L3 Support Engineer for COTS Applications

UNTIL 07 September, 2026

Job Details

On-Prem/Remote: 50% On-Premisses

Minimum Profile Required

Skill, Knowledge & Experience:

• Deep understanding of end-user devices (desktops, laptops, tablets, smartphones) running Windows OS, Android OS and Apple iPhones/iPads.
• Expert knowledge of Linux server infrastructure, Windows server infrastructure and Active Directory.
• Expert knowledge of Microsoft SQL Server 2019-2025 and IIS based web applications.
• Very good understanding and experience with AI/LLM: LLMs knowledge (cloud and on premises based);. Agentic systems development; AI/LLM integration; MLOps and AI Lifecycle Management
• Deep understanding of networking infrastructure.
• Very good knowledge of cloud technologies and cloud deployment for both AWS and Azure.
• Deep understanding of PKI.
• Expert knowledge relevant to software engineering:Technologies and standards (at least 4 of them): HTML5, REST & Web Services, XML, HTTP, SQL, Visual Basic for Applications; Identity Management (OAuth, OIDC, SAML2) application integration; Application server technologies and Relational Database Management Systems; Programming languages and platforms - .NET/C#, JAVA, JavaScript; Task automation through scripting in both Windows and Linux.
• Deep understanding of security constraints and requirements in CIS.
• Deep understanding of NCIA and NATO security directives and regulations, along with understanding of industry best practices and standards.
• Familiarity with Microsoft services and tools, including Outlook, Teams, SharePoint.
• Experience and good knowledge of at least the following COTS technologies: IIS, JBOSS, Apache Tomcat; .NET based applications
• Extensive experience in deployment and management of client- server applications, application integration and data transformation for application integration;
• Strong troubleshooting skills to diagnose and resolve hardware, software, and network issues.
• Ability to guide users through problem-solving steps effectively.
• Excellent verbal and written communication skills.
• Full proficiency in English. French language proficiency is of advantage.
• Ability to communicate technical information to non-technical users in a clear and concise manner.
• Ability to work in cross-functional application management/deployment teams.
• Strong customer service focus with a commitment to user satisfaction.
• Patience and empathy when dealing with user issues and concerns.
• Ability to manage multiple support tickets and prioritize tasks effectively.
• Attention to detail in documenting support activities and maintaining accurate records.
• At least 3 years of relevant experience in the field of computer science or electronic engineering
• Very good knowledge and in various areas of Software Engineering including some of the following: Requirements elicitation and management (including non-functional requirements for Operations & Maintenance); SW change management and testing; Software design, implementation and testing; Software Engineering techniques and methodologies; Application release and deployment management; Configuration management practices and tools; Application Lifecycle Management concept and tools
• Ability to work effectively as part of a team and share knowledge and resources.
• Willingness to collaborate with colleagues to solve complex issues.
• Candidate has strong customer relationship skills, including negotiating complex and sensitive situations under pressure.
• Candidate must have the nationality of one of the NATO nations.
• Candidate must possess a NATO Secret Security Clearance or national equivalent.
• Prior experience in an international environment comprising both military and civilian elements;

How to Apply

Please contact us with your resume and a brief introduction before 07 September, 2026