Kristo Jorgenson, Software Developer in Amsterdam, Netherlands
Kristo Jorgenson

Software Developer in Amsterdam, Netherlands

Member since August 7, 2016
Kristo studied engineering and physics at Dartmouth College and left school to found a startup developing software for athletes and coaches. While there, he learned JavaScript and particularly React. He has built performant React web apps with an intense focus on the user experience and functional design. Kristo's since gone back to school for a degree from Columbia University in computer science.
Kristo is now available for hire




Amsterdam, Netherlands



Preferred Environment

Visual Studio Code, iTerm, Git, OS X

The most amazing...

...thing I have built is a React Native iOS and Android app for interacting with a coach and tracking workouts to visualize progress of a fitness plan.


  • Software Developer

    2018 - 2019
    Spine Institute of Idaho
    • Created a large web site for a doctors office.
    • Achieved a 96 speed rating on Google Lighthouse.
    • Tested the site across multiple browsers and operating systems to ensure usability for all potential patients.
    • Used code splitting and static rendering to make sure only the minimum amount of data is initially served, making the large site very fast on old mobile devices.
    • Formed an image-loading strategy to only serve images that were visible, and only at the size required for the device, thus making the site faster.
    • Created and input content for the doctors office.
    Technologies: React, GraphQL, Gatsby, Styled Components, Flow, Contentful API
  • Web Developer

    2017 - 2017
    Levantine Films
    • Built the public-facing website for the Oscar-winning production company Levantine Films.
    • Designed the website and logo based on loose sketches from the client.
    • Designed, developed, and shipped a highly maintainable custom site in 4 weeks.
    • Built a custom React.js carousel component for use throughout the site.
    • Used SVG animations to create hover animations for the logo.
    • Used dynamic import to code-split and preload components after initial render.
    • Connected the app to GraphCMS and a GraphQL CMS so that the client can add, update, and edit their content at any time.
    • Used React Apollo to write component-based data requirements and cache the results.
    • Implemented the site as a progressive web app which means it comes with the performance of service-workers by default.
    Technologies: React, GraphQL, Apollo, Styled Components, Webpack
  • Web Developer | Designer

    2016 - 2017
    Garden Collage
    • Translated the client's vision for their garden and lifestyle shop into a complete design.
    • Implemented the redesign over an existing Shopify theme.
    • Worked with other contractors to address interoperability between their "shop" site and their publication site.
    • Used LESS and liquid templates to add new shipping features and product layouts to the client's site.
    • Smoothly transitioned the maintenance of the site to in-house developers.
    Technologies: JavaScript, HTML, CSS
  • Web Developer | Designer

    2016 - 2016
    Beatrice Helman
    • Translated her vision of a grandma's house Christmas theme to a cute responsive design.
    • Used hand-drawn vector graphics to add a personal, non-techie touch.
    • Created a realistic "sparkle" animation using HTML5 Canvas.
    • Connected the single-page app to a content management system for the client to update her content at will.
    • Used JavaScript to implement responsive images for the fastest possible load times.
    Technologies: React, ES2017, Webpack, Babel, HTM5 Canvas, Styled Components
  • Co-founder | Developer

    2015 - 2016
    • Led the product definition and development, particularly on the mobile-side.
    • Developed a cross-platform React Native app for both iOS and Android.
    • Wrote the code for Bluetooth heartrate monitoring, geolocation, and messaging.
    • Successfully marketed and sold the app to the largest endurance training organization in the world.
    • Utilized Redux and Immutable.js to maintain all application data.
    • Implemented shareable deep links to specific app views.
    • Maintained a vanilla JavaScript web app and progressively transitioned it to React.js.
    • Implemented Redux to manage the state in our hybrid vanilla JavaScript and React web app.
    • Integrated a support chat and designed and built onboarding workflows for multiple user cohorts.
    Technologies: React Native, ES6+, Webpack, JavaScript


  • Spine Idaho Website (Development)

    I built this site using React, Gatsby, GraphQL, styled components, and other modern technologies. It scores very high on Google Lighthouse (which means it is fast) and is designed to be user-friendly and modern.

  • Beatrice Helman's Personal Site (Development)

    I designed this site based on the (unique) grandma's house and Christmas theme provided by Beatrice; I developed it with React with JavaScript animations and responsive images.

  • Sixcycle Mobile (Development)

    This is a React Native iOS and Android app all in one code base; includes messaging, geolocation workout recording, Bluetooth heart rate, and more.

  • Levantine Films Website (Development)

    I built this public-facing site for Levantine films using React, Apollo-GraphQL, and a GraphCMS back-end.


  • Languages

    HTML5, GraphQL, ES8, JavaScript, CSS, ECMAScript (ES6), TypeScript, Python 3, Java, Reason ML
  • Frameworks

    Redux, Graphcool, React Native, Loopback, Next.js, YARN, Relay
  • Libraries/APIs

    React, GatsbyJS, FlowType.JS, Node.js, React Router, jQuery
  • Tools

    Gatsby, Flow, Babel, Webpack 2
  • Platforms

    Web, Visual Studio Code, Contentful, Heroku, iOS, Firebase
  • Other

    Styled Components, Server-side Rendering, Apps, Apollo, Code Splitting
  • Paradigms

    Asynchronous Programming, Functional Programming
  • Storage



  • Bachelor of Arts degree in Computer Engineering (Artificial Intelligence)
    2016 - 2018
    Columbia University - New York City, NY, USA
  • Completed credits towards a bachelor's degree in Engineering Systems
    2012 - 2014
    Dartmouth College - Hanover, NH, USA

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