Systems Engineer - Critical Communication

Thales is hiring a Systems Engineer - Critical Communication. Level rates it ; you can apply on Level.

AI in this role

Design, integrate, and support critical communication systems and network infrastructure for defense and homeland customers.

vmwareciscobashpythonasterisk

systems-integrationnetwork-infrastructuretelecommunicationstechnical-supportvoip

Location: Tubize, Belgium

Your mission :
The Critical Communication Systems Engineer will be part of the system engineering department of THALES BELGIUM, which is responsible for the integration of critical communication solutions for homeland and defense customers.
As part of your activities, you will join be a major stakeholder in the design, delivery and maintenance of complex systems used by our critical communication customer to fulfill their needs.

Your responsibilities:
• Understand and analyze the customer’s needs;
• Find the best solution and support the solution definition to meet the customer operational needs;
• Write technical specification definition and support Thales’s subcontractors;
• Contribute to the test plan to demonstrate functionality and stability;
• Contribute to configuring, supporting, monitoring and troubleshooting customer network infrastructure ;

• Being part of the engineering discipline and reporting in dotted line to the Service Manager, you take ownership of technical upgrades of the customer's systems, according to the roadmap and agreements with the customer and Service Manager.
• Setup, maintain, improve and document the System Integration Lab, including
telecommunication equipment;
• Prepare, configure equipment for Proof of Concept (PoC) of solution;
Plan and document the service activities;
Support clients in resolving technical problems and taking advantage of such opportunities;
• Collaborate with the Incident Manager in our service organization for our 24x7 support projects. Communicate about modifications on the production system.
• Be part on the 24x7 on-call team when showing sufficient autonomy

Your profile :
• Engineering Master degree in Computer Science and/or Telecommunications with at least 3 years of relevant experience in systems integration and/or advanced technical support (L2/L3);
• The Critical Communication Systems Engineer needs to be a technical passionate. Based on their previous expertise on systems and networks, they will be eager to discover new technologies;
• Demonstrable skills in at least 4 of the following fields:

Datacenter virtualization (VMWare ESXi clusters is an asset).
Managed network equipment (Cisco is an asset).
Scripting (Bash - Python).
Linux and windows servers.
IP networks (including routing, QoS, VPN and NAT).
VoIP, SIP, Asterisk

• Interest for Cybersecurity (network security in particular) is an asset;
• Fluent in English (professional capacity); Fluent in French or Dutch is an asset;
• Capacity for innovation;
• Capability to organize work and share updates through Kanban

YOUR CAREER AT THALES

Future opportunities will allow you to discover other domains or sites. You will be able to evolve and grow your Competencies in different areas:

Room for and attention to personal development
Build your talents in another domain of Thales Group, discovering new products, new customers, new country or move to a more complex Solution
Choose between a technical expert or a leadership path
Build an international career within a leading Engineering Group

How we rate this

Systems Engineer - Critical Communication at Thales rates 0 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Open the description and count.

Key facts

Systems Engineer - Critical Communication is an open job at Thales.
Level rates this role AI Level 1 of 4: Little AI.
The role is based in Tubize.
The job was posted on September 29, 2026.
Seniority: mid.
Applications are handled by Thales. Apply on Thales

Prepare for this job

A free preview built only from this posting: what it asks for, what you could be asked in an interview, and how to adjust your resume.

Skills and AI tools this role asks for

Systems IntegrationNetwork InfrastructureTelecommunicationsTechnical SupportVoipVmwareCiscoBash

Questions you could be asked

Tell me about a project where systems integration was part of your work. What did you do?
Tell me about a project where network infrastructure was part of your work. What did you do?
Tell me about a project where telecommunications was part of your work. What did you do?
Tell me about a project where technical support was part of your work. What did you do?
Tell me about a project where voip was part of your work. What did you do?

Adapt your resume

List these exact terms on your resume: Systems Integration, Network Infrastructure, Telecommunications, Technical Support, and Voip. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them — a tool named with nothing behind it rarely survives a human read.

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