Third-Line Application Support Engineer with Atlassian, Azure, and AWS expertise is needed to support NATO operations with security clearance. You will deploy, manage, and support Windows and Linux server applications, integrate with identity providers, and administer Atlassian products across the estate. This role also covers cloud components on Azure and AWS, deployment of AI-based solutions and agents, and ongoing incident management. Responsibilities include providing second- and third-line support for end-user inquiries, monitoring application performance, maintaining operational and support environments, and escalating to vendor support when appropriate. You will build and maintain knowledge bases, contribute to requirements analysis and change requests, and support security approvals and accreditation, ensuring regulatory compliance. The role is hybrid with half of the working days on site in Braine-l'Alleud, Belgium.

Required qualifications include: deep knowledge of Microsoft SQL Server and IIS-based web applications; strong cloud deployment experience on AWS and Azure; PKI and networking fundamentals; broad software engineering skills including HTML5, REST/web services, XML, HTTP, and SQL, with identity integration via OAuth, OIDC, or SAML2; experience with IIS, JBoss or Apache Tomcat, and .NET applications; extensive experience deploying and integrating client-server applications; strong troubleshooting and a customer-service orientation; fluent English (French a plus).

Third-Line Application Support Engineer with Atlassian, Azure, and AWS expertise is needed to support NATO operations with security clearance. You will deploy, manage, and support Windows and Linux server applications, integrate with identity providers, and administer Atlassian products across the estate. This role also covers cloud components on Azure and AWS, deployment of AI-based solutions and agents, and ongoing incident management. Responsibilities include providing second- and third-line support for end-user inquiries, monitoring application performance, maintaining operational and support environments, and escalating to vendor support when appropriate. You will build and maintain knowledge bases, contribute to requirements analysis and change requests, and support security approvals and accreditation, ensuring regulatory compliance. The role is hybrid with half of the working days on site in Braine-l'Alleud, Belgium.

Required qualifications include: deep knowledge of Microsoft SQL Server and IIS-based web applications; strong cloud deployment experience on AWS and Azure; PKI and networking fundamentals; broad software engineering skills including HTML5, REST/web services, XML, HTTP, and SQL, with identity integration via OAuth, OIDC, or SAML2; experience with IIS, JBoss or Apache Tomcat, and .NET applications; extensive experience deploying and integrating client-server applications; strong troubleshooting and a customer-service orientation; fluent English (French a plus).