Wireless Systems Embedded Firmware Engineer V

eTeam Inc.

Sunnyvale, CA
6 days ago

$90–$100 Per Hour

Highlights

Network-side setup: Configure and operate base station emulators and test networks (e.g., Keysight/Anritsu/R&S call boxes, private LTE/5G networks, small cells, or open-source cores) to replicate real-world and corner-case network conditions. Log analysis and root cause: Capture and analyze modem and protocol logs (QXDM/QCAT, PCAP, AT-command traces, network-side logs) to isolate and root-cause failures in attach, registration, RRC/NAS signaling, mobility, throughput, and RF performance.

Numbers & Facts

Location	Sunnyvale, CA
Industry	Other/Not Classified
Salary	$90–$100 Per Hour
Company Size	100 to 499 employees
Year Founded	1998
Website	www.eteaminc.com

Description

Job Role: Wireless Systems Embedded Firmware Engineer V (Cellular Validation Engineer)
Location: Sunnyvale, CA (Onsite)
Duration: 12 Months

Key Responsibilities

Performance characterization: Plan and run device-level cellular performance tests (throughput, latency, TX power, mobility/handover, power consumption) across LTE, 5G NR (SA/NSA), and legacy RATs as applicable.
Lab bring-up: Lead hands-on bring-up of new cellular connectivity on new hardware and software platforms, from first attach and data call through stable, production-ready performance.
Chipset configuration: Configure and tune cellular modem/chipset settings at the device level, including band configuration, NV/EFS items, carrier and PLMN settings, APN/PDN setup, and feature enablement (CA, EN-DC, VoLTE/VoNR, PSM/eDRX).
Network-side setup: Configure and operate base station emulators and test networks (e.g., Keysight/Anritsu/R&S call boxes, private LTE/5G networks, small cells, or open-source cores) to replicate real-world and corner-case network conditions.
Log analysis and root cause: Capture and analyze modem and protocol logs (QXDM/QCAT, PCAP, AT-command traces, network-side logs) to isolate and root-cause failures in attach, registration, RRC/NAS signaling, mobility, throughput, and RF performance.
Cross-functional debugging: Work with chipset vendors, RF/antenna, hardware, firmware, and software teams to drive issues to resolution; file and track issues with clear reproduction steps and evidence.
Test development: Define test plans and acceptance criteria; build or extend automation scripts for repeatable characterization and regression testing.
Reporting: Document results, performance baselines, and debug findings, and present recommendations to engineering and program stakeholders.

Required Qualifications

Bachelor's or Master's degree in Electrical Engineering, Telecommunications, Computer Engineering, or a related field.
10+ years of hands-on experience in cellular device connectivity, modem integration, or cellular system test.
Solid understanding of the end-to-end cellular protocol stack (PHY, MAC, RLC, PDCP, RRC, NAS) and core network procedures for LTE and 5G NR.
Strong grasp of cellular concepts: scheduling, link adaptation, power control, and key RF metrics (RSRP, RSRQ, SINR, CQI).
Experience configuring cellular chipsets at the device level (e.g., Client, MediaTek, Samsung modules).
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 (Keysight UXM, Anritsu MT8000, R&S CMX/CMW) and/or live or private networks.
Proven track record of lab bring-up of new cellular hardware or software and of root-causing complex connectivity issues.
Comfortable working with lab equipment: spectrum analyzers, signal generators, RF shield boxes, channel emulators, and power analyzers.
Experience with technologies RedCap and low-power optimization.
Scripting and automation skills (Python, Bash) for test automation and log parsing.

Must-Have Skills

Call box experience demonstrated hands-on work with the base station emulators / call boxes used for cellular validation.
Cellular knowledge a minimum of 2 5 years of direct cellular experience (within an overall 10+ year career profile).
Client chipset experience direct, hands-on work with Client chipsets, which are used across all client's device validation.

Nice-to-have Skills:

Industry experience with Client chipsets and Client logs the single biggest differentiator on a resume, since Client logging is used throughout validation.
Background at Apple or a major telecom/OEM these profiles tend to carry the relevant Client and cellular device exposure.
Test automation experience Python/Bash scripting for repeatable characterization, regression testing, and log parsing.

About Company

Looking for a great job? Join eTeam. We’re looking for talented staffing professionals to join our staff. We also provide contract assignments and full-time jobs at Fortune 2000 Companies. We’ve been named one of the best companies to work for by Staffing Industry Analysts and New Jersey Business.