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Modem System Test Engineer Jobs in California (NOW HIRING)

Agtonomy

System Test Engineer

South San Francisco, CA · On-site

$100K - $140K/yr

About the Role We are looking for an enthusiastic System Test Engineer to join our QA team. You will be responsible for ensuring the continued success of Agtonomy's products as we scale our fleet of ...

Zoox

System Test Engineer

Foster City, 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

Foster City, 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 ...

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 ...

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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 July 2026, with employment types broken down into 90% Full Time, 6% Part Time, and 4% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution.

Modem System Test Engineer

THE TILTED CIRCLE LLC

Foster City, CA • On-site

Other

This job post has expired today. Applications are no longer accepted.

Job description

We are hiring an experienced Modem System Test Engineer for an onsite opportunity in Foster City, CA.

Required Skills:

  • 7-10 years of Modem System Testing experience
  • Strong experience in Telematics Domain
  • Expertise in Modem Log Analysis & Debugging
  • Hands-on experience with 4G LTE, 5G NR, Wi-Fi, GNSS, Ethernet & IP
  • Experience with System Validation, Test Case Development & Execution
  • Strong Root Cause Analysis & Issue Triaging skills
  • Experience with Python and TTCN scripting
  • Hands-on experience using Keysight or Rohde & Schwarz test equipment/network emulators
  • Experience collaborating with firmware teams and modem vendors
  • LinkedIn Profile is Mandatory

Location: Foster City, CA (Onsite)

If you''re interested, please share your updated resume along with your LinkedIn profile.

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