Johannesburg: Systems / Networks Administrator (Ops Specialist) posted by Hire Resolve

Hire Resolve’s client is looking for a highly skilled and experienced Senior Systems/Network Administrator to join
their team in Centurion, EC. 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

• Expert-level administration of Debian-based distributions (Ubuntu) and RedHat derivatives (Alma, Rocky).

• Provisioning and configuring servers, clusters, laptops, and other devices via the CLI.

• Installation and configuration of LOB (Line-of-Business) applications manuallyconfig files (YAML, JSON).

• Monitoring and troubleshooting system performance, processes, and logs to ensure smooth operations.

• Participating in interviews and tests focused on troubleshooting system issues based on log output and process analysis.

Windows Systems Administration

• Managing and supporting Windows servers in a range of functions, including Active Directory (AD/LDAP), DHCP, DNS, NPS, Certificate Services, IIS, and Hyper-V.

• Knowledge of IIS modules (Dot Net, ASP, WebSockets).

• Providing user desktop support and managing Windows-based file servers.

• Taking ownership of Windows Server maintenance and administration tasks.

Networking

• Working in environments with Core/Distribution/Access-switching topologies, high-throughput aggregation switches, and edge/access switches (Edgecore, MikroTik, UniFi, D-Link).

• Managing VLANs, implementing modern tunneling technologies such as ZeroTier and WireGuard, and being well-versed in iptables/ip6tables, firewalld, and network bonding techniques.

• Hands-on configuration and troubleshooting of FortiGate, MikroTik, pfSense, and other similar systems.

• Maintaining network performance and ensuring uptime for critical services.

• Knowledge of monitoring applications such as Zabbix, Nagios, DataDog, and New Relic.

• IPAM/DCIM experience essential.

Database Support

• Providing basic support for Postgres, Oracle, and MariaDB environments (backups, restores, and minor SQL queries).

• OracleDB knowledge advantageous, including the use of Oracle Data Pump and TNS Listener troubleshooting.

• Collaborating with DBA teams to ensure database availability and performance.

Server Hardware & Storage Administration

• Manage SAN, NAS, DAS, LVM, and LUN infrastructures. From setting up and configuring HPE SAN systems to managing Synology, Seagate NAS, and FreeNAS devices.

• Perform tasks such as HBA bonding, SCSI configuration, and storage performance optimization.

• Server hardware assembly/upgrades and troubleshooting.

• RAID and other HA methods, including setup and best practice configurations.

• Veeam Backup and Quest NetVault experience advantageous.

• Familiarity with LTO-tape technology and how it works and is used will be advantageous.

Virtualization & Cluster Management

• Administering Xen-based hypervisor clusters (XCP/Xen Hypervisors) and Hyper-V environments.

• Deploying, maintaining, and troubleshooting virtualized environments.

• Managing cluster performance, failover, and storage integration.

• Past hands-on experience with Hyper-V clusters and VMWare vSphere advantageous.

• Knowledge of Docker, Kubernetes, and containerization technologies is advantageous.

Office Administration & Soft Skills

• Implementing ITIL-based best practices (ITSM).

• Managing assets (ITAM), including hardware procurement, supplier negotiation, warranties, and SLAs.

• Familiarity with JIRA and Confluence is advantageous.

• Experience collaborating with interdepartmental teams, such as Finance and Audit.

• Strong English communication skills, both written and verbal, with professional email etiquette.

• Writing of support and training documentation.

• Strong troubleshooting and analytical abilities.

• Ability to work independently and unsupervised, manage multiple priorities in a fast-paced environment.

• Eagerness to learn new technologies and systems, be curious!

Requirements: 

• A bachelor’s degree in computer information systems, management information systems, or similar.

• Certifications: A+ & N+, MTCNA, ICND1, UBWA, Linux+/LPIC1, Server+, MCSA: Windows Server 2016or the nearest equivalent of the aforementioned.

Desired Certifications:

LPIC2, MCITP, MTCRE, CCNA, MCSE: Core Infrastructure, ITILv4, Security+.

• Extensive experience in technical management, preferably in a related industry.

• Advanced knowledge of IT Infrastructure and Information Systems innovation and integration.

• Ability to manage IT support teams.

• Familiarity with database queries.

• Knowledge of database design and theories.

• Ability to work with data architects and other IT specialists to set up, maintain, and monitor data networks.

• Knowledge of database structure languages, such as SQL or SQL/PSM.

• Experience with server installation and maintenance.

• Familiarity with database management best practices.

• Has a full understanding of the IT SDLC.

• Experience in ITIL and AGILE Methodologies advantageous.

• Ability to diagnose faults, incidents, and problems, and implement required changes.

• Ensuring optimal hardware and software functionality, as well as network security.

• Exceptional communication and interpersonal skills.

If you are looking for career advancement and new environments, kindly forward your CV to Gaby Turner *****@*****.co.za or you may forward your CV to *****@*****.co.za