Experienced Software Engineer - Fulfillment Order Management (m/f/d)
MediaMarktSaturn Retail Group18 hours ago
Barcelona, SpainSenior
Responsibilities
- Design, implement, and evolve COS REST APIs and event schemas using OpenAPI and API Gateway.
- Develop and orchestrate event-driven order workflows with Kafka, Kafka Streams, and Temporal.
- Model, persist, and propagate order data using Protobuf, MongoDB, and PostgreSQL.
- Synchronize order data with corporate systems and support analytics through Pub/Sub and BigQuery while protecting data quality and PII.
- Operate the platform on GCP and Kubernetes using Flux GitOps, including monitoring, troubleshooting, performance optimization, incident management, and SLA improvement.
- Integrate synchronous and asynchronous services across enterprise systems and maintain reliability, security, auditability, and compliance.
Requirements
- Strong experience building event-driven distributed systems.
- Proficiency in Kotlin on the JVM and solid Java skills; Python or TypeScript familiarity is a plus.
- Experience designing contract-first RESTful APIs with OpenAPI, including versioning, error models, and API gateway policies such as Kong or Apigee.
- Practical experience with relational and NoSQL databases, including schema design, transactions, and performance tuning in high-throughput environments.
- Experience with GCP, Kubernetes, Terraform, Flux GitOps, CI/CD, observability, and production troubleshooting.
- Experience integrating synchronous and asynchronous patterns such as Kafka and Google Pub/Sub across enterprise systems.
- Strong focus on reliability, security, compliance, SLAs, auditability, PII/GDPR, communication, and cross-functional collaboration.
Benefits
- 10% discount on the MediaMarkt website.
- Flexible Pay through the MediaFlex program, including options such as Ticket Restaurant and private health insurance with Adeslas.
- Flexible working hours with the option to combine home office and in-person work; intensive workdays on Fridays and during summer.
- Choice of offices in MediaMarkt Iberia HQ or Pier01 in Barcelona, with an office menu costing less than €4 at the HQ.
- Free coffee and weekly free fruit.
- Training budget and language classes in English, Spanish, and German.
- Paid day off on your birthday.
- Full-time position with 40 working hours per week in Barcelona or El Prat de Llobregat.
Tech Stack
Apache KafkaGoogle BigQueryGoogle Cloud PlatformJavaKotlinKubernetesMongoDBPostgreSQLPythonTerraformTypeScript
Categories
About MediaMarktSaturn Retail Group
MediaMarktSaturn Retail Group is a European consumer-electronics retailer operating the MediaMarkt, Saturn and MediaWorld brands across around 1,000 stores in 11 countries plus online shops. It sells phones, computers, appliances and entertainment products to consumers, alongside related services such as delivery, setup and repairs. Headquartered in Ingolstadt, Germany, the company is owned by CECONOMY AG and also markets own brands including PEAQ, KOENIC, ISY and ok.