Software Engineer for Geodetic Metrology Applications

What you'll do

You will contribute to the maintenance and evolution of the existing software infrastructure, with a focus on enhancing C++, Qt, and Python modules that are essential to the daily operations of CERN’s Surveying teams.

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Your responsibilities

Investigate and resolve software issues reported by users, provide timely feedback, and coordinate development activities with the supervisor in accordance with current priorities.
Refactor and update legacy systems to address the challenges of new projects, improving scalability, performance, and robustness while ensuring compatibility with existing workflows.
Develop and deploy Python-based calculation and data visualization scripts on the existing user platform.
Design, develop, and optimize libraries and APIs for seamless integration across different computing platforms within CERN's IT and control systems infrastructure.
Contribute to the consolidation of the AGILE-based development workflow through the use of industry-standard tools such as Jira and Git.
Strengthen the continuous integration and deployment (CI/CD) pipelines implemented in GitLab.

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Your profile

Experience in C++, Python - and possibly Qt- for developing and maintaining complex software modules.
Ability to refactor and modernize legacy code, with attention to performance, scalability, and maintainability.
Interested in debugging and troubleshooting software issues in live environments.
Proactive in providing user support, gathering feedback, and addressing issues in a timely and structured manner.
Comfortable working in an AGILE-based development process, using tools like Jira for task tracking and Git for version control.
Your studies focused on Master in Information Technology.

Your skills

Experience with C++ and Python.
Basic proficiency in HTML and JavaScript for web-related tasks or integrations.
Familiarity with the Qt framework (highly beneficial, especially for GUI development) is a plus.
Familiarity with common Python data science and visualization libraries.
Solid understanding of version control systems, especially Git, and experience with CI/CD workflows.
Ability to write effective unit tests and ensure code quality through testing.
Demonstrating autonomy, initiative, and a rigorous approach to problem-solving.
Capable of managing tasks independently while maintaining high standards.
Good communication skills, both within a development team and when interacting with end users or stakeholders.
Collaborative mindset with the ability to adapt in team-based environments.
Spoken and written English or French, with a commitment to learn the other language

Ideal start date: 01/03/2026

Contract duration: 24 month contract

Job flexibility: Hybrid

Global Benefits at CERN

A monthly stipend between 5196-5716 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.

Let's get you ready

Be sure to meet the eligibility criteria

You are a national of a CERN Member State or Associate Member State.
By the application deadline, you have a maximum of 2 years of professional experience since graduation in the respective field and your highest educational qualification is either a bachelor’s or master’s degree. You must have a university degree and can’t hold a PhD.
You have never had a CERN fellow or graduate contract before.
Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

Your CV (English or French)
Any document you consider relevant to your application
A copy of your most relevant diploma or a certificate of achievement from your school (if you don't yet have your paper diploma)

Your CERNDepartment

The BE department is at the heart of CERN's accelerator complex.

It is responsible for the design, construction, and operation of accelerators and technical infrastructure that provide the cutting-edge scientific instruments needed by the physics community.

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!

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Still have a doubt ? Here are the most frequently asked questions

What should I expect during my first week at CERN?

Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
How big would the team be?

The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
What is the working language at CERN?

The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
What support does CERN provide for relocation?

CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
Do I need a visa to work at CERN?

Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
What would my salary be?

Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.