Jul 2015 – Jan 2018 · 2 yrs 6 mos · Bengaluru Area, India

• Design and implement payment service level Business logic APIs.
• Worked on the Auth-Capture business model implementation.
• API optimization using sync-async model and use of database cache(OCC, memcache) etc.
• Migration of Middle tier services from C++ to Java

Mar 2014 – May 2015 · 1 yr 2 mos · Bangalore

• Design and develop TGS(Theatro Gateway Server) using ACE framework, C++ and MYSQL.
• Design and develop Data reporting and analytics framework using C++ and MYSQL. It includes call statistics, location statistics and voice recognition engines statistics.
• Writing multithreaded modules for DB operations using ACE framework and C++ connector APIs.

May 2013 – Feb 2014 · 9 mos · Bangalore

• Yahoo Small Business is an ecommerce platform which allows merchants to create a store and sell their products online. It has a high availability complex distributed systems architecture which can take high volume online traffic. I worked on development of back end roles: edit, catalog manager and promotion manager. I worked on Reviews and Ratings feature that does its data crunching on a Apache Hadoop grid.
• Language: C, C++, Java, PIG, mysql on Linux
• Tools: gcc/g++, gmake, gdb, jdk1.6, Apache Hadoop 1.2
• Responsibilities
• Design, Develop and deployed the Ystore (an E-commerce platform for the online shopping) backend roles. Back end owner for edit roles like Catalog manager, Promotion manager.
• Accomplishments
• Improved the performance of the Edit role using parallel publish. It does parallelization of data storage across the distributed servers.
• Developed data analytics for Ystore using Apache Hadoop. Analytics and statistics of order inventory data using MapRed and Sqoop.
• Server log processing and log management using PIG.
• Developed logger module using Apache log4cxx.
• Writing test cases using CPPUNIT to improve the code coverage of checkout role.
• Fixed backend bugs and added new features to catalog manager & promotion manager.

Aug 2007 – Apr 2013 · 5 yrs 8 mos

• Worked on development and maintaining of Electronic Design Automation tools like “PrimeTime” tool for Static timing analysis of IC design and “Formality” Formal synthesis and verification of IC design.
• Languages: C, C++, Pthreads on Linux
• Tools: gcc/g++, gmake, gdb, TotalView, gprof, truss, Intel inspector
• Responsibilities
• Understand the Electronic Design and Automation (EDA) products and their flow.
• Working on porting of EDA simulation tools Formality/CATS/ESP products which are developed in C and C++ to different UNIX flavors like Solaris, AIX and SUSE. Porting owner for those platforms.
• Fixing build issues and regression issues in Secondary platforms- AIX, SPARC and SUSE.
• Supporting EDA tools on different UNIX flavors with good quality. Fixing issues related to performance, customer stars, memory alignment errors and fatal errors.
• Porting owner for EDA tools – Formality, ESP and Primetime.
• Accomplishments
• Migrated part of ESP code to SolarisX86 from Linux on 32 and 64bit, fixing build errors, errors due to architecture difference.
• Migrated Formality to Solaris X86 from Linux on 32/64 bits. Fixing build errors, errors due to architecture differences, alignment errors and performance issues.
• Migration of Formality code to use hash containers (hash_map, hash_set and hash_multimap) on Solaris platforms (Both SPARC and x86solaris) using STLPORT4.
• Fixed performance problems on different platforms.
• Identified and fixed multithreaded random failures due to Lost-Wakeup problem on Solaris.
• Worked on the development of generic components which will support functional components across the platforms.

Jan 2005 – Aug 2007 · 2 yrs 7 mos · Bangalore

• Responsible for validating Oracle database code portability for the Unix/Linux operating environments and the work profile amongst others includes identifying and correcting non portable C/C++ language constructs, library/system call usage, 32/64 bit hygiene issues and compiler/tool chain glitches across active Oracle database code lines.
• Database server implementations/releases on a variety of strategic UNIX, Linux and Windows (64 bit) platforms. Includes Solaris SPARC64, AIX, HPUX (PA & Itanium), Linux x64, Windows x64 among others.
• Responsibilities
• Owner of the RDBMS component of Oracle which is biggest of all components in terms of code size and most important of them all.
• Managing 6 UNIX platforms during the life cycle of each release.
• Answerable for resolution of issue related to builds, short regress tests, long regress test, system testing, packaging and install testing.
• Individually contributing as a developer for fixing bugs and issues related to the Operating System Dependent (OSD) files.
• Communicating with engineers with various venders (e.g. Sun, AMD, HP and IBM).
• Involved in Code reviews and developing portability layer of RDBMS.
• Communicate with various teams and do analysis of bug or enhancement.
• Accomplishments
• Successfully completed release 10.1, 9.2, Beta releases for 10.2 and finalized the production release of 10.2 and recently started Beta for 11g. Also done 2 patchset releases on 10.1.0.4 and 10.1.0.5.
• Efficiently performing resource management and issue resolution in a multi-tasking environment comprising of, at any given point of time, about 10 different OS-platforms combination and multiple different releases.