Job Summary: We are seeking a backend developer for API management platforms for a retail-sector client. Key Highlights: 1. Develop your professional career with a personalized career plan. 2. Continuous training in technical, transversal, and language competencies. 3. An inclusive work environment and camaraderie at a Great Place to Work. **Company Description** Why work at Sopra Steria? Because working at Sopra Steria also means feeling **Sopra Steria**. We are a recognized European leader in consulting, digital services, and software development, with nearly 56,000 employees across nearly 30 countries—and over 4,000 in Spain. We focus on people—on their training and professional development—which drives our constant growth and improvement. We are passionate about digital transformation, and like you, we seek the best adventure. We want your everyday experience to become your greatest source of inspiration: learn, contribute, have fun, grow—and above all, enjoy it to the fullest. If you wish to join a “**Great Place to Work**” team, keep reading! **Job Description** What challenge do we propose? We are looking for a backend developer for API management platforms, for a retail-sector client. **Requirements** What are we looking for? At least 2 years of experience with any of the market’s API Managers: WSO2, MuleSoft, APIGEE, Azure, Kong, etc. At least 3 years of experience developing APIs (OAuth2, SAML, OpenID). At least 3 years of Java development experience with Spring (REST services, Swagger, Spring Data, Spring Boot). Repository management and source code control using GIT. Experience working with at least one relational database (Oracle, DB2, SQL Server). Experience developing with Java 5/6. **Additional Information** What do we offer you? * Permanent contract and full-time schedule. * 23 vacation days. * Continuous training: technical, transversal, and language competencies. Access to certifications, training from leading Technology Partners, online learning platforms—and much more! * Life and accident insurance. * Option to enroll in our flexible compensation plan (medical insurance, childcare vouchers, transportation, meal vouchers, and training). * Access to the Privilege Club, offering attractive discounts with top brands. * Personalized and detailed onboarding. We support you every step of the way so you feel \#soprano from day one. * Office featuring dedicated leisure spaces—where work and fun come together! * Camaraderie and a positive atmosphere—we believe strongly in the power of unity. And most importantly…you’ll have the opportunity to develop your professional career with us: together, we’ll create a personalized career plan. You’ll receive training, we’ll set goals, and conduct follow-ups to ensure we achieve them—together. We listen to your priorities and fight for them. Your voice matters here! Join us and be part of something greater! **The world is how we shape it** We commit to respecting diversity by fostering an inclusive work environment and implementing policies that promote inclusion and encourage social and cultural respect regarding gender, age, ability, sexual orientation, and religion—with equal opportunities.