• The Java Full Stack Developer is responsible for designing, developing, and maintaining scalable, secure, and high-performing web applications across backend and frontend systems within a SaaS environment. • This role delivers end-to-end development, including architecture, API integration, database design, and performance optimisation, while collaborating with cross-functional teams to build reliable, maintainable solutions that support platform growth. • Design, develop, and maintain scalable backend and application components. • Participate in the full software development lifecycle, including requirements gathering, solution design, development, testing, deployment, and support. • Develop and maintain applications using Java, Spring Boot, Spring MVC, Spring Security, Hibernate, and JPA. • Support frontend integration and development tasks using HTML5, CSS3, JavaScript, and modern UI technologies where required. • Design and maintain relational database schemas, write optimised SQL queries, and support data integrity, performance, and reporting requirements. • Contribute to secure authentication and authorisation flows using technologies and standards such as OAuth2 and JWT. • Work closely with QA, DevOps, product, and design teams to support quality delivery outcomes.

• Contributors will design and implement multi-file coding tasks across bug fixing, feature development, refactoring, and testing • Write clear natural-language specifications and reference implementations • Develop and extend unit and integration test suites • Review peer-generated tasks for correctness, clarity, and realism • Identify edge cases, ambiguities, and potential failure modes • Ensure alignment between specifications, code, and expected outputs

• Promote the development of improvements to products; • Design integration scenarios between products and third-party systems; • Document processes and activities related to product operation and sustainment; • Specify, evaluate and develop programs, scripts and system/server configurations for Internet servers hosted in cloud computing environments and databases; • Test and install programs, scripts and system configurations; • Deploy, configure and develop scripts for version control tools (SVN/GIT), continuous build and delivery (JENKINS), and systems administration; • Write requirements documents and develop acceptance tests;

• Diseñar y mantener aplicaciones web escalables integrando componentes de frontend y backend con altos estándares de calidad. • Desarrollar interfaces de usuario modernas, responsivas y altamente eficientes utilizando React y TypeScript. • Optimizar consultas SQL complejas para asegurar un acceso rápido y seguro a bases de datos relacionales. • Implementar y gestionar servicios RESTful para garantizar una comunicación fluida entre sistemas y microservicios. • Colaborar con equipos multidisciplinarios en la definición y lanzamiento de nuevas funcionalidades bajo metodologías ágiles. • Diagnosticar y resolver incidencias técnicas en software existente, priorizando la estabilidad y el rendimiento. • Investigar y aplicar nuevas tecnologías para fomentar la mejora continua en el ciclo de vida del desarrollo.