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Full Stack Developer, Ruby on Rails

As a Full Stack Developer at Launchmetrics Technologies, it’s all about end-to-end ownership. You’ll work on GPS Radar, our ambitious private fashion community with over 50.000 users. Reporting to Director of Technology, you'll be responsible for designing, developing, and deploying new features and frameworks focusing on scalable implementations with high user experience on both Web and Mobile platforms. You’ll work in Ruby on the server, and in JavaScript on the client. You understand that is there no superior technology, only the right tool for the right job. You will work closely with other developers, Lead UI/UX manager, VP Techs and Product Owners in a collaborative and energetic environment. Here, we iterate quickly and refactor frequently, writing clean and simple code to solve critical business needs – and to provide the best experience for Launchmetrics users. You will have a unique opportunity to expand your knowledge on modern systems and development tools. You will be an important part of a fast growing business in the fashion, luxury and cosmetics industry.


  • Create web applications using Ruby on Rails, Javascript (ES6), HTML, CSS, and occasionally other languages
  • Working closely with product management, UI/UX manager and VP Tech to define users’ requirements and translating them into reliable and intuitive features.
  • Evangelizing code quality through writing well architected, structured code, unit tests, while following best industry practices.
  • Refactoring, optimizing and constantly driving for improved efficiency and code health.


  • 4+ years of relevant work experience in full stack developments in SAAS environment.
  • BS Degree in Computer Science or related discipline.
  • A self-starter with a great attitude and passionate work ethic.
  • Excellent problem-solving skills in sophisticated web and mobile applications as part of a fast-paced team in a worldwide context.
  • Effective verbal and written communication skills in both English and French.
  • Strong knowledge of Ruby on Rails framework
  • Knowledge of React JS or strong experience with another JS Framework (Angular, VueJS, Ember etc.).
  • Knowledge of technologies such as Javascript (ES6, JSX), SASS, HTML, Webpack, Babel.
  • Experience with hybrid mobile frameworks (Cordova or React Native)
  • Experience using version control systems: Git, Mercurial, SVN etc.
  • Experience implementing a RESTful api
  • Familiar with Agile methodologies.
  • Ability to adapt, estimate workload, solve problems, self-improve and suggest new ways of improvement.


  • A fantastic opportunity to be part of a fast-paced and rapidly growing company that has revolutionized the industry
  • An incredible work environment – fun, casual, fast-paced with team lunches and outings
  • A passionate, driven and fun international team that is as eager to learn new things as you are.
  • Health insurance offered
  • Restaurant Coupons
  • Company Savings Plan
  • Enterprise Committee
  • Office at the heart of Paris (metro Grands Boulevards)
  • Modern development environment: Agile sprints, code reviews, pair programming, etc
  • Work in a multidisciplinary environment with many teams worldwide that use different tech stacks.

Job Location

  • Paris, France
  • No remote workers

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