Back End Engineer

Adevinta

Adevinta

Software Engineering
Barcelona, Spain
Posted on Sep 10, 2025

We’re Adevinta, a global leader in digital marketplaces. Our household name brands, including Marktplaats in the Netherlands, mobile.de in Germany and leboncoin in France, reach hundreds of millions of people every month.

We’re all about matchmaking, and our sites help people find whatever they’re looking for in their local communities – whether it’s a car, an apartment, a sofa or a new job. Every connection made or item found makes a difference by creating a world where people share more and waste less.

Our brands are supported by global Tech Hubs in Barcelona, Amsterdam, Paris and Berlin. Their goal is to develop common global products and innovation platforms which all of our brands can use. This means using cutting edge technology to create highly scalable, customisable and secure products and components that free up development time and leverage our access to global data.

What you’ll do ​& Who you are

This role is based at our Barcelona Tech Hub, where we develop cutting-edge technology to power our marketplaces at scale. As part of a cross-functional product development team, you will contribute to the success of Kleinanzeigen, Germany's leading online classifieds platform with over 36 million monthly users and 50 million active listings.

You will join Team Pro-2, one of the team in charge to boost a key area of revenue of Kleinanzeigen, the PRO Seller area. Our main focus is to grow the number of professional sellers and increase their efficiency. You will report directly to the Engineering Manager of the team. This is a hybrid role, and our lovely new office that combines modern amenities with the charm of Barcelona.

What You'll Do

  • Work in a product development team together with backend and frontend engineers, as well as product and design.
  • Build the technology future of online classifieds in a scalable, clean way.
  • Improve our Java platform to make it better every day.
  • Handle up to 60k requests per second while the platform is still growing.
  • Ensure code quality and maintainability by improving build and test systems
  • Be involved in the whole development lifecycle from architecture to QA and publishing.
  • Promote your own ideas for code improvements and process improvements, and achieve the next level together with the team.
  • Partner with our product and UX specialists to continuously improve our platform.
  • Research and prototype solutions to exciting problems.

What You'll Bring

  • 1-3 years of experience developing backend services with Java.
  • You have a passion for writing clean code and an eye for simplicity and pragmatism.
  • Experience with Spring Boot and the broader Spring ecosystem.
  • Experience with relational databases (MySQL or other), cloud-native development (AWS), version control systems (Git, Github), containerization technologies (e.g., Docker, Kubernetes), distributed message brokers (e.g., Kafka, Kinesis/Firehose), and monitoring and observability systems (Grafana or Datadog).
  • Familiarity with continuous integration and deployment (CI/CD) tools such as Jenkins or GitHub Actions.
  • Understanding of APIs, microservices architecture, and server-side processes
  • Fluent English, both written and spoken.
  • True team player with an excellent collaborative mindset and a drive to face challenges and learn.
  • A passion for continuous learning and knowledge sharing.

Benefits

Life at Adevinta comes with its perks! Our Adevintans enjoy the following benefits:

  • An attractive Base Salary 💸

  • Participation in our Short Term Incentive plan (annual bonus) 🏆

  • Work From Anywhere: Enjoy up to 20 days a year of working from anywhere! Maybe not from the moon🌛well why not! just make sure you have internet connection! 🌍

  • A 24/7 Employee Assistance Program for you and your family, because we care ❤️

  • Win together, lose together is one of our key behaviours. At Adevinta you will find a collaborative environment with an opportunity to explore your potential and grow 🌱

On top of these, we also provide a range of locally relevant benefits. Wanna know more? Apply and ask our recruiters! ✨

Adevinta is an equal opportunity employer and we value diversity. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status or disability status.

If you feel like you don’t meet all of the requirements for this role but are interested, please consider applying anyway. Research suggests that women and individuals from underrepresented groups may self-select out of opportunities if they don’t meet 100% of the job requirements. We strongly encourage people from historically excluded groups to apply and look forward to speaking with you.