Johannesburg: IT Network Administrator (2nd Line Support) (Sandton Onsite) posted by Datafin
Posted on 2025-04-30 00:00:00
| Employer | Datafin |
|---|---|
| Category | Other IT/Computer |
| Location | Gauteng / Johannesburg |
Job Summary
Johannesburg – Gauteng – South Africa
- Provide advanced 2nd Line IT support for software, hardware and network issues escalated from 1st Line Support.
- Diagnose and resolve complex IT problems, ensuring system reliability.
- Act as a key IT contact for internal teams, providing expert advice and solutions.
- Monitor network and IT infrastructure to proactively detect and resolve issues.
- Lead PC setup, software configurations and pre-deployment testing.
- Conduct network troubleshooting and optimisation to ensure secure, stable connectivity.
- Provide remote deployment support for software and hardware installations at customer sites.
- Manage and configure Active Directory, Group Policies, DNS, DHCP and VPNs.
- Optimise network performance and diagnose connectivity issues (e.g. slow speeds, packet loss).
- Maintain and troubleshoot LAN/WAN, VLANs, Firewalls, Routers and Switches.
- Manage firewalls (Cisco, Fortinet, MikroTik) and VPN configurations.
- Implement cybersecurity measures to protect network integrity and prevent threats.
- Utilise network monitoring tools (e.g. Zabbix, PRTG, SolarWinds) for real-time performance tracking.
- Assist in data protection, user access controls and IT security best practices.
- Develop and maintain detailed as-built documentation for network and system configurations.
- Document troubleshooting steps to improve the knowledge base and incident response efficiency.
- Continuously enhance IT operations by analysing past incidents and recommending improvements.
- Microsoft Certified: Azure Administrator Associate (MCSA, MCSE). Or (AWS Certified).
- Cisco Certified Network Associate (CCNA) or higher (CCNP). Or (Juniper Network Certifications).
- CompTIA Network+ (Networking Fundamentals).
- ITIL Foundation (IT Service Management & Incident Response).
- Zabbix Certified Specialist (For monitoring system administration). Or (Similar).
- 5 Years of experience in IT Support, Network Administration, or System Administration.
- Proven experience in troubleshooting escalated IT issues (2nd Line Support).
- Strong knowledge of network configurations, firewall management and security protocols.
- Hands-on experience with Active Directory (AD), Group Policies and Microsoft 365 Administration.
- Experience in troubleshooting Windows 10/11, Linux (Ubuntu/CentOS) and macOS systems.
- Experience in remote IT support tools (RDP, TeamViewer, AnyDesk, PowerShell).
- Proficient in configuring and managing routers, switches and firewalls.
- Hands-on experience in LAN/WAN troubleshooting, VLAN setup and VPN administration.
- Strong knowledge of Wi-Fi networks, subnetting and IP addressing.
- Experience in server administration (Windows Server, Linux).
- Basic scripting knowledge (PowerShell, Bash, or Python) for IT automation.
- Understanding of Cybersecurity principles (Access Control, MFA, Security Audits).
- Knowledge of SIEM tools (Splunk, ELK, Graylog) and endpoint security solutions.
- Proficient in firewall management and intrusion detection systems.
- Familiarity with patch management and OS updates (WSUS, SCCM, Intune).
- Experience with cloud environments (Azure, AWS, Google Cloud).
- Managing virtualisation (VMware, Hyper-V, Proxmox).
- Supporting remote users via VPNs, cloud applications and remote desktop tools.
- Problem-Solving & Troubleshooting Ability to diagnose and resolve complex IT issues quickly.
- Communication & Collaboration Can explain technical concepts to non-technical users.
- Initiative-Taking Attitude Proactively identifies, troubleshoots and resolves IT issues.
- Teamwork & Knowledge Sharing Works well in cross-functional teams and can mentor junior staff.
- Adaptability Keeps up with modern technologies, evolving IT needs and business changes.
- Documentation & Reporting Ability to write clear technical documentation and reports.
Click Go Apply to apply online!
Get Similar Job Alerts
Apply directly for this position. Please read all instructions carefully.
We do not process job applications; we simply aggregate and display job listings.
More related positions
Johannesburg West: Sales Manager – sales to FMCG & Food Service posted by BizGro
A leading Food Manufacturer seeks an experienced Sales Management Professional to call on both existing potential food distributors hospitality Clients in...
View Job
Sales Manager – sales to FMCG & Food Service
Johannesburg: Operations & HR manager posted by African Premier Traders
The HR and Operations Manager is responsible for overseeing both human resources and daily operational functions within the organization. Key duties include...
View Job
Operations & HR manager
Johannesburg North: Sectional Title Portfolio Manager – WITH PADDOCKS posted by Sheli Placements
Sectional Title Portfolio ManagerAre you a detail-oriented individual with a passion for property management? We are currently seeking a Sectional Title...
View Job
Sectional Title Portfolio Manager – WITH PADDOCKS
Johannesburg: Trust Officer / Fiduciary Specialist (JB5087) posted by Kontak Recruitment
Trust Officer Fiduciary Specialist JB5087 Woodmead, Johannesburg Office BasedR45 000 - R55 000 CTC per monthProvident Fund, Group RiskPermanentA leading...
View Job
Trust Officer / Fiduciary Specialist (JB5087)
Johannesburg North: Housekeeper posted by Private
Couple wanted for domestic and garden work . Cooking required . Pleasant disposition and honesty a must . Competitive salary and working conditions.
