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React Developer in Barcelona


Est. Salary
26,000 - €36,000
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Job Description

Who we are:

Be part of Marfeel, one of the hottest European start-up companies in the mobile ad-tech world. Named as Wired Magazine’s 2015 Top 100 Startups, Inc.5000 nº 1 Fastest Growing Marketing and Advertising Private Company in Spain in 2017, and 16th out of Europe’s 1000 fastest-growing companies by the Financial Times in 2018. We are recommended at the very top by Google itself for our mobile design solution. Together with our partners we have over 6 billion worldwide readers and over 20 billion page views. Our headquarters are based in sunny Barcelona.

Certified Google Publishing Partner

Certified Facebook Instant Articles Official Partner

We are looking for a ReactJS Developer to join our team in Barcelona.



You can solve technical problems equally well with OO, DOM oriented, or functional JS.

You have >2 years' experience in ReactJS

You have the ability to create an interface using JavaScript, HTML and CSS.

You have a 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.).

You have demonstrable experience with cross-browser JS and CSS development. If you also have experience in Java that will be great.

You have experience with client-side site development in JS.

You have a solid understanding of HTML5 tags - functions and intent.



We will be impressed if:

You have experience with RequireJS, SASS and Jasmine.


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

Experience with Google Analytics.

Experience with AdServing.

You have experience with various AWS services and understand the challenges of deploying large applications in the cloud.



This will be you as part of the Marfeel team:

Working in an international, multicultural and talented team and enjoying our sunny terrace.

We have more than 27 nationalities so you will not get lost in translation.

Flexible working-time.

Free commodities (coffee, tea, juices, etc).

Ping-pong, Mario Kart and foosball tournaments.

Free language and yoga classes

Team building events!

Transport, restaurant and kindergarten tickets.

Training, books and all you need to feel empowered.

And a Referral Bonus if you bring other talented people like you.


About Marfeel

  • Ad Tech

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