Java Backend Developer (m/f/d)

WHAT YOU CAN EXPECT

• Design, develop, and maintain robust, scalable backend services that support and enhance our internal and external applications.
• Work in an agile, self‑organized team and collaborate effectively with colleagues.
• Develop new backend functionality using Java and Spring Boot, following modern backend engineering principles and best practices.
• Maintain and improve existing backend services, ensuring performance, reliability, and long‑term maintainability.
• Design, implement, and evolve RESTful APIs and service interfaces to enable seamless integration with frontend applications and other systems.
• Write clean, maintainable, and efficient code in line with team coding standards and industry best practices.
• Contribute actively to planning, refinement, reviews, operations, and continuous improvement activities within the team.
• Collaborate closely with frontend developers to ensure smooth data flows, clear API contracts, and consistent end‑to‑end behavior.
• Implement and maintain unit, integration, and component tests to ensure high quality, stability, and regression prevention.
• Share responsibility for operations and maintenance as part of the team’s DevOps mindset, including monitoring, troubleshooting, and continuous optimization.
• (Nice to have) Show interest in frontend technologies such as Angular and full‑stack development, with opportunities to collaborate across the stack if desired.

WHAT WE NEED FROM YOU

• Bachelor’s Degree in Computer Science, Software Engineering, or similar in the same level or higher.
• Around 3-5 years of professional experience with Java (≥ 21) and building backend applications in production environments
• Strong hands‑on experience with Spring Boot (3.x) and core Spring modules such as Spring Data, Spring Integration, Spring Batch, and Spring Security
• Solid understanding of persistence technologies, including JPA 2 / Hibernate, and designing robust data access layers.
• Experience designing, implementing, and maintaining RESTful APIs for microservice‑based systems.
• Good knowledge of SQL databases, ideally PostgreSQL, including data modeling and query optimization.
• Experience writing unit and integration tests (e.g., JUnit or similar frameworks) to ensure code quality and stability.
• Familiarity with microservice and cloud architectures, including service communication and API‑based integration.
• Experience working with containerization technologies such as Docker; exposure to Kubernetes is a plus.
• Proficiency with JetBrains IntelliJ IDEA or comparable Java IDEs.
• Familiarity with agile methodologies (Scrum or Kanban) and working in agile development teams.
• Strong communication skills in Spanish and English, both verbal and written.

WHAT WE OFFER

• Continuous training and professional development with our internal vacancies.
• Safe environment where we promote your health.
• Competitive economic offer with a base salary plus a variable for good performance.
• Hybrid model* of work and adapt your schedule according to your circumstances.
• Connect outside the office and practice sports with colleagues through company groups.
• Flexible remuneration that you can voluntarily allocate to transportation services, training, childcare, etc.
• Pension plans, life and accident insurance, personal loans and participation in company stock programs.
• Financial aid for schooling and other measures for families.

*It is required to attend our offices in Madrid 2 times per week.