Senior IT Infrastructure Engineer

ATS Client; Midrand; On-site; ZAR 700,000 - 1,000,000; Full time

Job summary

ATS Client is seeking a Senior IT Infrastructure Engineer to lead hybrid infrastructure operations across on‑premises and Microsoft Azure environments. You will deploy, configure, and maintain Windows and Linux servers, manage HP Synergy blade infrastructure, and administer Hyper‑V clusters and SQL failover configurations.

You will also configure networks, ensure security, integrate Azure services, manage backups with VEEAM, and mentor junior engineers while documenting topology and SOPs.

Qualifications

• Diploma or degree in IT or related field.
• 5+ years in IT infrastructure engineering with Windows/Linux.
• Strong virtualization, networking, and documentation skills.

Responsibilities

• Deploy, configure, and maintain Windows and Linux servers on‑prem and Azure.
• Manage HP Synergy blade servers and storage technologies.
• Administer Hyper‑V clusters and SQL failover configurations.
• Patch, upgrade, and maintain servers per IT standards.
• Monitor performance and ensure high availability.
• Configure and maintain HP/Aruba network switches and VPNs.
• Support Azure VNets, NSGs, and ExpressRoute integration.
• Administer IP telephony and Teams integration.
• Backup with VEEAM and conduct DR testing.
• Document topology, SOPs, and runbooks; mentor juniors.

Skills

HP Synergy / Server Blade Infra

Hyper-V

Microsoft SQL Server

LAN/WAN/VPN

Microsoft AD / Azure AD / DNS

Remote Desktop Services

Microsoft 365 / SharePoint Online

VEEAM Backup & Recovery

Windows & Linux OS

Perimeter Security

Education

Diploma/Degree in Information Technology

Tools

HP Servers

HP Switches

Hyper-V

Azure

VEEAM

SharePoint Online

Microsoft 365

DNS

Job description

About the job

Senior IT Infrastructure Engineer

Responsibilities

Hybrid Infrastructure Operations

• Deploy, configure, and maintain Windows and Linux servers across on-premises and Microsoft Azure environments.
• Manage HP Synergy blade servers and associated storage technologies.
• Administer Hyper‑V clusters and failover configurations for Microsoft SQL Server.
• Perform regular patching, firmware updates, and server upgrades in line with The Companys IT standards.
• Monitor system performance and proactively resolve issues to ensure high availability.

Network Infrastructure

• Configure and maintain HP/Aruba network switches and LAN/WAN/VPN connectivity.
• Support perimeter security and internal network segmentation.
• Configure and manage Azure Virtual Networks (VNets) and Network Security Groups (NSGs).
• Monitor Azure network connectivity, performance, and availability.
• Integrate on‑prem infrastructure with cloud via VPN and ExpressRoute.
• Troubleshoot and optimize hybrid network routing.
• Collaborate with Security teams to ensure network compliance and resilience.

Internet Connectivity

• Manage LAN/WAN/VPN infrastructure.
• Coordinate with ISPs and optimize performance.
• Perform network monitoring and proactive issue resolution.
• Align with hybrid cloud and continuity strategies.

IP Telephony

• Administer IP telephony and VoIP systems.
• Integrate with Microsoft Teams and collaboration platforms.
• Provide hardware/software support for telephony infrastructure.
• Maintain documentation of telephony architecture and service providers.

Cloud Integration

• Support integration between on‑premises infrastructure and Microsoft Azure services.
• Administer Azure AD, DNS, and Microsoft 365 services including SharePoint Online and Remote Desktop Services.
• Assist in cloud migration and optimization initiatives.

Backup & Recovery

• Implement and manage VEEAM backup and disaster recovery solutions.
• Conduct regular backup validation and recovery testing.
• Lead Disaster Recovery Test Initiatives for The Company.

Support & Escalation

• Provide 2nd and 3rd level technical support for infrastructure‑related incidents.
• Participate in standby and after‑hours escalation support.
• Document root cause analysis and contribute to continuous service improvement.

Documentation & Reporting

• Maintain accurate technical documentation including SOPs, topology diagrams, and configuration logs.
• Report on system health, capacity, and risk posture to the IT Infrastructure Manager.

Collaboration & Mentorship

• Work closely with the IT Infrastructure Manager and engineering teams to align with The Companys IT strategy.
• Mentor junior engineers and contribute to knowledge sharing across the team.

Required Experience & Skills

• HP Synergy / Server Blade Infrastructure
• Storage Technologies preferably HPE and Fibre Channel
• Hyper‑V and Hyper‑V Clusters
• Failover Clusters for Microsoft SQL Server
• LAN/WAN/VPN Technology
• Microsoft AD / Azure AD / DNS
• Remote Desktop Services
• Microsoft 365 and SharePoint Online
• DNS and Certificate management
• IP Telephony
• VEEAM Backup and Recovery
• Operating Systems Microsoft and Linux
• Strong understanding of TCP/IP and internetworking with heterogeneous technologies
• Perimeter Security

Minimum Requirements

• Diploma/Degree in Information Technology or related field
• Minimum 5 years experience in IT infrastructure engineering
• Strong knowledge of Windows/Linux server administration, virtualization, and networking
• Experience with HP Servers, Switches, Hyper‑V, Microsoft SQL Server, and Azure technologies
• Familiarity with ITSM practices (Incident, Problem, Change Management)
• Proficiency in technical documentation and system architecture
• Networking fundamentals and administration skills
• Strong knowledge of systems architecture

Advantageous Certifications

• ITIL certification
• HP Networking Certifications
• Network Professional (ACNP)
• Microsoft Certifications (e.g., AZ‑104, AZ‑305)
• Linux Certifications (e.g., LPIC‑1, RHCSA)
• Cisco CCNA or CCNP (as complementary networking knowledge)