Senior IREG & Network Test Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior IREG & Network Test Engineer based in United States. This role sits at a critical technical stage of mobile network operator onboarding, ensuring roaming and connectivity services meet rigorous validation standards before launch.You will own the IREG testing lifecycle, from initial network registration and authentication through signaling, messaging, data connectivity, and final roaming sign-off.The position combines deep telecommunications expertise with a strong automation mindset to replace manual testing with scalable, repeatable validation processes.You will design test strategies, build automation frameworks, analyze complex network traces, and turn production issues into durable regression coverage.Working across signaling, routing, billing, NOC, product, IPX, and mobile network operator teams, you will help resolve issues spanning multiple technical domains.Your work will directly support market readiness and reliable connectivity across terrestrial and non-terrestrial network environments.This is an opportunity to contribute to advanc... Click Apply to read the full job description.