https://dgraph.io

Architect for Business Solutions Product Development/Data Product Development.

Architect/Engineer for Data Infrastructure.

Work in the distributed database engine with a focus on performance, scalability and fault-tolerance.

Curracurrong - Distributed Stream Processing SystemRearchitected and implemented the Curracurrong DSPS for Cloud Computing environments and made the source code available under an Apache 2 license.

COMP5338 - Advanced Data ModelsTaught COMP5338 to master's and bachelor's degree students to cover Data Modeling in post-Relational Database technologies like Graph Databases, NoSQL data stores, Column stores, Stream Processing Systems and Key-Value Stores.

Architected and developed a distributed rate-limiting infrastructure suitable for large-scale cloud-based web-services suitable for deployment across multiple data centers for both internal and external facing applications at Yahoo!.Architected and implemented a distributed stream processing engine on Hadoop MapReduce similar to Apache Tez based in collaboration with Yahoo! Labs.Architected, designed, implemented a large-scale, multi-data center, heterogeneous, distributed realtime collection and data processing platform and infrastructure that collects and delivers billions of events in near realtime for processing and analytics. This played a key role in Yahoo's "Metro" launch that instantly customizes user content based current activity on a page. It was also instrumental in enabling integration with numerous acquisitions like RightMedia and BlueLithium.Architected a Hadoop based batch processing system that is responsible for collecting and mining 300 billion web events (20TB) of data per day. The metrics generated are used for Business Intelligence, Behavioral Targeting of advertisements, Accounting (sponsored search ad clicks, display ad views), etc.Awards: * You Rock Award - 2009* Data Wizard Award - 2009Open Source Technologies: Hadoop Map/Reduce, HDFS, Zookeeper, Hadoop, Oozie.

Technical Lead/Senior Software Engineer, Object Oriented DBMS kernel team.* Designed and developed new features for the ODBMS product in the areas of transaction management, logging, recovery, buffer management, IO layer, shared memory and IPC, client-server RPC over TCP/IP sockets, latch/lock management and object management.* Rearchitected the ODBMS X/Open XA interface implementation to make it standard compliant. * Defined, architected and implemented an SQL-like database query language using flex + bison and ANTLR.* Implemented an online Database Reorganization Tool (vcompactdb) for data segment compaction.* Lead a team to redesign the Database Administration Tools (dbtool).* Enhanced the Online Database Backup Tool and High-Availability Backup Tool.* Implemented an X/Open XBSA interface to integrate with enterprise backup solutions like Legato.* Implemented ODBMS kernel structures using OS/hardware specific system calls and data structures.* Implemented extensions to EDG C++ and schema compiler to language extensions.* Released the ODBMS product and the C/C++ interface for RedHat Linux (gcc/g++), IBM OS/2 3.0/4.0 (icc), HP-UX, IBM AIX, SGI IRIX, Linux, IBM OS/2, Siemens-Nixdorf SINIX and DEC Alpha.

Worked on various projects for Hitachi, Japan. Developed software in C/C++ on Linux and UNIX flavours, MacOS, Windows and IBM mainframes.

Developed simulation software in C/C++ on UNIX for the Aeronautical Develpoment Agency (ADA) associated with the prestigious Light Combat Aircraft (LCA) and MiG 29.