Summary
Overview
Work History
Education
Skills
Certification
Languages
Timeline
Generic
SRINIVAS Bangaru

SRINIVAS Bangaru

Secunderabad

Summary

Highly motivated Senior UNIX/Linux Administrator with 14+ years of IT experience, specializing in system administration, maintenance, and containerization. Skilled in Kubernetes technology, with a strong track record of deploying and managing containerized applications. Adept at optimizing system performance, troubleshooting complex environments, and enhancing operational efficiency. An excellent communicator with proven collaborative abilities, seeking an opportunity to contribute technical expertise to a dynamic organization.

Overview

15
15
years of professional experience
1
1
Certification

Work History

Infra Ops Specialist

Cognizant Technology Solutions
03.2014 - Current
  • Followed all company policies and procedures to deliver quality work.
  • Improved customer satisfaction rates through proactive problem-solving and efficient complaint resolution.
  • Developed comprehensive documentation and standard operating procedures to ensure consistent Unix administration practices across the team.
  • Implemented robust patch management processes to keep systems up-to-date with the latest security fixes and feature enhancements.
  • Provided Tier-2 support for escalated issues, troubleshooting complex problems in a timely manner to minimize disruption to users'' productivity.
  • Ensured smooth transitions during server migrations by collaboratively working on comprehensive migration plans.
  • Supported developers with code deployments, environment setup, and troubleshooting application-related issues on Unix platforms.
  • Conducted regular performance analysis, identifying bottlenecks and recommending appropriate solutions to optimize system resources utilization.
  • Mentored junior team members, providing guidance on best practices in Unix system administration.
  • Reduced downtime for critical systems by proactively monitoring, diagnosing, and resolving issues.
  • Designed and implemented effective backup strategies to safeguard critical data from potential loss or corruption.
  • Assisted in capacity planning efforts by analyzing trends in resource usage and predicting future requirements based on business growth projections.
  • Enhanced system performance by optimizing Unix server configurations and implementing efficient processes.
  • Managed disaster recovery planning and execution, ensuring minimal impact on business operations during crises.
  • Increased efficiency through the automation of routine tasks using shell scripting and cron jobs.
  • Established proactive monitoring tools, enabling early detection of potential issues and allowing for timely remediation efforts.
  • Improved data security by conducting regular audits and implementing necessary updates to maintain compliance standards.
  • Installed important security and functionality patches to maintain optimal protections against intrusion and system reliability.
  • Managed onboarding and offboarding of employees.
  • Resolved issues and escalated problems with knowledgeable support and quality service.
  • Planned and implemented upgrades to system hardware and software.
  • Maintained flexible schedule and responded to after-hours and weekend emergencies.

Account/Tech. Subject Matter Expert

IBM India Private Limited
06.2010 - 01.2014
  • Administering and configuring AIX Servers.
  • ML, TL update on AIX.
  • User and security administration.
  • Installing new software / file sets, packages as and when required by the developer or business.
  • Using alternate disk installation method when upgrading or installing TL or ML on AIX Operating system.
  • Participated in AIX migration.
  • Configuring NIM master, nim resources, installing OS on NIM clients.
  • Creating file systems, checking for error report on servers.
  • Running diag against hardware of the server to diagnose any issues.
  • Exporting volume group from one node to other and adding new disks to volume group, Replacing failed devices.
  • Designing and managing disk space using AIX Logical Volume management. Strong technical skills on AIX LVM and troubleshooting.
  • Checking error reports and health check of the servers, running snap on AIX Server to analyze system issues.
  • HACMP - Monitoring servers, Starting and Stopping Cluster Services, moving resource groups across the nodes, increasing file system in cluster file system, synchronizing cluster resources and cluster verification.
  • HACMP Cluster configuration, plan, design HACMP cluster nodes, Network configuration, configuring disk heart beats, non ip heart beats, Performing failover testing, verification, synchronization.
  • Perform health checks on HACMP nodes, running cluster statistics to find cluster stability, finding resource group status etc.
  • Creating Volume Group, Logical volumes and file systems in both standalone and HA environment.
  • Checking the file systems and increase/decrease the file system if required.
  • Fixing mount issues, checking filesystem integrity, running fsck in maintenance mode on rootvg logical volumes if any corrupted lv’s in rootvg.
  • Performance monitoring using vmstat, iostat, sar, topas, netstat and nmon and analyzing these reports to figure out any performance issues.
  • Configuring NFS on the servers, working with NFS mounts and related issues.
  • Taking regular system backup using mksysb and volume group backup using savevg utilities.
  • Creating /removing paging space, checking paging space usage and increase/decrease if required.
  • Configuring system dump devices, taking system dump, estimating system dump, uploading the system vmcore files to IBM ftp site to get it analyzed by IBM engineers.
  • LPAR operations including scheduling operations, troubleshooting activation errors, configuring, and using system profiles, and activating and shutting down partitions, Power on/off partitions.
  • Create partitions, partition profiles, and system profiles, activate partitions, and Schedule operations for partitions, dynamic operations for adding, moving, and removing memory, processor resources, and I/O slots.
  • VIOS configuration – create server and client virtual adapters, virtualize disks, network, using VIO server. VIO server backup, dual VIO server configuration, Shared Ethernet adapter, Configure dual path disks to VIOS client.

Education

Master of Commerce

Master of Business Administration IT Systems

Skills

    Unix AIX

    Linux

    Cloud

    DevOps

    Kubernetes

    Shell Scripting

Certification

• IBM Certified System Administrator AIX 7.

• IBM Certified HACMP Administrator.

• IBM Certified Virtualization Administrator.
• RedHat Certified System Administrator.

• Google Cloud Certified Professional Cloud Architect.

• AWS Certified Solutions Architect

Languages

English
Telugu
Hindi

Timeline

Infra Ops Specialist

Cognizant Technology Solutions
03.2014 - Current

Account/Tech. Subject Matter Expert

IBM India Private Limited
06.2010 - 01.2014

Master of Commerce

Master of Business Administration IT Systems

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SRINIVAS Bangaru