• Implemented and evangelized Internal Developer Platform based approach to align teams with best practices and principles to enable them with self-service-based capabilities ranging from infrastructure provisioning, management to devops enablement and observability.• Supported more than several products serving 5+ million users and internal services running on more than 100 Kubernetes clusters from infrastructure and observability standpoint while meeting SLAs and 99.99 percent availability requirements.• Developing and testing IAC code in Terraform for AWS.• Created automated pipelines for the cluster creation, environment management and application deployment specifics clusters on-demand, environment on-demand, restructured config data management, traffic management, SSL Securitization, DNS restructuring and optimized the platform.• Worked in a team troubleshooting production and non-prod issues for EKS and KOPS based Kubernetes Clusters (50-200 instances each).• Implemented Monitoring and Observability of K8s platform using Wavefront and Terraform.• Configured and troubleshooted Argo (GitOps) CRDs and Controllers for deployment pipelines.• Implemented multilevel health checks with automated failover across Route53, ALBs and Deployments for several applications.• Troubleshooted container sidecar networking for bootstrapping initialization, Splunk universal forwarders and various networking/storage adapters. Implemented custom Blue-green, Canary deployment methods using Argo.• Designed application resiliency patterns and practices to improved deployment speed• Worked and support Gateway Platform that provides routing, authentication and authorization, throttling and DNS Manager capabilities.• Helped teams develop Disaster Recovery plan and worked closely with them to perform and support Game Day DR tests.• Resolved EKS production issues like scaling, node sizing and node affinity, traffic distribution, resource quota management etc.

• Modernization of infrastructure including migration, deployment and maintenance of applications in AWS GovCloud.• Created automated pipelines for the cluster creation, environment management and application deployment specifics clusters on-demand,• environment on-demand, restructured config data management, traffic management, SSL Securitization, DNS restructuring and optimized the platform.• Worked in a team troubleshooting production and non-prod issues for EKS and KOPS based Kubernetes Clusters (50-200 instances each).• Implemented Monitoring and Observability of K8s platform using Wavefront and Terraform.• Configured and troubleshooted Argo (GitOps) CRDs and Controllers for deployment pipelines.• Implemented multilevel health checks with automated failover across Route53, ALBs and Deployments for several applications.• Extensively worked on developing processes, knowledge bases, runbooks and documentation to support developers through the entire life cycle of usage of the containerization platform by leveraging tools like Slack, Confluence, Stackoverflow, JIRA, ServiceNow, Pagerduty etc.• Worked with Product Engineering, Incident management, Cloud Operations, Security Teams and positively contributed to strengthening relationships for enhanced communication and customer response times.• Troubleshooted container sidecar networking for bootstrapping initialization, Splunk universal forwarders and various networking/storage adapters.• Designed application resiliency patterns and practices to improved deployment speed.• Resolved EKS production issues like scaling, node sizing and node affinity, traffic distribution, resource quota management etc. Performed EKS Infrastructure setup and management using Terraform.• Collaborated with the infrastructure team to optimize resource utilization and improve scalability using Kubernetes autoscaling features.

Project: Migration, deployment and maintenance of applications from on premise to AWS infrastructure.• Setup, configuration, deployment & scaling of Java/Python based web and worker applications on AWS Elastic Beanstalk.• Application deployment to Pivotal Cloud Foundry (PCF) and created BlueGreen deployment scripts on PCF.• Developing CloudFormation templates for building and configuring AWS resources like VPC, DynamoDB, ELB, RDS, EC2, ECS and S3 as part of the automation.• Monitoring, optimizing, enforcing of cloud security standards using tools like Security Monkey, Trusted Advisor and Nessus Tenable.• Automated infrastructure creation and management using Chef and Terraform templates.• Application Integrations and Webhooks involving GitHub, Sinatrarb, Sidekiq, Git, Dynect APIs for asynchronous processing of Route53 DNS record requests.• Responsible for cloud governance, cost management, usage optimization and monitoring using Cloud Custodian, AWS-dashing, Monitis, Sumologic, Librato and Netflix ICE• Authentication Prototyping for granting applications to use AWS resources using Active directory credentials by setting up SAML Providers, IDP, roles, trust policy, permissions policy and AssumeRoleWithSAML API.• Setup ELK Stack using CloudFormation templates.• Developed Backup and Recovery solution using AWS Lambda.• Users, Roles and Resource Management – created users, roles and authorization using AWS IAM.• Developed Dashboards - Java-based collectors and plugins to integrate Hygieia with Gitlab, Teamcity Build, Teamcity Deploy.• Automated configuration and part of deployment creating Ansible playbooks.Environment: AWS, PCF, Chef, ChefSpec, Rubocop, Knife, Foodcritic, Cloud Formation, Linux, Docker, Elastic Beanstalk, Route 53, ECS, S3, DynamoDB, SAML, IAM

