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Teng Siong Ong

Teng Siong Ong

San Francisco, CA, United States
Member since August 13, 2013
Teng Siong is a freelance developer and entrepreneur who has helped build applications with millions of users. He started a company after his freshman year, which was later acquired. He has extensive experience working with early stage startups and helping them to build quick prototypes for market validation.
Teng is now available for hire
  • Ruby, 6 years
  • Ruby on Rails (RoR), 6 years
  • Objective-C, 5 years
  • iOS, 5 years
  • Backbone.js, 3 years
San Francisco, CA, United States
Preferred Environment
Mac OS, Git, MacVim
The most amazing...
...thing I've created was a company my freshman year at college, which I then sold 6 months later.
  • Co-founder
    2012 - 2013
    Apartment 7, Inc.
    • Created 4 early prototypes for market validation.
    • Created an online video chat feature that supports realtime user tracking.
    • Created a web app that scaled up to 80k+ profiles in less than 1 month.
    • Built a payment system to start charging users.
    • Built a matching algorithm to suggest right matches to users.
    Technologies: Ruby on Rails, Objective-C, JavaScript
  • Co-founder
    2011 - 2012
    Serenpidity Machine, Inc.
    • Created the client-side JavaScript-based web application with Backbone.
    • Iterated on the back-end API.
    • Iterated on the iPhone client.
    • Created the internal metrics dashboard.
    • Added metrics tracking for both the iPhone app and the web app.
    Technologies: JavaScript, Ruby on Rails, Objective-C
  • Software Contractor
    2010 - 2011
    FLOChip, Inc.
    • Developed a full-scale eCommerce prototype.
    • Developed a custom content management system.
    • Developed a music streaming service: Chinese Pandora.
    • Managed the launch of a website from a public company.
    • Managed the redesign of a client project.
    Technologies: Ruby on Rails, Objective-C, JavaScript
  • Mobile Developer
    2009 - 2010
    Loopt, Inc.
    • Iterated on the iPhone app that had millions of users.
    • Built the first paid-only feature into the iPhone app.
    • Added metrics tracking for the iPhone application.
    • Iterated on the chat features on the iPhone app.
    • Worked on the product to get feedback from the users.
    Technologies: Objective-C
  • Co-founder
    2009 - 2009
    GraffitiGeo, Inc.
    • Built the early iPhone prototype that got us into Y Combinator.
    • Created a real-time heatmap showing users who checked in places.
    • Developed the back-end API for the mobile clients that supported up to 50k users.
    • Programmed the internal metrics dashboard.
    • Iterated on the design for the website and the iPhone client.
    Technologies: Ruby on Rails, JavaScript, Objective-C
  • Languages
    Ruby, JavaScript, Objective-C, Java, SQL, Python
  • Frameworks
    Ruby on Rails (RoR), Ember.js
  • Libraries/APIs
    Backbone.js, Facebook API, Stripe, jQuery, Node.js
  • Storage
    Redis, PostgreSQL, MongoDB
  • Tools
  • Paradigms
    Agile Software Development
  • Platforms
  • Bachelor degree in Computer Science
    2008 - 2012
    University of Illinois at Urbana-Champaign - Urbana-Champaign, Illinois
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