Back End Developer

We are 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 Location

Hybrid. Madrid city center (Sol area). 3 days a week in the office + 2 days remote.

Main tasks and accountabilities will be:

• Design, 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.

If you would like to know more, don’t hesitate to apply and we’ll get in touch to fill you in detail.

We are waiting for you!