Description

You will be joining a dynamic, passionate team where the exceptional is every day’s reality: the resources, systems and technologies legally reserved.

Job description

We are looking for a skilled and motivated Senior Telecommunication engineer to provide Level 3 technical support and expertise for telecom and IT environments, ensure the reliability and performance of critical telecommunication solutions, and contribute to the continuous improvement of IT service quality. Senior Telecommunication Engineer plays a key role in supporting, testing, deploying, developing, and maintaining telecom systems while ensuring that user expectations and technical requirements are met.

Responsibilities:

Level 3 Support & Incident Resolution

· Handle level 3 incidents and service requests related to telecom systems (VoIP, SIP, mobile networks, routing…).

· Diagnose, analyse, and resolve technical issues in both IT and telecom environments.

· Resolve escalated complex incidents when required.

· Ensure proactive monitoring and follow-up of user environments.

· Contribute to the continuous improvement of telecom and IT support processes.

· Use ticketing tools to track incidents, requests, and resolutions.

Telecommunication Engineering & Deployment

· Support and manage when appropriate the implementation, testing, deployment, and interception of new telecommunication solutions.

· Collaborate with network operators and internal teams to troubleshoot issues.

· Work closely with team leadership and end-user representatives to ensure technical requirements and expectations are met.

· Participate in the validation and acceptance of new telecom features or services.

· Provide functional and technical support for telecom-related applications or tools.

Documentation & Continuous Improvement

· Create and maintain documentation (procedures, test plans, user guides, support materials).

· Contribute to the knowledge base and ensure documentation remains up to date.

· Demonstrate initiative, problem-solving skills, and a proactive approach to learning and development.

Collaboration & Professional Behaviour

· Work effectively as part of a team while being capable of working independently.

· Take ownership of assigned tasks, assess risks, and seek guidance when necessary.

· Maintain a professional, discrete, and stress-resistant attitude in sensitive environments.

Required experience:

· Strong knowledge of mobile network architecture:

o 2G/3G/4G/5G, VoIP, SIP, routing, etc.

o Core Network (EPC, 5GC), IMS, VoLTE

· Deep understanding of signaling protocols

· Knowledge of roaming, interconnect, and lawful interception concepts

· Experience with networking, security.

· Degree in Telecommunications, Computer Science, Network Engineering, or Cybersecurity

· 7+ years in telecommunications or mobile network environments

· Prior experience in mobile operators, MVNOs, or telecom vendors is highly desirable

· Industry certifications are a strong plus, such as 3GPP / LTE / 5G certifications

· Experience with ticketing tools and structured support workflows.

Profile description

· Analytical mindset and strong problem-solving abilities.

· Pragmatic, solution-oriented approach to technical challenges.

· Curious, eager to learn, and proactive in self-development.

· Ability to work autonomously and in a structured manner.

· Ability to handle pressure and manage priorities effectively.

· Discrete, reliable, and comfortable in sensitive environments.

· Fluent in French or Dutch, with solid understanding of the other language.

· Good command of written and spoken technical English

A ‘TOP SECRET’ level security clearance is required for this position. as referred to in the law of 11/12/1998 on classification, security clearances, attestations, and notices.

Location: Caserne de Witte de Haelen (Etterbeek)

• Roles
• Expert   Telecommunications Engineer
• Skills
• 2G/3G/4G/5G, VoIP, SIP, routing, etc
• Core network (EPC, 5GC), IMS, VoLTE
• mobile network Architecture
• support workflows
• Languages
• Dutch or FrenchLevel   Native
• EnglishLevel   Active knowledge
• Locations
• Main addressKoningsstraat, 202A - 1000 Brussel
• Remote optionHybrid