T infrastructure roles focus on building, maintaining, securing, and optimizing an organization’s technology setting (servers, networks, cloud, data centers, endpoints, etc.). Below is a structured breakdown of key roles and their responsibilities.

1) IT Infrastructure Manager / Head of Infrastructure

Responsibilities:
Define infrastructure strategy aligned with business goals
Oversee servers, networks, cloud, storage, and security
Manage budget, vendors, and contracts
Ensure high availability, disaster recovery (DR), and business continuity
Lead infrastructure team and performance management
Approve architecture and technology standards

2) Systems Administrator (SysAdmin)

Responsibilities:
Install, configure, and maintain servers (Windows/Linux)
Manage Active Directory, user accounts, permissions
Monitor system performance and uptime
Perform patching, upgrades, and backups
Troubleshoot hardware and OS issues
Maintain virtualization platforms (e.g., VMware vSphere, Microsoft Hyper-V)

3) Network Administrator / Network Engineer

Responsibilities:




Configure and maintain LAN/WAN networks
Manage routers, switches, firewalls
Monitor network performance and security
Implement VPNs and network segmentation
Troubleshoot connectivity issues
Work with vendors like Cisco Systems and Juniper Networks

4) Cloud Engineer / Cloud Architect

Responsibilities:
Design and deploy cloud infrastructure
Manage cloud platforms such as Amazon Web Services, Microsoft Azure, or Google Cloud
Implement Infrastructure as Code (IaC)
Optimize cloud costs and performance
Ensure cloud security and compliance
Plan hybrid or multi-cloud strategies

5) IT Support Specialist / Help Desk Technician

Responsibilities:
Provide first-line technical support
Troubleshoot hardware, software, and connectivity issues
Install and configure end-user devices
Manage ticketing systems

6) DevOps Engineer

Responsibilities:
Automate infrastructure dep

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