The Chamber of Employees is recruiting an

IT Specialist – Infrastructure, Systems and Networks

Contract type: Permanent full-time contract
Work location: Luxembourg Bonnevoie
Start date: to be agreed

Your main role

As part of an IT team comprising four staff members and one apprentice, you will contribute to the operation, maintenance and development of the CSL’s IT infrastructure. The role focuses primarily on the administration of servers, networks, firewalls, virtualisation platforms and security systems. It also includes second-level support and technical coordination with external service providers.

The environment spans four sites: three sites accommodating users and one data centre. You will work independently while collaborating closely with the IT team.

Your responsibilities

  • Install, configure, maintain, patch and monitor Windows and Linux servers
  • Administer Active Directory, Group Policy, DNS, DHCP, certificate services, identities and access permissions
  • Administer virtualisation platforms, compute, storage and replication mechanisms
  • Operate switches, routing, VLANs, Wi-Fi, VPNs, inter-site links and data-centre connectivity
  • Configure and maintain firewalls, filtering rules, network segmentation and secure access
  • Manage backups, test restores and contribute to business-continuity and disaster-recovery arrangements
  • Perform patching, system hardening, vulnerability management and security follow-up
  • Analyse alerts and logs, participate in incident response and maintain monitoring tools
  • Handle Level 2 incidents and service requests in cooperation with users and the IT team
  • Carry out installation, hardware replacement, cabling and maintenance across all four sites and in the data centre
  • Coordinate suppliers and service providers; for telephony operated by DEEP, manage technical follow-up and internal network components
  • Maintain inventories, diagrams, technical procedures, operations documentation and recovery plans
  • Contribute to infrastructure improvement, renewal and security projects

Your profile

  • At least eight years of professional experience, ideally in infrastructure, systems and network administration
  • A higher education qualification in IT or equivalent professional experience
  • Strong experience with Windows Server, Active Directory and Linux
  • Proficiency in enterprise networking, switching, routing, VLANs, Wi-Fi, VPNs and firewalls
  • Knowledge of virtualisation, storage, backups, replication and disaster recovery
  • Familiarity with cybersecurity, system hardening, vulnerability management and log analysis
  • Ability to diagnose complex incidents and produce clear technical documentation
  • A valid driving licence and the ability to travel between sites
  • Occasional availability to carry out work outside normal working hours
  • Professional proficiency in English is essential, particularly for documentation and technical communication
  • Good professional proficiency in French, the main language used in day-to-day work
  • Knowledge of Luxembourgish and/or German would be an asset

Your personal qualities

  • Autonomy, reliability and a strong sense of responsibility
  • A methodical approach and respect for change and security procedures
  • Analytical thinking, prioritisation skills and a problem-solving mindset
  • Team spirit, knowledge sharing and cooperation with the apprentice, users and service providers
  • Clear communication, a service-oriented attitude and discretion

Additional assets

  • Experience with Nutanix AHV/Prism or a comparable platform
  • Knowledge of Microsoft 365, Entra ID, hybrid environments and Azure administration
  • Proficiency in PowerShell, Bash or infrastructure-automation tools
  • Development skills, particularly C#/.NET, Go, SQL or REST APIs; software development is not a primary responsibility
  • Experience with Git, Azure DevOps, Infrastructure as Code or automation pipelines
  • Knowledge of monitoring, SIEM, vulnerability-management and inventory tools

What we offer

  • A stimulating working environment serving the collective interests of employees in Luxembourg
  • A varied role
  • The opportunity to work within a dynamic and committed team at a continually evolving institution
  • Attractive employment terms in line with those in the public sector

About the CSL

The Chambre des salariés (Chamber of Employees) is the largest professional chamber in Luxembourg. It actively participates in the legislative process by issuing opinions on all legislation affecting employees. A trusted ally, it represents more than 650,000 employees, jobseekers, apprentices and pensioners, whether residents or cross-border workers, and ensures that every voice is heard.

Its mission is structured around three main areas:

  • Defending the rights of its members on key issues such as working conditions, social security, purchasing power and housing.
  • Providing information and support by sharing practical information on pensions, taxes, leave, contracts and other topics, as well as useful templates, such as resignation letters and employment contracts. It also organises conferences, workshops and information sessions that are free and open to the public.
  • Providing training to support professional development through its two training centres: the Luxembourg Lifelong Learning Centre (LLLC) and the Centre de formation et de séminaires (CEFOS).

Do you have the profile we are looking for, and are you interested in the position? Please submit your application, including a cover letter, CV, portfolio and copies of your diplomas and certificates, to the CSL management by 6 November 2026, either by post or by email:

Chambre des salariés
B.P. 1263 L-1012 Luxembourg
jobs@csl.lu
T +352 27 494 226