11 Network Administrator jobs in Johannesburg

Join to apply for the Network Administrator - benoni role at ExecutivePlacements.com - The JOB Portal

1 week ago Be among the first 25 applicants

Join to apply for the Network Administrator - benoni role at ExecutivePlacements.com - The JOB Portal

SUMMARY:

Secure and maintain the organisation’s computer systems network. Maintain a reliable, secure and efficient data communications network.

Recruiter:

Recru-it

Job Ref:

PE /Tabz

Date posted:

Tuesday, June 24, 2025

Location:

Johannesburg, South Africa

Salary:

1000 Annually

SUMMARY:

Secure and maintain the organisation’s computer systems network. Maintain a reliable, secure and efficient data communications network.

POSITION INFO:

Key Performance Areas

• Plan and Set Up Network Infrastructure
• Maintain High Availability Network Infrastructure
• Conduct Research on Latest Networking Practices
• Perform General Administrative Functions
• Undertake Extraneous-to-IT Activities.
  
  

• Specify network requirements and design solutions
• Implement, configure and maintain LAN
• Implement, configure and maintain WAN
• Define and allocate IP addresses
• Plan and report on network capacity within the company
• Negotiate and provide reciprocal network support and access between the company and third-party vendors
  
  

• 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
  
  

• 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
  
  

• 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
  
  

• Undertake Generator operational checks per prescribed checklist(s)
• Check that OEM generator suppliers’ maintenance regimes are completed per SLA
• 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 generator and systems issues and/or failures
• Retrieve camera footage for managers’/supervisors’ review
• Install and maintain camera hardware and cabling
• Conduct solar system operational checks
• Perform basic solar system maintenance (replace fuses, etc.)
• Trouble shoot and resolve office electrical issues
  
  

• Matric
• A+ Certificate
• N+ Certificate
• Linux LPIC-1
• BSc degree in Computer Science or related field,
• An equivalent certification at NQF Level 7 (e.g. Cisco Certified Network Associate (CCNA), Aruba Certified Switching Associate (ACSA), FortiGate)
• MCSE
• MCIPT
  
  

• Proven experience in a network administrator role
• Verifiable experience in the design and implementation of routing and switching 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
• Hands on experience in Windows server , hyper v, Designing and Implementing a Server
• Practicable experience with Infrastructure, Linux Server, Microsoft Systems
• Working experience with VMware.
  
  

• 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
  
  

• 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
  
  
  
  

• Seniority level Mid-Senior level

• Employment type Full-time

• Job function Information Technology
• Industries Advertising Services

Referrals increase your chances of interviewing at ExecutivePlacements.com - The JOB Portal by 2x

Get notified about new Network Administrator jobs in Johannesburg, Gauteng, South Africa .

Johannesburg, Gauteng, South Africa 1 week ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

Job Description:

Join Intelligent Technical Solutions, a dynamic and growing company, as our 
Network Administrator.

We're looking for a collaborative problem-solver with excellent customer service skills and a detail-oriented mindset. In this role, you'll be pivotal in providing remote IT support, ensuring our clients receive top-notch technical assistance. You'll handle a range of tasks, from system updates to hands-on troubleshooting, playing a critical role in maintaining our high standards of IT service.

Job Responsibilities:

This role is expected to be able to resolve the following technical issues with little or no assistance:

• Workstation operating system issues of any kind.
• Printer issues of any kind.
• Standard business application (Office, etc.) issues of any kind.
• Line-of-business application issues for common applications (SAGE ERP, QuickBooks), and for more niche applications with vendor assistance.
• Server issues of any kind.
• Networking issues of any kind.
• Escalation point for technicians

Job Qualifications:

• Experience with Windows and Mac OS troubleshooting.
• Experience with Server 2012 to 2022.
• Experience with VMWare and Hyper V Virtualization.
• Experience supporting M365 and Azure.
• Proficient in Firewall rules, VLAN configuration, access point support and administration, VPN tunnels,
• Minimum of five years experience in IT Support or a similar role.
• Advanced knowledge of Firewalls, Switches, Network architecture, and troubleshooting.
• Advanced understanding of managing, and troubleshooting networks.
• Advanced understanding of virtualized environments.
• Experience with Managed Service Providers (MSPs) is highly desirable.
• Active Network Certifications are preferred.

