Software Engineer

React jobs at ZOE


We are combining science, large scale data and machine learning to tell you what to eat based on your unique metabolism. We’re leading the world’s largest ongoing nutritional research project in collaboration with scientists from leading universities including Harvard, King's College London, Massachusetts General Hospital, Oxford and Stanford.

We are a well-funded start-up based in London and Boston, and are backed by founders, investors and entrepreneurs who have built multi-billion dollar technology companies. Join us in tackling wide-ranging technical challenges from DNA analysis, to machine learning, to building apps and products for millions of users.

We're also the Engineering team behind the popular COVID Symptom Tracker - designed by doctors and scientists at Kings College London, Guys and St Thomas' Hospital and our talented development team. This app is contributing to advance vital research on COVID-19 and helping our nation track it's spread.

Key Responsibilities

    • Contribute to the build of our core product and help scale and improve the COVID Symptom Tracker (currently used by 2.5M users)
    • Partnering with UX, Engineering and Product teams to deliver real business impact at high pace
    • Create fast, flexible and user-friendly experiences
    • Keeping your code clean, your tests complete and functional, and your releases frequent
    • Following best practices, and encouraging other team members to use and adopt them

Must Have

    • Minimum 5 years of commercial mobile/web development experience
    • Minimum 2 years experience with React Native
    • Experience managing state with Redux or similar
    • Extensive knowledge of TypeScript and associated patterns
    • Experience with Unit and UI Testing using third party tools (Jest, Appium, Karma, Jasmine etc..)
    • Familiarity with RESTful API design
    • Experience integrating native components in React Native

Nice to Have

    • Experience developing mobile applications using native tools such as Objective-C/Swift, or Java/Kotlin
    • Experience with Expo
    • Good understanding of responsive mobile design
    • Familiarity with CI/CD and app release process with tools like CodePush, App Center, Fastlane, CircleCi or similar. 
    • Experience with A/B testing
    • Experience of working for fast-paced start-ups, with high levels of ambiguity
    • Proactive personality with a passion for Software Engineering and Design
    • Bachelor's degree in Computer Science or a related field

What we can offer

    • Competitive Salary & Share Options
    • The opportunity to make the world healthier, and have fun learning about cutting-edge science across biology and genomics
    • Active contribution against the fight with COVID19 and the opportunity to save lives
    • An exciting early-stage start-up environment, without the funding worries, and with a commercial team that has built billion-dollar revenue businesses
    • A crucial role as one of the first colleagues in a truly world-class multidisciplinary and diverse team
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