Enter a job title or keyword
Wireless Systems Embedded Firmware Engineer III
Job Location:
Job Location:
Sunnyvale, CA - USA
Hourly Salary:
USD 70 - 80
Hourly Salary:
Posted:
8 September 2026 (13 hours ago)
Posted:
Application Deadline:
6 December 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
Job Role: Wireless Systems Embedded Firmware Engineer III
Location: Sunnyvale CA (Onsite)
Duration: 6 Months
Bachelors in Engineering required
Day-to-Day Responsibilities: Cellular Test Engineer (5G NR / LTE)
Test execution & validation
Location: Sunnyvale CA (Onsite)
Duration: 6 Months
Bachelors in Engineering required
Day-to-Day Responsibilities: Cellular Test Engineer (5G NR / LTE)
Test execution & validation
- Execute conformance functional and regression test campaigns on 5G NR (SA/NSA) and LTE devices covering RRC/NAS signaling mobility carrier aggregation and data-throughput scenarios.
- Validate radio protocol behavior against 3GPP specs and log findings with clear reproduction steps.
- Run RF performance measurements (TX power sensitivity EVM spurious emissions throughput vs. signal level) and compare results against product requirements.
Automation on CMX/CMW
- Build maintain and extend automated test scripts and suites on Rohde & Schwarz CMX500/CMW callbox platforms.
- Own the nightly/weekly automated regression pipeline: monitor runs triage failures and keep the suite . as firmware drops land.
- Develop Python tooling for test sequencing instrument control result parsing and reporting; reduce manual test time through incremental automation.
Lab bench & hardware debug
- Set up and operate lab benches: callboxes spectrum/signal analyzers power supplies attenuators shield boxes and RF cabling.
- Use an oscilloscope for signal integrity timing and power-sequencing debug on device hardware; isolate whether an issue is RF protocol or hardware in origin.
- Maintain bench calibration cable loss characterization and equipment health; keep test setups documented and reproducible.
Debug & cross-functional work
- Analyze protocol logs (QXDM/QCAT modem traces callbox logs) to root-cause failures and narrow them to a specific layer or component.
- Partner with firmware RF and hardware engineers to reproduce issues verify fixes and confirm no regressions.
- File track and drive defects to closure; escalate blockers affecting release milestones.
Reporting & continuous improvement
- Produce daily/weekly test status summaries: pass rates new failures coverage gaps and blocking issues.
- Contribute to test plan development for new features chipsets and bands; expand coverage where automation or scenarios are thin.
- Document test procedures bench configurations and known issues so results are repeatable across engineers and sites.
Must have skills:
- The ideal candidate has hands-on experience with cellular testing across both 5G NR and LTE technologies including radio protocol validation RF performance and conformance/functional test execution.
- They should be proficient with test automation on CMX (Rohde & Schwarz CMX500/CMW callbox platforms) building and maintaining automated test scripts and regression suites.
- Strong lab bench skills are expected including confident use of an oscilloscope and related instrumentation for signal integrity timing and hardware debug.
- Familiarity with scripting (e.g. Python) for test automation along with a solid grasp of cellular signaling and measurement fundamentals will round out the profile.
- Bachelors degree in engineering.
Preferred Qualifications:
- Masters degree in Computer Engineering or Electrical Engineering
- Lab - engineer experience
- Engineering degree preferred
Required Experience:
IC
