Senior Systems / Networks Administrator (Ops Specialist)
Hire Resolve
Irene, Gauteng
Permanent
Posted 23 September 2025
- Closing Date 23 November 2025
Job Details
Job Description
A leading Software Development company is looking for a Senior Systems / Networks Administrator (Ops Specialist) to join their team in Irene, GP. The ideal candidate will have extensive hands-on experience with both Linux and Windows environments, advanced networking, virtualization, storage solutions, and system clusters. This role demands technical expertise, a strong troubleshooting mindset, and the ability to work independently with minimal supervision. Attention to detail is essential, along with a holistic understanding of all interconnected components.
Responsibilities:
• Linux Systems Administration
o Expert-level administration of Debian-based distributions (Ubuntu) and RedHat derivatives (Alma, Rocky).
o Provisioning and configuring servers, clusters, laptops, and other devices via the CLI.
o Installation and configuration of LOB (Line-of-Business) applications manually—config files (YAML, JSON).
o Monitoring and troubleshooting system performance, processes, and logs to ensure smooth operations.
o Participating in interviews and tests focused on troubleshooting system issues based on log output and process analysis.
• Windows Systems Administration
o Managing and supporting Windows servers in a range of functions, including Active Directory (AD/LDAP), DHCP, DNS, NPS, Certificate Services, IIS, and Hyper-V.
o Knowledge of IIS modules (Dot Net, ASP, WebSockets).
o Providing user desktop support and managing Windows-based file servers.
o Taking ownership of Windows Server maintenance and administration tasks
• Networking
o Working in environments with Core/Distribution/Access-switching topologies, high- throughput aggregation switches, and edge/access switches (Edgecore, MikroTik, UniFi, D-Link).
o Managing VLANs, implementing modern tunneling technologies such as ZeroTier and WireGuard, and being well-versed in iptables/nftables, firewalld, and network bonding techniques.
o Hands-on configuration and troubleshooting of FortiGate, MikroTik, pfSense, and other similar systems.
o Maintaining network performance and ensuring uptime for critical services.
o Knowledge of monitoring applications such as Zabbix, Nagios, Data Dog and New Relic.
o IPAM/DCIM experience essential.
• Database Support
o Providing basic support for Postgres, Oracle, and MariaDB environments (backups, restores, and minor SQL queries).
o OracleDB knowledge advantageous, including the use of Oracle Data Pump and TNS Listener troubleshooting.
o Collaborating with DBA teams to ensure database availability and performance.
• Server Hardware & Storage Administration
o Manage SAN, NAS, DAS, LVM, and LUN infrastructures. From setting up and configuring HPE SAN systems to managing Synology, Seagate NAS and FreeNAS devices.
o Perform tasks such as HBA bonding, SCSI configuration, and storage performance optimization.
o Server hardware – assembly/upgrades and troubleshooting
o RAID and other HA methods, including setup and best practice configurations.
o Veeam Backup and Quest NetVault experience advantageous.
o Familiarity with LTO-tape technology and how it works and is used will be advantageous.
• Virtualization & Cluster Management
o Administering Xen-based hypervisor clusters (XCP/Xen Hypervisors) and Hyper-V environments.
o Deploying, maintaining, and troubleshooting virtualized environments.
o Managing cluster performance, failover, and storage integration.
o Past hands-on experience with Hyper-V clusters and VMWare vSphere advantageous.
o Knowledge of Docker, Kubernetes, and containerization technologies is advantageous.
• Office Administration & Soft Skills
o Implementing ITIL-based best practices (ITSM).
o Managing assets (ITAM), including hardware procurement, supplier negotiation, warranties, and SLAs.
o Familiarity with JIRA and Confluence is advantageous.
Requirements:
Our client is offering a highly competitive salary for this role based on experience.
Apply for this role today, contact Gaby Turner at [email protected] or on LinkedIn
You can also visit the Hire Resolve website: hireresolve.us or email us your CV: [email protected]
• Linux Systems Administration
o Expert-level administration of Debian-based distributions (Ubuntu) and RedHat derivatives (Alma, Rocky).
o Provisioning and configuring servers, clusters, laptops, and other devices via the CLI.
o Installation and configuration of LOB (Line-of-Business) applications manually—config files (YAML, JSON).
o Monitoring and troubleshooting system performance, processes, and logs to ensure smooth operations.
o Participating in interviews and tests focused on troubleshooting system issues based on log output and process analysis.
• Windows Systems Administration
o Managing and supporting Windows servers in a range of functions, including Active Directory (AD/LDAP), DHCP, DNS, NPS, Certificate Services, IIS, and Hyper-V.
o Knowledge of IIS modules (Dot Net, ASP, WebSockets).
o Providing user desktop support and managing Windows-based file servers.
o Taking ownership of Windows Server maintenance and administration tasks
• Networking
o Working in environments with Core/Distribution/Access-switching topologies, high- throughput aggregation switches, and edge/access switches (Edgecore, MikroTik, UniFi, D-Link).
o Managing VLANs, implementing modern tunneling technologies such as ZeroTier and WireGuard, and being well-versed in iptables/nftables, firewalld, and network bonding techniques.
o Hands-on configuration and troubleshooting of FortiGate, MikroTik, pfSense, and other similar systems.
o Maintaining network performance and ensuring uptime for critical services.
o Knowledge of monitoring applications such as Zabbix, Nagios, Data Dog and New Relic.
o IPAM/DCIM experience essential.
• Database Support
o Providing basic support for Postgres, Oracle, and MariaDB environments (backups, restores, and minor SQL queries).
o OracleDB knowledge advantageous, including the use of Oracle Data Pump and TNS Listener troubleshooting.
o Collaborating with DBA teams to ensure database availability and performance.
• Server Hardware & Storage Administration
o Manage SAN, NAS, DAS, LVM, and LUN infrastructures. From setting up and configuring HPE SAN systems to managing Synology, Seagate NAS and FreeNAS devices.
o Perform tasks such as HBA bonding, SCSI configuration, and storage performance optimization.
o Server hardware – assembly/upgrades and troubleshooting
o RAID and other HA methods, including setup and best practice configurations.
o Veeam Backup and Quest NetVault experience advantageous.
o Familiarity with LTO-tape technology and how it works and is used will be advantageous.
• Virtualization & Cluster Management
o Administering Xen-based hypervisor clusters (XCP/Xen Hypervisors) and Hyper-V environments.
o Deploying, maintaining, and troubleshooting virtualized environments.
o Managing cluster performance, failover, and storage integration.
o Past hands-on experience with Hyper-V clusters and VMWare vSphere advantageous.
o Knowledge of Docker, Kubernetes, and containerization technologies is advantageous.
• Office Administration & Soft Skills
o Implementing ITIL-based best practices (ITSM).
o Managing assets (ITAM), including hardware procurement, supplier negotiation, warranties, and SLAs.
o Familiarity with JIRA and Confluence is advantageous.
Requirements:
Bachelor's degree in Computer Information Systems, Management Information Systems, or a similar field.
Extensive experience in technical management, preferably within a related industry.
Advanced knowledge of IT infrastructure, information systems innovation, and integration.
Full understanding of the IT Software Development Life Cycle (SDLC).
Experience with server installation, maintenance, and monitoring.
Familiarity with database management best practices, design, theories, and queries.
Knowledge of database structure languages (e.g., SQL, SQL/PSM).
Ability to collaborate with data architects and IT specialists to set up, maintain, and monitor data networks.
Proficiency in diagnosing faults, incidents, and problems and implementing effective changes.
Experience with ITIL and AGILE methodologies is advantageous
A+ & Network+
MTCNA
ICND1
UBWA
Linux+ / LPIC-1
Server+
MCSA: Windows Server 2016 (or nearest equivalent)
LPIC-2
MCITP
MTCRE
CCNA
MCSE: Core Infrastructure
ITILv4
Security+
Our client is offering a highly competitive salary for this role based on experience.
Apply for this role today, contact Gaby Turner at [email protected] or on LinkedIn
You can also visit the Hire Resolve website: hireresolve.us or email us your CV: [email protected]
