Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Chetna Duddikunta

Alpharetta,USA

Summary

Adept at driving technological advancements and operational efficiencies, I leveraged my expertise in AWS, Kubernetes, and automation with Terraform to significantly enhance infrastructure at Terminus/DemandScience. Renowned for my problem-solving abilities and strategic cost management, I have a proven track record of improving system resiliency and performance, underscored by a collaborative approach and a keen focus on innovation.

Overview

30
30
years of professional experience
1
1
Certification

Work History

Senior SRE

Terminus/DemandScience
Alpharetta, GA
05.2021 - Current
  • Responsible for creating, upgrading, and maintaining Kubernetes clusters in development and production.
  • Involved in the installation, upgrades, and maintenance of Linkerd, Traefik, ArgoCD, Karpenter, and KEDA using Helm charts.
  • Involved in creating custom Helm charts for common functionalities.
  • Responsible for cost analysis of all AWS resources and identifying the root cause for the increase or decrease in usage.
  • Closely worked with AWS, Linkerd, and Traefik support teams in resolving product-related issues.
  • Create and maintain fully automated CI/CD pipelines for code deployment using GitHub Actions and terraform.
  • Actively manage, improve, and monitor cloud infrastructure on AWS, EC2, S3, etc.
  • Managed GitHub repositories and permissions, including branching and tagging.
  • Involved in the Kubernetes, Linkerd, and Cert Manager upgrades in all environments.
  • Responsible for resolving security issues with infrastructure.
  • Involved in the migration of legacy apps to Kubernetes using Helm and Linkerd.
  • Involved in creating a data dog integration with Kubernetes and creating the required monitors.
  • Supported dev teams with AWS and application-related issues.
  • Involved in the migration of apps from Istio to Linked.
  • Involved in the migration of hosted zones and domains from one AWS account to another.
  • Involved in the automation of cert rotation for the linked control plane.
  • Provide architectural and practical guidance to software development to improve resiliency, efficiency, performance, and costs.
  • Monitoring and diagnosis of systems for optimal performance.
  • Generating well-defined and documented standard processes for the enterprise.
  • Identifying, gathering, analyzing, and automating responses to key performance metrics, logs, and alerts.

Design Engineer III

ADP
Alpharetta, GA
07.2019 - 04.2021
  • Automated build and deployment using Jenkins to reduce human error and speed up production processes
  • Create and maintain fully automated CI/CD pipelines for code deployment using cloudformation and code deploy
  • Gathered requirements and rules which currently exists for autosys jobs
  • Performed end to end design/implementation and deployed application on Apache, PHP
  • Worked on automating the file name Update changes for Autosys jobs, this application gives the users an ability to update the changes without opening any service desk tickets
  • Automated the Change orders and requests creation in service desk for major migrations and can be utilized in other apps to create/close the requests with out any manual intervention
  • Involved in the migration/testing of benefits data from workdesk(Globale 360) to docushare
  • Involved in the design/implementation of monthly stats for EHRMS/etime/Vantage etc applications for generating monthly metrics for upper management
  • Automated repetitive tasks using Ansible/GIT
  • Worked on upgrading workdesk (Globale 360) application
  • Involved in the upgrade/migration of SBM/Dimensions application to latest version and oracle 19c upgrade
  • Involved in the server migration of SBM to windows 2016

