Junior Full-Stack Software Engineer (FAP-BC-DL-2026-143-GRAE)

Design and develop full-stack enterprise applications. Implement and test software solutions. Develop frontend and backend features. Optimise SQL queries and database integrations. Configure and debug integration/messaging systems. Provide user and production support. Work in an agile self-organised team. Contribute to continuous process improvement. Participate in knowledge sharing activities. Maintain and enhance legacy applications. Use CI/CD and containerised development workflows. Collaborate with Product Managers and stakeholders.

You will join the Business Computing (BC) group in the Finance and Administrative Processes (FAP) department, where 80+ talented international colleagues are responsible for delivering information systems for all of CERN's business functions. The product management-driven Business Computing Group is working for clients across the whole organisation (HR, Finance, Planning, Safety, Security, Purchasing, Logistics, and Accelerator Operations). The type of products under the group's responsibility range from custom-made solutions for a few users to large and widely integrated systems with 15,000+ users. Hence, working for the BC group provides numerous perspectives for being in touch with different technologies and business areas.

• Experience developing full-stack enterprise applications using Java, Spring Boot, and JavaScript frontend frameworks (e.g. React).

• Experience with build, test, and deployment toolchains.

• Experience working with SQL and relational databases and Java database integration.

• Experience working in agile development teams.

• Experience with modern development workflows including Git, CI/CD (e.g. GitLab), containerisation, and GitOps.

• Experience maintaining and implementing features in legacy applications.

• Full-stack development with Java, Spring Boot, JavaScript, React, and similar frameworks.

• Understanding of modern software design and architecture principles and patterns, and their application in the Java and JavaScript ecosystems.

• Knowledge of Git or equivalent VCS.