IT Application Support Officer (m/f)

Description de tâches

Date: 1 Jul 2026

Location: Luxembourg, LU

Company: Deloitte Luxembourg

Job Function: Technology & Cyber Security

Seniority: Senior levels

Contract Type: Open-term

On site

Full time

Your future team

Join our IT Application Support team, operating in a hybrid Windows/Linux environment. We provide application support to internal users across the firm, while actively contributing to IT projects and the implementation of new solutions.

The advantages of joining us

• Career growth, your way - Access top-notch training and career development, with a clear progression path to help you level up at your own pace.
• Innovative work that matters - Tackle cutting-edge projects and utilize the latest tech, with all the tools you need to stay ahead.
• Build your network - Gain access to our global network of professionals and attend industry events to connect and grow your professional circle.
• Participate in firm-wide IT implementation projects beyond day-to-day support.
• Be empowered to propose automation and continuous improvement initiatives.

How you'll contribute to our success

Centralise, analyse and document technical issues; produce and maintain procedures and documentation with a rigorous methodology.

Provide daily assistance to internal users on transversal applications in a hybrid Windows/Linux environment - handling incidents and service requests for applications running on-premises or in the cloud.

Diagnose and resolve application incidents (log analysis, service restarts, configuration files).

Prioritise, escalate incidents and coordinate with other IT teams - in accordance with SLA guidelines.

Participate in projects to implement new solutions for the firm.

Your skills

• Bachelor's degree in Computer Science or a related field (or equivalent experience)
• Minimum 5 years' experience in an operational IT team (support / production / operations).
• Hands-on experience in application support and troubleshooting (logs, services, configuration).
• Experience supporting applications running on premises and in the cloud.
• Experience working with both Windows and Linux environments.
• Good understanding of ITIL processes (Incident Management, Problem Management, Knowledge Management).
• Curious, flexible, and rigorous, with a strong team spirit and comfortable working independently.
• Proactive, able to drive automation and continuous improvement initiatives.
• Strong attention to detail, stress resilient, and excellent analytical and problem-solving skills.
• Excellent analytical skills and problem solving
• Windows Server administration (including IIS 10 administration and hardening, Windows Services and schedule task, event monitoring).
• Linux / RHEL fundamentals (navigation, system services, logs, permissions).
• Basic SQL knowledge for querying and troubleshooting.
• English and French: mandatory (spoken and written).

Nice to have

• Experience with containerisation tools such as Podman and/or Docker.
• Awareness of CI/CD practices and tools (preferably Azure DevOps).
• Basic knowledge of Microsoft Azure Cloud and awareness of AI-related technologies.
• Scripting skills (PowerShell and/or Bash).
• NGINX fundamentals (basic configuration and troubleshooting).
• Understanding of security standards and best practices.