SUMMARY:

• Responsible for implementation and support of the Enterprise Hadoop environment
• Designed and implemented Hadoop ecosystem using Hortonworks Data Platform
• Automate operation, installation, administering Hadoop ecosystem components
• Hadoop cluster provisioning, managing and monitoring
• HDFS, MapReduce, YARN, ZooKeeper, Spark, MongoDB
• Pig, MongoDB connector, HBase, SQL, Oracle, MySql
• SOAP and Rest web service development
• Spring Batch processing for large datasets
• Java/J2EE/SOA in large Enterprise, Batch processing and web based applications.
• Systems integration using Web services and Service - Oriented Architecture (SOA)
• Oracle SOA 10g/11g, BPEL and OSB development and Business Rules Engine
• Oracle WebCenter Portal application development
• Spring Portlet MVC Framework application development
• Created architecture and design of J2EE applications
• Oracle Human Workflow application development
• Evaluated, selected, and advised others on the application of architecture modeling tool sets
• Developed plans and strategies to modify the IT infrastructure to support short and long-range agency goals, objectives, and plans.
• Multiple systems delivered through the full development lifecycle in enterprise and web environments context
• Worked closely with clients and customers to resolve issues and implement new enterprise solutions
• Team leadership and team mentoring
• Handled all aspects of development lifecycle including architectural design, evaluation of third party solutions, performance analysis and support.

TECHNICAL SKILLS:

Programming Languages: JAVA, J2EE, EJB, SOA, BPEL, OSB, JSP, JSF, JNDI, RMI, Xdoclet, SOAP and REST Web Services, JAX - WS, JAXB, XML, XSLT, XPath, XQuery, PL/SQL,SQL, noSQL JAVA API for XML-Based RPC (JAX-RPC), JAVA Mail Service, JAVA Standard Tag Libraries, ASP.NET, C#, Visual Basic, RUBY, PHP HTML, DHTML, JavaScript, CSS, Ajax, YUI, P erl, Korn Shell, sed, awk

Database Skills: MongoDB, Accumulo, HBase, Oracle 10g/11g, PostgreSQL, MS SQL Server, Mysql, Mysql Cluster, ADABAS

Operating Systems: Red Hat Enterprise Linux, Centos, Oracle Linux, Windows XP/NT, HP - Unix

PROFESSIONAL EXPERIENCE:

Confidential, MD

Sr. Hadoop Infrastructure Engineer

• Installed and configured Hortonworks Data Platform clusters with Ambari
• Installed and configured Apache NiFi Hortonworks Data Flow
• Installed and configured Apache Solr cloud on Hadoop clusters
• Installed and configured standalone Spark clusters
• Configured high availability of Name Node, Hbase, Resource Manager, etc.
• Performed Hadoop cluster upgrade using Ambari
• Added and configured services to the existing Hadoop clusters
• Monitored and managed logging and disk space utilization
• Monitored services and components status on the clusters
• Created VMs and performed Linux OS upgrade
• Conducted performance tuning for MapReduce and Spark jobs
• Conducted ETL using Apache NiFi and Apache Flume
• Monitored the clusters using Ambari metrics
• Enabled and Kerberized Hadoop cluster
• Installed and configured Puppet master and Puppet agent
• Developed Puppet manifests and templates for automation

Confidential, MD

Technical Lead /Sr. Java Developer

• Worked with the project manager to oversee and drive the development team.
• Performed requirement analysis, software architecture and design.
• Developed web services to modernize and integrate legacy systems.
• Developed software applications using Spring Batch and Java with Eclipse.
• Developed Java application to handle large datasets in the multi-threaded environment.
• Created and tested SQL queries in Oracle database.
• Built and ran the application using Maven.
• Created JUnit test cases and conducted testing.
• Resolved critical issues affecting the configuration of the IT infrastructure.
• Identified and fixed issues in critical performance parameters and variances.

