Java Engineer - Auction Strategy at trivago N.V. (Düsseldorf, Germany)

Are you an experienced and motivated Java engineer with a passion for performant algorithm design and applied data science? Are you interested in working with big data-driven applications that are highly scalable and distributed? Do you love learning new technologies?

Our Auction Strategy team is looking for a new team member to join our interdisciplinary group of engineers and data scientists who are working to bring machine learning and predictive algorithms into production. If you are looking for a role in a dynamic, challenging, and innovative environment where your work has a direct, visible impact, you have come to the right place!

What you'll do:

  • Work on the Java microservices, implementing auction algorithms and machine learning models to make business-congruent decisions that satisfy trivago’s users and partners.
  • Leverage current technologies to develop, test, deploy, and monitor new algorithms within a large-scale, distributed backend system.
  • Analyze the effects of algorithm changes and monitor performance data with Python, Hive, and other industry standard languages and tools.
  • Use profiling tools to tune performance-critical components.
  • Implement tools and interfaces for data scientists and stakeholders.
  • Contribute to the growth of our team through learning and sharing new topics.

Our tech stack:

  • Java 16, Spring Boot, Gradle, gRPC.
  • Docker, Kubernetes, Google Cloud.
  • Python, JupyterLab, Pandas.
  • Elasticsearch, Kibana, Grafana.
  • Kafka, Hive on Tez, Impala, Apache Spark.

What you'll definitely need:

  • Solid skills in Java and Java-ecosystem frameworks and tools.
  • Working knowledge of Java concurrency and safe coding practices.
  • A strong desire to write maintainable, performant software.
  • Knowledge of at least one scripting language (we like Python).
  • An interest for Data Science and/or related work experience.
  • Strong interpersonal communication skills to work closely with other team members.
  • A passion for improving your technical skills and staying current with advancements within the industry.

What we'd love you to have:

  • A good overview of machine learning and statistics.
  • Experience with Apache Kafka.
  • Basic knowledge of Hadoop / Hive / Impala and/or Spark.
  • Experience working with cloud environments.

What you can expect from life at trivago:

Entrepreneurship: The freedom to take ownership of your work and drive initiatives independently. It’s the idea that counts, not the position.
Growth: Support for your development, constant new opportunities, regular peer feedback, mentorship and training.
International workforce: Collaboration with international talents from 80+ nations bringing different perspectives, backgrounds and expertise together to ensure a truly global focus.
Flexibility: Self-determined working hours and the opportunity to split your time between home and our campus in Düsseldorf: At least 2 days on campus and 3 days at home per week. We also offer further flexibility for parents of young children and talents with severe disabilities or health conditions.
Relocation and integration: Support with relocation costs, work permit and visa questions, insurance and free language classes.
Equal opportunity: Commitment to creating an all-inclusive workplace, because we know representing the diversity of our users in our talent base enables us to create a more meaningful product.

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