SASI KUMAR KALIGITHI
NexCore Systems, Inc.
Schaumburg,IL
1
Certification
8
years of professional experience
Dynamic Data Center Technician with proven expertise at NexCore Systems, Inc. in optimizing server deployments and enhancing network reliability. Skilled in hardware diagnostics and incident management, I excel in maintaining operational excellence while fostering collaboration across teams. Committed to continuous improvement and compliance with operational standards in high-pressure environments.
Work History
Data Center Technician
2 Years 10 Months- Executed routine OS patching, system health assessments, infrastructure monitoring, and log analysis in accordance with established Standard Operating Procedures (SOPs) to maintain system availability, reliability, and operational stability.
- Diagnosed and resolved hardware, operating system, and infrastructure incidents through enterprise ticketing systems, ensuring timely incident response, SLA compliance, and appropriate escalation of critical issues.
- Performed post-maintenance validation, hardware readiness assessments, and physical cabling verification to confirm system functionality and operational readiness following scheduled maintenance activities.
- Configured, provisioned, and validated network switch ports, VLAN assignments, and server connectivity to support new server deployments and ensure reliable network communication.
- Collaborated with network engineering, systems administration, and infrastructure teams to coordinate planned maintenance, troubleshoot complex incidents, and minimize service disruptions.
- Maintained accurate technical documentation, change management records, incident reports, and operational procedures to support knowledge sharing, audit compliance, and continuous service improvement.
- Supported mission-critical data center operations in a 24/7 environment, participating in shift-based operations, on-call support, incident response, and operational handoffs to ensure infrastructure continuity.
Data Center Technician
3 Years 2 Months- Installed, configured, and provisioned enterprise server hardware, performed operating system (OS) imaging, and executed post-deployment validation to ensure production readiness and operational compliance.
- Executed rack-and-stack operations, including server mounting, copper and fiber-optic cabling, cable routing, labeling, and structured cable management to maintain rack organization, airflow efficiency, and infrastructure accessibility.
- Diagnosed and troubleshot server hardware failures involving storage drives, memory modules (DIMMs), RAID controllers, and network interfaces; performed component replacement and hardware validation to restore system functionality.
- Validated network connectivity by verifying switch port configurations, VLAN assignments, IP addressing, and physical link status to ensure reliable communication between servers and network infrastructure.
- Investigated infrastructure alerts, system performance degradation, and connectivity issues using Linux/UNIX command-line utilities, Secure Shell (SSH), and out-of-band management interfaces, including IPMI and HPE iLO.
- Managed incidents, service requests, and hardware maintenance activities through Jira, maintaining detailed troubleshooting records, root cause analysis (RCA), and resolution documentation to support incident lifecycle management.
- Maintained accurate infrastructure asset inventories, rack elevation diagrams, hardware configuration records, and maintenance documentation to support asset lifecycle management, traceability, and audit readiness.
- Performed hands-on infrastructure deployment and maintenance activities in physically demanding data center environments, adhering to operational safety standards while handling equipment, working in confined rack spaces, and supporting extended standing and walking requirements.
Education
Master of Science - Computer And Information Sciences
Skills
Data Center Operations: Server Deployment
Rack & Stack
Hardware Installation
Asset Management
Preventive Maintenance.
Server Hardware: Hardware Diagnostics
Break-Fix
RAID
HDD/SSD
RAM
PSU
NIC Replacement.
Operating Systems: RHEL
Ubuntu Linux
UNIX
Windows Server
OS Imaging & Patching.
Networking: TCP/IP
VLAN Configuration
Switch Port Provisioning
Fiber Optic & Copper Cabling.
Remote Management: SSH
IPMI
HPE iLO.
Monitoring & Troubleshooting: System Health Checks
Log Analysis
Root Cause Analysis
Incident Resolution.
ITSM & Documentation: ServiceNow
Jira
SLA Management
SOPs
Change Management.
Scripting: Basic Bash and Python.
Certification
Schneider Electric DCCA
Cisco CCNP Data Center
Timeline
Data Center Technician
NexCore Systems, Inc.
12.2023 - 10.2026Read More
Data Center Technician
Stratos Infrastructure Solutions
03.2019 - 05.2022Read More
Auburn University
Master of Science from Computer And Information Sciences
Read More