Systems Administrator (JHB)

DataFin; Cape Town, Johannesburg; On-site; ZAR 200,000 - 300,000; Full time

Job summary

A dynamic financial solutions provider is seeking a Systems Administrator to manage their network and server infrastructure. Responsibilities include maintaining optimal performance, handling backups, and ensuring security compliance. Ideal candidates should have relevant certifications and a minimum of 3 years of infrastructure maintenance experience. Strong problem-solving and communication skills are essential for this role.

Qualifications

• Minimum of 3 years’ experience with infrastructure maintenance.
• Proficient in server technologies like Windows Server and Linux/Unix.
• Knowledge of scripting languages (PowerShell, Bash, Python).

Responsibilities

• Administer, monitor, and maintain company network infrastructure.
• Install, configure, and maintain physical and virtual servers.
• Manage and maintain telephony infrastructure.

Skills

Network administration expertise (TCP/IP, DNS, DHCP)

Problem-solving skills

Experience with cloud infrastructure (AWS, Azure, Google Cloud)

Strong communication skills

Education

BSc in Computer Science or a related field

Tools

Nagios

SolarWinds

Zabbix

Job description

Overview

A dynamic provider of tailored financial solutions seeks a Systems Administrator with a strong technical background, hands-on experience, and a proactive approach to problem-solving in a dynamic business environment. You will be responsible for installing, updating, and configuring systems; taking steps to monitor and identify any potential issues, and implementing preventative measures. You will also ensure system back-ups are taking place as required and handle any downtime effectively.

Responsibilities

• Administer, monitor, and maintain all company network infrastructure (LAN, WAN, VPN, wireless, and firewalls).
• Install, configure, and maintain physical and virtual servers (Windows, Linux, etc.), ensuring optimal performance and availability.
• Manage and maintain telephony infrastructure and the optimization of thereof.
• Monitor systems for performance, reliability, and security, responding to alerts and resolving issues proactively.
• Manage and report on root cause analysis for faults with remedial action.
• Troubleshooting and monitoring network related performance focusing on the remote and on-site deployment.
• Setup monitoring software for performance on servers to do preventative maintenance.
• Assist Support team on complex technical issues.
• Work together with the Department Manager to define policies and procedures relating to network performance and security.
• Secure server environments by creating documented policies with procedures, implementation, and monitoring thereof.
• Ensure network protocols are documented refining security between network devices.
• Oversee Patch Management policy.
• Budget control and administration of software licensing.
• Maintain vendor and supplier relations.
• Stay abreast of emerging technologies and best practices to recommend improvements and ensure compliance with industry standards.

Qualifications

Qualifications –

• Certifications such as CompTIA Network+, CompTIA Security+, Microsoft Certified: Azure Administrator, Cisco CCNA, or similar.

Experience / Skills

• Minimum of 3 years’ experience with infrastructure maintenance.
• Understanding of SQL backups.
• Microsoft Azure experience.
• Proven expertise in network administration (TCP/IP, DNS, DHCP, VLANs, firewalls, wireless).
• Strong knowledge of server technologies (Windows Server, Linux/Unix, Active Directory, virtualisation platforms such as VMware or Hyper-V).
• Familiarity with monitoring and management tools (e.g., Nagios, SolarWinds, Zabbix).
• Experience in cloud infrastructure (AWS, Azure, Google Cloud).
• Knowledge of scripting languages (PowerShell, Bash, Python) for automation.

Advantageous

• BSc in Computer Science or a related field.
• Microsoft Certifications.
• Security Certifications.
• Expertise or experience with ManageEngine range of products.

Attributes

• Strong skills for daily operational challenges.
• Excellent problem-solving, analytical, and communication skills.
• Ability to work independently and as part of a team, including participation in an on-call rotation if required.