Role : Senior Java Developer Location : Madrid, Spain Type : Contract/Permanent Work Model : Remote (office attendance 1–2 days per month) Description We are looking for a passionate and experienced Java Developer to join our growing technology team. This is a dynamic role ideal for individuals who thrive in fast-paced environments, are committed to driving change, and are excited about modernizing systems and processes. You will play a key role in delivering change initiatives efficiently and with minimal risk, while also helping shape and support the change management model. Design, develop, and maintain high-performance, scalable Java-based and AWS-based applications. Contribute to application architecture and participate in technical design decisions. Collaborate with cross-functional teams to align technical solutions with business goals. Troubleshoot and resolve issues in production and pre-production environments. Mentor junior developers and support their technical growth. Ensure compliance with security standards and industry regulations. Required Skills & Experience 5+ years of experience in software development, with a strong focus on Java and Spring Boot. Solid understanding of DevOps practices, CI/CD pipelines, Docker, GitHub, and relational databases. Strong Java SE/EE skills including OOP, multithreading, Spring, and Hibernate. Experience with distributed systems and client-server architectures. Proficiency in JavaScript; experience with libraries such as jQuery or AngularJS is a plus. Experience developing RESTful APIs, SOAP services, and implementing API security protocols. Familiarity with IBM API Connect and Strong Loop is advantageous. Strong SQL skills and experience with relational databases. Experience with Agile methodologies and Test-Driven Development (TDD). Knowledge of Jenkins, Nexus, Open Shift, and Micro services Architecture. Working knowledge of GenAI tools. Fluent or advanced English (written and spoken).