View Job
Housekeeper
Johannesburg: Client Growth Specialist (JB5088) posted by Kontak Recruitment
Client Growth Specialist JB5088Fully Remote Suitable for candidates based in South African OnlyR20 000 to R25 000 a month CommissionPermanentA company that...
View Job
Client Growth Specialist (JB5088)
Johannesburg West: Millwright posted by Geo stott
Looking for a qualified millwright, trade tested. Must have good references min of 15 years on the job experience in the steel manufacturing industry. Not...
View Job
Millwright
Johannesburg West: Admin Junior/Reception – Temp to Permanent posted by Stealth Tactical and Arms
Data Capturing, Admin duties, Receptionist Duties.
View Job
Admin Junior/Reception – Temp to Permanent
Johannesburg: Security Site Manager – Estates posted by 24/7 Security Services
247 Security is looking for an Estate Security Site Manager with extensive experience within the Security Environment.The following criteria will be our...
View Job
Security Site Manager – Estates
Johannesburg: Assistant Site Manager – Estates posted by 24/7 Security Services
247 Security is looking for an Assistant Site Manager with extensive experience within the Security Environment.The following criteria will be our basis for...
View Job
Assistant Site Manager – Estates
Johannesburg: Special Operations Cluster Manager – Urgently Needed posted by 24/7 Security Services
247 Security is looking for a Special Operations Cluster Manager with extensive experience within the Security Environment. This person would be based at 8...
View Job
Special Operations Cluster Manager – Urgently Needed
Johannesburg: Senior Events Manager (JB5095) posted by Kontak Recruitment
Senior Events Manager JB5095 Parkhurst, Gauteng R20 000 to R25 000 Highly NegotiablePermanent Lead the planning, execution, and management of high-profile...
View Job
Senior Events Manager (JB5095)
Johannesburg City: IT Facilitator posted by Sparrow FET College
Are you passionate about IT, Cloud Computing, and empowering the next generation of tech talent? We are seeking an experienced IT Technical Support...
View Job
IT Facilitator
Johannesburg: Senior Bookkeeper & Payroll Administrator (JB5098) posted by Kontak Recruitment
Senior Bookkeeper Payroll Administrator JB5098 Lanseria, JohannesburgR45 000 - R60 000 including benefitsDuration Initial 6-month contract not probation,...
View Job
Senior Bookkeeper & Payroll Administrator (JB5098)
Johannesburg: Site Manager (Retail/Warehouse) posted by 24/7 Security Services
247 Security is looking for a Site Manager with extensive experience within the Security Environment. This person would be based in Johannesburg,...
View Job
Site Manager (Retail/Warehouse)
Johannesburg: Nissan New Car Sales Executive – Urgently needed posted by Corporate Dealership Placements – JHB
Nissan New Car Sales Executive R12000 Neg Commission Company Car Johannesburg NorthWe are looking for a fantastic new car sales executive for a Nissan...
View Job
Nissan New Car Sales Executive – Urgently needed
Johannesburg: Service Advisor – Urgently needed posted by Corporate Dealership Placements – JHB
Service Advisor - Chery R15000 - R18000, Incentives Johannesburg NorthOur client is looking for an experienced Service Advisor with dealership experience...
View Job
Service Advisor – Urgently needed
Johannesburg West: Sales Professionals posted by Phoenix Wealth
Do you have Matric Grade 12Do you have 4-5 years experience in sales?Do you have your own reliable transportAre you able to negotiate a successful sales...
View Job
Sales Professionals
Johannesburg: Sales Manager – Steel Trade and Manufacturing (JB5102) posted by Kontak Recruitment
Sales Manager - Steel Trade and Manufacturing JB5102Johannesburg, Gauteng R40 000 - R60 000 CTC per month PermanentOur client, a leading global corporation...
View Job
Sales Manager – Steel Trade and Manufacturing (JB5102)
Johannesburg South: HEALTH & SAFETY OFFICER – permanent position posted by SAKA GROUP
Your ResponsibilitiesOversee and implement health and safety policies on-site.Conduct risk assessments and identify potential hazards.Ensure compliance with...
View Job
HEALTH & SAFETY OFFICER – permanent position
Johannesburg: “External Sales Representative posted by Kontak Recruitment
External Sales Representative- PlumbingPipingPlastic Manufacturing Industry JB5111 Johannesburg, GautengR22,000 basic plus fuel allowance and company...
View Job
“External Sales Representative
Johannesburg South: PLUMBER – URGENTLY NEEDED posted by Holobye Trading
PLUMBER X 5Holobye Trading 2 Pty Ltd is looking to hire 5 X Plumbers on a permanent basis.REQUIREMENTSSuitable Candidate should be registered with Institute...
View Job
PLUMBER – URGENTLY NEEDED
Johannesburg South: ELECTRICIAN – URGENTLY NEEDED posted by Holobye Trading
ELECTRICIAN X 3Holobye Trading 2 Pty Ltd is looking to hire 3 X TECHNICIANS.REQUIREMENTSSuitable Candidates should be a Registered Electrician,Must have...
View Job
ELECTRICIAN – URGENTLY NEEDED
Johannesburg: Junior Financial Controller (JB5121) posted by Kontak Recruitment
Junior Financial Controller JB5121 Randpark Ridge, JohannesburgR25 000 - R30 000 CTC per monthPermanentA French-speaking, dynamic and detail-oriented Junior...
View Job
Junior Financial Controller (JB5121)