OverviewIn this role you design and evolve COS REST APIs and event schemas to enable seamless, contract-first integrations.

You orchestrate robust, event-driven order workflows and ensure reliable, auditable processing across enterprise systems.

You model and propagate order data with strong data quality and privacy safeguards, enabling real-time synchronization and analytics.

You operate a cloud-native platform on GCP/Kubernetes with GitOps, continuously improving performance, security, and SLAs.

You will work closely with cross-functional teams to turn complex order data into scalable, value-driving solutions.

Compensaciones / Beneficios10% discount on MediaMarkt site

Adaptable Pay (MediaFlex program)

Flexible working hours and home office options

Training budget for skill development

Language classes (English, Spanish, German)

Birthday off

ResponsabilidadesDesign, implement, and evolve COS REST APIs and event schemas (OpenAPI, API Gateway) for contract-first integrations

Develop and orchestrate event-driven order workflows using Kafka/Kafka Streams and Temporal

Model order data (Protobuf) and manage persistence across MongoDB and PostgreSQL; support real-time syncing to corporate systems





Enable analytics via Pub/Sub to BigQuery with data quality and PII safeguards

Operate the platform on GCP/Kubernetes with GitOps (Flux); monitor, troubleshoot, and optimize performance and SLAs

Ensure reliability, security, and auditability of customer order data; drive incident management and cross-functional collaboration

Requisitos principalesStrong experience building event-driven, distributed systems

Proficiency in Kotlin on the JVM; solid Java skills

- Python or TypeScript a plus

Experience designing contract-first RESTful APIs with OpenAPI, including versioning and API gateway policies

Practical experience with MongoDB and PostgreSQL;

experience with schema design and high-throughput transactions

Cloud-native operations on GCP

- Kubernetes and Terraform
- GitOps (Flux)
- CI/CD; observability

Integration expertise across synchronous and asynchronous patterns (Kafka, Google Pub/Sub)

Focus on reliability, security, and GDPR/PII compliance; strong cross-functional communication clear communication cross-functional collaboration problem-solving

Kafka

Kafka Streams

Temporal

📌 Experienced Software Engineer - Fulfillment Order Management (M/F/D) (Barcelona)
🏢 Mediamarktsaturn
📍 Barcelona