Teachers Pay Teachers is a marketplace where teachers buy, sell, and share original educational resources. TpT has over 5M yearly active members with 3M pieces of content created and shared by our community of teachers and hundreds of millions paid to teachers to date.

From tablet hardware to apps, Amplify creates educational experiences to empower teachers and students.

Ohours and Hirelite help you build relationships through face-to-face conversations with people who are not in your personal network. Through open office hours (for mentorship, business meetings, hiring, etc) you meet new people, connect over shared interests, and structure your time together - so you spend more time with people and less on logistics.We've worked with a great list of companies, including: LinkedIn, Quora, Etsy, Barnes & Noble, ZocDoc, and many more.Primary technologies used: Ruby, Rails, Javascript, Postgres, WebRTC

At yappr.com we help people learn English through online video and interactive practice tools.Primary technologies used: Java, Flex, Spring, Hibernate, GigaSpaces, SQL Server, Groovy, Grails

Architected the next generation of a web data mining framework.Primary technologies used: C#, Java, Ruby, Nutch, Hadoop, SQL Server

Led software development for a Department of Defense data mining/research tool and helped create a multilingual information retrieval platform.Primary technologies used: Java, Python, Django, Lucene/Solr, Nutch, C, MySQL