Job Description

On-site E2E SIP Troubleshooter / Tester (Test Tools, E2E VoLTE/IMS, cloud,VNFs, fALU Core, CFX, NTAS, SBC )

On-site E2E SIP Troubleshooter, on-site tester – 100% – From Europe - 100% - asap until 30.10.2021

The E2E SIP Troubleshooter

a. Owns the list of all issues found during E2E VoLTE/IMS tests. Prioritizes issues in collaboration with customer and TPMs.
b. Retrieves and investigates E2E traces on all IMS interfaces. Collaborates with customer personnel to perform OJT and ramp-up their knowledge in IMS/VoLTE on Cloud products.
c. Identifies the product causing the issue and the detail of the call flow failure (wrong parameter, repeated message, wrong sequence, wrong answer, …)
d. Collaborates with product owners to make sure they understand and acknowledge the failure (product owner can be Nokia VNF owner, UE vendor, 3rd-party VNFs, fALU Core, etc…)
e. Writes tickets to product owners / towards support or R&D if required
f. Follows-up with product owners /support / R&D the resolution of the issues
g. Participates to on-site tests and should be able to reproduce issues / to re-test after failures are fixed / to perform regression tests. Collaborates with customer for those tests as well.
h. Troubleshooting should take 70 to 80% / tests 20 to 30%

Profile : Very autonomous to connect to customer network to check/modify configuration, investigate/retrieve traces
Should have deep IMS calls flows knowledge + IMS architecture. Better if he/she has fair knowledge on CFX, NTAS, SBC products
Experience in E2E tests, autonomous on UEs manipulations and tests tools

Quick learner, autonomous, efficient
Should be able to provide issues summary at different levels (management/customer/technical audience)

Should speak perfect English