Application Support Engineer 

Start Date: 01/07/2026

End Date: 31/12/2026 (with option for extension)

Location: Brussel

Onsite Presence: Required for 2 days per week

Work Regime: 100%

Duty Role Availability: 24/7, 1 in 6 weeks

Service Description:

The client is looking for an Application Support Engineer to join the Data and Application Support team. This team is responsible for deploying all in-house developed applications running in Acceptance & Production, and managing core shared applications and middleware to support those applications, such as Microsoft SQL Server, MongoDB, RabbitMQ, etc. The deployment environments have stringent security constraints, requiring knowledge of authentication, authorization, firewalls, and deep security. With more applications being deployed on Linux servers, the team is expanding its knowledge to both Windows and Linux deployment. Team members are also responsible for the validation and execution of Disaster Recovery Plans (DRP) and are involved in Business Continuity plans. We are looking for a medior-to-senior profile, eager to learn, and able to learn quickly.

Key Responsibilities:

• Assist with day-to-day operational tasks, including deploying and updating all in-house developed applications in acceptance & production environments (mostly Windows IIS & SQL based).
• Assist with application server architecture for deployment of new applications: analyze requirements, assist with design, and setup/deploy applications in acceptance and production environments.
• Contribute to and validate the technical and infrastructure parts of DRP and BCP documents, and be involved in their execution.
• Interface with (mainly IT) clients.
• Second-line troubleshooting of issues.
• Configuration of F5 load balancing VIPs for web applications.
• Support implementations on core applications: RabbitMQ, Redis Cache, and other shared technologies – knowledge of these products is a nice to have.
• Ensure optimal 2nd/3rd level support (interface to Microsoft and other 3rd parties).
• Keep operating and installation documentation for the above areas up to date.
• Be part of the duty role (24/7, 1 in 6 weeks) in this team.

Your Profile:

Technical Skills:

• Proven recent experience in supporting applications on Linux RedHat (deploy an application, verify logs, monitor health and performance of a system, create scripts).
• Proven recent expert experience with Windows Server (2012-2022) (>10 years).
• Proven knowledge of IIS management and website deployments.
• Knowledge of PowerShell.
• Knowledge of MS-SQL, MongoDB, RabbitMQ, NEO4J, or Redis Cache is a plus (on-the-job coaching/training as operator will be provided for missing knowledge).
• Understanding of firewalls and network load balancing concepts (product knowledge will be provided).
• Knowledge of DevOps and CI/CD pipelines.

Non-Technical Skills:

• Team player, but able to work independently.
• Analytical skills for troubleshooting work.
• Pragmatic mindset and customer-minded.
• Must be able and eager to learn new products or technologies (if not all of the above technologies are known, it is expected to learn them within a year maximum).
• Must be natively French or Dutch speaking, able to speak and understand the other language – English mandatory for documents and international meetings, German is a plus.
• For the duty role, you must have a driver’s license and a mobile phone.
• Good level of Dutch and/or French and English is required.

Additional Information:

Must have a driver's license and car (required for the duty role) and mobile phone.