Job Summary: We are looking for a Senior Backend Developer to develop the backend of an innovative platform, ensuring scalability, security, and performance, while participating in design and maintenance. Key Highlights: 1. Strategic role with direct impact on group growth 2. Dynamic environment with real capacity to build and define 3. Professional development and growth opportunities **Description:** ---------------- We are seeking a **Senior Backend Developer** to participate in developing the backend of an innovative platform we are building as a product, comprising multiple web applications. The role includes ensuring scalability, security, and performance while meeting defined technical and functional requirements. You will be involved in both designing and developing new applications, as well as preventive, evolutionary, and incident-resolution maintenance. **Responsibilities:** * Develop and maintain the platform and web application backends. * Implement APIs and services for integration with other components. * Ensure security, scalability, and performance optimization in distributed environments. * Collaborate with frontend, product, and QA teams to ensure high-quality deliveries. * Participate in the design and development of new features. * Perform preventive, evolutionary, and corrective maintenance. * The work includes ensuring scalability, security, and performance while meeting defined technical and functional requirements. * You will participate in both the design and development of new applications and in preventive, evolutionary, and incident-resolution maintenance. **What We Offer:** * Strategic role with direct impact on group growth. * Dynamic environment with real capacity to build and define. * Professional development and growth opportunities within the organization. * Enjoy the best of both worlds with a 3x2 office schedule to connect with your team and 2 remote workdays — intensive working hours for maximum focus. * Inspiring location: offices in the upper area of Barcelona, offering panoramic views and a nature-surrounded environment designed to foster innovation and wellbeing. * Holistic Wellbeing: free access to a comprehensive nutrition plan, physiotherapy, and coaching. Your physical and mental health is our priority. * Rest and other benefits: enjoy 23 working days of vacation per year. **Requirements:** --------------- * 3 years of solid backend development experience. * Proficiency in languages such as Python, .NET, Java, or similar. * Experience in designing and implementing REST APIs. * Knowledge of relational and non-relational databases (SQL, MongoDB, etc.). * Familiarity with containers and orchestration (Docker, Kubernetes). * Experience with CI/CD environments and version control (Git). * Knowledge of microservices architectures, modules, and SOA architecture. * Experience with Microsoft Azure cloud (desirable). * Ability to work collaboratively and communicate effectively. * Proactivity and results orientation. * Interest in innovative environments and evolving products.