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This hybrid position in Valencia offers the chance to grow your leadership skills, own key system domains, and mentor peers within a collaborative, high-impact team.\n} } ; \n{ your_responsibilities: [\nDeliver complex backend features end-to-end with minimal supervision, ensuring high quality and timely completion.\nMentor and support other developers through code reviews, pairing, and knowledge sharing to boost team capability.\nTake ownership of core functions or domain areas within the team and expand influence across multiple teams.\nLead efforts to improve team processes, including code quality, testing, and documentation standards.\nCollaborate closely with Product Owners, QA, DevOps, and fellow engineers to deliver reliable, scalable solutions.\nServe as a technical expert and informal leader, fostering continuous improvement and technical excellence.\n] } ;\n{ following_qualifications_would_be_in_line_with_our_desired_profile_for_this_position: [\nStrong proficiency in the Java/JVM ecosystem.\nExperience building backend applications with Spring Boot.\nClear motivation to learn and adopt Kotlin as a primary language, with motivation to grow into it quickly.\nProven ability to design and implement complex backend solutions simply and effectively.\nSolid understanding of performance, security, and maintainability best practices.\nExperience across full software development lifecycle and CI/CD workflows.\nExcellent communication skills and a collaborative mindset.\nDemonstrated willingness to mentor and support team members.\nCuriosity and commitment to continuous learning and pragmatic problem-solving.\nFamiliarity with Postgres, Kafka, REST APIs, Reactive Programming (Reactor), and monitoring tools like Grafana and Prometheus is a plus\n] } ;\nGot the feeling not to match every single requirement? 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