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 contractFlexible working hours4 work from home days per week27 days of vacation per yearTraining budget and language classesYoung and dynamic tech environment ResponsabilidadesDesign, implement and evolve REST APIs and event schemas for contract-first integrationsDevelop and orchestrate event-driven order workflows using Kafka/Kafka Streams and TemporalModel and propagate order data across Mongo DB, Postgre SQL,



and ProtobufEnable real-time synchronization to corporate systems and analytics with Pub/Sub to Big QueryOperate and improve a GCP/Kubernetes platform with Git Ops (Flux) and CI/CDMonitor, troubleshoot production, and optimize performance, security, and SLAs Requisitos principalesExperience with event-driven, distributed systemsKotlin on JVM;

strong Java skills; Python or Type Script a plusContract-first RESTful API design with Open API and API gateway policies (Kong/Apigee)Relational and No SQL databases (Mongo DB, Postgre SQL);

schema design and performance tuningCloud-native operations on GCP with Kubernetes and Terraform;

Git Ops (Flux); observability and production troubleshootingIntegration across enterprise systems using synchronous and asynchronous patterns (Kafka, Google Pub/Sub)Focus on reliability, security, and GDPR/PII compliance;

strong cross-functionalcollaboration Cross-functional collaborationClear communicationProblem-solving orientationKotlin on JVMJavaPython or Type Script (nice to have)

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