May 2022 – Aug 2023 · 1 yr 3 mos · Melbourne, Victoria, Australia · Hybrid

Nov 2020 – Feb 2022 · 1 yr 3 mos

Apr 2016 – Nov 2020 · 4 yrs 7 mos

May 2015 – Apr 2016 · 11 mos · Greater Melbourne Area

Feb 2015 – May 2015 · 3 mos · Melbourne Area, Australia

Oct 2014 – Feb 2015 · 4 mos · Melbourne Area, Australia

Jul 2014 – Sep 2014 · 2 mos · Sydney Area, Australia

• Client: Commonwealth bank, Sydney
• Technologies: Core Java, Hibernate, Spring, EJB, Websphere Integration developer, IBM MQ Series, Clear2pay open payments framework, MySQL Database.
• Responsibilities
• Developed the bank payment hub which handles the direct debit and credit transactions from 24 internal source systems of the bank.
• The bank payment hub is being built on top of the OPF product of clear2pay and is being integrated with other bank systems through message queues (IBM MQ series) or web services.
• Working on object oriented design patterns such as State, Singleton, Decorator and others.
• Enhancing the EJB services provided by clear2pay by writing wrapper on top of them.
• Unit testing of modules using frameworks like Junit and Mockito.
• Achievements
• Integrated payment transactions of recently acquired Bankwest bank which helped in generating significant revenue for Commonwealth Bank.

Oct 2010 – Jun 2014 · 3 yrs 8 mos · Noida, Uttar Pradesh, India

• Clients: Soft Bank (Japan), Nokia Siemens (Germany)
• Position: Senior Java Developer
• Technologies:
• Java 1.5, JNDI, Spring, XML, XSL, XSD, Hibernate, MySQL, Oracle RAC 11g, SQL, JAXB, Xerces, SOA Framework, , Spring MVC, Swing, SOAP Web service, REST Web Service, Apache Active MQ Message Broker, JMS, JMX, ANT, Hudson, JUnit, Clearcase and telecom protocols like ISUP,INAP, SIP & SIP-T
• Responsibilities
• Developed a SIP application server using popular frameworks like Spring, Hibernate, multi threading frame works to accommodate calls originating from VOIP and PSTN network.
• Worked closely with Product Manager of Soft Bank in Japan on functional clarifications, functional specifications, user acceptance and cutover of the project. This includes conducting workshops with the client and providing support post production.
• Built a J2EE multi tiered Web Application known as Element Management System using Spring MVC, HTML5, JQuery, Java Script, Hibernate and deployed on Apache Tomcat.
• Developed JMS implementation using Apache Active MQ as message broker.
• Have used agile methodologies like Sprint planning, Scrum, TDD and Continuous Integration while developing the application server modules for Soft Bank and Nokia Siemens.
• Technical Mentor for the team of 6 senior developers.
• Achievements
• Migrated Application Server from SUN Hot Spot JVM to Oracle JRockit JVM for achieving enterprise level performance to support real time telecom system.
• Refactored SIP Application Server for supporting high network traffic of 500 calls per second by porting its JVM and introducing the concurrent API in multi threaded modules.
• Have implemented Continuous Integration/delivery development using tools like Hudson/Jenkins, Sonar and Puppet where pipeline is being configured for each phase of development and operations. This has helped company to reduce the turnaround time of the product delivery.

Feb 2010 – Oct 2010 · 8 mos · Gurugram, Haryana, India

• Clients: Bank of America (U.S)
• Position: Java Analyst/Senior developer (Design & development focus of a Java/J2EE Web Application.)
• Technologies:
• Java 1.5, Servlet, JSP, JDBC, JNDI, XML, Log4j, JMS, Apache Active MQ, JMX, SOAP Web service, ANT, Hudson, JUnit, SVN, SQL Server
• Responsibilities
• Built a J2EE multi tiered Web Application known as Customer Relationship Centre using Struts MVC, Spring, HTML, Java Script, Hibernate, EJB and deployed on IBM websphere.
• Have used Agile methodologies like Scrum and Sprint Planning while collaborating with teams across different geographical locations.
• Integrated various application interaction points with third parties like WCC and OOS which provides customer details and their accounts information respectively.
• Applied design patterns and OO design concepts to improve the existing Java/JEE based code base.
• Achievements
• Identified and fixed transactional issues due to incorrect exception handling and concurrency issues due to unsynchronized block of code. This has saved bank lot of money by correcting the accounting transactions.
• Convinced business users and analysts with alternative solutions that are more robust and simpler to implement from technical perspective while satisfying the functional requirements from the business perspective.
• Resolved product complications at customer sites and funneled the insights to the development and deployment teams to adopt long term product development strategy with minimal roadblocks.

