TECHNICAL SKILLS

Big Data: Apache Hadoop, HBase, HDFS, Kafka, Hue, Hive, HiveQL, Spark UI, Ooozie,Scala.

Continuous Integration: Teamcity, Jenkins, Hudson, Bamboo.

Testing Tools: HP QTP 11, HP Loadrunner 12.55, JUnit, Visual Studio Load Test, JMeter 4.

Programming Environment: IntelliJ IDEA 2016.3, Visual Studio 2014, Robot framework.

Source Tracking Software: Perforce, PVCS, Rational ClearCase, Subversion, BitBucket, Git.

Programming Languages: C#, Java, SQL, XML, Scala.

Bug Tracking: HP ALM 12.5, JIRA, Rational ClearQuest, TFS.

Databases: MS SQL Server 2014, Oracle 11g, IBM DB2 9.1.

Database tools: PL/SQL Developer, SQL Studio, Crystal Reports, SQL Profiler.

Webservers: Apache, IIS 9.

Application Servers: Red Hat Jboss 5, Oracle Weblogic 12c, IBM WebSphere 9, BizTalk.

Server OS: Windows Server 2012, HP - UX 10, IBM AIX 7, Linux.

Web Service Tools: SOAP UI 4.

Network traffic: Fiddler, Wireshark.

Infrastructure Monitoring: SiteScope, Splunk, Nagios, Urchin, Appdynamics, Cloudera, TeamQuest

Requirements Management: Borland Caliber RM, Confluence, Sharepoint, Trello.

PROFESSIONAL EXPERIENCE

Confidential, Columbus, OH

Performance Test Lead

Responsibilities:

• Analyzed producton statistics and performance requirements and calculated workload based on statistics and business forecasts.
• Developed load profiles with various composition and intensity of emulated operations and verified it with Jmeter scripts and scenarios.
• Evaluated application’s ability to support users performing simultaneous database sync while remaining stable
• Captured maximum intensity of transactions at which the system meets the requirements for response times or processing times and maximum level of load during which the system’s degradation occurs.
• Verified if requests/queries were executed with a frequency corresponding to the load test profile.
• Obtained response times and system resources data for stabilized loads with 60-minute durations.
• Identfied bottlenecks in hardware and system resources, limitations of the software architecture and a list of critical indicators to monitor during production operation.
• Uncovered an array of issues such as Weblogic’s 90% CPU spikes, 5-fold increase in completion times for database sync operation, Oracle DB connections not closing resulting in orphaned sessions, JDBC errors, a number of slowest SQL queries.
• Recommended replacements of calls for faulty method in IBM Business Object API which doesn’t close Oracle DB connections on time, adjustments in actions.jsp page to limit the amount of orphaned DB connections, removal of isEmpty() calls to eliminated JDBC error, clean-up of idled DB connections.

Confidential, Columbus, OH

Performance Test Lead

Responsibilities:

• Identified productions issues to be verified by performance test scenarios.
• Identified key business transactions to be included in the performance test.
• Developed performance test scripts in Loadrunner 12.55 to measure productivity, verify NFRs and SLAs in Real Estate, Hydro and Fuels modules.
• Configured Load Generators to interact with a host and Controller to gather metrics from them
• Throughout the performance test effort captured results in Loadrunner extended logs and monitored appserver and DB servers.
• Monitored Application Server, DB Servers, Load Generation Servers for: Available, MB, % Committed bytes (usage of dedicated memory), average and peak load of processors during the test, Processor load (%Processor time), length of processor thread queue (Processor Queue, Run queue), Network interface (packages), Packages Sent/Received, Package Queue, % of disk usage during write/read (% Disk Write/Read), Disk queue(packages waiting to be written to disk), number of transactions performed, Response times (avg., max, min, 90% of all operations), speed of execution.

Environment: Jmeter 4.0, Loadrunner 12.55, Sitescope, Weblogic 12c, Websphere 9, Oracle 11g, HP ALM, GIT, Jenkins, Hudson, Linux, PL/SQL Developer, TeamQuest.

