Experienced Software Engineer (Kotlin) - Global Loyalty (m/f/d) - barcelona

Overview La descripción completa del puesto cubre todas las habilidades asociadas, la experiencia previa y cualquier cualificación que se espera que tengan los solicitantes.

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
• Flexible 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 xugodme 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