Vishnu Sai

[email protected] 358 2229Over 6 years of diversified experience as a Performance Engineer with extensive experience in using automated tools HP Load Runner, J meter & Silk Performer. Experience in planning Performance strategy, setting up environment for testing applications. Being a self-starter, motivated team player with leadership abilities, excellent communication and interpersonal skills.

Extensive experience in implementing all stages of Performance Engineering Lifecycle, which includes Requirement gathering, Performance Engineering and Performance Analysis.

Experience in understanding application performance requirements, developing performance engineering strategies, wide-ranging exposure to complete performance testing using different protocols and usage of performance monitoring tools.

Expertise in performance testing Web based, Client-server and Middle ware applications.

Experience in creating Test plan, Work plan, designing test scripts and test scenario’s according to performance testing requirements.

Efficient Performance engineer with knowledge in Performance testing tools like Load runner, J meter, Silk performer.

Worked on various Load runner & J meter protocols like Web (HTTP/HTML), Web services, Java V user, Oracle NCA, SAP, FLEX, Winsock, Citrix.

Hands on experience with system testing methodologies like Functional, Performance, Load, Stress, Endurance, Data base failover, User acceptance and Integration testing.

Advanced programming & trouble shooting skills in C, C++ and Java for debugging load runner scripts.

Expertise in setting up Test environments & Test data for Performance testing.

Experience in monitoring Web Servers, Application Servers such as Microsoft IIS, Web logic and Database Servers Such as Oracle &SQL Server during Performance Testing executions.

Worked with different monitoring tools like Wily Intro scope, Dyna trace, Fog light, J console, Web logic console, Oracle enterprise manager Grid control, Site scope etc.

Expert in creating Wily Intro scope Management modules, alerts, actions, alert downtime schedules, calculators, dashboards, metric groupings and reports for environments in test.

Got trained by CA education on Wily Intro scope V 9.1.

Experience performance tuning of servers through Oracle SQL tracing via Explain plan, TK Prof, ADDM & AWR reports.

Developed Click stream and user requirement specification documents.

Experience with Fast paced environment like Agile Methodology.

mailto:[email protected]

[email protected] 358 2229

Self-motivated, willing to assume responsibilities, can work independently, lead or work within a team environment.

Experience in exploring & introducing tools involved in monitoring, measuring, debugging, coding and tuning for improved product performance.

Worked closely with management in evaluating current system performance and making decisions on future development. Ability to work on multi-platform environments like Windows, UNIX with clear understanding of file system, environment variables and file transfer protocol (FTP).

Technical Expertise

Operating Systems AIX, HP-UX, Solaris, Windows XP, 2003, 2000, Vista, Windows NT and Linux

Languages C, JAVA/J2EE, .NET, VB Scripts, XML, UNIX - Shell Scripting

Databases Oracle 9i/10g, DB2, SQL Server, MS-ACCESS, MySQL

GUI VB 6.0/5.0, JSP, Java Applets, ASP, HTML

Web Related DHTML, XML, VBScript, JavaScript, Applets, JAVA, JDBC, Servlets and JSP

Testing Tools Load Runner, J meter, Silk Performer, Performance Center & Quality center

Web / Application Servers Apache 2.x, Tomcat, Web Logic, Web Sphere and IIS.

Monitoring Tools Wily Intro scope, Dyna trace, Site scope, Fog light, J console, OEM,

Network Latency Tool Shunra

Client : Medassets ,Plano,TX Jan2012-Present

Role: Sr. Performance Engineer

Responsibilities

Gathered and Analyzed Business requirements and procedures. Responsible for developing the performance test strategies, plans and cases. Developed Vuser scripts that contain tasks performed by each Vuser, tasks performed by

Vuser’s as a whole, and tasks measured as transactions. Validation of various transactions and documents based on HIPAA EDI files 837,834, 276 and

277.



Responsible for parameterizing large and complex test data to accurate depict production trends.

Validated the scripts to make sure they have been executed correctly and meets the scenario description.

