- Architect AWS Environments: Extensive experience in architecting AWS environments from scratch using CloudFormation.- Migration Expertise: Provide subject matter expertise and hands-on support for the National Library of Medicine’s migration from legacy data centers to an AWS multi-region architecture.- Automation & Infrastructure as Code: Drive automation through Infrastructure as Code (IaC) using AWS technologies such as CloudFormation and Python Lambda functions.- AWS Services Knowledge: Hands-on experience with a variety of AWS services, including EC2, NAT Gateways, VPCs, Route 53, ELBs, CloudFormation, S3, Security Groups, and NACLs.- Design & Implementation: Design, implement, and maintain AWS infrastructure and services to support the National Library of Medicine’s operations.- Process Improvement: Implement process and quality improvements through task automation and Infrastructure as Code (IaC).- Security-Focused System Development: Developed an AWS AMI build system using Packer, Red Hat Kickstart, Ansible, VirtualBox, and CloudFormation, ensuring compliance with CIS security standards.

- Linux/Unix Administration & Virtualization: Managed planning and architecture for Linux/Unix environments and VMware ESX virtualization, with experience in Red Hat, AIX, CentOS, Oracle Exadata Linux, and Solaris.- OS Installation & Management: Installed, configured, and managed OS; remediated vulnerabilities, troubleshot issues, and coordinated with vendors for bug fixes or hardware issues.- Cloud Platforms: Worked with AWS and Google Cloud for cloud management and virtualization.- Scripting & Automation: Developed automation solutions using Shell/Bash, YAML, and Ruby to streamline system administration tasks.- Disk & File System Management: Managed disks with LVM, configured file systems, set disk quotas, and set up file sharing via NFS/SAMBA.- Automation Tools: Automated OS administration tasks using Puppet, Ansible, and Shell/Bash scripting, ensuring security compliance through patching and vulnerability remediation.- Security & Procedures: Developed Linux/Unix security policies and maintained systems' security compliance. Managed patching through Satellite Server and scheduled patches using SSM.- Enterprise Support: Supported Unix applications and business operations. Utilized tools like Git, Confluence, Jira, ServiceNow, and Splunk for task management and monitoring.- Compliance & Patching: Ensured systems were patched, bug-free, and compliant. Managed patch deployment and security using automation.- Project Management & ITIL: Followed ITIL, LEAN, and Cognizant guidelines for issue resolution and project delivery within defined SLAs.- Continuous Improvement: Contributed to process improvements, optimized resource usage, and updated documentation/knowledge bases (e.g., Confluence, ServiceNow KB).

- Managed Offshore team- Managed almost 4000 Servers (including VMs, physical servers, SPARC boxes)- Involved in all Planning, Architecture, System Admin aspects of Linux Administration- Worked on Installation, Configuration, Maintenance, and Administration of RedHat Enterprise Linux 5/6/7- Worked on Amazon Web Services as Cloud Management/Virtualization and SAN/NAS/Storage solutions with NetApp- Worked on Automation Tools like Puppet, Ansible, and Shell scripting- Worked on Linux OS Patching and Package Management via Satellite Server and Solaris OS Patching- Coordinated with Vendors for any Hardware Faults- Troubleshot NFS, Samba issues in Linux- Worked on File System Administration, setting up Disk Quota, configuring backup solutions- Worked on Managed Disks and File Systems using LVM on Linux- Worked on Troubleshooting Day-to-Day issues- Worked on Security Standards and Implementations- Worked with Oracle Database and Network teams to ensure smooth server migration- Worked on Nagios Monitoring Servers for CPU, Memory, and Disk Utilization for performance monitoring- Utilized Enterprise Change Control system to schedule server/environment changes- Supported Oracle DBAs/Application team to resolve issues and assist with migration activities- Involved in DR testing and documentation- On-call 24x7 rotational support- Worked on Virtualization: vSphere & Xen to VMware Migration- Worked on Firmware updates on Host hardware- Worked on Update Manager for ESX Patches: Create Baseline, Attach Baseline, Scan, Enter in Maintenance Mode, Remediate the ESX server, Exit Maintenance ModeTools and Technology worked and gained knowledge:- Operating System: RedHat Linux, Oracle Solaris, Suse Linux- Veritas: VxVM Administration, VCS Administration- Virtualization: ESX VMware Virtualization, Solaris Zones- Automation Tools: Ansible, Puppet, Shell Scripting- Monitoring Tools: Nagios

- Worked as Unix System Engineer. Managed almost 4000 Physical SPARC Servers, including M Series, T Series, and V Series Servers.- Lead for project ISec security implementation to identify defects, risks, and security audits. Worked on automation and scripting for Unix environments.- Troubleshot Day-to-Day issues: NFS, Samba file sharing, File system administration, setting up disk quotas, configuring backup solutions, and managing disks and file systems on Unix. Worked on OS patching, including Live Upgrade.- Worked with ticketing tools like Remedy and ServiceNow to track incidents, problems, changes, and service requests.- Involved in Vendor Coordination for any hardware issues.

- Server Installation, Configuration, Maintenance, and Administration of RedHat Enterprise Linux, SuSe Linux, CentOS, and Sun Solaris.- User administration and all other OS troubleshooting.- File System Administration (LVM/SVM) and Server Management.- Troubleshot NFS, Samba issues in Linux.- Patch and package management.- Worked on Veritas products like VxVM Administration, VCS Administration.- Worked on Virtualization: ESX VMware Virtualization, Solaris Zones.- Worked on Monitoring Tools: Nagios.- Worked on Shell scripting and Automation Tools like Ansible, Puppet to automate tasks.- Following ITIL standards: Worked on tickets, maintaining defined SLAs, and escalation of issues.- Worked on Incident/Problem, RFC’s, Service Request, and Change Management.- Customer communication: Weekly client meetings and daily offshore meetings.- Vendor Management.

- Worked on end-to-end OS Administration and Virtualization, including Enterprise Solaris and RedHat installations, configuration, management, patching, application support, server networking, hardening tasks, break/fix, Vulnerability Remediation, problem solving, isolation strategies, diagnosis, and repair.- Automated Unix/Linux OS administration tasks using various Automation tools.- Developed procedures for Linux security and performance improvement.- Configured and Managed Disks on Unix Operating Systems: File system administration, setting up disk quotas, file sharing using NFS and SAMBA, and configuring backup solutions.- Supported web applications (Apache, Tomcat, and IIS).- Managed load balancers.- Supported business delivery and managed day-to-day tasks.- Identified and resolved system issues in a timely manner.- Coordinated with vendors for hardware faults, vulnerabilities, new patches, and bug fixes.

- Network Administration and Server Management.

- Worked as Team Lead for engineers working at the client location.- Worked on end-to-end Operating System Administration and Virtualization.- OS installation and maintenance, including Microsoft Windows Server.- Worked on desktop systems, providing end-to-end support like installations, configuration, management, networking, break/fix, vulnerability remediation, diagnosis, and repair.- Worked on hardware issues related to HP, Dell servers, workstations, printers, modems, and network devices.- Configured and Managed Disks on Operating Systems: File system administration, setting up disk quotas, file sharing, and configuring backup solutions.- Supported business delivery and managed day-to-day tasks.- Identified and resolved system issues in a timely manner.- Coordinated with vendors for hardware faults, vulnerabilities, new patches, and bug fixes.