Jobs at Feedzai: Front-end Engineer in Lisbon -


Front-end Engineer

Crushing online payment fraud at Big Data scale

Job details

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Feedzai is a startup with offices in Portugal and Silicon Valley building a groundbreaking product for online fraud prevention and digital payments. Keeping up with the company growth, Feedzai is hiring outstanding Javascript and Web developers to join our elite SaaS product team.

If you like to build silky smooth web user interfaces and know the ins and outs of Javascript, HTML5, the DOM and CSS you’ll fit right in. Join us in disrupting the hot market of digital payments and online fraud prevention!

This position is also available to Coimbra and Porto.


  • Design and implement modern UI components in Feedzai’s SaaS product.
  • Build the JS libraries and frameworks we use to build modern client-side applications.
  • Figure out the application infrastructure to support our web app.
  • Write reusable and testable code using the best tools for the job and participate in code reviews.
  • You’ll be hyper technical - deep understanding and optimization are in our blood.

Main requirements

  • Expert knowledge of JavaScript (not just jQuery) and web technologies (HTML5, CSS) is key!
  • Previous experience with emerging JS app frameworks - at least two of the following: Backbone.js, AngularJS, Ember.js, React.js, etc.).
  • Ability to tease out the right HTML and CSS for a given design.
  • Fluency in English, both written and spoken
  • MSc degree in Computer Science in a top university.

Nice to have

  • Can undertake client and server development, creating the APIs that drive the web app (Scala or Java server experience is valued).
  • Experience in web performance optimization and profiling.
  • Significant contributions to OSS projects.
  • Attention to detail and an eye for quality, when building a user-facing feature.
  • Someone who can bring his/her ideas into the team and is able to work out solutions to tough problems autonomously.


  • Health insurance
  • Free fruit
  • International Free Coffee Selection
  • Weekly workplace gymnastics

Apply now

Sign up to apply

Or sign up to refer and earn a reward of €500