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Modem System Test Engineer Jobs in California (NOW HIRING)

Google

Test Engineer, System Test

Mountain View, CA · On-site

Pixel Test Engineering encompasses all aspects of pixel products testing. As part of our organization, the System Test team is tasked with producing, monitoring, and maintaining quality signals in ...

Nvidia

System Test Engineer

Santa Clara, CA

... Test Engineer to manage Datacenter product testers. You will be joining the Test Solution Group that architects and develops manufacturing test solutions for Datacenter system products at NVIDIA.

Zoox

System Test Engineer

San Diego, CA · On-site

$150K - $186K/yr

Zoox is seeking a highly motivated System Test Engineer to be a technical contributor supporting the System Integration and Validation team. You will be leading the integration and validation of ...

Zoox

System Test Engineer

San Diego, CA

$150K - $186K/yr

Zoox is seeking a highly motivated System Test Engineer to be a technical contributor supporting the System Integration and Validation team. You will be leading the integration and validation of ...

AeroVironment

System Test Engineer III

Moorpark, CA · On-site

$100K - $153K/yr

Worker Type Regular Summary The System Test Engineer III develops and executes System Test Plans for small, unmanned air vehicles and missiles and their associated subsystems. Testing encompasses ...

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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 is a modem system test engineer?

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 August 2026, with employment types broken down into 17% Internship, 66% Full Time, and 17% Contract. Highlights an 100% In-person job distribution.

Robotics System Test Engineer

Gritt

South San Francisco, CA • On-site

Full-time

Posted 20 days ago

Job description

Gritt is an intelligent system that combines robotics and AI to build the infrastructure that pulls society forward. Gritt deploys via simple attachments to common equipment found on construction sites and autonomously performs labor-intensive tasks, verification, and planning. Gritt systems are already building critical infrastructure in the harshest outdoor environments, starting with large-scale solar. The founding team includes experts in robotics and AI from Carnegie Mellon, Stanford, and MIT. Gritt is backed by Obvious Ventures, Union Square Ventures, First Round Capital, Climactic, Congruent Ventures, and other leading firms.
Role: Robotics System Test Engineer
Location: SF Bay Area (in-person)
About the role
We are looking for a Robotics System Test Engineer to own how we prove our robots are ready, across both the autonomy software and the physical machine. This is not a siloed QA role. You will work at the intersection of perception, planning, controls, and hardware, and you will spend real time outdoors: most of your testing happens in the yard behind our office, where our robots run in genuine sun, wind, dust, and temperature.
You will define the test strategy, build the automation and fixtures that catch regressions before they ship, and lead full-system test campaigns on heavy machines. Your work directly determines whether a one-ton robot is trusted to operate autonomously and whether it does so safely around the people testing it.
What you'll get to work on
  • Own the test strategy for the autonomy stack across perception, planning, manipulation, and the models that run locally on every robot.
  • Define quantitative acceptance criteria for pick-and-place accuracy, cycle time, model performance, safety behavior, and hold releases to them.
  • Lead root-cause analysis on failures that span perception, software, controls, and hardware.
  • Plan and run full-system test campaigns on heavy (~1,000 lb) robots in our yard, across real weather, lighting, dust, and temperature.
  • Design and build mechanical and electrical test fixtures and instrumentation that make results measurable and repeatable.
  • Execute the full range of testing including exploratory and characterization on prototypes, performance and reliability testing, and end-to-end verification against formal requirements.
  • Test across the panel SKUs and conditions the robot must handle in production, from new hardware to changing site and weather conditions.
  • Develop, document, and enforce safety procedures for testing large autonomous machines around people and equipment.
  • Produce clear, data-driven test reports and maintain traceability from requirements through to test execution and results.
  • Investigate field incidents and feed structured findings back into the test suite so the same issue never ships twice.

What we look for
  • M.S/B.S degree in robotics, vision, computer science, mechanical engineering, electrical engineering or other engineering disciplines (or equivalent experience).
  • 3+ years in test, QA, or validation engineering, including significant experience testing robotics, autonomous systems, or other complex physical and embedded products.
  • Skilled in Python and C++, with a track record of building test automation, tooling, and analysis pipelines from scratch.
  • Hands-on hardware testing experience - building fixtures, hardware-in-the-loop rigs, and instrumentation - alongside software testing (CI, regression, simulation)..
  • A rigorous, data-driven approach: you write clear test plans, define quantitative acceptance criteria, and make ship / no-ship calls backed by evidence.
  • Sound safety judgment. You are comfortable working hands-on with heavy machinery outdoors and take procedure seriously.
  • Familiarity with robotics frameworks like ROS2.
  • Should be comfortable taking ownership of tasks with light supervision.
  • Must have excellent problem-solving skills.
  • Legally authorized to work in the United States.

Apply