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

Software Developer in San Francisco, CA, United States

Member since May 13, 2017
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
    Amazon Web Services (AWS), Microsoft, MongoDB, Express.js, Objective-C, Node.js
  • Knotch
    SendGrid, Amazon S3 (AWS S3), Amazon EC2, MongoDB, Objective-C, Express.js...



San Francisco, CA, United States



Preferred Environment

GitHub, Git, WebStorm, Xcode, OS X

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: Amazon Web Services (AWS), Microsoft, MongoDB, Express.js, Objective-C, Node.js
  • 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: SendGrid, Amazon S3 (AWS S3), Amazon EC2, MongoDB, Objective-C, Express.js, Node.js


  • Bubby

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

  • Knotch

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


  • Languages

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

    Angular, 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, Xcode, WebStorm, Git, GitHub, SendGrid, Photoshop CC, Google Analytics
  • Paradigms

    Mobile Development
  • Platforms

    Apple Watch, Amazon EC2, OS X, Microsoft, Amazon Web Services (AWS), Mixpanel, Docker, Mailgun
  • Storage

    MongoDB, MySQL, Amazon S3 (AWS S3)
  • Other

    Mobile App Development, Web Development, 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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