Gauteng: Network Administrator posted by Recruit-It

• Secure and maintain the organisation’s 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 – which include documentation and diagrams

 
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 with required network configs
• Plan and report on network capacity within the company
• Negotiate and provide reciprocal network support and access between the company and third-party vendors
• Risk Mitigation Tasks and Contribution, Knowledge sharing within the team, monitor network traffic and update the incident response plan.

 
Maintain High Availability Network Infrastructure

• Set up user accounts, permissions and passwords on AD
• 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 according to changes within the business requirements
• 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 system’s 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

 
Other requirements

• Undertake cross-functional tasks for, and provide assistance to System Administrators
• Liaise with third party providers in a professional manner.
• Advise Maintenance team for UPS and systems issues and/or failures
• Retrieve camera footage for managers’/supervisors’ review.
• 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

 
 
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 the company data centres and other company 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
• JNCIA
• FortiGate NSE 4

 
Legal or Statutory Requirements

• None

 
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, Juniper)
• Direct experience in Network Security (e.g., Juniper, FortiGate)
• Applied experience with Aruba, Juniper routing and switching.
• Practical experience with wireless networks, Unifi
• Relevant experience with firewalls, Internet VPNs remote implementation, troubleshooting, and problem resolution
• Applied experience with Sentinel One and Gytpol

 
Desirable Experience (Nice-to-Have)

• Hands on experience in Windows server 2016-2019, Designing and Implementing a Server
• Practicable experience with Infrastructure, Linux Server, Microsoft Systems
• Working experience with VMware ESXI

 
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 types and functions
• 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

• Attention to detail/accuracy
• Able to work in a team and independently.
• Deadline conscious
• Calm under pressure
• Responsible and accountable
• Self-motivated
• Flexible
• Honest, Hardworking and Humble