Summary
Overview
Work History
Education
Skills
Accomplishments
Timeline
Generic

Jethendranath Chalasani

Kansas City,KS

Summary

20+ years of experience in system administration, software development, design, coding and testing in Client server, Mainframe Web Technology and ERP solutions. Expert level skills in writing test cases, test plans, procedures to test the functionality & performance. Expert level skills in C, C++, Java, Java Script, Oracle 11.x, Perl and Unix SHELL Scripting. Expertise in preparing Test data, Test scripts, programs, procedures, test execution, Validation and analysis. Also expertise in maintaining the documentation of all the data generated using various tools. Extensive Knowledge in Telecommunication World in Protocols and Hardware technologies (Like IP, ATM and Frame Relay). Expert level skills with White Box, Black Box, Trouble shooting and problem identification. Expert in Unix and NT programming. Expert in Using LDAP protocol. Expert in requirements gathering, business analysis, gap analysis and writing functional specifications and completely understanding J2EE and .Net architectures. Expertise with Complete understanding of System Development Life Cycle (SDLC) and Ability to work individually or in a team. Expert in design and Implementation of VOIP Applications. Expert in implementation of IMS (IP Multimedia Subsystems) in Converged wireless Network. Extensive Experience in Application Load balancer using (BIG-IP F5) or (Cisco ACE) Extensive knowledge in Network Layer 2/3 topologies. Good understanding in Layer 3 protocols (OSPF, BGP, RIP, EGP, IGRP, EIGRP).

Overview

28
28
years of professional experience

Work History

Lead Network Systems Admin/Systems Programmer/Systems Analyst

T-Mobile
Kansas City
01.2018 - 04.2026
  • Cloud Infrastructure & Infrastructure as Code (IaC)
  • AWS Provisioning: Designed and implemented AWS infrastructure using CloudFormation JSON templates to provision resources including VPC, EC2, S3, IAM, EBS, Route53, Security Groups, Auto Scaling, and RDS.
  • High Availability & Networking: Configured custom-sized VPCs, subnets, and NAT gateways to ensure secure web application deployment; managed EC2 instances with Auto Scaling and Elastic Load Balancing (ELB) for fault tolerance.
  • Automation & Compute: Built servers using AWS EC2, generated custom AMIs, and deployed scalable applications utilizing AWS Elastic Beanstalk; automated repetitive AWS operational tasks using Python scripting.
  • Storage & Security: Implemented cloud security best practices by managing IAM roles, policies, and security groups, alongside optimizing S3 buckets and EBS volumes.
  • Containerization, Orchestration & GitOps
  • Containerization: Gained extensive experience with Linux systems and virtualization in large-scale environments utilizing Linux Containers (LXC) and Docker (managing environment variables, configuration files, and option types).
  • Cluster Management & GitOps: Utilized Argo CD to manage application states and cluster configurations through a declarative, GitOps-based approach.
  • Cluster Maintenance: Performed seamless Kubernetes/OpenShift cluster upgrades with minimal downtime while managing MachineConfigPools for optimized node performance.
  • CI/CD, Build & Release Engineering
  • Pipeline Automation: Built and streamlined end-to-end continuous integration and deployment pipelines using Jenkins pipelines, Hudson, and Maven.
  • Multi-Platform Mobile CI/CD: Orchestrated Jenkins build jobs for both Android and iOS applications, utilizing Git (Stash/Bitbucket) as source code repositories and Artifactory as the release repository for .ipa and .apk binaries.
  • Release Coordination: Streamlined Configuration, Build, Release, Deployment, and Environment management processes across all core applications, conducting regular deployments to QA and Staging.
  • Database Automation: Automated the deployment of SQL scripts to Staging and Production databases to accelerate release cycles.
  • Configuration Management & Automation
  • Configuration Management: Developed Puppet manifests/modules, Chef scripts, and Ansible playbooks to automate large-scale system operations, infrastructure configuration, and application deployments.
  • Ansible Customization: Authored custom Python modules to extend Ansible functionality for specialized automation requirements.
  • Process Automation: Automated end-to-end build processes for assigned projects within the Vertical Apps teams, utilizing ANT and scheduling complex batch jobs via Jenkins.
  • Monitoring, Observability & Operations
  • Observability Stacks: Set up and configured real-time cluster and application monitoring using the EFK stack (Elasticsearch, Fluent, Kibana) and Prometheus/Grafana.
  • Monitoring & Alerting: Configured UAT and Production environments for downtime and health issues, management system reliability through regular cron job updates and AWS CloudWatch alarms, metrics, and log management.
  • Middleware Administration: Hands-on experience in the installation, configuration, troubleshooting, and performance tuning of WebLogic, Apache, and Tomcat application servers in Unix/Linux environments.
  • Collaboration, Governance & Tools Administration
  • JIRA Administration: Served as a JIRA Administrator, managing custom workflows, user permissions, and complex project configurations.
  • Source Control Governance: Managed GitLab and Bitbucket repositories, establishing branching and merging strategies, and resolving update, merge, and authentication conflicts.
  • Cross-Functional Collaboration: Partnered closely with development and QA teams to provide process design, source code control, change management, and production release support, driving continuous improvement through automation.
  • Environment: Linux, Ansible, Git version control, RedHat OpenShift, VPC, AWS EC2, S3, Route53, EBS, IAM, ELB, CloudWatch, CloudFormation, AWS Auto Scaling, Maven, Jenkins, GitLab, Unix/Linux, Shell scripting, Jenkins.

