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Modem System Test Engineer Jobs in California (NOW HIRING)

Zoox

Autonomy System Test Engineer

Foster City, CA

$143K - $177K/yr

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 ...

Zoox

Autonomy System Test Engineer

Foster City, CA · On-site

$143K - $177K/yr

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 ...

Zoox

Autonomy System Test Engineer

Foster City, CA · On-site

$143K - $177K/yr

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 ...

Intuitive

Senior System Test Engineer

Sunnyvale, CA

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 ...

Nvidia

Senior 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.

Protingent

Wireless Test Engineer

San Diego, CA · On-site

$70 - $80/hr

Job Title : Wireless Test Engineer Position Description : Protingent Staffing has an exciting ... Modem Power measurement and benchmarking. * Work-related travel to support lab, field, or IOT ...

True Anomaly

Mechanical Test Engineer

Long Beach, CA

$125K - $155K/yr

You will work closely with mechanical design engineers, systems engineers, and production teams to ... In this role, you will develop test plans, execute mechanical system tests, design and build test ...

Qualcomm

System Level Test Engineer

San Diego, CA · On-site

... and modem chipsets at various operating conditions. Work will also include working with team ... test sequencers. * Familiarity with source control systems such as Perforce or Git. * Programming ...

Qualcomm

System Level Test Engineer

San Diego, CA · On-site

... and modem chipsets at various operating conditions. Work will also include working with team ... test sequencers. * Familiarity with source control systems such as Perforce or Git. * Programming ...

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Showing results 1-20

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 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 Chipset Field Test Engineer

Modem Chipset Field Test Engineer

BTI Solutions

Irvine, CA

Full-time

Posted 7 days ago

Job description

Modem Chipset Field Test EngineerJob DescriptionLocation: [Irvine CA] (Remote / Field-Based)
Travel: up to 15%
Job Type: Full-Time
About the Role
We are seeking a Mobile Field Test Engineer to support 5G/LTE and NTN (Non-Terrestrial
Network) / Satellite testing in real-world environments. This role focuses on end-to-end
validation, log analysis, and troubleshooting across terrestrial and satellite (LEO/GEO, Direct-to-
Device) networks in collaboration with R&D, QA, and carrier teams.

Key Responsibilities

  • Perform field/drive testing for 5G NR, LTE, 3G, and NTN/satellite networks
  • Execute RF, mobility, and data performance testing (throughput, latency, call scenarios)
  • Validate handover between cellular and satellite (NTN) networks
  • Capture and analyze logs using QXDM, QPST, XCAL/XCAP, Shannon DM
  • Troubleshoot VoLTE/VoNR, data connectivity, and network performance issues
  • Develop and execute test plans (routes, devices, KPIs, network conditions)
  • Perform packet analysis using Wireshark (TCP/IP, UDP)
  • Validate software/modem updates and feature enhancements
  • Document results and deliver clear technical reports
  • Configure and maintain test devices, SIM/eSIM, and test environments
  • Collaborate with carrier labs, OEMs, and chipset teams for issue resolution

Required Qualifications

  • Bachelor's degree in Telecommunications, Electrical Engineering, Computer Science, or equivalent experience
  • Hands-on experience in mobile field testing / wireless / telecom testing
  • Strong knowledge of 5G NR, LTE, WCDMA/UMTS, GSM
  • Working knowledge of NTN / satellite communications (LEO/GEO, latency, coverage)
  • Experience with log analysis tools (QXDM, QPST, XCAL, Shannon DM or similar)
  • Understanding of network protocols (TCP/IP, UDP, OSI model)
  • Experience with Android device testing and mobile software validation
  • Familiarity with VoLTE/VoNR, data testing, and KPI validation
  • Proficiency in Microsoft Office for reporting
  • Strong analytical and troubleshooting skills

Preferred Qualifications

  • Experience with 3GPP Release 17+ NTN standards
  • Hands-on exposure to Direct-to-Device (D2D) satellite connectivity
  • Understanding of 5G protocol stack (PHY, MAC, RRC, NAS signaling)
  • Experience in carrier certification or satellite communication testing
  • Knowledge of GNSS/GPS, RF propagation, and mobility scenarios
  • Familiarity with automation/scripting (ADB, Python, Shell)
  • Experience with Wi-Fi, Bluetooth coexistence testing

Work Environment

  • Combination of field testing (drive/walk testing) and lab validation
  • Testing may include outdoor, remote, or limited-connectivity environments
  • Requires travel (up to 15%) based on project scope
  • May require extended hours or weekend work for test cycles and deployments
  • Hands-on work with mobile devices, RF equipment, and satellite-enabled hardware

Requirements

  • Valid driver's license and ability to travel to test locations
  • Ability to work in field environments and handle test equipment
$24.00 - $100.00Why work at BTI?

We're committed to creating a workplace where employees feel valued, supported, and empowered to grow. Our team benefits from competitive compensation, comprehensive health and wellness offerings, and opportunities for professional development. We are proud to be an equal opportunity employer and make all employment decisions without regard to race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, genetic information, veteran status, or any other legally protected status.

We comply with all applicable federal, state, and local employment laws, including those related to fair hiring practices, pay transparency, workplace safety, and reasonable accommodations. We are dedicated to maintaining an inclusive environment where everyone has the opportunity to succeed and contribute meaningfully.

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