Cloud Java Backend Engineer - Real-Time Platform

Overview We are looking for a Senior Java Backend Engineer to join a long-term freelance project in Barcelona (hybrid: 3 days onsite, 2 remote).This role is part of a strategic transformation initiative in the financial sector, modernizing data management systems with cloud-native technologies and agile methodologies.Responsibilities Build and optimize back-end services with Java 8+/**, Spring Boot, and Microservices.Translate complex business needs into scalable solutions.Improve GUI functionality in collaboration with frontend teams.Implement best practices in security, compliance, and governance.Work with Apache Kafka and Apache Spark for real-time data pipelines.Deploy and manage applications in OpenShift and Azure with Kubernetes and Docker.Collaborate in agile cross-functional teams (SCRUM, SAFe).Provide technical leadership and mentor junior developers.7+ years of Java development (Java 8+, ideally **).Strong expertise in Spring Boot, Microservices, REST APIs.Experience with Kubernetes, Docker, CI/CD pipelines.Cloud knowledge (OpenShift, Azure).Familiarity with PostgreSQL, Hibernate, distributed systems.Proficiency in Kafka and Spark for real-time streaming.Awareness of Angular and testing frameworks (JUnit, Jasmine, Karma).Previous work in financial services / trading platforms is a big plus.Seniority level Mid-Senior level Employment type Contract Job function Software Development #J-*****-Ljbffr

7+ years of Java development (Java 8+, ideally **). Strong expertise in Spring Boot, Microservices, REST APIs. Experience with Kubernetes, Docker, CI/CD pipelines. Cloud knowledge (OpenShift, Azure). Familiarity with PostgreSQL, Hibernate, distributed systems. Proficiency in Kafka and Spark for real-time streaming. Awareness of Angular and testing frameworks (JUnit, Jasmine, Karma). Previous work in financial services / trading platforms is a big plus. Seniority level Mid-Senior level Employment type Contract Job function Software Development #J-**-Ljbffr