Your responsibilities

The selected candidate will join the Database on Demand service team supporting several types of rapidly provisioned databases for use by various CERN communities including WLCG, Experiments or Accelerator systems.

Your main functions will include:

• Administer MySQL, PostgreSQL, InfluxDB or other open-source time series database like TimescaleDB, through multiple product lifecycle environments, from development to mission-critical production systems.
• Maintain and support the current solution for providing MySQL high availability, already in use by several critical services at CERN.
• Configure and support database platforms: architecture, evolution, migration, upgrades and patches, including monitoring of system health and performance to ensure high levels of performance, availability, and security.
• Assist and advise end users, as well as support with database design.

Your profile

Skills:

• MySQL, PostgreSQL, InfluxDB or TimescaleDB databases.
• Large-scale & HA DB environments.
• SQL, shell script, Python.
• Linux OS, health & performance.
• Service administration, Puppet configuration, Git.
• 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 (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: 14.09.2025 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-October-2025

Job reference: IT-DA-DB-2025-122-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 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.