Senior Software Engineer

Amsterdam, Netherlands


Are you passionate about Java and Big Data technologies and do you enjoy designing and developing systems that are reliable at scale and flexible to product innovations? Do you like to address complex architectural problems with simple and intuitive designs, while being able to communicate technical ideas and direction across the organisation? Our product development is expanding and looking for a Senior Software Engineer!

Who is Relay42?

Relay42 has grown from a start-up to a champion in data marketing technology in Europe. We help top brands achieve a 360-degree view of their customers by connecting all data points and personalizing 1 to 1 communication across all channels and devices in a scalable way. We have become a market leader in the Netherlands, and we are now connecting the rest of the world.

Your role:

As a Senior Software Engineer, you will be involved in designing and developing systems that are reliable, scalable and flexible to product innovations. You assure that the code quality is high and consistent. Your passion for technology makes you a true master in not only Java but also in Big Data technologies, all of which while thinking in a completely cloud-native mindset. As part of the product development team, you love to address complex architectural problems with simple and intuitive design, while being able to communicate technical ideas and direction across the organisation. You will work on new projects such as Orchestration Engine or Cloud Data Connector and you will be involved in improving the battle-tested parts of the Relay42’s Data Management Platform.

Working on delivery of our product (80%)

- Design and develop systems which are cloud-native, reliable and globally scalable

- Code review the work of your teammates to ensure high code quality

- Making sure the systems run smoothly in production

Being part of team development (20%)

- Continuously help to improve on team process

- Mentorship for less senior members

- Knowledge sharing


What are we looking for?

Our ideal candidate has experience working in a professional product driven environment. The candidate is a true expert in Java but has also good knowledge of Cassandra, Kafka and/or Spark and can communicate with technical and non-technical people. The candidate is passionate about high code quality and will be almost exclusively involved with backend and infrastructural tasks but shouldn't be afraid when shown React.js. The candidate is known to evangelize best practices and knows how to properly introduce new technologies to an existing architecture. Furthermore, the candidate takes CI/CD pipelines and performance testing seriously and makes sure that the piece of code is covered with unit and integration tests such as Selenium and Protractor testing.


  • 4+ years of experience working in a professional product-driven environment
  • Experience with the Java, Spring Ecosystem
  • Experience with Big Data stack (ex. Cassandra, Kafka, Spark)
  • Experience with Version control systems (Git)
  • Experience with Unix / Linux
  • Experience with the full deployment cycle


  • Experience with the Atlassian stack (Jira, Confluence)
  • Experience with AWS Cloud
  • Experience with Scrum/Kanban

What’s in it for you:

Competitive salary and great benefits. Working with a highly motivated team and last but not least, the opportunity to work in an informal environment with ample opportunities for professional development on projects that impact millions of consumers worldwide.

  • Pioneering entrepreneurial atmosphere
  • Training, conferences and personal development opportunities
  • Working for one of the fastest growing CDP +Journey Orchestration platforms in Europe
  • A fun, dynamic workplace with everything from ping pong and foosball to a comfy relaxation room
  • Communal lunch & Healthy and less healthy snacks all day long
  • Weekly bootcamp on location
  • Flexible working hours and workspace
  • A fun and connected community with monthly and quarterly meetings/events & Innovation week
  • Pension scheme