Projects: Develop OpenStack Lab and Litmus test framework tools.The Openstack Lab project involves architecting, designing and developing a tool to deploy and use openstack on demand. The tool also streamlines development via integrated commands to handle SDLC pipelines and provide ephemeral environments for quick service deployment. Litmus Framework project is a service for launching and storing results of automated Openstack cloud test results.• Developed the OpenStack compute and monitoring features using the lab tool.• Designed and developed the lab tool and integrating with Pulp, Go CI/CD, Jenkins, Vagrant, Artifactory.• Designed and developed Litmus Framework tool.• Build test result store using celery job and DB agent.• Go CD pipelines for continuous integration and deployment.• Tools Setup and Integration - Celery with Sanity, Rally, Tempest, Selenium.Environment: Openstack (Nova, Neutron, Cinder, Glance), Vagrant, Celery, Ansible, Puppet, Pylint, PEP, Celery, RabbitMQ, MySQL, Rally, Sanity, Linux, Tempest, Selenium, Artifactory, Flask

Projects: Build out of Openstack based internal cloud data center.The project involves architecting, developing and deploying a multi-tenant Cloud platform.• Designing and implementing network virtualization infrastructure using VMWare NSX.• Designing and implementing Cloud platform using Openstack, Ceph, Cobbler, Chef, HAProxy .• Responsible for writing Chef Recipes, tests using ChefSpec, Kitchen.• Responsible for writing performance tests using Tempest, FIO to perform capacity testing.• Responsible for building monitoring and logging using Sensu, Collectd, Rsyslog.• Responsible configuring hypervisors with network bonding, bridge to OVS.• Developing integration (for cinder backed Ceph, NSX, keystoneOpenLDAP) prototypes using Devstack.• Setting up and testing CPU, Network, Block QOS for different custom Nova flavors.• Responsible for writing Heat templates.• Testing using Rally, reporting bugs and applying patches to Cloud platform.• Working on Ansible playbook for deploying openstack in a development environment.Environment: Openstack (Nova, Neutron, Cinder, Glance), NSX, Ceph, Cobbler, Knife, Chef, Vagrant, Chefspec, Rspec, Kitchen, Jenkins, Berkshelf, ChefDK, IPMI,Neutron, Nova, Horizon, Cinder, VMware ESXI, Linux, Ubuntu, OVS, Netboot, FIO, Tempest, VirtualBox, Quanta, HP ILO, Python, Ruby, Ubuntu, Ansible

· Developed highly concurrent low latency server stack using NodeJS, MongoDB, GridFS, Redis, SQS, Java, Storm on AWS.· Worked on integration of Glyph Platform with third-party data service provider using Yodlee SOAP SDK.· Developed the REST API on NodeJS using Express/Connect framework.· Responsible for deployment and monitoring in production environment.· Configured NodeJS to work with Mongodb replication environment. · Configured NGINX to work with MongoFS to serve user profile images using nginx-gridfs.· Enhanced the architecture for improving performance to handle 150 users/sec using Amazon Simple Queue Service, workers pattern, local node-cache module, mongodb secondary read replica & loader.io, mongotop, mongostat tools.· Designed schema of Glyph datamodel for storing complex creditcard rules and financial institution information using JSON.· Developed asynchronous code using AsyncJS and StepJS.· Secured REST APIs using express-http-auth module.· Performed memory & GC tuning of NodeJS to maximize performance.· Built a framework using socket.IO to relay performance metrics to a central performance monitoring server.· Developed and deployed Java data processing topologies using Storm Java framework.· Created open source Node-DRPC framework using Apache Thrift to integrate NodeJS with Storm server available at : http://github.com/rkatti/node-drpc· Responsible for project management, milestone tracking in Phabricator using SCRUM Agile based methodology.· Built Hadoop batch jobs to migrate user data.

Technical lead developing Java/J2EE based web applications.

Was part of development team of Kaplan Learning Platform and Kaplan test authoring system.

Was developing C++ based web traffic analysis systems for I/PRO corporation.

Software engineer responsible for porting Versant ODBMS to Red Hat Linux.

Software consultant responsible for maintaining C++, UNIX based CADDS system.