Senior Backend Engineer

SIX

Madrid, Community of Madrid, Spain Full-time May 31, 2026

Opportunity Description

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

What You Bring

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 ou...

Full-time Computer Occupations

Submit your application for Senior Backend Engineer at SIX

Location Madrid, Community of Madrid

Country Spain

Type Full-time

Category Computer Occupations

Posted May 31, 2026

Deadline July 10, 2026