# Senior IREG & Network Test Engineer at Skylo

- Company: Skylo
- What the company does: Skylo Technologies is a global NTN service provider, offering a service that allows smartphone and IoT cellular devices to connect directly over existing satellites. Backed by Innovation Endeavors.
- Company website: https://skylo.tech
- Type: Startups
- Level: Senior
- Location: Mountain View, CA
- Work setup: Remote
- Pay: $155K to $165K base salary per year (USD)
- Posted: 2026-08-18
- Apply by: 2026-10-14
- Apply: https://jobs.ashbyhq.com/skylo/0e310859-59b5-4593-9b5b-a902192aa8e6
- Page: https://www.1752.vc/careers/jobs/skylo-senior-ireg-and-network-test-engineer/

## About the role

Every MNO onboarding ends at a technical test gate. We are hiring an automation-oriented IREG & Network Test Engineer to own that gate—from attach and authentication through SGD, MAP, SMS, IP NIDD, and roaming sign-off. You will replace manual, partner-dependent execution with a repeatable test strategy, scalable lab, and automated regression pipeline.

## What they're looking for

- 5+ years of experience in roaming, mobile core, interconnect, IREG, or telecommunications network testing
- Hands-on understanding of Diameter and relevant SS7/MAP concepts, including S6a/S6d, SGd, and roaming authentication and registration flows
- Experience reading Wireshark or equivalent signalling traces and diagnosing network failures involving multiple parties
- Experience designing automated telecommunications testing frameworks using Python or comparable languages and CI practices
- Fluency with IR.21/RAEX, PLMN, IMSI, TADIG, and structured testing evidence
- NB-IoT, NTN, NIDD, IoT roaming, GSMA test-suite, or device-lab experience

Tags: Sales