DevOps Engineer/System Administrator

Verizon Wireless
Alpharetta, GA
04.2009 - 06.2019
  • Working as a DevOps Engineer/System Administrator, which includes cloud migration/automation, AWS, and processes for builds and deployments on WebLogic Application servers, Tomcat, Netflix OSS, Open SSO, SiteMinder, and Iplanet.
  • Performed end-to-end design, implementation, and deployed the application using CloudFormation templates with autoscaling in AWS, using Jenkins, Artifactory, and GIT.
  • Built a continuous integration environment (Jenkins and CI/CD).
  • Created Docket containers leveraging existing Linux containers and AMIs, in addition to creating Docker containers from scratch.
  • Working on managing and tracking the defects status by using the JIRA tool, and planning and resolving the issues as per SLAs.
  • Expertise in Unix/Linux environments, including shell, Perl scripts, and GIT.
  • Deployed the applications on multiple WebLogic servers, and maintained load balancing, high availability, and failover functionality.
  • Involved in setting up monitoring and the collection of metrics.
  • Set up the WebLogic cluster environment, including WebLogic domains, admin servers, managed servers, and Node Manager.
  • Created and maintained technical documentation for IBM WebSphere, WebLogic, microservices environment, including network diagrams, logical and physical infrastructure diagrams, installation procedures, troubleshooting guidelines, and operational procedures.
  • Extensive knowledge in creating horizontal and vertical clusters, and adding cluster members to clusters in an effort to create a fault-tolerant, scalable, and highly available WebSphere environment.
  • Working experience in setting up, designing, and managing the Netflix OSS environment (Eureka, Cloud Config, Zuul, Ribbon).
  • Expertise in the installation, configuration, and tuning of Tomcat servers.
  • Proficient in JVM performance fine-tuning and other performance enhancements of configured and administered connection pools for JDBC connections.
  • Experience in working with Git and deploying the playbooks.
  • Managing and monitoring the JVM performance by heap size and garbage collection.
  • Deploying EJBs, J2EE applications, monitoring application servers, and web server configuration, troubleshooting, and performance issues using monitoring tools and logs.
  • Undertook day-to-day production deployments, troubleshooting.
  • Created and configured JMS queues, topics, connection factories, data sources, and connection pools.
  • Configured queue connections, factories, queue definitions, and listener ports in order to provide connectivity to the Enterprise MQ infrastructure.
  • Managing and monitoring AWS non-prod environments.
  • Installed, configured, administered, and supported Tomcat server 8.x on RHEL 7 and Solaris.
  • Involved in the design, implementation, planning, and migration of WebSphere applications to Tomcat using Spring and Apache Camel.
  • Involved in the design, installation, configuration, and deployment of Solr and HBase Indexer.
  • Designed, installed, configured, administered, and supported Pega DSS.
  • Assisted development teams throughout the life cycle on engineering application architectures and standards.
  • Created and maintained technical documentation for IBM WebSphere, WebLogic, HBase, Solr environment, including network diagrams, logical and physical infrastructure diagrams, installation procedures, troubleshooting guidelines, and operational procedures.
  • Configure virtual URLs and IP addresses in the load balancer console (Citrix NetScaler).
  • Performed maintenance of VIPs (virtual IPs), such as updating the certs, modifying service groups, and other network configurations.
  • Troubleshoot performance problems (memory/heap, CPU starvation, hung threads) using CA APM Introscope, log analyzer, thread analyzer, and heap analyzer.
  • Worked extensively in resolving security issues: upgrading from TLS 1.x to TLS 1.2, and applying several product-related patches in lower and production environments.
  • Experienced in configuring security using LDAP and SSL.
  • Experienced in creating design and operation guide documents.
  • Installation, configuration, and setup of OpenSSO agents and Access Manager.

Middleware System Administrator

Alltel / Verizon Wireless
Alphretta, GA
12.2002 - 04.2009
  • Worked on installation, configuration, and production support using Vitria Businessware
  • Worked on design, development, installation, configuration and support of WebSphere business integrator (WBI) for various Alltel Systems
  • Involved functional, technical design and development of Vitria Businessware and WBI applications
  • IDay to day support of the Alltel integration systems
  • Worked on the design,development, support of Vitria Migration to WBI
  • Involved functional, technical design of Alltel GiftCards( Alltel sells/reedems GC using smartclixx vendor)
  • Designed and developed JDBC,MQ and EJB adapters,templates and collab objects in WBI
  • Created XSL docs for Data Power configurations
  • Assisted development teams throughout life cycle on engineering application architectures and standards
  • Provided application support for Alltel POS middleware system
  • Designed and developed Businesware component monitoring solution utilizing Java and Swing
  • Analyzed and resolved issues production issues
  • Created maintained technical documentation for IBM WebSphere, WebLogic, Hbase, Solr environment, including network diagrams, logical and physical infrastructure diagrams, installation procedures, troubleshooting guidelines, and operational procedures
  • Developed reconnect logic EVA C++/Corba servers used by middleware to connect to V2 billing system
  • Involved in analysis, design and developed Wireless Number Porting system used for port in and port out of Alltel number from/to difference carriers

Contractor

IJIVA INC
Alpharetta, GA
06.2001 - 12.2002
  • Analyzed requirements and performed design, development and implementation for Mitsubishi dealer Parts
  • Connect system utilizing WebLogic 6.1, JSP, XML, EJB and Oracle 8i
  • Developed stateless session beans to perform business logic
  • Created User Interfaces in JSP
  • Helped design database using ER-Models
  • Utilized JDBC to access the Oracle data store
  • Created test cases and performed unit, system and integration testing
  • Loaded database from an XML parts information file
  • Created dealer parts inventory reports using Crystal Reports
  • Utilized Java, Oracle 8I, J2EE, EJB 2, JSP, JDBC 2.0, UML, Ant, WebLogic 6.1, Crystal Enterprise, XML, Vi, Forte, Toad, Solaris and Windows 2000

