed to sharp and jagged finishes to infrastructure and equipment

When the job will be performed
  • Typically, during standard working hours (Monday to Friday 08:00 17:00)
  • Occasional after hours call outs (including weekends and public holidays)
  • Scheduled standby and call out shifts

Where the job will be performed
  • Predominantly Benoni based
  • When required data centres and other sites

Essential Qualifications (Have-to-Have)
  • Matric
  • A+ Certificate
  • N+ Certificate
  • Linux LPIC-1
  • OR
  • An equivalent certification at NQF Level 7 (e.g. Cisco Certified Network Associate (CCNA), Aruba Certified Switching Associate (ACSA), Fortigate)

Desirable Qualifications (Nice-to-Have)
  • MCSE
  • MCIPT
  • Fortigate NSE 4

Essential Experience (Have-to-Have)
  • Proven experience in a network administrator role
  • Verifiable experience in the design and implementation of routing and switching in large-scale, multi-vendor networks (Aruba, Cisco).
  • Direct experience in Network Security (e.g. Sophos, Fortigate)
  • Applied experience with Aruba routing and switches
  • Practical experience with wireless networks
  • Relevant experience with firewalls, Internet VPNs remote implementation, troubleshooting, and problem resolution

Desirable Experience (Nice-to-Have)
  • Hands on experience in Windows server 2019-2016, hyper v, Designing and Implementing a Server
  • Practicable experience with Infrastructure, Linux Server, Microsoft Systems
  • Working experience with VMware

Knowledge and Skills
  • Solid familiarity with backup and recovery software and methodologies
  • Intense knowledge of internet protocols, services and standards.
  • Solid understanding of network automation, telemetry, and SDN (Software Defined Networking)
  • Knowledgeable in network security standards, best practices, and implementation of them to operating procedures and configurations.
  • Strong understanding of physical cabling
  • Practicable knowledge of best practices around management, control, and monitoring of server infrastructure
  • Exceptional written and verbal communication skills
  • Excellent problem solving skills
  • Exceptional organising skills
  • Ability to diagnose and resolve product, hardware and performance issues independently
  • Ability to set up and configure server hardware
  • Strong scripting skills
  • Robust ability to configure and maintain networking stacks.

Attributes (Keep short and relevant Max 5)
  • Attention to detail/accuracy.
  • Able to work in a team and independently.
  • Deadline conscious.
  • Calm under pressure.
  • Responsible and accountable.
  • Self-motivated.
  • Honest, Hardworking and Humble

Assets Controlled.
  • What level and value of ASSETS does this role control?
  • All Network Assets at Data Centres, Server Rooms and in transport under business insurance.