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Senior React Native Developer (Architecture)

React Native Developer with focus on architecture and state management.

About BEAT81

BEAT81 is a fitness technology startup revolutionizing the way people get fit. By merging the very best of HIIT group training, heart rate technology and expert coaching we are empowering people around Europe, and soon the world, to Sweat Smarter Together! Our outdoor workouts led by fitness experts offer real-time, personalized heart rate monitoring and analytics - transforming the traditional group fitness experience. We think big. We think rebellious. And we're building a world-class team to make BEAT81 a household name in fitness and technology. Join us in our mission to create lasting wellbeing!

About the role

As our react native architect your main responsibility will lie in building our customer app from scratch while turning our workout app into a responsible application for our coaches. You will improve our existing bluetooth solution for heart rate tracking and build additional features that provide additional tracking, new workout programs, integrations of timer and music features and additional external hard- and software. You have the chance of defining the structure of our React Native applications and seeing real-life impact of your work every day.

The Tech Stack

  • Full­stack JavaScript (with all applications running in Docker containers on Kubernetes)

  • Core business logic served through a RESTful API, provided by a microservice based backend (100% Node.js)

  • Frontend landscape consists of modern React SPAs and React Native mobile apps with features like reading Bluetooth heart rate and real-­time leaderboards


  • Architect and build our React Native Apps

  • Find the best solutions in terms of scalability and performance for our very data driven and real-time use cases

  • Maintain and continuously enhance our Apps

  • Take responsibilities in the deployment processes


  • Thorough understanding of JavaScript (ES6, promises, event loop, ...)

  • Thorough understanding of React Native and the React Native ecosystem

  • Thorough understanding of state management libraries (Redux)

  • 3+ years of experience in React Native application architecture and development

  • Experienced in using RESTful APIs

  • Fluent in English

  • German is a plus


  • Modern Tech-Stack and well-structured development process

  • Become part of a highly motivated and international team of Europe’s fastest growing fitness technology company

  • Flat hierarchy where everyone works side by side

  • Train as much as you like with BEAT81, we guarantee that you will get fit working here :)

  • Regular sports and social team events

  • Choose the machine you will be working on

The Ideal Candidate

  • Enjoys building applications from scratch and seeing fast real-life impact of your code

  • Enjoys working and solving problems in a team

  • Is willing to take ownership and operational responsibility

  • Is always willing to learn and improve but also can focus on productivity and "getting things done"

  • Is a strong problem-solver who can apply their engineering skills to a wide range of platforms and environments

  • Likes to work in a dynamic and fast-paced environment

  • Writes clean and testable code and conducts code reviews

We, at BEAT81, believe that a great working environment reflects our diverse world. All are welcome, regardless of your gender identity, your nationality, your sexual orientation, your religion, or a secret dislike of burpees.

All you need is a passion for coding and the desire to be part of one of the fastest growing fitness startups.

Ready to join our team

Send your CV and a short introduction to [email protected]