Lead Network Systems Admin/Systems Programmer/Systems Analyst

Sprint
11.2003 - 12.2017
  • SMS/MMS Messaging is the core for Text and multimedia messaging products for all Sprint Subscribers. It allows Sprint to reach its intended market for messaging utilizing an industry accepted and customer adopted technology.
  • Participated in different Phases of the messaging Platforms for the full implementation life cycles, and capacity Upgrades.
  • Responsibilities:
  • Worked with sprint Business Group to identify mismatch of all critical business requirements.
  • Worked closely with vendors in design review and identifying key impacts to messaging solutions.
  • Lead engineer responsible for providing short team and long team solutions for all production break fixes.
  • Participated in designed reviews with the business analysts to pinpoint all the requirements and design flaws.
  • Lead system Engineer for many phases to build test environment in Sprint Technology Integration Center Lab.
  • Lead engineer responsible for completely build out both LAB and Production from HW installation through network layout and software installations.
  • Experience setting up and configuring, and maintaining Sun Solaris UNIX, Linux, LAMP, Windows Server 2003/2008 and SQL server.
  • Perform and create procedures for system security audits, penetration tests, and vulnerability assessments.
  • Identify and track applicable vulnerabilities throughout the SDLC.
  • Expert in information systems security principles to network protocols, architectures, equipment, services, standards, and technology ensuring security requirements are identified and information systems are developed and implemented with required security features and safeguards.
  • Develop scripts to scan new HW/SW for platform key security assessment.
  • Lead engineer responsible for troubleshooting and fixing issue related to application, Network and system design.
  • Responsible for installing all software components, Network configuration and system configurations.
  • Developed network simulators in C, Perl, and UNIX Shell Scripts, to verify some of the interface functionality.
  • Conducted Extensive Load and performance Testing Using and MGTS and Java Based SMPP Load Generator.
  • Conducted and optimized the maximum call processing capacity of messaging Environment for feature capacity related issues in the production
  • Responsible for daily maintenance, installations, software upgrades for all Messaging components.
  • Developed and Implemented the TAP Protocol (Teleocator Alphanumeric Protocol) in Java
  • Developed Custom LDAP Browser Specific to Sprint Needs in Java.
  • Developed tool in Java to Stress Oracle Database Connections.
  • Wrote many Unix and Perl scripts for daily maintenance activities
  • Developed a Subscriber Provisioning Tool using Java Servlets, and JDBC 2.0.
  • Sys Admin for Converse/Acision SMSC and Openwave Applications.
  • Responsible for Installing and Configure the Patch and Upgrades.
  • Environment: Sun UNIX, HP UNIX, Comverse SMSC, Acision SMSC and MMSC, Openwave MMGRE, Openwave Directory Server, Perl, Unix, Shell Scripts, Java.

