Cellular Validation Engineer

Mackin Talent; Sunnyvale (CA); Sur place; USD 140 000 - 180 000; Plein temps

Résumé du poste

Mackin Talent seeks an experienced Senior Cellular Connectivity Test Engineer to lead bring-up, validation, and debugging across new hardware and software platforms. You will work hands-on with Qualcomm chipsets, cellular call boxes, and emulators to reproduce real-world network conditions.

You will configure modem settings, analyze logs, and collaborate with chipset vendors and cross-disciplinary teams to drive robust LTE/5G performance and automation.

Qualifications

• Bachelor's or Master's degree in Electrical Engineering, Telecommunications, Computer Engineering, or a related field.
• 10+ years of relevant engineering experience with 2–5 years in direct cellular work.
• Hands-on experience with Qualcomm chipsets and device-level modem configuration.
• Experience operating cellular test boxes or base station emulators (Keysight UXM, Anritsu MT8000, or R&S CMX/CMW).
• Strong knowledge of LTE/5G protocol stacks and RF metrics (RSRP/RSRQ/SINR/CQI).
• Proficient in modem logging/analysis tools (QXDM, QCAT, PCAT) and scripting for automation.

Responsabilités

• Lead cellular lab bring-up from attach to production-ready performance.
• Test throughput, latency, power, mobility, and RF metrics across LTE/5G.
• Configure modem settings and networks, including CA, EN-DC, VoLTE/VoNR, and PSM/eDRX.
• Operate base station emulators and test networks to reproduce real-world conditions.
• Analyze logs to troubleshoot registration, connectivity, and performance issues.
• Collaborate with chipset vendors and cross-functional teams to resolve issues.
• Develop test plans, acceptance criteria, and regression automation.
• Document baselines, findings, and recommendations for engineering teams.

Connaissances

Qualcomm chipsets

Cellular testing

Test automation

Python scripting

Bash scripting

RF measurements

Formation

Bachelor's or Master's in Electrical Engineering / Telecommunications

Outils

Keysight UXM

Anritsu MT8000

R&S CMX/CMW

QXDM

Wireshark

Description du poste

Senior Cellular Connectivity Test Engineer

Mackin Talent is seeking an experienced engineer to lead cellular connectivity bring-up, performance testing, and debugging across new hardware and software platforms. This hands‑on role requires strong experience with Qualcomm chipsets, cellular call boxes, and LTE/5G device validation.

What You'll Do

• Lead cellular lab bring-up, from initial network attach and data calls through stable, production‑ready performance.


• Test throughput, latency, transmit power, mobility/handover, and power consumption across LTE, 5G NR (SA/NSA), and legacy technologies as applicable.


• Configure modem settings, including bands, NV/EFS items, carrier/PLMN settings, APN/PDN setup, and features such as CA, EN-DC, VoLTE/VoNR, and PSM/eDRX.


• Configure and operate base station emulators, call boxes, and test networks to reproduce real‑world and challenging network conditions.


• Analyze modem, protocol, and network logs to troubleshoot registration, signaling, connectivity, throughput, and RF performance issues.


• Partner with chipset vendors and RF, antenna, hardware, firmware, and software teams to resolve issues.


• Develop test plans, acceptance criteria, and automation scripts for characterization and regression testing.


• Document performance baselines, findings, and recommendations for engineering and program teams.

Required Qualifications

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


• 10+ years of relevant engineering experience, including at least 2-5 years of direct, hands‑on cellular experience.


• Hands‑on experience with Qualcomm chipsets and device‑level modem configuration.


• Demonstrated experience operating cellular call boxes or base station emulators, such as Keysight UXM, Anritsu MT8000, or R&S CMX/CMW.


• Strong understanding of LTE/5G protocol stacks, including PHY, MAC, RLC, PDCP, RRC, NAS, and core network procedures.


• Knowledge of scheduling, link adaptation, power control, and RF metrics such as RSRP, RSRQ, SINR, and CQI.


• Proficiency with modem logging and analysis tools such as QXDM, QCAT, PCAT, Wireshark, and vendor‑specific tools.


• Proven experience bringing up new cellular hardware or software and resolving complex connectivity issues.


• Familiarity with spectrum analyzers, signal generators, RF shield boxes, channel emulators, and power analyzers.


• Experience with RedCap and low‑power optimization.


• Python/Bash scripting skills for test automation and log parsing.

Preferred Experience

• Extensive Qualcomm modem log analysis and troubleshooting.


• Cellular device validation experience at a major telecom company or device manufacturer.


• Development of repeatable characterization and regression automation.

Pursuant to the California Fair Chance Act, Los Angeles County Fair Chance Ordinance for Employers, Los Angeles Fair Chance Initiative for Hiring Ordinance, and San Francisco Fair Chance Ordinance, qualified applicants will be considered for assignment with arrest and conviction records. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness, meet client expectations, standards, and accompanying requirements, and safeguard business operations and company reputation.