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Modem System Test Engineer Jobs in California (NOW HIRING)

Zoox

Autonomy System Test Engineer

Foster City, CA

As an Autonomy Systems Test Engineer at Zoox, you will help accelerate our product development by helping our developers build the safest and most reliable autonomous driving software possible. As ...

Anduril Industries

EMC System Test Engineer

Costa Mesa, CA · On-site

$129K - $171K/yr

ABOUT THE ROLE We are looking for a System Test Engineer with a focus on EMI/EMC to join our rapidly growing team in Costa Mesa, CA. In this role, you will work closely with avionics, system, and ...

Cubic Corporation

Systems Test Engineer

San Diego, CA · On-site

$82K - $102K/yr

Responsible for testing software and Hardware involving communication system architectures ... modem processing. * Participates in the bidding process * Leads and mentors lower level engineers ...

Blue Star Families

Systems Test Engineer

San Diego, CA · On-site

$82K - $102K/yr

Responsible for testing software and Hardware involving communication system architectures ... modem processing. * Participates in the bidding process * Leads and mentors lower level engineers ...

RADAR

Systems Test Engineer

San Diego, CA · On-site

$75K - $120K/yr

The System Test Engineer will be responsible for developing and maintaining physical lab environments, executing test plans, and communicating results to cross-functional teams. The ideal candidate ...

Nvidia

Senior System Test Engineer

Santa Clara, CA · On-site

We are looking to hire a System Test Engineer who will work in the test solutions group at NVIDIA developing manufacturing test solutions for Datacenter products. Through HW and SW expertise, you ...

Intuitive

SENIOR SYSTEM TEST ENGINEER

Sunnyvale, CA · On-site

As a Senior System Test Engineer within the Multiport System & Release team, you will be responsible for all aspects of system level software verification test activities to ensure the high quality ...

Intuitive

Senior System Test Engineer

Sunnyvale, CA · On-site

As a Senior System Test Engineer within the Multiport System & Release team, you will be responsible for all aspects of system level software verification test activities to ensure the high quality ...

Intuitive

SENIOR SYSTEM TEST ENGINEER

Sunnyvale, CA · On-site

$122K - $167K/yr

As a Senior System Test Engineer within the Multiport System & Release team, you will be responsible for all aspects of system level software verification test activities to ensure the high quality ...

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All JobsModem System Test Engineer JobsModem System Test Engineer Jobs in California

Modem System Test Engineer information

What is the difference between Modem System Test Engineer vs Modem Firmware Engineer?

AspectModem System Test EngineerModem Firmware Engineer
Primary FocusTesting and validation of modem systems and hardwareDeveloping and optimizing modem firmware and software
Required SkillsTesting methodologies, hardware troubleshooting, knowledge of communication protocolsEmbedded programming, firmware development, C/C++ skills
Work EnvironmentTesting labs, hardware integration environmentsSoftware development environments, embedded systems
Common CertificationsISTQB, hardware testing certificationsEmbedded systems certifications, C programming certifications

While both roles involve working with modems, the Modem System Test Engineer primarily focuses on testing and validating hardware and system performance, whereas the Modem Firmware Engineer concentrates on developing and maintaining the firmware that runs on modems. Both roles are essential in the modem development lifecycle and often collaborate closely.

What are Modem System Test Engineers?

Modem System Test Engineers are professionals who design, develop, and execute tests to ensure the reliability and performance of modem systems, which enable wireless communication in devices such as smartphones and IoT gadgets. They work with hardware and software teams to identify, troubleshoot, and resolve issues related to connectivity, data transmission, and network compatibility. Their responsibilities often include automating test cases, analyzing logs, and validating modem features against industry standards. This role is crucial in ensuring that wireless products deliver high-quality user experiences and comply with regulatory requirements.

What are the typical challenges faced by a Modem System Test Engineer when working with new device releases?

