> Markdown version of [/jobs/ext/2982805-backend-java-developer](https://www.wearedevelopers.com/jobs/ext/2982805-backend-java-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Java Developer - **Company:** House Of Aby - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Code Review, Distributed Systems, Software Architecture, Software Engineering, Software Systems, Spring-boot, Backend, Restful APIs - **Published:** September 18, 2026 - **Apply:** https://www.buscojobs.com.es/backend-java-developer-en-madrid-ID-372242744 ## About the Role 3+ years of experience in Java development . Strong knowledge of Java and Spring Boot . Experience developing REST APIs and backend applications. Understanding of software architecture principles and distributed systems. Ability to work autonomously while collaborating with senior technical stakeholders. Experience working in Agile environments. Strong problem-solving and analytical skills. Good communication skills and willingness to participate in technical discussions. English professional level (mandatory). ## Description We are looking for aMid-Level Java Developerto join an innovative project focused onIntent-Based Networking (IBN)for industrial telecommunications.You will work closely with the Software Architect, contributing to the design, development, and evolution of a next-generation networking platform operating in convergedOT/IT environments .This is an excellent opportunity to join an international R&D environment and be involved in the development of cutting-edge technology solutions.Your day-to-dayDevelop and maintain backend services and applications usingJava .Collaborate closely with the Software Architect in implementing architectural decisions and technical solutions.Participate in the design and evolution of a scalable and robust networking platform.Translate functional and technical requirements into high-quality software solutions.Contribute to software design discussions and technical problem-solving activities.Develop clean, maintainable, and well-documented code following best practices.Participate in code reviews and contribute to continuous improvement initiatives.Work within agile and multidisciplinary teams in an international environment.Support the integration of networking and industrial communication functionalities.What does our recruitment process look like?Initial conversation with the Talent Acquisition team.Technical interview focused on Java development experience.Technical discussion with the Architect and Engineering team.Final offer and onboarding.What are we looking for?3+ years of experience inJava development .Strong knowledge ofJava and Spring Boot .Experience developing REST APIs and backend applications.Understanding of software architecture principles and distributed systems.Ability to work autonomously while collaborating with senior technical stakeholders.Experience working in Agile environments.Strong problem-solving and analytical skills.Good communication skills and willingness to participate in technical discussions.English professional level (mandatory).What do we offer?Permanent contract with Abylsen.Hybrid work model within Madrid or Barcelona.Flexible working hours.Private health insurance.Access to training and certification platforms.Professional growth within innovative international R&D projects.Collaborative, multicultural, and technology-driven environment.HOUSE OF ABY :a unique playground for our talents!The HOUSE OF ABY Group brings together 10 complementary brands within a single ecosystem, covering a variety of sectors such as aeronautics, digital, nuclear, pharmaceuticals and railways.This diversity makes HOUSE OF ABY a true professional playground, offering our consultants and Business Partners the opportunity to evolve in environments, professions and projects with multiple challenges.Thanks to this multi-brand organisation, everyone can build a tailor-made career path, develop their expertise, explore new areas and work on high value-added projects, while benefiting from the strength and synergies of a structured Group.Joining HOUSE OF ABY means becoming part of a dynamic Group that trusts its teams and gives them the means to perform, grow and succeed.ABYLSEN is an engineering consulting company that supports its clients in delivering technological projects through expert consultants.Its mission: to bring expertise, innovation and execution capability.For over 20 years, Abylsen has established itself as a major engineering consulting player in Europe.It supports more than 660 clients in their industrial, digital and operational projects.Area of expertiseR&D Production & operations Digital & IT Industrialisation Validation & testing Maintenance & safety SectorsEnergy Aerospace, Space & Defence Automotive Life Sciences Construction & Infrastructure Heavy Industry IT & Telecommunications Banking, Finance & Insurance Equal opportunitiesNo barrier should hold back talent!Dedicated to equal opportunities, our Group embraces an inclusive approach: every position is open to all, and we actively support the integration of people with disabilities.#J-*****-Ljbffr ## Related Videos - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [Are Code Reviews Worth It? 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