JavaScript - HTML - Kotlin - Porto Salvo, Lisbon Salary: €1700-€2100 per month (depending on experience)Software Engineer (Kotlin / Spring / React)We are seeking a talented Software Engineer to join our growing team and contribute to the ongoing development and enhancement of a modern, scalable platform.About the RoleYou will be working on a solution built with a backend REST Web API and a React-based frontend. The architecture follows a well-structured MVC pattern, ensuring maintainability and scalability. While the frontend stack remains stable, you will play a key role in supporting and evolving the backend services.Key ResponsibilitiesDesign, develop, and maintain backend services using Kotlin and the Spring frameworkWork with Spring MVC to build and enhance RESTful Web APIsCollaborate with frontend developers working in React to ensure seamless integrationContribute to system improvements, performance optimisation, and ongoing maintenanceSupport the evolution of the platform, including the integration of AI-driven featuresTechnical EnvironmentBackend: Kotlin (JVM), Spring, Spring MVCFrontend: React (no changes to current stack)Build Tool: GradleIDE Options: IntelliJ (Community Edition) or VS CodeAdditional Technologies: TypeScript / Node.js (exposure beneficial)RequirementsExperience with Kotlin or a similar language (e.g. Java, C#, JavaScript, or TypeScript)Strong understanding of Spring and dependency injection principlesExperience building RESTful APIs using MVC frameworksFamiliarity with modern development tools and environmentsAbility to work collaboratively in a cross-functional teamDesirableExperience working with React-based frontend applicationsExposure to AI or interest in working on AI-enabled solutionsFamiliarity with Gradle build systemWhy Join Us?You’ll be part of an innovative environment where the platform is evolving into a more advanced, AI-enabled solution. This is an excellent opportunity to work with modern technologies, contribute to meaningful projects, and grow your technical expertise.