Wireless Test Engineer/ Lab Engineer
Job Description
Wireless Test Engineer(Callbox / Wireless Lab Specialist)
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Level: L1 (Entry-Level / Early Career)
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Work Location: Mountain View, CA (On-site Lab)
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Minimum Qualifications
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Education: Associate's or Bachelor's degree in Electrical Engineering, Computer Science, Telecommunications, or equivalent practical lab experience.
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Protocol Knowledge: Foundational understanding of wireless communication principles and 3GPP cellular standards (LTE and 5G NR architecture, basic signaling flow for network attach, registration, and data transfer).
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Callbox Experience: Direct academic or professional experience operating network simulators and callboxes such as Anritsu (MT8821C, MT8000A) or Amarisoft.
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Debugging Tools: Familiarity with logging and diagnostic utilities (e.g., ADB, Wireshark, terminal/command-line environments).
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Analytical Skills: Strong analytical and troubleshooting mindset with meticulous attention to detail in logging and bug reporting.
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Preferred Qualifications
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SIM / eSIM Technology: Basic familiarity with SIM architecture, profile provisioning, and Dual SIM Dual Standby (DSDS) operational flows.
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Log Analysis: Experience analyzing cellular protocol logs using tools such as Qualcomm QXDM/QCAT, Shannon DM, or equivalent chipset diagnostic software.
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Scripting Skills: Working knowledge of Python, Shell/Bash scripting, or SCPI commands for callbox test automation.
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Voice & Carrier Features: Exposure to IMS protocol flows (SIP registration, INVITE flows for VoLTE/VoNR) and carrier Technical Acceptance (TA) testing criteria.
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Hardware & RF Basics: Understanding of RF measurement fundamentals (RSSI, RSRP,RSRQ, SINR, path loss, and attenuation).