Summary
Overview
Work History
Education
Skills
Accomplishments
Work Availability
Timeline
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Sreenivasa Raju Manthena

Medchal,TG

Summary

Overall thirteen years of experience as Infra/Cloud admin with five years working as DevOps engineer. Decisive development leader experienced with infrastructure, technical solution management and deployment processes. Reviewing proposals with a practiced eye and making useful contributions to the product development lifecycle. Good verbal and written communication skills. Critical thinking Software Architect with a career spent engaging, training and helping both fellow company personnel and clients. As Solutions Architect coordinates stakeholders to drive successful development efforts and meet mission-critical business needs.

Overview

14
14
years of professional experience

Work History

Associate Principal Architeture

LTI Mindtree Ltd
12.2021 - Current
  • As a Lead need to make sure the work is getting distributed among the team members.
  • Create isolated Kubernetes environment for each dev team with complete set up of environment.
  • Extensive knowledge in all areas of software configuration management processes, including version, build and issue management, as well as build and release management.
  • Join the scrum calls to understand the requirements from dev teams and execute them without any delays.
  • Involve in the migration of applications from OnPrem to cloud (AWS)
  • Designing and implementation of CI/CD through Jenkins and Release Management.
  • Setup CI/CD for the new app’s deployment in test environments.
  • Support team in fixing of issues while build and deployments.
  • Integrate GIT into the CI environment using Jenkins
  • Deploy the applications as microservices on AWS OpenShift.
  • Expertise on troubleshooting in Build Issues and Deployment issues
  • Deploy docker containers through Kubernetes to manage the microservices using its Nodes, Pods, ConfigMaps, Selectors, Services.
  • Deploy the applications using Ansible on OnPrem servers.
  • Configure the required Ansible yaml files to get deploy of the app using Ansible Tower.
  • Provision of Infra in cloud (AWS, Google) using Terraform.
  • Fix the Functionality issues with the environment by coordinating with dev team.
  • Documentation Preparation
  • Generate reports on teamwork and submit them to management.
  • KT sessions with team members.

Principal System Administrator

Oracle
08.2018 - 12.2021
  • Provide 24x7 support for development environment servers in US, APAC, EMEA regions.
  • Responsible for CI and CD using Jenkins, Maven and Ansible.
  • Implement the K8s cluster for the application deployments.
  • Setup the CICD for the application build and deployments in various environments.
  • Automate a few daily tasks using Python scripts.
  • Create a Continuous Delivery process to include support building of Docker Images and publish into a private repository- Nexus v3.
  • Used CI/CD tools Jenkins, Git, Jira and Docker registry/daemon for configuration management and automation using Ansible.
  • Responsible for Software Configuration Management, Installing Software and maintaining the Build Environment using Ansible.
  • Installing and configuring Terraform and building the infrastructure using terraform configuration file.
  • Responsible for CI and CD using Jenkins, Maven and Ansible.
  • Adding addition disks to Azure VM upon receiving request
  • Hand of experience in writing Azure Resource Manager (ARM) to deploy.
  • Created AWS Cloud formation templates on creating IAM Roles & total architecture deployment end to end (Creation of EC2 instances & its infrastructure).
  • Configuring monitoring for Instances, cloud resource.

Subject Matter Expert

IBM
07.2012 - 08.2018
  • Worked on DPP (Defective Prevention Program), which helps in reduction of incoming Incident volume.
  • Utilized Linux Admin skills on deployment servers to make sure the servers are up and running and user, group activities.
  • Migration of servers from P2V.
  • Responsible for Software Configuration Management, Installing Software and maintaining the Build Environment using Ansible.
  • Responsible for orchestrating CI/CD processes by responding to Git triggers, human input, dependency chains and environment setup.
  • Deploy and manage the Azure Services like Virtual Machines, Web Apps, Storage, Azure Active Directory, Virtual Networks
  • Build and deploy apps in VMs in VMware
  • Working with Microsoft Azure Cloud Services and deploying the servers through Azure Resource Manager Templates or Azure Portal Setup and managed security groups, VPC’ specific to environment.
  • EC2 instances, Auto Scaling, Elastic Load Balance and AMIs.
  • Launching and configuring of Amazon EC2(AWS) Cloud Servers using AMI's (Linux/Ubuntu) and configuring the servers for specified applications.
  • Configured and managed security groups, S3, ELB and VPC.
  • Evaluation Azure VMSS to auto scale up and scale down Azure VM workloads.
  • OS Upgrades to Solaris 10 from Solaris 8, 9 by using Live upgrade.
  • Migration of servers from Physical to virtual(P2V).
  • Build of Zones, LDOMs.
  • Performance Tuning on Solaris Machines by Vmstat, Iostat, Prstat etc.
  • Live upgrade in Solaris 10 at SVM and ZFS level.
  • Troubleshoot of Zone Administration and configurations.
  • Decommission of physical servers.
  • Configuring SAN LUN in Solaris servers at ZFS and VXVM level.
  • Installing Patches on Solaris 11.
  • Involved in LINUX patching via Blade Logic

