Sep 2015 – Nov 2016 · 1 yr 2 mos

• Working on Docker container platform as a service, build Node server to host micro services for Website, Mobile devices and TV UI teams.
• Contribute to Restify, a popular node REST framework.
• Build tooling around Docker container, making debugging, testing and deployment easy to perform for UI developers.

Mar 2012 – Aug 2015 · 3 yrs 5 mos · Mountain View, CA

• Quickbook Online
• Designed and implemented nodejs server to orchestrate restful services for intuit’s flag ship product Quickbook Online
• Responsibilities include :
• o Designed and implemented reusable nodejs server and common utilities into npm packages.
• o Implemented route module which generates service routes from simple configuration file in json format, greatly improved service developers’ productivity.
• o Implemented common error module to validate input error, handle nodejs server internal errors and pass through downstream java platform errors.
• o Implemented security middleware to handle XSS, verify crsftoken.
• o Implemented build utilities using grunt
• o Worked closely with Ops team to select server monitoring tool and deploy node server on AWS.
• Marketing Website
• Used Ruby on Rails to build web site rendering platform following MVC paradigm
• Architected and implemented CMS powered advertising in Quickbook Online end to end.
• Implemented CMS activityfeed service for Quickbook online.
• Optimized Intuit’s payment site loading performance by using sprite, base64 encoding, lazy loading, pre-fetch techniques. Reduced load time by 50%, increased conversion metrics.
• Designed and implemented a dynamic Ajax client side webapp to display articles from content management system. Apply responsive design technique for mobile experience.
• Built accessibility compliant website
• Implemented high quality A/B tests using SiteSpect
• Implemented conversion tracking for QuickBooks online

Aug 2009 – Mar 2012 · 2 yrs 7 mos

• Implement Ajax map API for YUI3 JavaScript library
• Design and implement route web service layer
• Design and implement interactive route rendering widget, drag/drop intermediate stop point, retrieve data on pan and zoom to achieve high performance
• Design and implement route cache and clipping to reduce data transfer size and HTTP request frequency.
• Design and implement zoom in/out widget. Change zoom center dynamically depend on page layout or mouse position.
• Implement dynamic direction changing expanded marker depending on location on map
• Implement CSS3 styled control widgets on map
• Responsible for update and deploy new release to edge server.
• Implemented contents recommendation platform for Yahoo Japan
• Implemented dashboard backend data processing pipeline. Designed a database to work with Yahoo Japan's specific needs.
• Created new scoring rule using different metric to rate most popular news results. Yahoo Japan has adopted this release into production resulted in a significant improvement in news click-through rate.
• Implemented shopping recommendation dashboard UI. Improved performance by 60% by tuning the dashboard UI and backend database.(It involves 5,000 stores which translate to 200GB data aggregation per day) .
• Set up gateway server to feed current live package to dashboard
• Worked as a liaison between the developing team in the U.S. and the Japan team enabling smooth communication between the teams. Trained Yahoo Japan team members providing them with the technical details and helped them with their system setups.

Nov 2007 – Aug 2009 · 1 yr 9 mos

• Design graphical user interfaces for Chemical Mechanical Polishing modeling
• Implement spectrogram to analyze copper and oxide thickness, array height and hotspot
• Implement instance layout viewer and hierarchy tree to control exaction process by hierarchy block.
• Implement GUI wizard for user to create and edit initial calibration process step template