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Marfeel Published: December 27, 2018
Barcelona, Spain
Job Type


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

If you feel like a JS/Java Full-stack Developer, be part of Marfeel, one of the hottest European start-up companies!

This is you:

  • You treat your work like a mission, not just a series of tasks

  • You live for iterative development; 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

  • You were born a self-starter; you can take or come up with a high-level idea and run with it until it's done

  • You have lots of stamina and get bored if you've got nothing to do

  • You're eternally curious and hungry for knowledge

  • You're a team player, and know the importance of working with other departments, technical or not, in achieving goals

  • You aren't afraid to get your hands dirty

  • You're experienced in the art of building web products that work at massive scale

  • You're not a programmer, you're a craftsman/craftswoman

  • You love these things: pair-programming, test-driven development, refactoring, collective-code ownership, continuous integration, refactoring

Main requirements:

  • Can solve technical problems equally well with OO, DOM oriented, or functional JS

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

  • Ability to develop server & client side in a end-to-end

  • 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.)

  • More than 2 years of experience building software that works at web scale

  • Demonstrable experience with cross-browser JS and CSS development

  • Solid understanding of HTML5 tags (functions and intent)

  • Experience developing web architectures with Java and the Spring framework

  • You have strong experience in REST, Spring IoC, Spring MVC, Spring Data.

  • You are familiar with parallel code execution.

  • You are well versed in clean code and practices such as code by intent.

  • Familiarity with testing libraries like JUnit, Mockito and integration testing


Nice to have:

  • Experience with RequireJS, SASS and Jasmine

  • ReactJS

  • AngularJS

  • Experience with AdServing

  • Spring Security

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

  • Deployment technologies

  • Nginx, Tomcat, MongoDB, Quartz

  • 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

  • #perfMatters

This will be you as part of the Marfeel team:

  • Working on 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, all you need to feel the empowerment.

  • And, Referral Bonus if you bring other talented people like you.

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