Role DescriptionWe are still looking for the very Top Talent…and we would be delighted if you were to join our team!More in details, UST is a multinational company based in North America, certified as a Top Employer and Great Place to Work company with over 35.000 employees all over the world and presence in more than 35 countries. We are leaders on digital technology services, and we provide large-scale technologic solutions to big companies.What we look for?A Backend Developer who has a strong expertise in Java or .NET to design, develop, and maintain backend services in a distributed, service‑oriented architecture.Work LocationHybrid. Madrid city center (Sol area). 3 days a week in the office + 2 days remote.Main Tasks And Accountabilities Will BeDesign, develop, and maintain backend services in a distributed, service‑oriented architecture.Implement and consume RESTful APIs aligned with established architectural standards.Develop backend software using Java (Spring Boot)or.NET Core, depending on the product stack.Implement and maintain unit and integration tests as part of the development lifecycle.Collaborate closely with QA engineers, frontend developers, DevOps, architects, and product stakeholders.Participate actively in refinement, planning, development, and delivery activities.Ensure code quality, maintainability, and consistency across the backend codebase.Support applications running in production, including troubleshooting and analysis of logs, errors, and runtime behaviour.Contribute to continuous improvement of backend development practices, tooling, and technical solutions.What UST expects from you?Proven experience in backend software development within enterprise environments.Strong hands‑on experience with Java and Spring Bootor.NET Core / ASP.NET Core.Solid experience designing and integrating RESTful APIs.Experience working with relational databases and SQL (Oracle, SQL Server, or equivalent).Familiarity with version control systems (Git).Experience with unit and integration testing.Understanding of Agile ways of working (Scrum / Kanban).Basic understanding of CI/CD concepts and DevOps environments.Awareness of production and operational aspects such as logging, error handling, and monitoring.Strong problem‑solving skills and ownership mindset.Comfortable working in complex, regulated enterprise environments.Good communication skills and fluency in English.What can we offer?23 days of Annual Leave plus the 24th and 31st of December as discretionary days!Numerous benefits (Heath Care Plan, Internet Connectivity, Life and Accident Insurances).`Retribución Flexible´ Program: (Meals, Kinder Garden, Transport, online English lessons, Heath Care Plan…)Free access to several training platformsProfessional stability and career plansUST also, compensates referrals from which you could benefit when you refer professionals.The option to pick between 12 or 14 payments along the year.Real Work Life Balance measures (flexibility, WFH or remote work policy, compacted hours during summertime…)UST Club Platform discounts and gym Access discounts.If you would like to know more, do not hesitate to apply and we’ll get in touch to fill you in details. UST is waiting for you!In UST we are committed to equal opportunities in our selection processes and do not discriminate based on race, gender, disability, age, religion, sexual orientation or nationality. We have a special commitment to Disability & Inclusion, so we are interested in hiring people with disability certificate.Skillssoftware development,springboot,asp.net,cicd,