Job Description

Your responsibilities
Are you a talented Computing Engineer with a strong interest in cloud technologies? Join the CERN IT Cloud team to contribute to the evolution of our OpenStack private cloud.
The OpenStack service is undergoing a major upgrade to modernise its infrastructure to offer advanced features to hundreds of users across the organisation. New technologies, such as Software-Defined Networking or Load Balancing as a Service are becoming a core pillar in the evolution of the cloud. Integrating them with the CERN infrastructure and adapting them to CERN's use cases will be key to exploiting their full potential for the scientific community.
In this position, you will:

• Drive integration of new technologies in CERN's private cloud.
• Contribute to the stable operation of service offerings at large scale like virtualisation, networking or load balancing as a service.
• Liaise with various IT teams to design new features and integrations.
• Work closely with the open-source OpenStack community to contribute improvements and bug fixes upstream.
• Support our user community on the adoption of cloud technologies.

If you are passionate about cloud environments, solving real-world problems, and relentless debugging, come and join our team!
Your profile
Skills:

• Essential to have: hands-on experience with Linux systems administration;
• Expected to have: experience developing with Python;
• Nice to have: experience using of CI/CD tools, test automation and deployment;
• Familiarity with virtualisation, configuration and container technologies (Openstack, Puppet, Docker, Kubernetes) is beneficial;
• Knowledge of networking technologies is a plus (e.g. Open VSwitch, OVN or BGP);
• Spoken and written English, with a commitment to learn French.

Eligibility criteria:

• You are a national of a

. * By the application deadline, you have a maximum of two years of professional experience since graduation in Computer Science or a related field (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: 10.07.2025 at 23:59 CEST.
Contract duration: 24 months, with a possible extension up to 36 months maximum.
Working hours: 40 hours per week
Target start date: 01-September-2025
This position involves:

• Stand-by duty, when required by the needs of the Organisation.
• Work during nights, Sundays and official holidays, when required by the needs of the Organisation.

Job reference: IT-CD-CLI-2025-108-GRAE
Field of work: Software Engineering and IT
What we offer

• A monthly stipend ranging between 5196 and 5716 Swiss 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
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.