Coordinated creation of stress environments to conduct stress\load testing. Involved in project planning, coordination and implemented performance methodology. Conducted Load Test for multiple users using Performance Center. Coordinated with internal business departments on their information system’s needs. Developed Vuser scripts using Performance Center Web (HTTP/HTML), .Net, and Web Services

(SOAP/SOA) protocols based on the user workflows Developed test scenarios for HIPAA EDI transactions, specifically, 276, 277, 837 and 834, during

various phases of the testing process. Worked with teams to identify the bottlenecks and performed regression testing to achieve the

pre spin off results. Responsible for reviewing the code in order to identify the root cause. Verified HIPAA transaction sets/segments on back end. Updated scripts for new release and added new functionality as per new releases. Verified the SOAP message delivery to the web services and verified the XML formatted

response using the SOAP UI. Performance Tested Middleware applications developed in SOAP environment. Responsible conducting for root cause analysis. Correlated and parameterized scripts as well as configured the RunTime settings in Virtual User

Generator. Developed Scenarios with different schedules like Ramp-up, Duration. Monitored performance using windows performance monitors and LoadRunner monitors. Tracked defects using Quality Center.

Environment: Loadrunner, Performance Center, Sitescope, .Net, Quality Center,MQ Series, Unix, Windows, Weblogic, Oracle, XML, SQL Server, MS Access, Sharepoint, Topaz, MS Vision, MS Project, VB, IIS, HTML, SQL

Client: Oncor, Dallas, TX Sept 2010 - Dec 2011

Role: Sr. Performance Tester

Responsibilities:

Prepared Test Strategies, Test Plan and Test Cases as per the business requirements and Use Cases.

Involved in Load Testing of various modules and software application using Load Runner



Developed the Load Test scripts using the Load Runner Virtual User Generator (VUGen) and enhanced the scripts by including transactions, parameterize the constant values and correlating the dynamic values

Developed Vuser Scripts in Web\HTTP, Web Services, and Click & Script Protocols.

Enhanced Load Runner scripts to test the new builds of the application

Developing Vuser scripts and enhanced the basic script by Parameterizing the constant values

Conducted Web services testing using SOAP UI and Jmeter.

According to business specification, Customization of scripts by using Load Runner

Carried out stress testing by introducing rendezvous points in the script

Conducted testing on the servers using Load Runner & Performance Center to establish the load capacity of the server

Using Load Runner analyzed the response times of various business transactions, modules login times under load, developed reports and graphs to present the test results

Used Sitescope & Dynatrace to monitor the load test and to identify the bottle necks.

Monitored the performance of the Web and Database (SQL) servers during Stress test execution.

Defined transactions to measure server performance under load by creating rendezvous points to simulate heavy load on the server

Used Load Runner for checking the performance of Various Reports and Queries under load

Analyzed the results of the Load test using the Load Runner Analysis tool, looking at the online monitors and the graphs and identified the bottlenecks in the system

Reported and entered bugs in Quality Center

Tested for the compatibility of the Browser.

Developed High Level and Detailed Test Plans and reviewed with Team, demonstrated Customer Level experience to team. Identify critical functionality at business level.

Updated test matrices, test plans, and documentation at each major release and performed Regression testing using automated script.

Managed/Updated Shared object repository from time to time using Object Repository Manager.

Used environment variables as global variables to pass the values between actions.

Carried out the manual testing of different interfaces.

Provided Test Estimates for various phases of the project.



Reported and tracked defects in the Quality Center bug tracking system.

Automated the test cases using Quick Test Professional

Performed QA Process management by automated process, identified functional changed vs. business impact and trained QA team with cross business training.

Work closely with software developers and take an active role in ensuring that the software components meet the highest quality standards

Supported Production team to understand and execute the processes.

Created application documentation to assist in the support and training of users.

Environment: LoadRunner, Citrix, Performance Center, HP BAC, LDAP, PPM, Oracle, E-Business, MS SQL Server, Web logic , IIS, Web Sphere ,Load Balancer , Performance Center, Jmeter, SiteScope, PeopleSoft, Wily Introscope, Test Harness, PeopleSoft, JAVA , FIX, Test Director J2EE Diagnostic Tool web HTTP/HTML, Windows 2000 / XP, Windows NT Server, Solaris , AIX ,IE.

Client: OCC, Dallas, TX Dec2009-Aug2010

Role: Sr. Performance Tester

Responsibilities:

Defining the performance goals and objectives based on the client requirements and input.