QA and Sr. Performance Test Engineer

Responsibilities:

• Participated in Confidential ’s dbGuardian Oracle reports testing approach definition and testing strategy implementation.
• Collected, shared and supported QA-related expertise in Confluence regarding dbGuardian streams testing.
• Maintained dbGuardian QA-related project documentation in Sharepoint.Escalated QA-related risks and issues to dbGuardian QA Manager
• Designed performance test plan in Confluence with defined objectives: configure and tune Nordea’s Hadoop environment to handle the expected transaction volumes, develop automated script framework to verify normal and peak throughput per second as per NFR SLAs, analysis of performance metrics through various listeners, generation of reports with critical findings and performance improvements.
• Assisted Nordea’s Devops and Hadoop teams with creation of virtual edge nodes on Hadoop cluster, user accounts, verifying Spark jobs executors, submitted requests and verified existing and missing Kafka topics and namespaces, obtained projects from GitHub, verified resource queue, initiated Flume agent setup by Hadoop admins, overlooked deployment of latest metadata APIs with new DB instance into the performance testing environment and the implementation of Cloudera Manager for capturing Jheap size and time spent in garbage collection.
• Examined pull requests and obtained latest project files from BitBucket and used Intellij IDEA and Robot Framework to design agreement, balances, transactions and reconciliation stub files that replicate Temenos T24 data in .JSON format as well as Python custom library scripts to convert and place such files in Kafka for Flume agent consumption with subsequent mapping into HDFS schemas.
• Used UC4 to execute Oozie-scheduler workflows that triggered various Spark jobs. Monitored SparkUI, Oozie logs and capture job failures and execution times as well as creation of relevant result files under HDFS folders.

Environment: Scrum, Scala, Ubuntu Virtualbox, GitHub, Bitbucket, Yarn, HDFS, HBase Hive, Hue, HiveQL, Kafka, Flume, Temenos T24, Cloudera Manager, Zookeeper, Jenkins, Oozie scheduler, Apache Spark UI, BitBucket, GitHub, Kanban, Robot Framework, Python, Oracle PL/SQL Developer, Jira, JUnit, Postman, Rest API, TeamCity.

Confidential

Performance Test Engineer

Responsibilities:

• During testing, requests were executed at a frequency corresponding to the testing profile (no more than 5% of errors occurred), and regulations.
• Verified that CPU utilization at the main nodes of the system (Weblogic, Oracle) did not exceed 80% during any 10-minute interval during the test.
• Performed spike testing with JMeter using synch timer to block and release threads, solved server overloading issues by configuring Jmeter timers.
• Used JMeter’s different listeners to capture and analyse the test results in both tabular and graphical format. Fetched dynamic data from preceding requests and passed them to the subsequent requests as parameters, i.e session variables from the response of the request, changed thread allowance in Thread Group, configured optimal resource management using non-GUI mode, fewer Listeners, samplers and assertions, used Listeners for aggregate report and graph results
• Verified that utilization of RAM was stable throughout the test, i.e. there was no steady increase in memory consumption or memory leaks, that utilization of RAM did not exceed 90% during the test and if there was no active page exchange, i.e. no paging, typical for cases of shortage of RAM.
• Verified the response time of the disks (service time) did not exceed 15 ms during 90% of the test time, utilization of the network (kb / s) did not exceed 80% of the maximum throughput during 90% of the test time.

Environment: Agile, Java, Weblogic, Oracle 11g, AppDynamics, JMeter, Loadrunner 12.5, JIRA, HPUX11i, Bamboo, BitBucket, Trello.

