Overview In this role you will design, build and operate backend services for a Europe-wide loyalty platform, enabling scalable, reliable customer experiences. You’ll collaborate with cross-functional teams to deliver cloud-native solutions that support growth and improve loyalty interactions. You will work with cutting-edge tech and DevOps practices to ensure high availability and rapid delivery. This is a hands-on, impact-driven position in a collaborative, remote-friendly environment with a strong focus on continuous learning and architecture decisions. Compensaciones / Beneficios * 10% discount on MediaMarkt website * Versátil Pay (MediaFlex program) * Flexible working time with home office option * Offices in Barcelona area options * training budget for skill development * language classes (English, Spanish, German) Responsabilidades * Design, implement, maintain and operate backend services to support scalable applications for Customer & Marketing using Kotlin * Build and manage scalable systems with Terraform, Kubernetes, Flux (GitOps)



and Docker * Develop CI/CD pipelines with GitHub Actions for efficient deployments * Utilize Google Cloud products (BigQuery, GKE, Pub/Sub) and MongoDB Atlas to optimize cloud apps * Apply test frameworks like Kotest and Testcontainers to ensure high-quality code * Contribute to agile processes (Scrum/Kanban) and continuously improve development practices * Participate in regular on-call rotations to ensure high availability Requisitos principales * 5+ years of professional software development experience * Kotlin (JVM) backend development * Strong server-side backend expertise * Experience with event-driven architectures and GCP Pub/Sub * NoSQL databases knowledge, especially MongoDB * Containerization/orchestration (Docker, Kubernetes) with hands-on experience * IaC experience with Terraform (a plus) * Ktor as web framework (a plus) * Arrow functional programming library (a plus) * Kotlin coroutines familiarity (a plus) * col

📌 Experienced Software Engineer (Barcelona)
🏢 Mediamarktsaturn
📍 Barcelona