Software Engineer (IT-CA-CET-2026-210-LD)

Description

You will join the Collaboration and Engineering Tools team in the IT Department, which runs the email, group management and media services that scientists, engineers and support staff use every day.

The role combines software engineering, service operations and infrastructure automation to keep these services secure, scalable and reliable.

You will work with cloud services, web and automation frameworks, data analytics platforms, Kubernetes/OpenShift, Microsoft 365 and Exchange Online.

The post offers room for technical leadership, architecture input and service ownership in an international setting.

The company uses some of the largest and most complex scientific instruments to study the basic constituents of matter, with particles colliding at close to the speed of light.

Responsibilities

• Act as deputy service manager for the email services and share technical ownership of their reliability and evolution.
• Manage and improve how email identities and attributes sync across Active Directory, Entra ID and Exchange Online.
• Run and develop the distribution groups archive service.
• Run and develop the integration that provisions 365 groups through the internal computing resources portal.
• Keep group memberships and related collaboration services synchronised across the computing environment.
• Take part in strategic projects on media platforms, video conferencing and Indico, the event management platform.
• Troubleshoot and continuously improve communication and collaboration services.
• Work with infrastructure, security and IT service teams to deliver robust, scalable solutions.
• Automate processes and improve observability, reliability and user experience.

Requirements

• Hold a Master's degree or equivalent relevant experience in computer science or a related field.
• Have experience, or a strong wish to build it, in some of the areas below.
• Have software or web application development experience, ideally with some of c,.Net, Python, JavaScript, Flask, React.js or PostgreSQL.
• Know modern DevOps and infrastructure platforms such as Kubernetes/OpenShift, Puppet or OpenStack.
• Have designed, deployed or run reliable production services.
• Have dealt with scalability, security and reliability problems in service configuration and delivery.
• Be interested in large-scale collaboration and communication systems used by thousands of people.
• Have worked with databases or data analytics tools, especially SQL and the ELK stack.
• Advantageous: experience running large-scale email and groupware platforms.
• Advantageous: experience with Microsoft 365, Exchange Online and identity management technologies.
• Advantageous: knowledge of email architectures and protocols (SMTP, IMAP, POP, routing, connectors, mailing lists and mailbox services).
• Advantageous: experience automating cloud and hybrid environments.
• Candidates with diverse technical backgrounds and international experience are welcome, including those who lack some listed technologies but have strong engineering foundations, curiosity and a collaborative mindset.
• Program in languages such as PowerShell, Graph API, Python and C for development, scripting, service management and automation.
• Develop application software.
• Reuse, refactor, integrate and port existing software.
• Administer computing systems and use system configuration tools.
• Apply best practices for ICT security standards and policies.
• Identify, define and assess problems, then take action to resolve them.
• Deliver high-quality work on time that meets expectations.
• Build constructive, effective working relationships with colleagues.
• Take initiative beyond regular tasks and make things happen.
• Stay open to new ideas and new situations.
• Speak and write English, and commit to learning French.

Conditions

Limited duration contract of 5 years; holders may apply for an indefinite position subject to certain conditions.

40 hours per week, hybrid working.

Night, Sunday and official holiday work when the organisation's needs require it.

Stand-by duty when the organisation's needs require it.

Job grade 6-7, job reference IT-CA-CET-2026-210-LD, field of work Information Technologies, benchmark job title Computing Engineer.

Filled as soon as possible; applications should normally reach the organisation by 11.11.2026 at 23:59 CET.

Diversity is central to the organisation, and applications from all Member States and Associate Member States are welcome.

Benefits

• Tax-free salary that increases with your years of relevant experience.
• 30 days of paid leave per year plus a 2 week annual closure.
• Health insurance covering you, your spouse and children, plus membership of the pension fund.
• Monthly family, child and infant allowances depending on your circumstances.
• Relocation package covering installation grant, removal and travel expenses, depending on your circumstances.
• Possibility to extend the contract up to 8 years, plus eligibility for indefinite contract tenure.