Senior Java Engineer

Company: Marfeel
Job type: Full-time

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 Senior Java Engineer to join our core product team, responsible for the backend system infrastructure which gives service to 700 million worldwide monthly readers. We are continually evolving our architecture and we love tackling the challenges that this involves, such as high concurrency and performance, always keeping our focus on quality and coding standards.


This is what you will do:

  • Work on challenging developments, involving high concurrency and affecting millions of users.
  • Use up-to-date technologies like modern versions of Java and Spring, Docker, Kubernetes, Microservices…
  • Work with automated environments with continuous delivery based on Jenkins and AWS, instrumented deployments…
  • Work in an agile environment with weekly sprints, 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.


What we are looking for:

  • You have deep knowledge of the Java language and parallel code execution.
  • You have strong experience with Spring IoC, Spring MVC, Spring Data.
  • You have a solid understanding of the web technology stack and building software that works at scale.
  • You have experience and understanding of OO principles, applying design patterns and maintaining simple designs.
  • You are well-versed in clean code practices.
  • You have experience working within a multifunctional team and collaborating with your peers.
  • You understand the advantages of iterative development.
  • You are eager for knowledge, keeping yourself up-to-date with the technology stack.
  • You have experience with relational and/or non-relational databases.
  • Fluent English is a must.


We will be further impressed if:

  • You have experience with various AWS services and understand the challenges of deploying large applications in the cloud.
  • You are experienced with microservices (Docker, Kubernetes)
  • You have knowledge of these technologies: Nginx, Tomcat, MongoDB, Quartz, Deployment technologies
  • Deep knowledge of the Spring framework, including Spring Security


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 30 nationalities.
  • Flexible working-times.
  • 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.

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