Stephanie Volftsun, Software Developer in San Francisco, CA, United States
Stephanie Volftsun

Software Developer in San Francisco, CA, United States

Member since June 11, 2015
Stephanie is an entrepreneur and freelance software developer with 10 years of professional experience. She started 2 companies (Knotch, Bubby) which are both still going strong. She's built products from the ground up and has built features on top of larger systems. In general, she love building products that delight people.
Stephanie is now available for hire


  • Bubby
    Node.js, Objective-C, Express.js, MongoDB. AWS, Microsoft Bot Platform
  • Knotch
    Node.js, Express, Objective-C, MongoDB, AWS EC2, S3, SendGrid


  • JavaScript, 8 years
  • Objective-C, 8 years
  • AWS S3, 6 years
  • MongoDB, 6 years
  • Node.js, 6 years
  • Express.js, 6 years
  • Python, 4 years
  • Swift, 2 years


San Francisco, CA, United States



Preferred Environment

OS X, Xcode, WebStorm, Git, GitHub

The most amazing...

...outcome I've achieved is building a niche dating app that has resulted in thousands of dates and several couples.


  • Founder | CEO

    2016 - PRESENT
    • Designed and implemented a native Objective-C matchmaking app.
    • Created matching algorithms using best-in-class approaches to optimize matches and dates amongst the community.
    • Built a chatbot to interact with users; including a state machine mapping dialogue flows and natural language processing to understand responses.
    • Built a Node.js server and RESTful API that supports thousands of production users.
    • Featured in the press; including the Bloomberg Business Week, San Francisco Chronicle, and the New York Observer.
    Technologies: Node.js, Objective-C, Express.js, MongoDB. AWS, Microsoft Bot Platform
  • Co-Founder | CTO

    2012 - 2015
    • Architected and built both the Node.js server and RESTful APIs.
    • Built a native Objective-C client app that was featured multiple times by the App Store.
    • Scaled the product to hundreds of thousands of users.
    • Recruited and managed a team of developers to continue to grow the company and our technology.
    • Was featured in many prominent publications including TechCrunch, Mashable, the New York Times, and more.
    • Held a US patent for the invention of our proprietary color-based feedback system and user interface.
    • Managed the product designers and developers to run a highly efficient development team.
    Technologies: Node.js, Express, Objective-C, MongoDB, AWS EC2, S3, SendGrid


  • Bubby (Development)

    An AI-powered matchmaker that focused on the Jewish community in New York and San Francisco.

  • Knotch (Development)

    The leader in providing data, measurement, and insights for brands around their sponsored content performance.


  • Languages

    Objective-C, JavaScript, Swift, Python, Java, SQL
  • Frameworks

    Express.js, AFNetworking
  • Libraries/APIs

    Node.js, CocoaPods, Facebook SDK, Facebook API, Facebook Login, Stripe, SnapKit, Alamofire, Masonry, Nightwatch.js
  • Tools

    Mongoose, MongoLab, Cron, InVision, Sketch, SendGrid, Photoshop CC, Google Analytics
  • Paradigms

    Mobile Development
  • Platforms

    Apple Watch, AWS EC2, Mixpanel, Docker, Mailgun
  • Storage

    MongoDB, MySQL, AWS S3
  • Other

    Mobile App Development, Web Development, Mobile App Developer, Dedicated iPhone Developer, Facebook Ads


  • Bachelor of Science in Computer Science
    2007 - 2011
    Washington University in St. Louis - St. Louis, MO, USA

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