Confidential, MD

SOA Integration Architect/Principal Java Software Engineer

• Gathered business and technical requirements for integration between Oracle Siebel CRM and other legacy and external systems
• Finalized technology and architecture details related to the integration solutions
• Built interfaces for SOA Integrations using Oracle fusion middleware SOA suite 11g and Oracle service bus (OSB)
• Built and deployed the SOA application to the cloud environment
• Troubleshot the Weblogic and SOA server in the cloud environment
• Developed custom Java Action classes for Web service fault handling
• Developed Java classes and incorporated them in BPEL processes
• Developed SOA components using BPEL
• Developed OSB proxy services and business services.
• Used JMS adapters, DB adapters as well as FTP adapters in BPEL processes and OSB components.
• Wrote XQuery to transform one XML to another XML document
• Created SOA and OSB build scripts for deployment
• Created SOA and OSB deployment documentation
• Wrote WLST scripts for application deployment to WebLogic server
• Used Jdeveloper to deploy BPEL processes to the SOA server.
• Used Oracle Fault Management Framework in the BPEL process.
• Captured faults to send them to the logging components such as database and JMS queues.
• Captured key information to send to BAM report
• Conducted research on securing SOA and OSB Web services
• Created OWSM security policies

Confidential, MD

Lead J2EE/Web Portal developer

• Responsible for architecture and design
• Made recommendations and used best practices for Java application development
• Developed the portal application using Spring Portlet MVC framework, hibernate and YUI JavaScript Framework as well as Oracle Webcenter
• Deployed the portal application to Weblogic server11g
• Worked with a team of Java developers for application development
• Mentored the junior Java developers
• Participated the daily Scrum standup meeting
• Conducted Java code review
• Wrote test cases using Junit and Mockito framework

Confidential, MD

Team Lead and Senior Principal Consultant

• Full life-cycle development from conception through maintenance of NIH grant management systems
• Lead junior Java developers for application development
• Developed Oracle Human workflow using Oracle SOA 10g and Oracle Fusion Middleware
• Developed Oracle SOA BPEL processes for applications integration with TIBCO
• Generated web service client using WSDL file and consumed the service in the applications.
• Developed SOAP and REST web services
• Built applications to consume both SOAP and REST web services
• Developed Restful web services client using Java Architecture for XML Binding (JAXB)
• Supervised and developed Web applications using Servlets/JSP and Java Standard Tag Libraries (JSTL)
• Developed enterprise Java applications using Struts, Hibernate and Spring framework.
• Instrumental in selecting development environment and tools, design and defining coding standards
• Interfaced with product line management, project managers to define and develop the feature content to insure feature development in-line with the customer needs.
• Provided technical assistants to junior Java developers and other consultants
• Worked with JIRA as project management and issue tracking tool.
• Responsible for application deployment to DEV and TEST environments
• Provided production support to the end users by monitoring issues and responding
• Responsible for designing, architecting, developing and delivering J2EE applications
• Developed and presented proof of concept to customers during the initial project discussions

Confidential, MD

Senior J2EE Software Engineer

• Performed requirements analysis and architecture design
• Conducted design using Object Oriented Analysis and UML
• Followed Object Oriented best practices to enhance extensibility and code reuse.
• Utilized Struts framework and Hibernate audit logging functionality for implementation
• Implemented Web user interface using Java SDK, JSP, DHTML, JavaScript
• Implemented J2EE application security solutions using LDAP.
• Built the JBOSS cluster environment
• Built and deployed the application to JBoss application server cluster environment.
• Conducted unit testing and integration testing

Confidential, Rockville, MD

J2EE architect/Developer

• Performed requirement analysis and software design using UML
• Developed use cases from requirements documents
• Participated in architecture and design reviews
• Utilized J2EE design patterns to design software systems
• Developed J2EE applications using EJB and Oracle database.
• Lead junior Java developers for web services development
• Installed and configured Linux, Apache and Weblogic Server

Confidential, MD

J2EE architect/Technical Lead

• Performed systems data model design and object model design
• Created class diagrams and sequence diagrams
• Implemented business logic using Session and Entity Beans.
• Implemented Web user interface using JSP, DHTML, JavaScript, XML and XSL
• Installation and configuration of Jboss.
• Instrumental in selecting development environment and tools, defining coding standards
• Followed Object Oriented best practices to enhance extensibility and code reuse.
• Worked with customers for requirements gathering
• Mentored junior Java developers

Confidential, MD

Senior J2EE Developer

• Participated in requirements gathering
• Followed Object Oriented best practices to create class diagram and use cases
• Implemented Web user interface using Java SDK, Servlet, JSP, DHTML, JavaScript
• Interfaced with product line management, project managers to define and develop the feature content to insure feature development in-line with the customer needs.
• Mentored junior Java developers