System Analyst/Systems Programmer

Sprint PCS
03.2003 - 08.2005
  • SMPP Load Generator: SMS Load Generator is capable of generating and receiving SMS Traffic at very high speeds, so you can stress-test all SMS-related mobile network elements. Implemented submit_sm, submit_resp_sm, deliver_sm, deliver_resp_sm, enquire_link, enquire_link_resp PDU’s in the SMPP 3.4 Specification.
  • Multimedia Streaming Load Generator: MMG Load Generator is capable of generation real time streams to the Real Streaming Server. Implement the RTSP, RTP, RTCP protocols to stress the REAL Streaming Server.
  • HTTP LoadGenerator: HTTP Load Generator is to load testing Wireless Gateways. This tool is unique to any other HTTP Loadgenerator in the market by sending HTTP Request from the Unique IP Address to simulate the requests from individual Hosts. Complete Implementation of HTTP 2.0.
  • Sprint Ready Load Generator: PTT load generator is stress tools developed in C/C++, by simulating 1000 PTT call end-to-end, complete implementation of SIP/RTSP protocol stack custom to PPT environment.
  • Responsibilities:
  • Written critical functionality scripts in reusable format and help business analysts for execution of the scripts.
  • Written User defined functions for complex test cases to verify functionality and performance of ERS Web Components
  • Evaluated the testing tools like SILK Performer, Loadrunner, Silk Test, and Winrunner.
  • Responsible for preparation of Test data in DB2 for QA Environment.
  • Responsible for optimizing the web Component performance and analyzing these results with mainframe users response data.
  • Stressed the ERS Application to ensure ERS can process all users request under heavy load, and analyzed the test results for metrics.
  • Developed a Regression suite using Winrunner, Loadrunner, perl, TCL, and UNIX Shell scripts.
  • Developed automated test scripts defining test scenarios and test procedures to test the functionality, security, and reliability of the ERS Application utilizing Winrunner and Loadrunner.
  • Executed automated test scripts to regress the functionality of ERS applications.
  • Analyzed the test results, recommended hardware upgrades, and assisted in Websphere tuning.
  • Tested all critical interfaces by writing complex scripting to ensure that ERS Web component have proven connectivity to mainframe CICS Region.
  • Generated Test results reports using crystal Reports software to serve the day-to-day status execution.
  • Environment: IBM AIX 4, Java, J Planet, Websphere, MQ Series, CICS, IBM S/390, DB2, perl, Unix Shell Scripts, Windows 2000, Winrunner 7.5, Loadrunner 7.52.

System Analyst/Systems Programmer

Sprint PCS Wireless Instant Messaging
05.2002 - 03.2003
  • The 3G Instant Messaging Project will form the basis for text messaging delivery to 3G devices, over the Sprint PCS network. Based on the proposed design, all text messaging activity (including icons and binary objects) in the “3G World” will traverse the instant messaging infrastructure. The term “Instant Messaging” is employed to describe the experience of the instantaneous “pop up” of messages on 3G devices logged on to the network. The 3G Notification offering will allow both consumer and business subscribers to continue to receive consistent notifications and messages associated with existing and future Sprint PCS products (e.g. email, instant messaging, Inter Carrier Messaging, TAP, messaging for sprintpcs web site etc.) in the 3G environment.
  • Responsibilities:
  • Completely assisted in setting up Instant Messaging Test environment (Includes building network and hardware installation) in Sprint PCS STIC Lab.
  • Installed all OpenWave Products (Like PPG, MMGRE, BMG, and Message store) that are part of Messaging infrastructure.
  • Installed and configured packages under HP Mc/Service Guard cluster.
  • Assisted in implementation of LDAP with oracle as data store.
  • Developed complex Perl scripts (Extensively used sockets) and Unix Shell scripting to help test execution team for written test cases.
  • Written and implemented High availability scripts in perl and Unix shell scripts for clustered packages.
  • Supporting the test environment and trouble shooting the problems with the external interfaces.
  • Written scripts for element level test cases (Stubbing each individual process).
  • Written Perl scripts for sending SMPP and SMTP messages and automated the end-to-end process.
  • Executed complex scenarios to make sure messaging infrastructure is WLNP compliant.
  • Developed Load generation scripts using Perl (Extensively used sockets) and Unix Shell Scripts.
  • Developed a Custom Web interface for changing configurations, provisioning users and sending SMPP, SMTP, and all type of WAP Messages from window environment.
  • Developed a Custom Web interface using Perl LDAP Module for manipulating mailboxes.
  • Developed a Regression suite using Winrunner, Loadrunner, perl, and Unix Shell Scripts, TCL.
  • Analyzed Load Test results and assisted in configuration changes for necessary messaging call flows.
  • Analyzing MDR (Message Detail Records) before sending them to the billing system.
  • Environment: HP Unix, Sun OS, Java, C++, Push Proxy Gateway, Bulk Messaging Gateway, Openwave MMG RE, Inter Mail MTA, LDAP, Perl, Unix Shell Scripts, SMPP, SMTP, TAP, Windows 2000, Winrunner 7.0, Loadrunner 7.52, Clear Quest, Sendmail, Postfix, vi.

