System Administrator

Job Description – System Administrator

Position Overview

We are seeking a skilled System Administrator to manage and support the organization's cloud infrastructure, servers, Microsoft 365 environment, network services, and end-user devices. The ideal candidate will be responsible for maintaining system reliability, security, and performance while providing technical support to users and ensuring smooth day-to-day IT operations.

Key Responsibilities

Cloud Administration

• Manage and maintain AWS cloud infrastructure. 
• Configure and administer EC2, IAM, S3, VPC, CloudWatch, Route 53, and related services. 
• Monitor cloud resources, performance, and security. 
• Troubleshoot cloud-related issues and implement corrective actions. 
• Review and optimize cloud resource utilization. 
• Assist with cloud deployments and migrations. 

Windows & Linux Server Administration

• Install, configure, and maintain Windows and Linux servers. 
• Perform system updates, patching, and preventive maintenance. 
• Monitor server health, availability, and performance. 
• Troubleshoot operating system, application, and service issues. 
• Manage storage, backups, and recovery procedures. 
• Implement and maintain server security best practices. 

Microsoft 365 Administration

• Manage Microsoft 365 users, licenses, groups, and permissions. 
• Administer Exchange Online, Outlook, Teams, SharePoint, and OneDrive. 
• Configure mailbox permissions and shared mailboxes. 
• Troubleshoot email, authentication, and access-related issues. 
• Manage Microsoft Entra ID (Azure AD) and security policies. 
• Support Microsoft 365 tenant administration activities. 

Desktop & Laptop Support

• Install, configure, and troubleshoot desktops, laptops, and workstations. 
• Diagnose and resolve hardware and software issues. 
• Support Windows 10 and Windows 11 operating systems. 
• Configure printers, scanners, and peripheral devices. 
• Provide remote and onsite technical support to users. 
• Prepare and deploy systems for new employees. 
• Manage device upgrades, maintenance, and replacements. 
• Maintain IT asset inventory records. 

Identity & Access Management

• Create and manage user accounts, groups, and permissions. 
• Implement role-based access controls. 
• Configure and manage Multi-Factor Authentication (MFA). 
• Perform periodic access reviews and permission audits. 
• Ensure compliance with least-privilege access principles. 

Network Administration

• Troubleshoot LAN, WAN, VPN, DNS, DHCP, and TCP/IP issues. 
• Monitor network connectivity and performance. 
• Assist with firewall, router, switch, and wireless network configurations. 
• Support secure remote access solutions. 

Security & Compliance

• Implement and maintain IT security controls. 
• Monitor and investigate security-related events and incidents. 
• Conduct security reviews and access audits. 
• Support compliance and governance requirements. 
• Maintain documentation for security and operational procedures. 

Backup & Disaster Recovery

• Configure and monitor backup solutions. 
• Perform backup verification and restoration activities. 
• Support disaster recovery planning and testing. 
• Maintain backup and recovery documentation. 

Technical Support

• Provide Level 1 and Level 2 technical support. 
• Troubleshoot cloud, server, network, Microsoft 365, and endpoint issues. 
• Escalate complex issues when required. 
• Coordinate with vendors and third-party support providers. 
• Ensure timely resolution of support requests. 

Documentation

• Create and maintain technical documentation and SOPs. 
• Document infrastructure configurations and changes. 
• Maintain knowledge base articles and troubleshooting guides. 
• Keep accurate records of IT assets and support activities. 

Required Skills

• Experience with AWS services (EC2, IAM, S3, VPC, CloudWatch, Route 53). 
• Strong knowledge of Windows Server and Linux administration. 
• Experience administering Microsoft 365 environments. 
• Knowledge of Microsoft Entra ID (Azure AD). 
• Understanding of networking concepts such as DNS, DHCP, TCP/IP, VPN, and firewalls. 
• Experience troubleshooting desktops, laptops, and end-user devices. 
• Knowledge of IT security best practices and access management. 
• Basic PowerShell or Shell scripting skills. 
• Strong troubleshooting and problem-solving abilities. 
• Good communication and documentation skills. 

Preferred Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field. 
• 1–3+ years of experience in System Administration, IT Infrastructure, or Technical Support. 
• AWS and Microsoft certifications are an added advantage.