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# Backend Engineer

- **Company:** NN Group
- **Location:** Barcelona, Spain
- **Salary:** €52,000.0 - €65,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Agile Methodology, Software Quality, Continuous Integration, Relational Databases, Software Design Patterns, Elasticsearch, Java Platform Enterprise Edition (J2EE), NoSQL, RabbitMQ, Software Engineering, Spring-boot, Backend, Git, Kubernetes, Restful APIs, Docker, Jenkins, Microservices
- **Published:** July 17, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

Must have skills:
Strong knowledge on good practices, testing and design patterns
You are proficient in business English
You know how to deliver code from development to production
Experience with RESTful APIs (implementation and consumption)
Knowledge of relational databases and SQL
We use these technologies, so it would be a plus if you have experience in:
Java (J2EE/ Java 17)
Spring / Spring Boot frameworks
REST APIs
NoSQL databases
Familiarity with Docker/Kubernetes environments
Used to working with tools like Git, Jenkins, CI/CD pipeline
Exposure to Elasticsearch, RabbitMQ or Agile methodologies

## Description

We are looking for a Backend Engineer to join the engineering team with outstanding software development talent proven by great work results/experience. Somebody that cares about code quality and not just get things done, but get things done right.
If you're smart, have great energy, can't think about a system without a CI/CD pipeline and you want to thrive in a fast paced environment, we are in sync.
What would you do at Fever?
On your first month in Fever:
You will be fully integrated into the team. You will participate in plannings, groomings and retrospectives of the team, and you will have met the departments of Fever.
You will get familiar with Fever's tech stack: frameworks used to develop our applications, CI/CD workflows and infrastructure that support our operations.
You will have lots of Pull Requests merged and running in production.
You will attend some of the Fever Original's experiences like Candlelight.
After 3 months in Fever:
You will be able to come up with solutions to new difficult problems, defining the solution from the architecture design to its implementation.
You will continue creating production grade Java code designed to handle high levels of traffic, measuring the outcome of the functionalities and improving the product.
You will participate in some of the hackdays or hackathons we organise with other teams, and you will mostly know everybody from engineering.
On your 6th month in Fever:
You will have responsibilities over different parts of the systems, analysing the usage from the users and evolving the platform to meet the user's needs.
You will have participated in the launch of one of our microservices
You will participate in some of the team buildings we organise for your team or the whole engineering team.


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