I write code.

Software Developer @ From May 2015 to Present (9 months) Software Developer @ * Worked on Recruiter Mobile--Java, Jetty Server, Hypermedia API, Versioning API, ObjectiveC. * Worked on Job Seeker Site--Java, Jetty Server, Hypermedia API, Backbone.js * Developed and maintained several Storm Topology using Java and Scala, including sending email to more than 2 million users and iOS push notification. * Worked on Recruiter Website--Java, Spring MVC, MySql database. From March 2013 to January 2015 (1 year 11 months) Software Engineer @ Built a social-network web app from scratch with Ruby on Rails, AngularJS, Resque, MongoDB, Amazon S3 and Heroku From May 2012 to January 2013 (9 months) Software Developer @ * Worked on Tip or Skip website with a Node.js express application, integrated Facebook and Twitter API to help user find their friends on Tip or Skip * Built a web app using Tip or Skip API From May 2012 to August 2012 (4 months) Research Assistant @ Analyzed and processed data generated by optimizing material structure. From December 2008 to August 2011 (2 years 9 months)

M.S, Computer Science @ Columbia University - Fu Foundation School of Engineering and Applied Science From 2011 to 2012 Master of Science (M.S.), Computational Physics @ Xiamen University From 2008 to 2011 Bachelor of Science (B.S.), Physics @ Xiamen University From 2004 to 2008 Hai Lin is skilled in: JavaScript, C++, Java, HTML, Ruby, C, Ruby on Rails, CSS, Unix, Node.js, Programming, Git, Objective-C, Amazon Web Services, Scala