Dec 2006 – Dec 2009 · 3 yrs · Gurugram, Haryana, India

• Clients: O2 Broadband (UK), COLTS (UK), RBS (UK)
• Position: Senior Associate Technology - Java/Senior developer (Design & development focus of a Java/J2EE Web Application.)
• Technologies:
• Java 1.5, Http Client, Servlet, JSP, JSTL, JDBC, JNDI, XML, XBeans, Log4j, JMS, Apache Active MQ, JMX, SOAP Web service, ANT, Hudson, JUnit, SVN, SQL, IBM Web Sphere, WSAD, RAID.
• Responsibilities
• Designed and developed J2EE Web solution known as O2- Sales Portal which integrates with approximately 13 different vendors and provides a world class high speed broadband to O2 customers.
• Integrated the O2 system with various external parties like British Telecom, Amdocs, Datacash, Support soft, Dispatcher and other systems using a host of external connectivity technologies like web services, IBM MQ Series, RPC, xml-http etc.
• Scale the existing LDAP Architecture to incorporate huge customer base of O2 broadband.
• Developed core Java multithreaded batch framework using Java Management Extensions individually.
• Developed core java foreign exchange (FX) trade application for RBS which provides its customers a centralized trading platform for doing transactions with multiple banks and financial institutions.
• Responsible for scope closure, estimation, design and execution of changes slated for replacement with in online solution.
• Achievements
• Consulted O2, UK on their business issues while traveling to UK. The consulted software solution has helped in establishing their name in Broadband business.
• Developed multi threaded batch framework which has reduced the turnaround time of the broadband ordering process

Jul 2006 – Dec 2006 · 5 mos · Pune

• Clients: Sprint (US)
• Position: Subject Matter Expert- Java/Software developer (Design & development focus of a Java/J2EE Web Application.)
• Tasks/Achievements:
• 1) Supported the integration of Amdocs Billing Solution ‘Ensemble’ with the Sales portal of Sprint Nextel.
• 2) Responsible for handling Change Requests and Production defects.
• 3) Involved in doing the performance tuning of existing application architecture which is based on multi-tier, distributed system. JSP on the presentation tier validates the client input and then calls Business Delegate. This delegate component calls business service which is written as session bean. Session beans then interact with Jolt Layer which translates the Java calls to C based calls.
• Technologies used: Java 1.4, Servlet, JSP, JDBC, JNDI, XML, Junit, Log4j, JMS, JMX, SOAP Web service, ANT, SVN.

Jun 2005 – Jul 2006 · 1 yr 1 mo · Gurugram, Haryana, India

• Clients: Citi financial (US)
• Position: Software developer - Java (Design & development focus of a Java/J2EE Web Application.)
• Tasks/Achievements:
• 1) Developed Retail Service Portal for Citi Financial which has been designed as two separate web applications, one for merchants over internet and other for Sales Finance people as an Intranet Site.
• 2) Worked on developing Intranet flow of the portal which would be used by the Sale Finance User to create merchants. Implemented JSF on the presentation tier which validates the client input and then calls Business Delegate. This delegate component calls business service which is written as session bean. Session beans then interact with Entity Bean and Data Access Object (DAO) depending upon the requirement like for huge data retrievals DAO has been used and for insert/update Entity Beans are used.
• Technologies used: Java 1.4, Servlet, JSP, JDBC, JNDI, XML, Junit, Log4j, JMS, JMX, SOAP Web service, ANT, SVN.