Raghunandan Keluskar Red Hat Certified
Deputy Technical Specialist @Hexaware Technologies
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WORK HISTORY
Deputy Technical Specialist @Hexaware Technologies
Navi Mumbai, IN
Responsibilities & Skills:Managing IT Service Delivery across multiple projects, ensuring smooth operations and client satisfaction.Providing end-to-end IT Infrastructure Support with a focus on stability, scalability, and performance.Experienced in Linux Server Administration – configuration, monitoring, patching, and troubleshooting.Implementing Automation using Ansible to streamline processes and improve efficiency.Supporting AWS Cloud (L1) environments for deployments, monitoring, and basic troubleshooting.Collaborating with cross-functional teams to maintain service quality and drive continuous improvements.
EDUCATION
Maharashtra Institute of Technology
HSC -science , Computer and Information Sciences and Support Services
University of Mumbai
Bachelor's degree, Computer and Information Sciences and Support Services
MSBTE- Maharashtra state board of technical education
Diploma in computer engineering (information technology), Computer and Information Sciences and Support Services
ABOUT RAGHUNANDAN KELUSKAR RED HAT CERTIFIED
Deputy Technical Specialist – Linux & Cloud Infrastructure Support with strong experience in RHEL Day 2 deployment operations and AWS Cloud L2 support. I specialize in maintaining highly available, secure, and performance-optimized Linux environments across on-prem, VMware, and cloud platforms.I have hands-on experience supporting mission-critical production systems, handling proactive monitoring, incident resolution, patching, and automation while meeting strict SLA and compliance requirements. My expertise spans Linux administration, cloud operations, security hardening, and operational excellence, with a strong focus on stability and continuous improvement.I work closely with application, network, cloud, and security teams to resolve complex issues, drive root cause analysis, and ensure reliable service delivery in 24/7 enterprise environments.Key Highlights – Linux - RHEL Day 2 & Cloud Operations:• Administer and support RHEL 7/8/9, Oracle Linux, and CentOS systems across AWS, VMware, and on-prem infrastructures.• Perform Day 2 operations including monitoring, troubleshooting, performance tuning, and system optimization• Manage user/group access, sudo policies, LVM, filesystems, kernel parameters, and security configurations• Provide AWS Cloud L2 support covering EC2, IAM, S3, CloudWatch, SNS, and Load Balancers• Configure and monitor CloudWatch metrics, alarms, logs, and notifications to ensure system health• Execute OS patching and vulnerability remediation for large-scale environments using Ansible, YUM/DNF• Perform incident, problem, and change management using ServiceNow, including RCA and post-incident documentation• Automate operational tasks using Ansible, shell scripting, and CloudFormation• Troubleshoot Linux and network issues (DNS, SSH, firewalld, routing, NFS)• Manage backup, snapshot, and recovery operations to ensure data integrity and business continuity.Technical Skills:Linux: RHEL 7/8/9, CentOS, Oracle Linux.Cloud: AWS (EC2, IAM, S3, CloudWatch, SNS, ELB), Azure (basic ops).Automation: Ansible, Shell Scripting, CloudFormation.Monitoring & Logs: CloudWatch, ELK, Grafana, Nagios, journalctl, syslog.Virtualization: VMware.Networking: DNS, DHCP, NFS, Firewalld, TCP/IP, SSH.Tools: ServiceNow, Git, Jenkins,JIRA
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