Job KPI's:

• First-touch closed: Each ticket that is completed with only one time entry contributes to this number
• Utilization: The percentage of time that you are on the clock and billing time to client tickets
• CSAT: Scores filled out by clients using the rating system in tickets

Job Requirements:

• A home office set up that meets the following:
• Computer: A working computer with a minimum of 8GB RAM and one of the following:
• Windows 11 with an Intel i5 or i7 (8th generation or newer), or
• AMD Ryzen 5 or series or newer), or
• macOS 12 or newer.
• Internet: Stable internet connection with at least 5 Mbps download and upload speeds.
• Audio Equipment: A quality headset with a noise-cancellation feature for meetings.
• Mobile Device: A smartphone capable of installing the Microsoft Authenticator app.
• Webcam: An HD webcam for video calls.
• 2nd Monitor

• UPS (Uninterruptible Power Supply) if using a desktop (Not needed if using a laptop)

• A very strong cultural fit the ITS way (Our core values will be discussed during the interview)

• Excellent command of the English language both spoken and written
• Able to work full time 40 hours a week - 
  8:00AM to 5:00PM, Pacific Standard Time (PST) from Monday to Friday.
• Able to pass our online behavior and cognitive assessments.
• Preferably have at least 2 of the following certifications: CompTIA A+, CompTIA Network+, CompTIA Security+, 3cx Basic Certified Engineer.
• Able to provide NBI Clearance (for PH applicants).

Compensation:

Pay rate starts at 
$18.89/hr

and vary by experience and location.

Benefits:

• Comprehensive Health Plans / HMO (Employee & Dependent/s)
• Life Insurance
• Flexible Benefit Reimbursement (Dental/Vision/Mental Health/Wellness/Government Contributions)
• Paid Time Off (starts at 15 days per year)
• Maternity/Paternity Leave
• Paid US Holiday
• Night Shift Bonus
• Salary Advancement/Loan
• Health & Wellness Program
• Company-paid training and certification

A leading cash management company based in Houghton is urgently looking for a Network Administrator to assist with support, maintenance, implementation, and optimisation of networks across the business operating systems, ensuring stable and secure connectivity across all network hardware, software, and communication links.

In order to be considered, the following is required:

• Degree in Computer Science, Management Information Systems, or related field
• Microsoft Office Suite
• Customer Service
• Practices and methods of systems administration and maintenance
• Scripting, Network Security
• Proficient at administering common network services
• Familiar with common programming languages
• Good written and verbal communication skills
• Computer networking and communication tools
• Knowledge of IT project management principles (e.g., Agile)
• Understanding of Software Development Life Cycle (SDLC)
• 3 years of experience as a Network Administrator for a medium to large enterprise with complex technology environments
• 1 year of experience in operating networks in the cloud, on-premises, and a hybrid environment
• 2 years of experience working with network and routing protocols, switch configuration/programming
• Operational knowledge of major server operating systems
• Operational knowledge of computer networking and cabling infrastructure
• Ability to troubleshoot and perform routine maintenance on servers, computers, and peripheral equipment

• Support Analysis and Design Activities
• Technical implementation in own area
• Quality Management
• Risk Management
• Customer Management
• Effective teamwork and self-management

If you would like to email your CV directly, please send it to or contact .

Please consider your application as unsuccessful if you have not received a response within 14 days of submitting your application. However, please keep a lookout on our website, , for available positions which you may be suited for.

Plus Medical Aid, Pension, Risk Benefits, Disability, Funeral Cover, 13th Cheque for non-management roles.

Join to apply for the Network Security Analyst role at Optimal Growth Technologies

Join to apply for the Network Security Analyst role at Optimal Growth Technologies

Get AI-powered advice on this job and more exclusive features.

Network Security Analyst (Remote South Africa)

Level: Intermediate

About The Role

Were looking for a highly skilled Network Security Analyst to join our forward-thinking, security-driven team. In this role, you'll be the guardian of our digital infrastructure ensuring that firewalls, network rules, and security configurations are robust, compliant, and ready to face emerging threats.

Key Responsibilities

• Manage and resolve firewall-related tickets efficiently.
• Add, modify, and optimize firewall rules in line with security best practices.
• Configure Palo Alto firewalls confidently and effectively.
• Implement secure changes without disrupting business operations.
• Monitor and analyze security systems to proactively prevent breaches.
  
