SUMMARY

• Senior Java Developer with 7 years of experience in Object Oriented Design and development of Payment Systems/Networking/ERP applications using Java and C++
• Worked for worldwide leader in networking Confidential s
• Worked for one of the UK’s leading Payment system provider Confidential
• Strong experience in developing applications using Linux
• Experience in developing applications in Multi - Threaded Environment
• Knowledge and work experience in various complex data structures which include AVL and Radix trees
• Expertise in Deep Packet Inspection Technology
• Expertise in Payment Systems, processing EMV and credit card transactions including Contactless Payments
• Hands on Experience in developing complex device drivers and Level2 kernels for payment Devices
• Knowledge and Work experience in networking basics which includes TCP/IP, UDP, Gx (Policy Enforcement), Gy (Online Charging)
• Involved in Production Support and communicated with wide range of customers around the world which includes Motorola, Confidential, British Telecom, VeriFone, Turk Telecom etc
• Expert in analysis of enterprise wide applications, Project documentation and a strong understanding of Software Development Life Cycle (SDLC)
• Professional experience in preparing Functional specifications, Design documents and Unit Test plans
• Proficient in using Network Analyzing tools like IXIA, Wireshark, etc
• Hands on Experience in using Perforce Configuration Management Tool, CVS (Concurrent Versions System), Git and Gerrit
• Hands on Experience in using various Traffic generation Tools like Kiwi, Sesame, Gulliver
• Extensive experience in Agile Scrum and Waterfall Methodology of Software Development
• Passionate, self-motivated Software Engineer with the quest to gain knowledge and contribute towards successful development of software systems
• Proven analytic and problem-solving skills with the ability to assess customer needs
• Adept in communicating with technical and non-technical audiences

TECHNICAL SKILLS

Programming Language: Java(Expert), C++(Proficient),C,SML(Cisco Proprietary)

Operating System: Linux (Red hat, MontaVista), Windows

Debugging Tools: Eclipse, GDB, Cscope, Slick Edit, Vi

Technologies: Payment Systems, Networking

Tools: Ixia, Perforce, CVS, Make file, Git, Gerrit, SVN, Maven, Prrq, CDETS, Wireshark, kiwi, Sesame, Gulliver, pasta, Mantis

Frameworks: Junit

Protocols: TCP/IP, UDP, Gx, Gy, Diameter, SNMP

PROFESSIONAL EXPERIENCE

Confidential, San Jose, CA

Senior Software Engineer

Responsibilities:

• Responsible for design and development of the feature “Light HTTP TUR” that gives details about the HTTP browsing for each subscriber using Java
• Developed the feature “VLAN ID mapping for virtual Gi” for Confidential to enhance the subscriber intelligence and billing based on VLAN ID for mobile subscribers.
• Extensively researched and implemented the radix tree data structure to implement a feature for Confidential
• Fixed a critical program that monitors the bandwidth of traffic flowing through the product
• Built additional features in service control operating system (SCOS) which is responsible handling millions of traffic flows
• Resolved enormous number of customer cases on content filtering and URL blocking.
• Implemented the Performance improvement logic using Multithreading to enhance the RDR (Raw Data Records used for Billing) generation in the product to hit 33,000 RDRs/sec
• Solved several issues on DDOS attacks by recreating the scenario using different traffic generators
• Provided round the clock support & handled wide range of customer cases
• Extensively interacted with customers to understand their topology, reproduced the issue in the lab and provided solutions
• Created and presented technical documentation, design documents and functional specifications.
• Participated in conferences and Knowledge transfers during the initial transfer of the product from P-cube to Cisco
• Worked with and coordinated activities with other development groups, software configuration management, and release management and escalation teams

Environment: Java, C++, Eclipse, SML, Linux, perforce, Cscope, Prrq, CDETS, Slick Edit, Ixia, Wireshark, Kiwi, Sesame, Gulliver, Pasta.

Confidential

Technical Lead

Responsibilities:

• Involved in the design and development of various payment solutions applications
• Designed and developed device drivers using Java to integrate SmartNS/G8way with new payment devices/pin pads
• Worked on refining the device driver for a newer version of VeriFone payment device using Java and Native code (C++)
• Core member of the team that developed a new Java application, Touchlink to support contactless payments
• Responsible for maintaining and implementing new changes in the level 2 kernels introduced by EMV.co
• Customized & programmed the payment application G8way in order to be used for Australian Market
• Developed API’s to use the product from a .Net environment.
• Developed the tool FastBinRangeFormatter in Java to reduce the loading time of bin ranges of millions of cards on the terminal.
• Identified and fixed bugs in the software and third party integrator’s code
• Involved in migrating the very large code base from TortoiseSVN to Git and Gerrit.
• Created and presented technical documentation of the product to different audiences
• Created different scenarios of test cases to test all possible EMV rules in Kernels.
• Handled customer issues from integrators and end customers
• Provided support to customers during integration and accreditation

Environment: Java, Eclipse, JUnit, Git, Gerrit, SVN, Maven, Mantis, Microsoft Visual C++

Confidential

Software Developer

Responsibilities:

• Involved in the development of business layer using C++ of the Product for the Hospital Management, Office management System, Child welfare and for various small business services
• Developed pattern matching routines using C++that can be used across multiple domains
• Part of the team that developed a Data Mining Tool, Predict which uses evolutionary algorithms and predicts result based on historical data
• Researched and developed GBOXZ instant messenger using Socket Programing
• Involved in identifying KPIs and Data mining on real time data
• Involved in the research of semantic pattern matching(Stemming &Annotation)

Environment: C++, C, Linux, CVS