Software Developer/Systems Programmer

Sprint ION
11.1999 - 04.2002
  • Sprint ION, a fully integrated, broadband network that turns virtually any form of communication - voice, video, data, fax, Internet. And it is a powerful new technology for Small & Large businesses, consolidates communications needs into a single high-speed solution. Sprint ION gives quickness, regardless of service, with bandwidth on demand Service Manager Management (SM2)
  • SM2 is a management tool providing configuration and service logic support to the Telcordia Service Manager (TSM) application. TSM is responsible for providing the class functionality to the Voice over packet (both IP and ATM) network. TSM provides gateway management; gateways are the various ISH’s, Passports Voice Gateway, announcement servers, and voicemail servers. SM2 provides TSM with subscriber features configuration, network configuration (ISH, access line, gateway, trunk group), translations and routing information. Participated in two releases of SM2 3.0 and 3.5. In release 3.0, SM2 supported the Voice over Internet Protocol (VoIP) network and in release 3.5; SM2 supported the Voice over ATM (VoATM) Network.
  • Responsibilities:
  • Webmaster for Sprint ION Organization, being webmaster responsible designing complete organization web site.
  • Worked as Developer in Service Manager Management Application Team.
  • Developed Java Applet Module for Service Manager Provision Trunks and Trunk Groups Assignment GUI element.
  • Written Unix Shell Scripts to Backing up all Unix Systems and Network Elements.
  • Completely Designed, developed and maintained TGS, Port cleaning and general request web applications which provides effective way of communication with other testing organizations that supports all ION critical elements (including vendors application) utilizing Java Applets, JavaServlets, Mysql.
  • Webmaster for Sprint ION Organization, being webmaster responsible designing complete organization web site.
  • Worked as Developer in Service Manager Management Application Team.
  • Developed Java Applet Module for Service Manager Provision Trunks and Trunk Groups Assignment GUI element.
  • Written Unix Shell Scripts to Backing up all Unix Systems and Network Elements.
  • Evaluated the testing tools like SILK Performer, Loadrunner, Silk Test, and Winrunner.
  • Responsible for preparation of Test data, Data Migration (Provisioning Customers for the Call Processor).
  • Developed CDR Parsing tool in Perl (Call detail records).
  • Environment: Java, C++, CORBA, MGCP, WebLogic 5.1, Java Servlets, JavaScript, JSP, Oracle8.1.5, MS-Access, MySQL, UNIX Shell Scripting, TCL Script, UNIX (HP & Sun).

