Senior Infrastructure Engineer: Windows, AD, Azure, VMware

Hire Resolve; Johannesburg; On-site; ZAR 900,000 - 1,200,000; Full time

Job summary

Hire Resolve in Johannesburg is seeking a Senior Server Engineer to design, implement, and support our enterprise server and cloud infrastructure. You will work across Windows Server, AD, Exchange Hybrid, M365, Azure, VMware, and SAN storage, ensuring stability, security, and high service availability.

The role requires independent problem solving, incident management, and collaboration with development teams in a regulated financial services environment.

Qualifications

• Minimum 7 years of enterprise server, systems, or infrastructure engineering experience.
• Strong Windows Server administration and troubleshooting.
• Strong Active Directory, DNS, Group Policy, and authentication support.
• Strong Exchange administration including mailflow troubleshooting.
• Experience with Exchange Hybrid and Exchange Online.
• Strong Microsoft 365 / Office 365 administration experience.

Responsibilities

• Support, maintain, and troubleshoot Windows Server environments across production, UAT, development, and DR platforms.
• Manage OS configuration, patching, hardening, performance optimisation, and service availability.
• Investigate server performance issues, service failures, resource constraints, and application dependencies.
• Support server lifecycle activities including provisioning, upgrades, migrations, and decommissioning.
• Maintain server build standards, configuration baselines, operational procedures, and runbooks.
• Participate in planned maintenance windows and provide after-hours support as required.
• Act as escalation point for complex server, platform, and infrastructure incidents.
• Administer and support Active Directory Domain Services including users, groups, service accounts, and organisational units.
• Manage Group Policy design, troubleshooting, maintenance, and controlled rollout.
• Troubleshoot authentication, replication, DNS, Kerberos, LDAP, and domain controller health issues.
• Assist with identity-related incidents affecting users, applications, servers, and scheduled tasks.
• Support privileged access management, access reviews, and audit readiness.
• Support Exchange environments including hybrid coexistence with Exchange Online.
• Troubleshoot mailflow issues across internal, external, hybrid, cloud, and third‑party mail routes.
• Investigate delayed, failed, rejected, quarantined, or misrouted email.
• Support connectors, accepted domains, transport rules, relay permissions, and mail routing.
• Troubleshoot mailbox access, Outlook connectivity, Autodiscover, and hybrid mailbox moves.
• Assist with Exchange certificate management, namespace configuration, and hybrid configuration health.
• Collaborate with network, firewall, DNS, and security teams on mailflow dependencies.
• Support email security gateways and related DMARC/SPF/DKIM workflows.
• Support Microsoft 365 administration across Exchange Online, identity integration, Teams, OneDrive, and SharePoint.
• Administer Exchange Online mailboxes, groups, connectors, transport rules, and mailbox permissions.
• Support hybrid mailbox management and cloud mailbox troubleshooting.
• Investigate Microsoft 365 service incidents affecting email, identity, collaboration, or authentication.
• Use Microsoft 365 admin centres and PowerShell for administration and troubleshooting.

Skills

Windows Server

Active Directory

Exchange Hybrid

Microsoft 365

Azure

VMware

SAN storage

Tools

Nagios

PRTG

SolarWinds

Job description

Hire Resolve in Johannesburg is seeking a Senior Server Engineer to design, implement, and support our enterprise server and cloud infrastructure. You will work across Windows Server, AD, Exchange Hybrid, M365, Azure, VMware, and SAN storage, ensuring stability, security, and high service availability.

The role requires independent problem solving, incident management, and collaboration with development teams in a regulated financial services environment.