Software Engineer

Edaflow
Atlanta
05.2000 - 05.2001
  • Performed analysis, design and development for Negotiation Management, Order Cycle Integration, ePreview and Buy-Assure utilizing ATG Dynamo 5.0, JHTML, Servlets and Oracle 8i
  • Participated in requirement analysis and detail design
  • Interacted with product management and suppliers to gather requirements
  • Designed UML object models and participated in the database design
  • Developed Java Beans, Servlets and server-side Java Objects
  • Created Unit and system test cases
  • Performed Unit, system and integration testing
  • Created database scripts and loaded data utilizing SQL-Loader
  • Implemented software on Solaris platform
  • Utilized Java, Oracle 8i, J2EE, JHTML, JSP, ATG Dynamo 5.0, UML, Jbuilder 3, Together J, HTML, Servlets, JDBC 2.0, Visual SourceSafe, Apache, Tomcat, Communicator, Solaris, Windows NT 4

Software Engineer

Symbiosis Corp
Atlanta
07.1999 - 04.2000
  • Involved in the application design, E-R modeling, development and testing of E-Catalog system
  • Created UI for catalog creation and customization using JSP
  • Developed servlets to control business flow and data access utilizing JDBC and Java
  • Developed Oracle 7.3 database scripts for creation of database and loading
  • Performed unit testing and helped with integration testing
  • Utilized Oracle 8, Java, JSP, HTML, Servlets, JDBC, Netscape 4x, IE 4x, Solaris, Windows NT 4

Systems Analyst

Mastech Systems Corp
Pittsburgh, PA
07.1995 - 04.1996
  • Performed requirements gathering, design, development and testing of Indiana Child Welfare System
  • Created UI and implemented them using PowerBuilder 4.0
  • Created data access modules using PowerBuilder to Oracle 7 datastore
  • Interfaced with an IMS database to retrieve legacy data
  • Created test plans, unit tested the code and worked with customers in acceptance testing
  • Utilized Oracle 7, Shell scripts, C, C++, Windows NT, AIX

Education

MS - Computer Information Science

Nova Southeastern University
Florida

BS - Electronics

Osmania University
India

Skills

  • AWS Expertise
  • GCP
  • Docker
  • Kubernetes Administration Skills
  • AWS CloudFormation Expertise
  • Automation with Terraform
  • Helm
  • Linkerd
  • Traefik
  • karpenter
  • keda
  • Ansible
  • One Artifactory
  • Netflix OSS
  • JSON
  • YAML
  • GIT/Github Actions
  • CA Wily Introscope
  • Remedy
  • Splunk
  • Solaris
  • Linux
  • WebLogic 10/12
  • WebSphere 7/8
  • Websphere Liberty
  • Open SSO
  • OpenAM
  • Tomcat
  • Coherence
  • Redis
  • Solr
  • Hbase Indexer
  • Hadoop
  • SOA
  • EJB 11/20
  • JNDI
  • RMI
  • JSP
  • JDBC
  • XML
  • Servlets
  • ORACLE
  • MySQL
  • Hive
  • JDK
  • J2EE
  • J2SE
  • JDBC20
  • Swing

Certification

  • AWS Certified Associate Solution Architect
  • Netflix OSS Training
  • Kubernetes Training
  • Docker
  • Ansible
  • Citrix NetScaler
  • Sun Certified Java Programmer
  • Brain Bench JSP certification
  • Developing with BusinessWare 3.x
  • BusinessWare 4.1 - Developing with BusinessWare
  • WebSphere MQ System Administration
  • Technical Introduction to WebSphere
  • WebSphere Business Integration-ICS System Administration
  • WBI Server Performance on the Interchange Server
  • Accelerate and Secure XML and Web Services with IBM Datapower SOA Appliances
  • WebSphere Business Integration Server - Implementing Interchange Server and toolset
  • WebSphere Business Integration Server(WBIS) -Core Technology
  • WebSphere Business Integration Toolset-Advanced Mapping
  • WebSphere Business Integration Toolset-Advanced Cross Referencing
  • WebSphere Business Integration Toolset-Collaboration Development
  • WebSphere Application server 7.x/8.x
  • WebSphere WSRR proof of technology

Timeline

Senior SRE

Terminus/DemandScience
05.2021 - Current

Design Engineer III

ADP
07.2019 - 04.2021

DevOps Engineer/System Administrator

Verizon Wireless
04.2009 - 06.2019

Middleware System Administrator

Alltel / Verizon Wireless
12.2002 - 04.2009

Contractor

IJIVA INC
06.2001 - 12.2002

Software Engineer

Edaflow
05.2000 - 05.2001

Software Engineer

Symbiosis Corp
07.1999 - 04.2000

Systems Analyst

Mastech Systems Corp
07.1995 - 04.1996

MS - Computer Information Science

Nova Southeastern University

BS - Electronics

Osmania University

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Chetna Duddikunta