[6072] L3 Support Engineer

Start date: Negotiable
Clearance: NATO Secret or equivalent
Location: Braine L'Alleud

Requirements:

• Strong experience supporting Windows, Android, and Apple devices
• Good knowledge of Linux and Windows server environments, including Active Directory
• Experience with Microsoft SQL Server and IIS web applications
• Solid networking infrastructure knowledge
• Good understanding of AWS and Azure cloud technologies
• Knowledge of PKI and security principles
• Experience with software engineering technologies such as HTML5, REST APIs, XML, HTTP, SQL, .NET/C#, Java, and JavaScript
• Familiarity with Identity Management technologies including OAuth, OIDC, and SAML2
• Experience with scripting and task automation in Windows and Linux environments
• Understanding of CIS and NATO/NCIA security standards and best practices
• Familiarity with Microsoft tools including Outlook, Teams, and SharePoint
• Experience using Atlassian tools such as Jira, Jira Service Management, and Confluence
• Knowledge of IIS, JBoss, and Apache Tomcat
• Experience with application deployment, integration, and configuration management
• Exposure to software development lifecycle processes including testing, release management, and change management
• Strong troubleshooting and technical problem-solving skills
• Ability to support and guide users through technical issues
• Strong written and verbal communication skills in English
• Ability to explain technical concepts to non-technical stakeholders
• Experience working within collaborative technical teams
• Strong customer service and stakeholder management skills
• Good organisational skills with ability to manage multiple priorities
• Detail-oriented with strong documentation practices
• Ability to work effectively in international and high-pressure environments
• NATO nationality and NATO Secret Clearance (or equivalent) required

Activities:

• Deploy and support COTS applications across Windows and Linux server environments
• Support application integration with identity providers and authentication systems
• Assist with deployment and support of client applications on end-user devices
• Monitor and report on KPIs and operational metrics
• Manage and configure cloud environments across AWS and Azure
• Administer EntraID groups, roles, and access permissions
• Provide 2nd and 3rd line end-user support in line with SLA requirements
• Troubleshoot and resolve software and application-related issues efficiently
• Communicate technical solutions and guidance clearly to users and stakeholders
• Monitor, log, and track incidents through helpdesk/ticketing systems
• Ensure tickets are updated accurately and resolved within agreed service levels
• Escalate complex technical issues to vendors or specialist teams where required
• Follow through on escalations to ensure timely resolution and user satisfaction
• Contribute to knowledge base documentation and sharing of best practices
• Support documentation of requirements, change requests, and technical specifications
• Participate in technical reviews, walkthroughs, audits, and documentation reviews
• Manage access control to restricted systems and environments
• Support software and hardware security, functionality, and compliance activities
• Monitor infrastructure and applications, identifying and reporting issues proactively
• Support security accreditation and approval processes for applications and CIS environments
• Ensure compliance with NCIA/NATO security regulations and standards
• Gather functional and non-functional requirements where required
• Work closely with Service Delivery Managers, Project Managers, vendors, and stakeholders
• Act as a point of contact for operational support teams and daily service activities
• Deliver briefings, updates, and presentations to technical and non-technical audiences