Senior Java Backend Engineer – Freelance (Barcelona, Hybrid)

Overview
Por favor, presente su candidatura sin demora si su perfil encaja bien con este puesto, debido al alto nivel de interés.
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+/11/21, 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 (SC...