Cellular Validation Engineer
Overview:
In this role you will drive performance characterization for cellular connectivity across LTE and 5G NR, lead hands-on lab bring-up on new hardware/software, and configure modems at the device level. You'll set up test networks and base station emulators to mirror real-world conditions, analyze logs to root-cause issues, and collaborate with cross-functional teams to advance validation outcomes. You'll document results, establish baselines, and present findings to engineering and program stakeholders. This position centers on delivering reliable, production-ready cellular validation at scale, leveraging Qualcomm and other chipset experience to shape device readiness.
Responsibilities:
- Plan and run device-level cellular performance tests (throughput, latency, TX power, mobility/handover, power consumption) across LTE and 5G NRLead hands-on lab bring-up of new cellular connectivity on hardware/software platforms
- Configure and tune modem/chipset settings (band config, NV/EFS, carrier/PLMN, APN/PDN, feature enablement)
- Configure and operate base station emulators/test networks to replicate network conditions
- Capture and analyze logs to isolate failures in attach, registration, signaling, mobility, throughput, RF performance
- Collaborate with chipset vendors, RF/antenna, hardware, firmware, and software teams to resolve issues
- Define test plans and acceptance criteria; build/extend automation scripts for characterization and regression testing
- Document results, performance baselines, and debug findings; present recommendations to stakeholders
Key requirements:
- Call box experience with base station emulators
- Cellular experience 2–5 years within a 10+ year career
- Direct, hands-on Qualcomm chipset experience
- Strong understanding of end-to-end cellular protocol stack (PHY–NAS) and core procedures for LTE/5G NRExperience configuring cellular chipsets at device level (Qualcomm, MediaTek, Samsung modules)
- Proficiency with log extraction/analysis tools (QXDM/QCAT/PCAT) and Wireshark
- Hands-on lab experience with base station emulators (Keysight UXM, Anritsu MT8000, R&S CMX/CMW) or private networks
- Proven track record of lab bring-up and root-causing complex connectivity issues
- Scripting for test automation and log parsing (Python, Bash)
- Familiarity with RF test equipment (spectrum analyzers, signal generators, RF shield boxes)
- Experience with RedCap and low-power optimization
- A profile without practical lab execution is disqualifying
- Cross-functional collaboration
- Analytical and problem-solving mindset
- Clear, structured communicationQXDM/QCAT/PCAT log analysis
- Wireshark and vendor-specific modem tools
- Base station emulators and test networks (Keysight UXM, Anritsu MT8000, R&S CMX/CMW)