Involved in building a Performance Test Environment.

Installed, configured and maintained Loadrunner 9.5.

Extensively Worked in Web, and Web services in LoadRunner 9.5.

Completely handled Oracle upgrade project. There was an upgrade from 9i to 10g. Apples to apples comparison was done to verify the performance of the new database.

Scripted legacy desktop applications using Winsock protocol.

Ensure the compatibility of all application platform components, configurations and their upgrade levels in production and make necessary changes to the lab environment to match production

Create automated test scripts with LoadRunner VuGen.

Execute test and monitor system performance Sitescope, LoadRunner Controller.

Extensively used SOAP UI to perform web services testing.



Responsible for developing and executing performance and volume tests

Develop test scenarios to properly load / stress the system in a lab environment and monitor / debug performance & stability problems.

Coordinated with DBA for optimizing UNIX server for querying data in SQL and running scripts.

Configure and set up monitors in Sitescope.

Involved in analyzing, interpreting and summarizing meaningful and relevant results in a complete Performance Test Report.

Work closely with software developers and take an active role in ensuring that the software components meet the highest quality standards.

Used Virtual User Generator to generate VuGen Scripts for web protocol. Ensure that quality issues are appropriately identified, analyzed, documented, tracked and resolved in Quality Center.

Developed and deployed test Load scripts to do end to end performance testing using Load Runner.

Implemented and maintained an effective performance test environment.

Identify and eliminate performance bottlenecks during the development lifecycle.

Accurately produce regular project status reports to senior management to ensure on-time project launch.

Conducted Duration test, Stress test, Baseline test

Verify that new or upgraded applications meet specified performance requirements.

Used Performance Center to execute tests, and maintain scripts.

Used to identify the queries which were taking too long and optimize those queries to improve performance

Work closely with software developers and take an active role in ensuring that the software components meet the highest quality standards.

Provide support to the development team in identifying real world use cases and appropriate workflows

Performs in-depth analysis to isolate points of failure in the application

Assist in production of testing and capacity certification reports.

Investigate and troubleshoot performance problems in a lab environment. This will also include analysis of performance problems in a production environment.

Created Test Schedules.



Worked closely with clients

Interface with developers, project managers, and management in the development,

Execution and reporting of test performance results.

Environment: LoadRunner 9.5, Performance Center, JMeter, SiteScope, Oracle , Citrix, MS SQL Server , Weblogic, Load Balancer, JAVA , Quality Center 10 , J2EE Diagnostic Tool , web, Windows 2000/XP

Client: AT&T, GA Oct 2008-Nov 2009

Role: Performance Tester

Responsibilities:

Designed, developed and executed a performance measurement plan used as the basis for assessing process capability.

Developed custom Vuser Scripts utilizing Virtual User Generator that emulates important application Load critical transactions.

Worked on Web Services, Web (http/html), Citrix, .Net and Oracle_NCA protocols.

Verified the scalability, performance, and load balancing of the data streaming application.

Tested performance of web application and generated automation test scripts for different scenarios.

Extensively used correlation, parameterization techniques, goal oriented & manual scenarios and created multiple Vusers in the test scripts for testing the System.

Included rendezvous points in Vuser scripts generated by Vuser Generator

Parameterized actions and created files for different parameters using random, sequential, unique and correlated options in VuGen.

Used Load Runner Correlation, Content Check, Parameterization features. Tested application for maximum load.

Analyzed the system resource graphs, network monitor graphs and error graphs to identify transaction performance, network problems and scenario results respectively.

Created and executed goal oriented scenario under Virtual Users and assessed the site using LoadRunner. Configured windows resource monitor to measure performance such as File Data operations/sec, Processor time and Memory page faults/sec.



Gathered and analyzed results and submitted the Performance test report and recommendation.

Environment: Windows NT, Citrix, Jmeter, Loadrunner, Quality Center, Performance Center, SiteScope, Peoplesoft Payables, J2ee, Oracle, SQL, QTP, Site Scope, MS Office, MS Access, Sitescope, MS Vision, MS Project

Education :

MS in Computer Science from West Virginia University .


Vishnu Sai

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