Senior System Administrator

Roles and Responsibilities

On-Premises Administration (Windows s Linux):

• Deliver L3 troubleshooting and resolution for Windows Server (2016–2022) and Linux (RHEL, Ubuntu, CentOS)
• Administer Active Directory, DNS, DHCP, Group Policies, and network file services
• Deploy and optimize virtual machines using VMware vSphere and Microsoft Hyper-V
• Manage disk volumes, backup schedules, and patch baselines across systems.
• Coordinate escalations with OEMs and vendors

Cloud Infrastructure (AWS/Azure):

• Configure and manage IaaS components (VMs, Load Balancers, VPC, Storage, IAM, etc.)
• Configure and maintain cloud infrastructure using AWS EC2, Azure VMs, IAM, S3/Blob, Route Tables, Load Balancers.
• Troubleshoot cloud outages, VPC connectivity, access control issues, and performance bottlenecks
• Support hybrid cloud adoption and application migrations
• Assist with cloud integration, lift-and-shift migrations, and cost optimization practices.

Monitoring s Automation:

• Implement monitoring via Nagios, Zabbix, AWS CloudWatch, Azure Monitor
• Create PowerShell and Bash scripts for automation, health checks, and maintenance
• Use PowerShell scripts, Bash, or automation tools (e.g., Ansible) to streamline administrative tasks.
• Own alert handling, event correlation, and SOPs for infrastructure stability

Technical Escalation s RCA:

• Take ownership of critical escalations, conduct RCA, and collaborate across cross-functional teams (Network, App, Cloud).
• Own end-to-end incident resolution and root cause analysis (RCA)
• Proactively address recurring issues and participate in problem management
• Collaborate with IT, cloud teams, and application owners for in-depth troubleshooting

Candidate Profile

• Experience: 10–12 years in enterprise IT infrastructure
• Role Type: Individual contributor, Hands-On Technical Specialist
• Strong communication skills: Able to document, articulate, and coordinate effectively with technical and non-technical stakeholders.
• Scope: L3 escalation support

Preferred Qualifications

• B.E./B.Tech/MCA or equivalent in Computer Science / IT
• Certifications (Preferred):
• Microsoft Certified: Windows Server / Azure Administrator
• AWS Certified SysOps Administrator
• RHCE / RHEL Certified Admin