Location: Remote (Madrid-based) Language: English (Professional Working Proficiency) At Hays, we are partnering with a leading international company seeking a highly skilled Senior Backend Consultant to join a strategic project. This role is adecuado for professionals with strong expertise in backend development, event-driven architectures, cloud technologies, and data integration. Key Responsibilities Design, develop, and maintain scalable backend applications and services. Build and optimize real-time data processing solutions using Kafka Streams and DMS Streaming . Develop high-quality microservices using Java Spring Boot . Integrate applications and third-party systems through APIs. Collaborate with cross-functional teams in an agile environment. Contribute to cloud-native solutions hosted on AWS . Support data analytics and reporting initiatives involving Databricks and Power BI . Ensure best practices in version control, containerization, and deployment processes. Mandatory Requirements Candidates must meet all the following requirements and have proven hands-on experience:



Strong experience with DMS Streaming and Kafka Streams . Solid development experience with Java Spring Boot . Experience integrating and consuming APIs . Experience working with AWS cloud environments . Knowledge of Databricks and Power BI . Experience with Git Hub and Docker . Kafka Certification (mandatory). Professional level of English . Nice to Have Experience with scheduling and workload automation tools, particularly Control-M . What We Offer 100% remote working model . Opportunity to work on a high-impact international project. Collaborative and innovative environment. Exposure to cutting-edge technologies and modern cloud architectures. Long-term professional growth opportunities. If you have a strong background in backend development, event streaming technologies, and cloud environments, and you hold a Kafka certification, we would love to hear from you. Apply now and become part of a dynamic team delivering innovative solutions within the Trade Nxt ecosystem.

📌 Senior backend consultant | remote (madrid)
🏢 Hays
📍 Madrid