Jonathan Matthey

Senior Product Engineer

I build complex web products and frontend systems, from architecture through production.

Jonathan Matthey working on a laptop in the dark

About

I’m a senior product engineer with 13+ years building complex web products. I work primarily in React and TypeScript, with a focus on frontend architecture, performance, design systems, and difficult product interfaces.

I’ve worked across startups, product companies, and studios including Interledger, CourtDrive, ustwo, and R/GA, from early product builds through large production systems.

Work

  • 2025 - Present

    Interledger

    Senior Full Stack Developer

    Replaced Interledger's Drupal site with a React, TypeScript, Astro, and MDX platform. Publishing used to wait on engineers; now the team ships on their own, about 75% faster. I took it from a loose brief through production and set the performance, accessibility, and engineering bar the frontend still uses.

    • Astro
    • MDX
    • React
    • TypeScript
    Interledger Foundation website homepage
  • 2020 - 2025

    CourtDrive

    Senior Full Stack Developer

    Spent five years building CourtDrive, a complex B2B platform for federal court records. I led the frontend architecture, built the Storybook system the team standardized on (new UI landed about 35% faster), and reworked state and rendering, cutting average load times by about 40%.

    • React
    • TypeScript
    • MobX
    • Storybook
    • AWS
    CourtDrive legal platform interface
  • 2019

    Live365

    Senior Front End Developer

    Built Live365's broadcaster dashboard from zero to launch: station creation, track libraries, broadcasting settings, analytics, and onboarding. I owned the React application and worked directly against the platform APIs to turn an existing broadcasting backend into a usable product.

    • React
    • Redux
    • Python APIs
    Live365 broadcaster dashboard
  • 2019 - 2020

    Sked Social

    Senior Front End Developer

    Sked Social was a live social publishing product. I moved the core surfaces, including the caption editor, from Angular 1.6 to React while it stayed in production.

    • React
    • Redux
    • Angular
    • SCSS
    Sked Social product interface
  • 2012 - 2013

    Nike.com Mobile

    Open Standards Developer · R/GA

    At R/GA I partnered with design and UX on nike.com mobile: navigation, checkout, basket, and product pages, from prototype through production. I ran Charles traces on real devices, cut image weight, and measured perceived load time before we shipped.

    beatsbydre.com
    • HTML
    • SCSS
    • JavaScript
    Nike.com mobile frontend