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# Backend Engineer

- **Company:** Mercados Españoles
- **Location:** Madrid, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Databases, Distributed Systems, Spring Framework, WildFly (JBoss AS), Data Streaming, Spring-boot, Backend, Event Driven Architecture, Apache Kafka, Restful APIs, Microservices
- **Published:** July 17, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

Very strong experience with Java backend development and modern backend design principles
Experience with Spring and Spring Boot for building microservices
Experience with Kafka or other messaging / event-streaming platforms
Knowledge of Wildfly/JBOSS is a big plus
Experience designing RESTful APIs and working with SQL databases
High english level, both writen and spoken, to interact with our international colleagues

## Description

Do you want to work in a highly dynamic environment and build reliable, scalable backend systems? Are you passionate about Java, distributed systems, and event-driven architectures? Then our Backend Engineering Team wants to hear from you.
We are an agile and collaborative team responsible for designing and operating core backend services that power our platform in the Post Trading area of the SIX Swiss Exchange. Our goal is to build & maintain robust, scalable, and maintainable systems that support critical business processes.
In this position, you will work closely with software engineers, architects, and product teams to design, maintain and deliver high-quality backend solutions.
Apply now with your CV in English.
What You Will Do
Design, develop, and maintain backend services and REST APIs using Java, Spring, and Spring Boot
Build and operate event-driven services using Apache Kafka
Develop and maintain applications running on Java application servers such as WildFly
Collaborate with engineers and architects on system design, architecture, and technical improvements
Ensure reliability, scalability, and performance of production systems


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