Java / Kotlin Backend Developer

Your new company Electronic retail company

Your new role We are looking for a Backend Software Engineer (Kotlin) to join the global Loyalty Development team, responsible for building and evolving products related to Loyalty & Customer Data.You will be involved in designing and developing scalable, cloud-native solutions that deliver personalized customer experiences across different channels and touchpoints.Your main responsibilities will include:

• Designing, developing, and maintaining backend services using Kotlin.
• Building and managing scalable infrastructure with Terraform, Docker, and Kubernetes.
• Working in GitOps environments using Flux.
• Creating and maintaining CI/CD pipelines with GitHub Actions.
• Working with Google Cloud Platform (GCP) services, particularly BigQuery, GKE, and PubSub.
• Integrating APIs and ensuring code quality through automated testing using Kotest and Testcontainers.
• Collaborating actively within agile methodologies such as Scrum and Kanban.
• Contributing to the continuous improvement of development processes, architecture, and engineering best practices.

What will you need to fit in it? 4+ years of professional experience as a Backend Software Engineer.

• Strong experience with JVM technologies, ideally Kotlin and its ecosystem.
• Knowledge of Docker and Kubernetes.
• Experience with, or interest in, Infrastructure as Code (IaC), particularly Terraform.
• Familiarity with GitOps practices and CI/CD tools such as GitHub Actions.
• Experience working with cloud services, preferably Google Cloud Platform (GCP).
• Knowledge of API integration and management.
• Ability to thrive in international teams and collaborative environments.
• Strong problem-solving mindset with a focus on continuous improvement.
• English proficiency sufficient to work effectively in a global environment.

What will you get in return?Permanent, direct contract with the end client.

• Long-term opportunity.
• Location: Barcelona (Barceloneta or El Prat de Llobregat).
• 4 remote working days per week.
• International and technology-driven environment.
• Fixed salary of up to €50,000 gross per year, depending on experience.
• 27 days of annual leave.
• Annual salary review (currently hiring for 2028).
• Career development plan.