Security Clearance Required: NATO Secret or national equivalent
About the Role
We are looking for a skilled L3 Application Support Engineer to join a high-performing team operating within a secure and mission-critical environment. You will be responsible for managing cloud and on-premise infrastructure, resolving advanced technical issues, and enhancing the end-user experience by ensuring availability, security, and performance of supported applications and systems.
Key Responsibilities
Technical Support & Troubleshooting
- Provide third-line support for COTS applications and end-user systems (Windows, Linux, macOS, iOS, Android)
- Troubleshoot and resolve software, infrastructure, and integration issues
- Monitor application performance and maintain operational continuity
Cloud & DevOps
- Configure and manage CI/CD pipelines in Azure and AWS
- Administer cloud components, roles, and security (including EntraID group/role management)
- Implement and support Kubernetes containers in private cloud environments
Security & Compliance
- Support secure access to restricted environments and manage software/hardware compliance
- Apply PKI, identity management (OAuth, OIDC, SAML2), and NATO security directives
- Collaborate on application accreditation and security audits
Knowledge & Incident Management
- Document and update internal knowledge base
- Log, track, and resolve incidents in ticketing systems in line with SLAs
- Escalate complex cases and follow up until resolution
Collaboration & Communication
- Work closely with internal teams and stakeholders to improve service delivery
- Clearly communicate technical issues and solutions to non-technical users
Required Skills & Experience
Technical Expertise
- Strong experience with Windows/Linux server infrastructure, Active Directory, and SQL Server (2016–2022)
- Solid knowledge of .NET/C#, Java, JavaScript, XML, HTML5, REST APIs, and IIS
- Experience with cloud deployments and security in Azure and AWS
- Familiar with tools like Jira, Confluence, Wolters Kluwer TeamMate, and GENPACT Sequence Kinetics/Cora
- Scripting for automation in PowerShell, Bash, or equivalentAnalytical & Organizational
- Proven troubleshooting skills for complex systems and environments
- Ability to prioritize incidents and manage multiple concurrent tasks
Soft Skills
- Excellent English communication (verbal and written); French is a plus
- Strong customer service mindset and ability to work under pressure
- Effective collaborator with a proactive knowledge-sharing attitude
Additional Requirements
- Nationality of a NATO member country
- Experience working in international/military/civilian hybrid environments is a plus
Work Environment & Conditions
- Full-time, 100% on-site in Braine-l’Alleud (occasional remote work possible with approval)
- Participation in daily stand-ups, sprint reviews, and regular status reporting
- Must submit a short written report summarizing deliverables after each sprint
- May involve short-term travel to other NATO sites (≤2 weeks per trip)
Opportunities are numerous. From bare applications development to of IT infrastructures management including conception, architecture and requirements analysis.
Although open to technologies used by our customers, ABAKUS IT-SOLUTIONS seeks mainly but not only consultants mastering: Windows and Linux Servers, networks, developments (JAVA, SAP, .NET,…) as well as highly specialized experts for example in cybersecurity or in Content Management System (CMS) (SharePoint, Drupal, WebLogic…).
In terms of non-technical competencies, ABAKUS IT-SOLUTIONS hires dynamic persons, open to the world, interested by innovation and having a keen sense of client relationship.
A very good command of English is essential, the capacity to speak French, German or Dutch is an asset.
Even though most of our positions require at least 3 years of experience, some are open to new starters.