  
  

• Palo Alto Certification (essential).
• Proven experience managing and configuring Palo Alto firewalls.
• Strong understanding of firewall rule creation and security change management.
• Familiarity with common security protocols and network monitoring tools.
• Excellent troubleshooting and analytical skills.
  
  
  

• Experience working with Checkpoint firewalls.
• Exposure to other enterprise security solutions.
  
  
  

• 100% remote work operate from anywhere in South Africa.
• Competitive salary aligned with experience.
• Join a dynamic, security-focused team with cutting-edge tools and projects.
  

• Seniority level Not Applicable

• Employment type Contract

• Job function Information Technology
• Industries IT Services and IT Consulting

Referrals increase your chances of interviewing at Optimal Growth Technologies by 2x

Get notified about new Network Security Analyst jobs in Johannesburg, Gauteng, South Africa .

Johannesburg, Gauteng, South Africa 1 day ago

Johannesburg, Gauteng, South Africa 2 days ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

• Manage and resolve firewall-related tickets efficiently.
• Add, modify, and optimize firewall rules in line with security best practices.
• Configure Palo Alto firewalls confidently and effectively.
• Implement secure changes without disrupting business operations.
• Monitor and analyze security systems to proactively prevent breaches.
  
  
  

• Palo Alto Certification (essential).
• Proven experience managing and configuring Palo Alto firewalls.
• Strong understanding of firewall rule creation and security change management.
• Familiarity with common security protocols and network monitoring tools.
• Excellent troubleshooting and analytical skills.
  
  
  

• Experience working with Checkpoint firewalls.
• Exposure to other enterprise security solutions.
  
  
  

• 100% remote work operate from anywhere in South Africa.
• Competitive salary aligned with experience.
• Join a dynamic, security-focused team with cutting-edge tools and projects.
  

Join to apply for the Network Security Engineer role at Impronics Technologies

Join to apply for the Network Security Engineer role at Impronics Technologies

• Network Security Design & Implementation:
  
  

• Network Security Design & Implementation:
  
  

• Firewall & Intrusion Detection:
  
  

• Threat Monitoring & Incident Response:
  
  

• Security Audits & Risk Assessments:
  
  

• Security Tools & Automation:
  
  

• Strong understanding of network protocols, including TCP/IP, DNS, DHCP, and HTTP.
• Hands-on experience with firewalls (Palo Alto, Cisco ASA, Fortinet, etc.), VPN technologies, and IDS/IPS.
• Experience with network security tools such as SIEM, vulnerability scanners (Nessus, Qualys), and penetration testing tools.
• Familiarity with cloud security architectures and hybrid environments (AWS, Azure).
• Knowledge of industry standards and best practices (NIST, ISO 27001, PCI DSS).

• Seniority level Mid-Senior level

• Employment type Full-time

• Job function Information Technology
• Industries Technology, Information and Media

Referrals increase your chances of interviewing at Impronics Technologies by 2x

Kempton Park, Gauteng, South Africa 5 days ago

Johannesburg, Gauteng, South Africa 1 month ago

Johannesburg, Gauteng, South Africa 1 month ago

Midrand, Gauteng, South Africa 2 weeks ago

Midrand, Gauteng, South Africa 2 weeks ago

Randburg, Gauteng, South Africa 4 days ago

Johannesburg, Gauteng, South Africa 5 days ago

Johannesburg, Gauteng, South Africa 1 month ago

Johannesburg, Gauteng, South Africa 1 month ago

Johannesburg, Gauteng, South Africa 1 week ago

Johannesburg, Gauteng, South Africa 2 days ago

Johannesburg, Gauteng, South Africa 6 days ago

Midrand, Gauteng, South Africa 1 month ago

Johannesburg, Gauteng, South Africa 3 days ago

Johannesburg, Gauteng, South Africa 1 month ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

Overview

Network and Security Engineer - Healthcare IT (ACRN) - Harare or Johannesburg

Location: Harare or Johannesburg, South Africa – On site at one of these locations

Hours: Full Time

Reports to: Chief Technology Officer - Africa Clinical Research Network

Work Environment: This position can be based in Zimbabwe or South Africa, with occasional travel to other office locations as necessary. The role may require flexible working hours to support remote teams and ensure systems are running smoothly across time zones.