Modem System Test Engineers often encounter challenges related to ensuring compatibility and performance across a wide range of networks and devices, especially during new device launches. Rapidly evolving hardware and software can introduce unexpected bugs, requiring thorough regression and exploratory testing. Additionally, collaborating with cross-functional teams, such as development, QA, and carrier partners, is essential to address integration issues and meet tight project deadlines. Staying adaptable and maintaining clear communication are key to overcoming these obstacles.
What are popular job titles related to Modem System Test Engineer jobs in California? For Modem System Test Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching Modem System Test Engineer jobs in California look for? The top searched job categories for Modem System Test Engineer jobs in California are:
Modem System Test Engineer jobs near you
Infographic showing various Modem System Test Engineer job openings in California as of June 2026, with employment types broken down into 67% Full Time, and 33% Contract. Highlights an 100% In-person job distribution.

Autonomy System Test Engineer

Zoox

Foster City, CA

Full-time

Posted 5 days ago

Job description

Autonomous vehicles have some of the largest, most complex software ever shipped in a safety-critical environment. Solving that problem is one of the most exciting technical challenges of our lifetime.
 
As an Autonomy Systems Test Engineer at Zoox, you will help accelerate our product development by helping our developers build the safest and most reliable autonomous driving software possible. As developers build new features, you will oversee the development of extensive test plans, develop standardized simulated test design tooling processes to execute many different scenarios and put together triage pipelines for analyzing issues seen during offline and on-vehicle testing. These efforts are critical to exposing unforeseen failure modes, implementation bugs, and other issues as a result of new feature development. You will participate regularly in in-vehicle testing missions where you will see these new features behaving in the real world. Following these missions, you will help triage and root cause issues seen during testing, analyze test results to ensure existing functionality does not regress from release to release, and update our testing processes to ensure QA can continue scaling efficiently with future Zoox milestones. Your ability to distill complex systems and root cause issues will be critical to producing a safe and stable vehicle platform.
In this role, you will:

  • Create test strategies and test plans for Zoox’s self-driving behavior features.

  • Identify, track, report, and resolve test strategy, planning, or implementation issues with cross-functional software development teams

  • Propose, prototype, and validate a new testing methodology for driving software features using automated metrics.

  • Design, develop, and execute synthetic and log-based test scenarios on an in-house simulation test framework

  • Compile triage strategy and triage results from different QA validation platforms and pipelines 

  • Lead cross-functional QA participation in various testing pipelines, initiatives, and enablement projects.

Qualifications:
  • Bachelor’s or Master’s in Computer Science, Electrical Engineering, or related field
  • 3+ years of experience in designing and implementing scalable software systems test strategies with excellent analytical, problem-solving, and prioritization skills
  • Proficiency with automated test framework and test automation
  • Experience with JIRA, GIT, Linux command line, Python, or other scripting languages
  • Strong organizational, leadership, and communication skills
Bonus Qualifications:
  • Relevant industry experience in software and systems testing for robotics, autonomous mobility, or safety-critical systems.
  • Familiarity with ISO 26262 or other safety standards
  • Proficiency with Claude Code or other AI coding tools 
Base Salary Range
 
There are three major components to compensation for this position: salary, Amazon Restricted Stock Units (RSUs), and Zoox Stock Appreciation Rights. A sign-on bonus may be offered as part of the compensation package. The listed range applies only to the base salary. Compensation will vary based on geographic location and level. Leveling, as well as positioning within a level, is determined by a range of factors, including, but not limited to, a candidate's relevant years of experience, domain knowledge, and interview performance. The salary range listed in this posting is representative of the range of levels Zoox is considering for this position.
 
Zoox also offers a comprehensive package of benefits, including paid time off (e.g. sick leave, vacation, bereavement), unpaid time off, Zoox Stock Appreciation Rights, Amazon RSUs, health insurance, long-term care insurance, long-term and short-term disability insurance, and life insurance.
About Zoox
Zoox is developing the first ground-up, fully autonomous vehicle fleet and the supporting ecosystem required to bring this technology to market. Sitting at the intersection of robotics, machine learning, and design, Zoox aims to provide the next generation of mobility-as-a-service in urban environments. We’re looking for top talent that shares our passion and wants to be part of a fast-moving and highly execution-oriented team.

Follow us on LinkedIn

Accommodations
If you need an accommodation to participate in the application or interview process please reach out to accommodations@zoox.com or your assigned recruiter.

A Final Note:
You do not need to match every listed expectation to apply for this position. Here at Zoox, we know that diverse perspectives foster the innovation we need to be successful, and we are committed to building a team that encompasses a variety of backgrounds, experiences, and skills.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.