Java Engineer (Data) in Barcelona


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Job Description

Who we are:

Marfeel is a publishing platform that revolutionizes the way publishers create, optimize and monetize mobile websites. Over 850 publishers, including USAToday, Euronews, and El Confidencial use Marfeel to serve a billion mobile sessions, every month.

We take a Technology-First approach and have a commitment to developing new tools for digital publishers to reach their audience. Our innovative technology, including PWAs, SEO and engagement tools, monetization and experimentation makes us proud of what we can offer to our clients: faster speeds, greater performance, and worldwide distribution.

Our team now has more than 190 members, made up of over 30 different nationalities. With headquarters in Barcelona and offices in New York and Bogotá, our people and our diversity are the reason behind our world-class product, and we’re still growing.


The role:

We are looking for a Java Engineer to join our Data team and champion projects across our entire Big Data stack, from tracking and data collection to processing and modelling.

This is what you will do:

  • Work on challenging developments on Marfeel’s Data Infrastructure, handling over 1Bn user sessions each month
  • Use up-to-date technologies like modern versions of Java and Spring, Docker, Kubernetes, Microservices, Apache Airflow, Snowflake, ElasticSearch, Looker
  • Work with automated environments with continuous delivery based on Jenkins and AWS, instrumented deployments
  • Work in an agile environment, following iterative development, and focused on quality and performance
  • Be involved and participate in making technical decisions
  • Join a super friendly, collaborative, and talented team where your opinion will be highly valued


This is you:

  • Deep knowledge of Java programming language
  • Strong interest in Data and related technologies, such as Data-warehousing and databases (columnar and distributed preferred) or distributed processing engines (e.g. Spark/Splunk)
  • Experience working within a multifunctional team and collaborating with your peers
  • Eager for knowledge sharing, as well as keeping yourself up-to-date with the technology stack
We will be impressed by:

  • Relational or non-relational databases
  • Other programming languages (SQL, Python, JavaScript preferred)
  • ETL/ELT processes
  • Airflow, Luigi and/or Jenkins
  • Tracking and events modelling
  • Modern BI tools (Looker preferred)
  • AWS services and the challenges of deploying large applications in the cloud
  • Microservices (Docker, Kubernetes)
  • Full-stack development


This will be you as part of the Marfeel team:

  • Open-space, light-filled and eco-conscious office with large sunny terrace
  • Unlimited refreshments including coffee, tea & soft drinks
  • Subsidized healthy & tasty lunch delivered to the office & free fresh fruit
  • Ping-pong, video games, table football and other games for down-time
  • Free language and yoga classes at the office
  • Subsidized monthly plan to a huge network of health & wellness centres (Andjoy)
  • Transport, restaurant & kindergarten tickets
  • Subsidized health insurance for you and your partner/family
  • Flexible working hours and early finish on Fridays
  • Loyalty sabbatical and vacation days
  • Access to training platforms, courses & materials
  • Referral bonus for talent brought to us by you


About Marfeel

  • Ad Tech

  • Barcelona

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