Advanced Cooperative Arctic Data & Information Service (ACADIS) Portal - Designed and implemented a text-based search Interface using Backbone, RequireJS.- Integrated disparate metadata from multiple data providers using a broker catalog service application (Gi-Cat). - Enriched the backend service by implementing Lucene support for eXist database.- Built an Open source Gi-cat-driver gem to provide API handles interaction with Gi-Cat.- Diagnosed performance bottlenecks and upgraded the backend service to use Solr.- Integrated BDD and TDD (Cucumber, RSpec, JUnit, Selenium and Jasmine) into development processes.Searchlight Service and IceBridge Portal- Designed and implemented RESTful APIs for server side services (Searchlight Service) using Java and Hibernate.- Built a rich web interface to retrieve geographical information at different granularity using OGC map services (WMS, WFS), ExtJs and OpenLayers. - Designed an efficient caching mechanism to shorten response times for map tile requests.- Implemented a system that automatically detects new datasets; Validates, transforms and ingests the dataset into a PostGIS database.Arctic Geographic Information Portal- Designed and implemented a RESTful data exploration application for accessing all environmental and species observations (Ruby on Rails). - Developed a robust ingest mechanism that includes validation, verbose logging and backup procedures for PostGIS database. - Built continuous integration pipeline to improve development process.

VMware Infrastructure User Agent- Designed and implemented collection program to harvest system performance and capacity data for VMware cluster.- Designed and implemented the user interface(UI) that configures VMware User Agent. - Designed and implemented the auto migration handling code for agent configuration file conversion between different release versions.- Designed test cases for new features and performed unit, integration and scalability tests.AIX POWER User Agent- Developed and maintained the data collection application that reports statistics of AME/AMS/LPAR tables for Power6/ Power7. - Implemented automatic data validation for the agent. WebSphere User Agent - Implemented a data query mechanism based on the UI settings.- Designed and implemented UI for WebSphere User agent. - Implemented a state machine to handle the response message from the collector.

A Spreadsheet-like Visualization System for Vortex Characteristics Exploration - Designed and implemented the interface for the visualization system.- Implemented the visualization exploration models. Human Language Technology (HLT) System- Designed and implemented a Speech enabled Dialog navigation system and the spectrogram visualization interface.- Improved the memory usage by optimizing the display algorithm for speech analysis demonstrations.