We are looking for a Java Developer with front-end experience to join the Sopra Steria team for a client in the aerospace sector.You will work in a stable, industrial environment within a multinational team (France, Poland, India) supporting a major aeronautical manufacturer. The program includes a wide portfolio of applications developed by multiple teams. Our scope is to build solutions that support pilots, crew, airlines, and airport operations using modern technologies.Applications are developed mainly in two streams: frontend (JavaScript frameworks like Vaadin, Forms, Joget) and backend (Java/.NET) and deployed to AWS Cloud.      Mission/activities: Develop and maintain Java-based applications with frontend components Collaborate with distributed teams to define requirements and implement software designs Deliver high-quality, clean code aligned with performance and security standards Participate in testing, debugging, and optimization of modules and services Contribute to Agile ceremonies and team collaboration  Tech stack: C# JavaScript (with frontend frameworks like Vaadin, Forms, Swing, Vue.js) AWS: Lambda, CloudFormation, RDS, DynamoDB, SQS CI/CD: GitLab, Jenkins/CloudBees Testing: Cypress Code Quality: SonarQube  Must have requirements: Solid experience in Java development Frontend experience with JavaScript frameworks (e.g. Vaadin, Forms, Swing, Joget) Good understanding of software engineering principles English proficiency at B2 level Willingness to visit our office in Gdańsk and participate in occasional business trips Strong communication skills and proactive attitude Experience with Agile/Scrum and tools like JIRA Nice to have requirements Experience with Joget low-code platform Background in distributed, international teams