Mobile Core Technical Tester- Volte/E2E/R4

We are looking for Engineers that have END TO END TESTING EXPERIENCE to test all end user testcases.
VOLTE CORE or R4 background is very helpful

PURPOSE OF FUNCTION:

Perform testcalls in a mobile network environment and verify if these calls are processed properly.

This includes documenting the executed testcases & safeguarding the calldata.
Test description is provided at high level only - tester must be capable to elaborate independently

TECHNICAL COMPETENCES

Good understanding of building blocks of a Mobile Network (2G, 3G, 4G, VoLTE).
Good understanding of IP-networking/routing technologies.
Good understanding of call types, subscriber types and features in a Mobile Network.
Good understanding of 3GPP standards.
Experience in use of call tracing tools (eg OSIX).
Experience in execution of test calls in a mobile network.

GENERAL COMPETENCES

Language: Fluent in English (mandatory)
Windows PC
Availability to work on site in Belgium (mainly Brussels area)
Willingness to work in shifts and weekends when needed
HIgh level of accountability and quality orientation