Junior Full-Stack Software Engineer (FAP-BC-ENG-2025-132-GRAE)

Job Description

Your responsibilities

Are you a motivated Software Engineer with a passion for delivering complex and compelling information systems end-to-end? Are you at ease with server-side technologies, and also with writing frontends in TypeScript and not afraid to optimise database queries, dive into data integration processes or configure and debug messaging/eventing systems? Do you enjoy working in an agile environment and a self-organized team? Then join our team of talented engineers and contribute to application software for CERN's Corporate Information Systems. CERN, take part!

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.

As a Full-Stack Software Engineer in the Business Computing group, you will be part of a self-organised agile team responsible for the design, implementation, configuration and support of software solutions used across all of CERN.

Your role will focus on developing and maintaining CERN's internal platforms for document and record management, digital workflows, and role-based access control. These systems are essential to the Organization's daily operations, supporting document routing, access provisioning, and personal data handling. You will contribute to both legacy system evolution and the creation of new solutions using modern technologies.

Your day-to-day job will involve:

• Implementing and testing the solutions the team develops.
• Providing support for the final users.
• Participating in knowledge sharing activities.
• Supporting the continuous improvement of the team's processes and dynamics in order to meet the objectives and service level agreements agreed upon together with the Product Manager.

Your profile

Skills:

Required:

• Experience building modern web applications with React and TypeScript.
• Understanding of front-end architecture, component design, and state management (e.g. Redux, Zustand, or similar).
• Hands-on experience in the design and development (incl. build/test/deployment) of enterprise solutions using Java and Spring, with an understanding of RESTful API design principles.
• Familiarity with modern software design and architecture patterns.
• Proficient with Git or equivalent version control systems.
• Comfortable working with SQL databases and integrating data into Java applications.

Nice to have:

• Experience with CI/CD pipelines using GitLab or equivalent.
• Familiarity with container technologies such as Docker or Kubernetes.
• Understanding of GitOps workflows or infrastructure as code concepts.
• Willingness and ability to contribute to feature development in legacy applications.
• Knowledge of PL/SQL.
• Spoken and written English, with a commitment to learn French.

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State.
• By the application deadline, you have a maximum of two years of professional experience since graduation in Computer Science / Computer Engineering (or a related field) and your highest educational qualification is either a Bachelor's or Master's degree.
• You have never had a CERN fellow or graduate contract before.
• Applicants without University degree are not eligible.
• Applicants with a PhD are not eligible.

Additional Information

Job closing date: 31.08.2025 at 23:59 CEST.

Contract duration: 24 months, with a possible extension up to 36 months maximum.

Target start date: 01-March-2026

This position involves:

• Work during nights, Sundays and official holidays, when required by the needs of the Organization.

Job reference: FAP-BC-ENG-2025-132-GRAE

Field of work: Software Engineering and IT

What we offer

• A monthly stipend ranging between 5196and 5716Swiss Francs(net of tax).
• Coverage by CERN's comprehensive health scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Depending on your individual circumstances: installation grant; family, child and infant allowances; payment of travel expenses at the beginning and end of contract.
• 30 days of paid leave per year.
• On-the-job and formal training at CERN as well as in-house language courses for English and/or French.

About us

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Find out more on http://home.cern.

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success.