Cape Town: Senior Systems Administrator (JHB) posted by Datafin
Posted on 2025-09-18 00:00:00
| Employer | Datafin |
|---|---|
| Category | Other IT/Computer |
| Location | Western Cape / Cape Town |
Job Summary
Johannesburg – Gauteng – South Africa, Cape Town – Western Cape – South Africa
- Analyse security risks and develop response procedures.
- Evaluate, recommend, and implement other security and monitoring devices.
- Install computer security software.
- Conduct regular security audits.
- Prepare security status reports.
- Educate users on computer security.
- Create security documentation for users.
- Assist in Disaster Recovery and gather evidence regarding Cybercrimes.
- Oversee Patch Management policy.
- Manage user access, permissions, and security policies across network and server environments.
- Administer, monitor, optimise 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 systems and the optimization thereof.
- Steer and administer the cloud migration process with cost projections, planning, and implementation.
- 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.
- Implement and oversee regular system backups, performing test-restores to ensure data integrity and availability.
- Document network/server configurations, processes, and recovery procedures.
- Develop, update, and test Disaster Recovery and Business Continuity plans to minimise downtime and data loss.
- 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.
- Certifications such as CompTIA Network+, CompTIA Security+, Microsoft Certified: Azure Administrator, Cisco CCNA, or similar.
- Minimum of 3 years experience with infrastructure maintenance.
- Understanding of SQL backups.
- Understanding of Cybersecurity principles and best practices.
- Previous experience in developing and testing Disaster Recovery and Business Continuity plans.
- 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).
- Experience with backup solutions (e.g., Veeam, Commvault, Acronis) and Disaster Recovery planning.
- Extensive experience with Hyper-V replication, Veeam backup and replication.
- 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.
- BSc in Computer Science or a related field.
- Microsoft Certifications.
- Security Certifications.
- Expertise or experience with ManageEngine range of products.
- 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.
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