OverviewIn 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 / Beneficios10% discount on MediaMarkt website
Adaptable 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)
ResponsabilidadesDesign, 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 principales5+ 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)
collaboration and pair programming
initiative in code improvements and architecture decisions
strong problem-solving and analytical thinking
Kotlin (JVM)
Google Cloud Platform (BigQuery, GKE, Pub/Sub)
MongoDB Atlas

📌 Experienced Software Engineer (Kotlin) - Global Loyalty (M/F/D) - Barcelona
🏢 Mediamarktsaturn
📍 Barcelona