L3 COTS Application Engineer (Windows, Linux and Identity Integration) for NATO with security clearance

WLG; Eigenbrakel; Hybride; EUR 60 000 - 90 000; Plein temps

Résumé du poste

WLG in Belgium (Braine-l'Alleud) seeks an experienced 3rd-line application support engineer. The role covers Windows/Linux servers, Atlassian administration, cloud configuration (Azure/AWS), and AI tooling integration in production.

You will deploy, monitor, and support client apps on workstations, while ensuring service levels and robust documentation. 50% on-site, end of December 2026 focus.

Qualifications

• Real third-line application support experience on Windows and Linux.
• Atlassian administration and configuration in an enterprise setting.
• Cloud configuration in Azure and AWS with identity integration.
• Ability to work to service levels in a support organisation with good documentation habits.
• Interest in AI integration as part of the role's evolution.

Responsabilités

• Deploy and manage server applications on Windows and Linux, and integrate with identity providers.
• Support creation and deployment of client applications on end-user workstations.
• Manage and configure the Atlassian product set.
• Maintain operational and support environments and monitor performance.
• Gather KPIs and support in-service operation of systems.

Connaissances

Third-line support

Atlassian administration

Cloud configuration

Azure

AWS

AI integration

Monitoring

KPIs reporting

Windows & Linux

End-user support

Outils

Atlassian Suite

Azure

AWS

Windows

Linux

Monitoring tools

Description du poste

This is the escalation point. When a commercial application that thousands of people depend on stops behaving, it reaches this desk — and it is also this desk that decides how the next one gets deployed, integrated and monitored so it does not.

Three positions are open on the same requirement, based at Braine-l'Alleud with half the week on site. The work spans classic third-line application engineering, cloud configuration, and a growing strand of AI tooling going into production.

What You Would Be Doing

• Deploy and manage server applications on Windows and Linux, and integrate them with identity providers.
• Support the creation and deployment of client applications on end-user workstations.
• Manage and configure the Atlassian product set.
• Keep the operational and support environments maintained, and monitor application performance.
• Gather and report metrics and KPIs, and support in-service operation of the systems.
• Configure cloud components across Azure and AWS, including identity groups and roles.
• Deploy, configure and support AI-based solutions, tools and agents, and their integration with the commercial applications in production — then keep them monitored and maintained.
• Provide second- and third-line support for end-user queries to the agreed service levels, troubleshooting software issues with minimal disruption.
• Support the local CIS support units and other support staff in daily operations.

What we are looking for

• Real third-line application support experience on both Windows and Linux servers.
• Atlassian administration and configuration in an enterprise setting.
• Cloud configuration in Azure and AWS, and identity integration.
• Working to service levels in a support organisation, and the documentation habits that go with it.
• An appetite for the AI-integration strand — this part of the role is being built now.

Based at Braine-l'Alleud, Belgium, 50% on site, running to the end of December 2026.