Senior System Administrator

Wipro Technologies
12.2011 - 07.2012
  • Service Activation and Deactivation.
  • OS Upgrades to Solaris 10 from Solaris 8, 9 by using Live upgrade
  • Management of user calls and vendor calls
  • Network Management - configuring network interfaces and troubling shooting network problems
  • Creating, Resizing, Importing and Deporting of Disk groups and Volumes
  • Supporting L2/L3.
  • Install, configure and troubleshooting problems associated with Veritas Cluster Server in Solaris and Linux
  • Expert in handling critical situations like Major Outages, Vulnerabilities etc…
  • Installing, Managing, and upgrading patches and packages

Infrastructure Operations Associate

Tech Mahindra
06.2010 - 12.2011
  • Package management by using RPM & YUM on Red hat.
  • Installing OS, Redhat Configuring Network, Printers and Applications. Kernel upgrade and BIOS upgrade.
  • Troubleshoot HW issues with servers.
  • Migration of data from old LUNS to New LUNS.
  • Installing, Managing and upgrading patches and packages.
  • Implementation of RAID-0, 1, 0+1, 1+0 and RAID-5 volumes
  • Disks replacement on SSA Array, Enclosure disks replacement on A5200, A5000, A1000
  • LVM Administration.

Education

MBA - Finance & Marketing

KGRL College
Bhimavaram, India
04.2006

Bachelor of Science - Computers

SGS College
Jaggayyapeta, India
03.2004

Skills

  • Operating System : Linux 5,6,7, Solaris 9/10/11, Ubuntu
  • Cloud : AWS, OCI, AZURE, GCP, Few Internal Clouds as well
  • Containerization : Docker
  • CI/CD : Jenkins, Gitlab, Azure DevOps
  • Automation : Ansible, Shell Scripting, Python
  • Tools : GitHub, Bitbucket, Maven, Sonar, Nexus,
  • Applications : Java Script, Spring boot, Nodejs, React, Angular, Python
  • Monitoring Tools : Grafana, Prometheus, CloudWatch, ELK, DataDog

Accomplishments

  • Received Executive Directory Award from one of the client Director.
  • Selected three times in Reward and Recognition program.
  • Took KT of 2000+ servers and moved the project live successfully in the span of 90 days.
  • Lead the Automation project for Servers Health Check.
  • Prepared the SOP (Standard Operation Procedures) documents for daily routine activities.
  • Done certification in VMWare Certified VCP6-DCV, Sun Certified Solaris Administrator for Solaris 10 & 11, Administration of Veritas Storage Foundation 5.0 for UNIX, SUN-Cluster Certified 4.1, OCI Certified Professional.

Work Availability

monday
tuesday
wednesday
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friday
saturday
sunday
morning
afternoon
evening
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Timeline

Associate Principal Architeture

LTI Mindtree Ltd
12.2021 - Current

Principal System Administrator

Oracle
08.2018 - 12.2021

Subject Matter Expert

IBM
07.2012 - 08.2018

Senior System Administrator

Wipro Technologies
12.2011 - 07.2012

Infrastructure Operations Associate

Tech Mahindra
06.2010 - 12.2011

MBA - Finance & Marketing

KGRL College

Bachelor of Science - Computers

SGS College

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Sreenivasa Raju Manthena