System Analyst/Systems Programmer

SBC (Ameritech), Chicago
Chicago
09.1998 - 11.1999
  • Project I: Field Access System (FAS) is a project developed by Lucent technologies for Ameritech telecommunication network (FAS) Is an automated system, which facilitates 8000 field technicians with handheld computers servicing all five states to perform new installations of telephone connections and attend to complaints and repair the existing telephone connections. Servicing technicians log on to the central system (FAS) by dialing their hand-held computers to retrieve assigned work orders. Up on completion of work, they log on to (FAS) report completion of work and to retrieve scheduled new work orders. The system is designed not to assign new work orders to technicians until previous work order is accomplished and reported back to (FAS).
  • Responsibilities:
  • Performance testing was performed to verify the maximum user’s capacity of gateway access processes (GAP) server conducting different transactions at the same time up to 3000 users.
  • Stresses (GAP) server was loaded with 3000 virtual users and verified if the server could handle all Transaction efficiently at given time up to a second.
  • Responsible to Write and modify the programs into the systems.
  • Responsible for preparation and documentation of Test data, Test scripts, and validation including analysis.
  • Environment: C++, Fortress, Castle, PC/CAS, HP UNIX 10.20.
  • Project II:
  • Worked on Field Access System Administrative Module (FASAM) to help administrators support the field technicians. Administrators are the users who do technician and terminal related tasks such as maintaining the FASAM databases, and monitoring and resolving system alarms. Procedures, including login, password administration updating and deleting objects, identifying alarms, and report generation.
  • Responsibilities:
  • Created test plan to verify the functionality aspects of the application. Assisted in setting up a test environment to perform system testing.
  • Created FASAM User Capacity Test Plan.
  • Created End-to-End Transaction Performance Test Plan.
  • Created automated test scripts defining test scenarios and test procedures to test the functionality performance, security, and reliability of the application.
  • Executed Automated test scripts to verify the functionality of an application.
  • Conduct User Capacity Test Execution.
  • Conduct End-to-End Transaction Performance Test Execution.
  • Communicated MR’s (Modification Request) to developers through clarifying tracker to resolve technical issues.
  • Environment: Java, CORBA, SILK Performer, WinRunner 5.0, LoadRunner 6.0 EA, Oracle 7.3, Netscape 4.5, Windows NT.

Education

BS - Computer Science

Andhra University
India

Post Graduate Diploma - Computer Applications

Indotronix Institute of Technology
India

Skills

  • Cloud platforms: Amazon Web Services Azure, RedHat OpenShift
  • Container Orchestration Tools: Docker Swarm, Kubernetes, EC2 Container Services, OpenShift Virtualization
  • Platforms: Oracle VM Virtual Box, VMware, Vagrant, Windows Hyper-V
  • Application/Web Servers: Amazon AWS, Apache, Tomcat, JBoss, WebSphere, VMware, Web Logic, Nginx
  • Scripting languages: Perl, Python, Ruby, Bash/Shell Scripting, PowerShell, YAML, PHP, JSON Languages: C, C, Core Java, J2EE
  • Build Tools: ANT, Maven, Gradle Configuration Management tool: Ansible, chef, puppet, salt stack
  • Version Control Tools: GIT, GITHUB, SVN, Perforce, Bitbucket
  • Continuous Integration tools: Jenkins
  • Logging & Monitoring Tools: Nagios, Splunk, CloudWatch, Dynatrace, ELK, Datadog, Grafana, New Relic
  • Databases: MS SQL Server, Oracle 8/10x, Mongo DB, DynamoDB, PostgreSQL, Cassandra
  • Repository Management: Nexus, JFrog, Artifactory
  • Networking: TCP/IP, DHCP, DNS, SNMP, SMTP, Ethernet, NFS
  • Customer service skills

Accomplishments

  • AZ900
  • AZ500

Timeline

Lead Network Systems Admin/Systems Programmer/Systems Analyst

T-Mobile
01.2018 - 04.2026

Lead Network Systems Admin/Systems Programmer/Systems Analyst

Sprint
11.2003 - 12.2017

System Analyst/Systems Programmer

Sprint PCS
03.2003 - 08.2005

System Analyst/Systems Programmer

Sprint PCS Wireless Instant Messaging
05.2002 - 03.2003

Software Developer/Systems Programmer

Sprint ION
11.1999 - 04.2002

System Analyst/Systems Programmer

SBC (Ameritech), Chicago
09.1998 - 11.1999

Post Graduate Diploma - Computer Applications

Indotronix Institute of Technology

BS - Computer Science

Andhra University
Jethendranath Chalasani