Sr. System Administrator

KalSoft is looking for a highly skilled Sr. System Administrator to manage, maintain, and optimize secure and scalable IT infrastructure environments. The role requires strong expertise in Microsoft cloud technologies, enterprise systems administration, network management, and security best practices. The selected candidate will work closely with regional and global teams to ensure system stability, high availability, security compliance, and efficient infrastructure operations.

Location: Oman (Onsite)
Experience: 5+ Years (Relevant Infrastructure & Cloud Security)
Employment Type: Contractual Position

Key Responsibilities

• Perform daily, weekly, and monthly infrastructure health checks across Active Directory, Exchange, and SCCM environments.
• Monitor and maintain Exchange DAG health, database replication, and mail flow.
• Ensure Active Directory replication, DNS services, and domain controller health are functioning properly.
• Monitor and maintain Windows Failover Cluster health and availability.
• Monitor SCCM infrastructure, including:
  • Primary server health
  • Distribution Point status
  • SCCM SQL Server performance
• Identify potential infrastructure issues proactively and take corrective actions before service impact occurs.
• Perform troubleshooting and resolution for infrastructure-related incidents.
• Assist the client IT team in resolving server, messaging, or system-related escalations.
• Perform patch management coordination, updates, and maintenance activities for supported systems.
• Maintain system documentation, operational procedures, and health reports.
• Ensure backup, recovery readiness, and DR readiness for supported systems.
• Provide technical recommendations for infrastructure improvements and optimization.
• Work with client IT teams during incident response, maintenance windows, and upgrades.

Required Technical Skills

Core Technologies

• Microsoft Active Directory Domain Services
• Microsoft Exchange Server 2016 & 2019
• Exchange Database Availability Group (DAG)
• Windows Server Administration (2016 / 2019 / 2022)
• Windows Failover Clustering
• DNS, DHCP, and Group Policy Management

Endpoint & Systems Management

• Microsoft SCCM / Microsoft Endpoint Configuration Manager
• SCCM roles including Distribution Points
• SCCM SQL Server administration basics

Monitoring & Troubleshooting

• Infrastructure health monitoring
• Performance tuning
• Log analysis
• Service troubleshooting

Soft Skills

• Strong communication and stakeholder management skills

• Excellent troubleshooting and problem-solving capabilities

• Ability to work in fast-paced enterprise environments

• Strong documentation and IT strategy planning skills

Experience Requirements

• 5+ years experience managing Microsoft enterprise infrastructure.
• Strong hands-on experience with Exchange Server DAG environments.
• Experience managing multi-site Active Directory environments.
• Experience supporting SCCM infrastructure.
• Experience with Windows Failover Clustering.
• Experience working in production enterprise environments with high availability requirements.