L2 System Administrator
First seen by Alion on Sep 3, 2026.
About the job :
We are seeking a skilled and experienced System Administrator (L2) to manage, maintain, and optimize Windows Server environments, Hyper-V clusters, and enterprise infrastructure.
The ideal candidate should have strong troubleshooting skills, hands-on experience in server management, clustering, patching, and IIS administration.
Key Responsibilities :
Server Administration & Maintenance :
- Manage and administer Windows Server environments (2012/2016/2019/2022).
- Perform server provisioning following standard checklists and best practices.
- Ensure system availability, performance tuning, and capacity planning.
- Monitor system health and proactively resolve issues.
Hyper-V Cluster Management :
- Configure and manage Failover Clusters and Hyper-V environments.
- Perform and troubleshoot:
1. Live Migration vs Quick Migration
2. Cluster resource optimization
3. Ensure high availability with minimal downtime.
Patch Management & Security :
- Execute monthly OS security patching across standalone and clustered environments.
- Apply patches with minimum downtime strategies (Cluster Aware Updating).
- Maintain compliance with organizational security standards.
- Perform vulnerability remediation and system hardening.
Networking & Virtualization :
- Configure and troubleshoot:
1. NIC Teaming
2. Virtual switches and network configurations
3. Ensure optimal network availability and fault tolerance.
Incident & Problem Management :
- Handle major/critical incidents, perform root cause analysis (RCA).
- Troubleshoot performance issues using tools like:
1. Performance Monitor (PerfMon)
2. Event Viewer
3. Ensure timely resolution within SLA.
IIS & Web Server Management :
- Install, configure, and troubleshoot IIS (Internet Information Services).
- Implement IIS security hardening such as:
1. Enabling HTTPS and disabling weak ciphers
2. Configuring request filtering
3. Securing application pools
OS Migration & Upgrades:
- Plan and execute physical server OS migrations with minimal business impact.
- Perform data backup, testing, and rollback planning.
File Transfer & Security Protocols:
- Manage and configure secure file transfer solutions:
1. FTP vs SFTP
Skills
System Administration, Windows Server, Hyper-V, IIS, SFTP, IT Operations, FTP, HTTP, Performance Tuning