Senior System Administrator - L3

L3-level, individual contributor onsite role at a Government sector

• Immediate or max 1-month joiners preferred.
• Deep hands-on Systems troubleshooting (Infra + Cloud Admin)

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