Cellular Tester

American IT Systems • Philadelphia, PA

21h • Onsite

About The Position

This role requires a strong understanding of wireless technologies including 4G, 5G (SA, NSA, mmwave), VoLTE, VoWiFi, and RCS/SMS/MMS network architecture and protocols. The position involves extensive device testing and certification in both lab and field environments. A key aspect of the role is the ability to analyze call flows over RRC and NAS protocols and troubleshoot various scenarios. The candidate will also be responsible for collecting and triaging logs from iOS and Android devices, utilizing device logging tools, and performing data analytics and visualization.

Requirements

• Good understanding of wireless technologies including 4G, 5G (SA, NSA, mmwave), VoLTE, VoWiFi, RCS/SMS/MMS network architecture and protocols.
• 7+ years of device testing & certification experience in lab and in the field.
• Good understanding of call flows over RRC, NAS protocols, throughout scenarios.
• 2+ years of hands-on experience on testing iOS and Android devices, log collection and log triaging.
• 2+ years of experience in device logging tools like XCAP, XCAL, QXDM etc.
• 2+ years of experience of data analytics or visualization tools such as Tableau, Databricks or other clouds-based data analytics tools.
• Able to communicate to the OEM and chipset maker.
• Bachelor or higher degree in engineering.

Nice To Haves

• Good storyteller on the device issues from lab and field.

Responsibilities

• Perform device testing and certification in lab and field environments.
• Analyze call flows over RRC and NAS protocols.
• Troubleshoot various network scenarios.
• Collect and triage logs from iOS and Android devices.
• Utilize device logging tools (XCAP, XCAL, QXDM, etc.).
• Perform data analytics and visualization using tools like Tableau or Databricks.
• Communicate device issues effectively to OEMs and chipset makers.
• Tell compelling stories about device issues based on lab and field findings.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior