OverviewIn this role you will develop and maintain the online order processing services, building robust APIs and integrations with enterprise systems.

You will orchestrate end-to-end order workflows across platforms, ensuring real-time processing, data consistency, and security.

You'll work within a cross-functional team to scale a Customer Order Management platform in a cloud-native environment.

This is a hands-on role with meaningful impact on order reliability and customer experience.

Compensaciones / BeneficiosPermanent contract

Versátil working hours

4 work from home days per week

27 days of vacation per year

Training budget and language classes

Young and dynamic tech environment

ResponsabilidadesDesign, implement and evolve REST APIs and event schemas for contract-first integrations

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

Model and propagate order data across MongoDB, PostgreSQL, and Protobuf

Enable real-time synchronization to corporate systems and analytics with Pub/Sub to BigQuery





Operate and improve a GCP/Kubernetes platform with GitOps (Flux) and CI/CD

Monitor, troubleshoot production, and optimize performance, security, and SLAs

Requisitos principalesExperience with event-driven, distributed systems

Kotlin on JVM; strong Java skills; Python or TypeScript a plus

Contract-first RESTful API design with OpenAPI and API gateway policies (Kong/Apigee)

Relational and NoSQL databases (MongoDB, PostgreSQL); schema design and performance tuning

Cloud-native operations on GCP with Kubernetes and Terraform; GitOps (Flux); observability and production troubleshooting

Integration across enterprise systems using synchronous and asynchronous patterns (Kafka, Google Pub/Sub)

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

Cross-functional collaboration

Clear communication

Problem-solving orientation

Kotlin on JVM

Java

Python or TypeScript (nice to have)

📌 Kotlin Backend Sw Engineer (Barcelona)
🏢 Hays
📍 Barcelona