Full-Stack Software Engineer for CERN's PLM Platform (EN-IM-PLM-2026-127-GRAE)

Join our team as a Full-Stack Software Engineer to enhance digital solutions.

CERN - European Organization for Nuclear Research

Open positions at CERN

Geneva (Switzerland)

Entry

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Overview

Join our team as a Full-Stack Software Engineer to enhance digital solutions.

You have:

Experience in developing and maintaining large software projects using the .NET or Java Enterprise Edition stacks.
Experience with relational databases such as Oracle, PostgreSQL, or SQL Server.
Strong knowledge of Agile and DevOps practices in a collaborative team environment.
Highest educational qualification is either a Bachelor's or Master's degree in Information Technology (or a related field).
Not having held a CERN fellow or graduate contract before.
Applicants without a University degree are not eligible.
Applicants with a PhD are not eligible.

Contract

This is a Entry Level contract. More about Entry Level contracts.

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Details

Company Description

The Engineering Department's Information Management group is seeking a highly motivated full stack software engineer with strong technical skills and a passion for learning. The group is leading a major modernisation effort to simplify a heterogeneous application landscape and enable the Organization's move toward engineering Digital Twins, supporting more than 5000 users.

Job Description

You will join an international team within the PLM (Product Lifecycle Management) section, delivering engineering information management solutions for the entire accelerator complex and its detectors. This includes managing millions of engineering documents, product definitions, and CAD (Computer Aided Design) models.

Your responsibilities

Implement backend applications using Java or .NET.
Build web applications using modern technologies (React/Electron/Typescript).
Integrate 3D model visualisation technologies: web and native viewers, virtual/augmented reality.
Perform code reviews, testing, delivery, and support of the software.
Carry out data analysis and data migrations.
Be part of a project delivering engineering Digital Twins of CERN installations.

More information here.

Your profile

Experience and/or strong knowledge in developing and maintaining large software projects using the .NET or Java Enterprise Edition stacks.
Experience and/or strong knowledge with relational databases such as Oracle, PostgreSQL, or SQL Server as part of large-scale systems.
Experience and/or strong knowledge in Agile and DevOps practices in a collaborative team environment.

Skills

Backend development using Java or .NET.
Frontend development using React or Angular.
Experience with SQL databases (i.e. Oracle, SQL Server).
Git.
CI/CD tools.
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 Information Technology (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: 19.07.2026 at 23:59 CEST.

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

Working hours: 40 hours per week

Job flexibility: Hybrid

Target start date: 01-September-2026

Job reference: EN-IM-PLM-2026-127-GRAE

Field of work: Software Engineering and IT

Benchmark job: 200020 - Computing Engineer

Global Benefits

A monthly stipend between 5266-5793 Swiss Francs per month (tax free) depending on your degree.
30 days of paid leave per year plus 2 weeks annual closure.
Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
Family, child and infant monthly allowances depending on your individual circumstances.
A relocation package (installation grant and travel expenses) depending on your individual circumstances.
Possibility to extend your contract up to 36 months.
On-the-job and formal training including language classes.

Overview of CERN - Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

More information about us, here: careers.cern

Apply now

Potential interview questions

Describe your experience with backend development in Java or .NET. What most challenges have you encountered?	The interviewer wants to assess your technical proficiency and problem-solving abilities related to backend technologies.	Discuss specific projects, challenges faced, and how you resolved them.
How do you approach working in an Agile environment? Can you give an example of a project?	This question aims to evaluate your familiarity with Agile methodologies and your adaptability.	Pro members can see the explanation.
What strategies do you use for integration of 3D visualization technologies?	Pro members can see the explanation.	Pro members can see the explanation.
Can you explain your experience with relational databases? Which technologies have you used?	Pro members can see the explanation.	Pro members can see the explanation.
Describe a situation where you had to collaborate with team members using DevOps practices. What tools did you use?	Pro members can see the explanation.	Pro members can see the explanation.
How do you stay updated with emerging technologies in software engineering?	Pro members can see the explanation.	Pro members can see the explanation.
Discuss your approach to managing code reviews and ensuring quality in software delivery.	Pro members can see the explanation.	Pro members can see the explanation.
Why are you interested in working at CERN and what do you hope to contribute?	Pro members can see the explanation.	Pro members can see the explanation.