Senior Cellular Validation & Lab Bring‑Up Engineer

Spectraforce Technologies, Inc.; Sunnyvale (CA); On-site; USD 150,000 - 180,000; Full time

Job summary

Spectraforce Technologies, Inc. in Sunnyvale, CA is seeking a Senior Cellular Validation Engineer to lead end-to-end validation of LTE/5G connectivity on next-generation devices.

You will run performance tests, bring-up new hardware, tune modems, configure base stations, analyze logs, and work with cross‑functional teams to drive issues to resolution. This is a 12‑month, hands-on lab role.

Qualifications

• 10+ years hands-on experience in cellular device connectivity or cellular system test.
• Strong understanding of end-to-end cellular protocol stack (PHY to NAS) and core network procedures for LTE/5G.
• Experience configuring cellular chipsets at the device level (e.g., Qualcomm, MediaTek, Samsung).
• Proficiency with log extraction and analysis tools such as QXDM / QCAT / PCAT, plus Wireshark and vendor-specific modem tools.
• Hands-on experience setting up the network side, using base station emulators and/or live/private networks.
• Proven track record of lab bring-up of new cellular hardware or software and root-causing complex connectivity issues.

Responsibilities

• Plan and run device-level cellular performance tests (throughput, latency, TX power, mobility) across LTE, 5G NR, and legacy RATs.
• Lead hands-on bring-up of cellular connectivity on new hardware and software platforms from first attach to production-ready performance.
• Configure and tune modem settings at the device level, including band config, NV/EFS items, carrier/PLMN, APN/PDN, and feature enablement.
• Configure and operate base station emulators and test networks to replicate real-world conditions.
• Capture and analyze modem and protocol logs to isolate failures in attach, registration, signaling, mobility, throughput, and RF performance.
• Cross-functional debugging with chipset vendors, RF/hardware, firmware, and software teams; document reproduction steps.
• Define test plans and build automation scripts for repeatable characterization and regression testing.
• Document results and present recommendations to engineering and program stakeholders.

Skills

Call box experience

Cellular knowledge

Qualcomm chipset experience

Lab bring-up experience

Education

Bachelor's or Master's degree in Electrical Engineering, Telecommunications, Computer Engineering, or a related field

Tools

QXDM

QCAT

PCAT

Wireshark

Keysight UXM

Anritsu MT8000

R&S CMX/CMW

Python

Bash scripting

Job description

Spectraforce Technologies, Inc. in Sunnyvale, CA is seeking a Senior Cellular Validation Engineer to lead end-to-end validation of LTE/5G connectivity on next-generation devices.

You will run performance tests, bring-up new hardware, tune modems, configure base stations, analyze logs, and work with cross‑functional teams to drive issues to resolution. This is a 12‑month, hands-on lab role.