Confidential, Fairfield, NJ

QA and Performance Test Engineer

Responsibilities:

• Analyzed clients' requirements presented by business analysts to determine and estimate testing coverage to be executed in UAT and Production environments.
• Used Jira for sprints assignment, backlog tracking, user story readiness status and to estimate and document QA tasks: high-level scenarios, test case documentation, test case execution, defects regression.
• Used TFS to design core and custom implementation test cases for UAT and Production releases covering custom and newly added core features and distributed test cases within TFS repositories depending on core product or client specific features tested. Regression and UAT was conducted on cross-browser platforms as well as native mobile device application versions on Android, IOS, Windows Phone.
• Analyzed Web and application server logs, APConfig and ImportMasterConfig files, batch jobs logs, stored procedures code to identify errors, exceptions or missing logic in DEV/QA/UAT/PROD.
• Established benchmarks to evaluate performance and diagnostic tools to help identify and root cause performance issues
• Designed performance test suite in Visual Studio Ultimate Load Test 2012 and monitored processor time, processor queue, privileged time, deferred procedure calls time, available m/bytes, pages/sec, page faults/sec, pool non-paged bytes, cache bytes, pool paged resident byes, data map hits, committed bytes, network bandwith mb/s, physical disk queues and time, and more.

Environment: Agile, C# .Net, IIS, MS SQL Server 2014, Sharepoint, VS Ultimate Load Test 2012, TFS Manager, Jira, SQL Profiler, Trello.

Confidential

QA and Performance Test Engineer

Responsibilities:

• Designed functional test coverage in HP Quality Centre based on the requirement specification produced for the specific purpose of capturing the navigation and content structure for the wireframes of the Accelerate Protection project.
• Analyzed product performance and scalability across the entire hardware and software system to develop solutions to improve performance and scalability and recommend the roadmap for improvements.
• Documented performance test planning activities for establishing whether hardware/network issues occur under current and future usage levels at peak times and if any database or component level bottlenecks occur under load.
• Established standard environment for baseline performance that included such variables as number of iterations, iteration delays, user wait times, number of concurrent users
• Using Visual Studio Ultimate Load Test I designed performance test scripts to cover all the NFR’s that can be validated while running performance tests. This included load testing measuring, the ability of GLS solution to handle a standard and peak traffic load and concurrent users by simulating a series of standard day to day activities, end-to-end business processes and transactions.
• Analyzed memory exceptions, http-500 server errors, application server response, load script errors and database performance using IIS server and Nagios logs, Visual Studio and SQL Profiler data.
• Executed benchmarking run with incremented number of concurrent virtual users continuously till performance objectives or breakpoints were reached. Analysis of performance benchmark tests included monitoring logs reviews, performance break-up across servers, analysis of bottlenecks and scalability limitations, identification of system and infrastructure related issues, analysis of workloads impact on system performance.
• Studied workload characteristics to create a balanced suite of performance workloads

Environment: Agile, C# .Net, IIS, MS SQL Server 2008, Sharepoint, HP Quality Centre 11, Visual Studio Ultimate Load Test, Urchin, MS Visio, SQL Profiler, Wily Intor Scope, Nagios, Trello.

Confidential

QA and Performance Test Engineer

Responsibilities:

• Designed and executed functional and non-functional test coverage cases for customized vendor’s commodity trading & risk management software solution, enhanced SAP interfaces that integrate with internal and external systems, BizTalk solution that allows internal development of system interfaces to allow communication with external systems
• Established standard environment for baseline performance that included such variables as number of iterations, iteration delays, user wait times, number of concurrent users, test groups’ workload distribution, database capacity and response times for both EKA CTRM, Biztalk and SAP.
• Defined performance testing scenarios to be used as baseline against which each Non-Functional Requirement scenarios was tested and measured.
• Created Loadrunner performance test suite in VuGen against major releases that helped identify application’s code and database optimizations to increase system’s performance.
• Established baseline simulated working environment that helped verify that system design meets the project's non-functional requirements for each performance test cycle.
• Conducted benchmark performance testing against representative production workload and anticipatory data volumes to set a baseline for further enhancement of the applications.

Environment: Java, Weblogic, BizTalk, SAP, Oracle 11, HP Quality Center 10, HP Loadrunner 11.5, VuGen, SiteScope, AppDynamics, JQuery, MS Visio ETL, Sharepoint.