UST is seeking a Senior Java Developer for its Madrid hybrid team. You will design, develop and maintain enterprise-grade Java applications, focusing on system integration, quality assurance and scalable solutions. The role requires deep Java expertise, RESTful integration experience, Kafka and messaging knowledge, and a proactive mindset with ownership. Training on the Actico Platform is provided. Hybrid model in Madrid (3x2). #J-18808-Ljbffr