Job Summary: Gesnaer is seeking a Full Stack Developer for applications and databases, working on backend with Spring Boot (Java) and mobile frontend with HTML, CSS, JavaScript on Apache Cordova. Key Highlights: 1. Opportunity in aerospace engineering and consulting 2. Highly qualified multidisciplinary team 3. Commitment to young talent and innovation Join Gesnaer and launch your professional career! At Gesnaer, we are a Spanish engineering and consulting firm specializing in the aerospace sector, headquartered in Madrid. We have a highly qualified multidisciplinary team with strong technical and operational expertise, and we firmly commit to nurturing young talent, innovation, and continuous improvement. Furthermore, we are committed to equal opportunities, fostering an inclusive, diverse, and equitable workplace through our Equality Plan. We are looking for a **Full Stack Application and Database Developer profile at Madrid–Barajas Airport.** **Responsibilities:** * Full-Stack profile, working both on backend and mobile frontend. * Modeling and evolution of database schemas (SQL Server / MySQL). * Development of backend microservices using Spring Boot (Java), with REST APIs. * End-to-end troubleshooting. * Working with dynamic JSON. * HTML, CSS, JavaScript on Apache Cordova. * Implementation of offline/online synchronization logic and idempotency. **Requirements:** * Higher Vocational Training Degree in Multiplatform Application Development. * Solid experience in Java + Spring Boot, JAVA-... Employment Type: Full-time, Permanent contract Salary: €22,000.00–€24,000.00 per year Work Location: On-site employment