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Junior JavaScript Developer

Publishing, media, mobile, advertisement, technology, Barcelona, start-up: all-in-one!

Job details

  • Full-time
  • calendar
  • map markerBarcelona, ES
  • globeRelocation paid
  • homeWork from home allowed
    Companies who have a 'work from home' policy typically allow employees to stay at home a few days per month.
  • cardRequires Work Permit
    Requires that you're a citizen or have a valid work permit / visa sponsorship to work in the country in which this position is based.
  • routeJunior
  • routeEnglish
    Preferred spoken language

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Marfeel, one of the hottest European start-up companies and Certified Google Publishing Partner, is looking for JavaScript Developers to join their team. Our headquarters are based in sunny Barcelona and our office has a huge terrace to enjoy.

This is you:

  • Your life begin and ends with a slash
  • You feel like you have a mission not just a task and you write testable front-end code in JavaScript and HTML/CSS
  • You understand iterative development and a day without pushing code makes you sad
  • You’re not afraid to crack open an existing code base and bend it to your will
  • Self-starter is your middle name. You can take or come up with a high-level idea and run with it
  • You have a real understanding of building products that work at web scale
  • You can’t imagine your life without a whiteboard, open-source boards and definetly CODE
  • You know the importance of being part of an universe where all the departments need each other and work together for a mutual goal. So, your communication shows both tech and functional command what you’re doing
  • As a software craftsman you will advocate and practice pair-programming, test-driven development, collective-code ownership, continuous integration, and refactoring
  • You care about online news and user experience
  • International team player
  • Eager for knowledge
  • Lots of stamina, you get bored if you don’t have nothing to do
  • Hands-on and proactive
  • And most of all, you are passionate about technology

If this sounds like you, we want to hear from you. We're right for each other!

Main requirements

  • You can solve technical problems equally well with OO, DOM oriented, or functional JavaScript

  • Ability to create an interface using JavaScript, HTML and CSS

  • Solid understanding of the web technology stack (i.e. headers, cookies, cross-domain restrictions, https, caching, optimization opportunities, hardware acceleration, junk and scroll performance, etc.)

  • Demonstrable experience with cross-browser JavaScript and CSS development

  • Experience with client-side site development in JavaScript

  • Solid understanding of HTML5 tags — functions and intent

  • Fluent english (it’s a must)

Nice to have

  • Experience with RequireJS, SASS and Jasmine

  • ReactJS or AngularJS

  • #perfMatters

  • Experience with more recent web technologies (i.e. localStorage, geolocation, CSS transitions and transformations)

  • Experience with GoogleAnalytics

  • Experience with AdServing

  • Experience with various AWS services and understand the challenges of deploying large applications in the cloud

  • Familiar with Agile methodologies

  • If you also have experience in Java that will be great :)


  • International and multicultural team (now 22 nationalities and more than 8 languages). You will not get lost in translation
  • Flexible working hours
  • Free coffee, tea, juices and soft drinks
  • Sunny office terrace
  • Ping-pong tournaments
  • Nerf guns
  • Team building events
  • Training, books and all you need to feel the empowerment
  • And, Referral Bonus if you bring other talented people like you

Apply now

Sign up to apply

Or sign up to refer and earn a reward of €300