Jabraj G

Devops Engineer | OCI | Linux System Administration

Devops IT professional with 9 years of experience, skilled in Kubernetes, Chef, AWS, Linux System Administration, Splunk, Spinnaker, Zabbix, Vertica, Tableau. Proven ability to solve complex problems, with strong verbal and written communication skills. Seeking a challenging role to apply technical expertise in a dynamic IT environment that fosters professional growth. Flexible, hard-working, and a team player, with a willingness to learn and adapt to new technologies.

• User & Group Administration (creating, modifying & deleting users & groups) in Active Directory
• Building, Managing the various Cerner Cloud based services using Linux servers (Both OEL & RHEL v6.x & v7.x).
• Contribution towards two sub teams in parallel. Responsible for leading major projects in first team and providing assistance with issues and blockers. Contribution towards second team which emphasize on DevOps Tools and K8’s Cluster management.
• Building, Managing Kubernetes cluster which resides in different CCR's (Cerner Cloud Regions) where Spinnaker/Jenkins has been used for the cluster deployment and Packer Images, Terraform Configuration has been used for the cluster configuration and new relic/helm-monitoring has been used for the cluster monitoring.
• Took complete ownership of Building first K8's cluster in AWS which includes creating control plane components and worker nodes using EC2 instances.
• Creating/Deploying/Modifying cluster configuration which might include scenario's such as creating a new Namespace for any new application deployment. Modifying any cluster configuration to provide access to any new associate and deploying the changes across all clusters using spinnaker.
• Troubleshooting any K8's cluster issues and resolving it efficiently. Examples may include failing deamon set roll outs, worker node down etc.
• Supported On-Call of all critical systems on a 12x7 rotational basis shift for all the services and applications managed by my team.
• Troubleshooting incidents (unexpected production downtime) for both system and network related issues and performing Root Cause Analysis (RCA) to prevent the further occurrence of the same issue by actively interacting with Developers and also performing Go-Green Metrics to ensure high availability and high client satisfaction. Interacting directly with the clients at the time of incidents.
• Managing all server configurations in source controlled fashion using chef in GitHub and updating the documentation/workplans to maintain the standards.
• Performing a weekly deployment of Splunk servers(various healthcare services offered for clients) using CICD tools such as github, jenkins, Terraform and Packer to board all production services in different Cerner Cloud Regions (CCR’s) deployed in Linux Servers.
• Expert in Chef Troubleshooting and managing servers using chef. Some key regular operation include Bootstrapping nodes to chef server through knife. Creating/Applying environments, recipes and roles to new servers. Troubleshooting cookbook dependencies.

LINUX & WINDOWS

• Linux & Windows servers vulnerability patching.
• Patching & upgrading both physical & virtual servers.
• Upgradation of Linux version. Such as version from 6.x to 7.x. Ø Creation, partition & management of Disks using LVM concept.
• Linux network configurations such as TCP, UDP, NFS.
• Applications deployments on the servers.
• Root cause Analysis & troubleshooting the servers.
• Automating few regular tasks through Shell scripting.

AWS

• Launching EC2 instances as per the requirements.
• Working on S3 buckets, RDS databases, CloudFront, Route 53. Ø Load balancing & autoscaling on AWS.
• CI/CD using Code Build, Code Deploy, Code Pipeline
• Configuration of VPC & management of the same.
• Knowledge on serverless concept i.e. Lambda services.
• Extensive knowledge on the databases, RDS, Dynamo DB, etc.

Splunk

• Creation of Splunk indexes & roles in multiple Splunk environments.
• Bi-weekly Splunk deployments on the Indexer nodes, search head deployment nodes & license master nodes.
• Creating a new Splunk cluster environment on AWS.
• Configuration of Splunk alerts & notifications.
• Managing Splunk forwarders & the installations on Linux & Windows servers.
• Troubleshooting user requests.

Chef

• User access administration & managing different organizations.
• Bootstrapping nodes to chef server through knife.
• Applying various environments, recipes & roles to the new servers.
• Troubleshooting cookbook dependency issues & resolving the chef-client issues. Ø Backend Chef services administration.

Zabbix

• Installations & configuring Zabbix server/agents.
• Creating the triggers, items, actions & templates.
• Upgrading Zabbix in different environments.
• Troubleshooting various Zabbix server, proxy & Zabbix user issues.
• Enabling the monitoring on different servers through Zabbix.
• Managing the complete architecture of Zabbix.

Vertica

• Installations & configuring Vertica server.
• Upgrading Vertica versions in different environments.
• Troubleshooting issues with Vertica server.

Tableau

• Installations & configuring Tableau server.
• Upgrading Tableau versions in different environments.
• Troubleshooting issues with Tableau server.

Terraform

• Building Infra on OCI using Terraform scripts.
• Troubleshooting issues with Terraform.

Ansible

• Setting up Ansible agentless worker on Linux server.
• Troubleshooting issues with Ansible workers.

Other

• Git repository creations & managing the repositories.
• Logging PR’s, branching & Merging the source code in GIT.
• Load balancing using Keepalived.
• Extensive knowledge on New Relic.
• SSL Certificate renewals through F5.
• Following the ITIL standards.

• Strong problem-solving skills
• Exceptional verbal and written communication
• Skilled in managing interpersonal relationships diplomatically
• Eager to learn and adapt quickly
• Effective team leader and facilitator
• Expertise in automation and process optimization
• Experience in training and mentoring associates
• Proficient in troubleshooting technical issues
• Analytical thinker with strategic planning abilities
• Fast learner with a commitment to continuous improvement

• AWS, VMware, Linux D & T(Diagnosis & Troubleshooting), Pragathi Technologies Bangalore, September 2017
• Red Hat Certified System Administrator - RHCSA, 160168-605, September 2016 - September 2019
• Google Cloud(CPO200), Google(ROI Training) Bangalore, October 2016
• Red Hat Certified Engineer(RHCE), Rostris Infotech Pvt Ltd, Bangalore, September 2016
• AMCAT certification, January 2016
• ASP.NET certification, Systel Info Solutions, Bangalore, December 2014

• Father's Name: GNANADASS.E
• Mother's Name: RAJESHWARI.G
• Date of Birth: 12/01/1992
• Gender: Male
• Nationality: Indian
• Marital Status: Married

• Playing Cricket
• Playing Football
• Playing Badminton
• Cycling
• Swimming
• Travelling

• English
• Tamil
• Kannada
• Hindi
• Malayalam
• Telugu

• Received best performance award at Position2 in June 2015
• Received Pat on Back (POB) award in December 2018
• Received Bravo award and Appreciations from Manager and Leaders at Cerner

I hereby declare that the above stated information is true & correct to the best of my knowledge & justification.

[Jabraj.G] 

Bangalore