We are seeking a Network and Security Engineer with expertise in healthcare IT security, HL7 data exchange, and regulatory compliance. This role is responsible for designing, implementing, and securing network infrastructure in a healthcare environment, ensuring the confidentiality, integrity, and availability of Health Information Systems (HIS) while supporting interoperability standards such as HL7, FHIR, and DICOM. The ideal candidate will have strong experience in network security, healthcare data standards, and regulatory compliance (HIPAA, HITECH, POPIA, GDPR) and will play a key role in securing electronic health records (EHRs) and clinical data exchanges both on premise and across multiple clouds.

• Healthcare Network & Infrastructure Security: Design, implement, and maintain secure network architectures for healthcare IT environments, including hospitals, clinics, IoT and telemedicine platforms.
• Manage and secure HL7 interfaces, FHIR APIs, and data interoperability between healthcare systems (EHRs, PACS, LIS, HIS, RIS, etc.).
• Configure, maintain, and optimize firewalls, VPNs, IDS/IPS, NAC, Cloud Security and secure VLAN segmentation to ensure network security.
• Design and manage the organization SD-WAN and its policies; Implement a ZERO Trust environment.
• Establish secure data channels allowing for health data sharing and interoperability; Create secure trusts between ACRN and partner sites.
• Troubleshoot network connectivity and integration issues related to HL7 data exchange and interoperability.
• Data Security & Compliance: Implement encryption, access control, and data loss prevention (DLP) strategies to protect HIS/EHR and sensitive patient records.
• Ensure compliance with healthcare data protection regulations (HIPAA, HITECH, POPIA, GDPR, GCP, GLP, ISO 27001).
• Conduct risk assessments, vulnerability scans, and penetration testing; Develop and enforce security policies and procedures for healthcare IT infrastructure.
• Threat Management & Incident Response: Monitor SIEM solutions for suspicious activity; Respond to cyber threats, malware, ransomware, and phishing; Lead incident response and forensic investigations; Develop disaster recovery (DR) and business continuity (BC) plans.
• Manage Microsoft 365 environment security (Intune, MDM, Active Directory Online).
• Interoperability & Health Data Exchange Security: Secure messaging protocols (HL7 v2.x, HL7 v3, FHIR, DICOM, X12, CDA, IHE); Collaborate with EHR vendors, medical device manufacturers, and HIEs; Monitor API security for FHIR-based applications.
• Collaboration & Continuous Improvement: Work with healthcare IT teams, compliance officers, and clinicians; Stay updated on emerging threats in healthcare cybersecurity; Provide security awareness training.

• Bachelor's degree in Computer Science, Cybersecurity, Healthcare Informatics, or related field.
• 5+ years of experience in network security and IT infrastructure, preferably in a healthcare environment.
• Strong knowledge of healthcare standards and data security (HL7, FHIR, DICOM, HIPAA, HITECH, ISO 27001, POPIA).
• Hands-on experience with firewalls, VPNs, IDS/IPS, SIEM, and endpoint security solutions.
• Proficiency in Cisco, Palo Alto, Fortinet, Juniper networking and security devices.
• Experience securing EHRs, health information exchanges (HIEs), and cloud-based health platforms (AWS, Azure, Google Cloud for Healthcare).
• Strong understanding of medical device security, IoT security, and cloud security best practices.
• Knowledge of scripting and automation (Python, PowerShell, Bash) is an advantage.

• CCNA Security / CCNP Security
• Certified Information Systems Security Professional (CISSP)
• Certified Ethical Hacker (CEH)
• HealthCare Information Security and Privacy Practitioner (HCISPP)
• CompTIA Security+
• Certified HL7 Specialist (optional, but a plus)

• Strong problem-solving and analytical skills in network security and healthcare IT environments.
• Excellent communication skills to work effectively with technical and non-technical stakeholders.
• Ability to work under pressure in fast-paced healthcare environments with high data sensitivity.

Please apply online providing a covering letter specifically highlighting how your existing skills and experiences support fulfilling the responsibilities of this role.

Note: Referrals increase your chances of interviewing at Ellison Institute of Technology Oxford.