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Modem Engineer Jobs in California (NOW HIRING)

Qualcomm

Staff Engineer

San Diego, CA · On-site

$148K - $222K/yr

In this role, you will contribute to PHY layer modem firmware. TenX DSP low level ASM type optimized SIMD instruction set programming, Modem signal processing for Tx and Rx baseband chain, Modem ...

KBR

Senior SATCOM Systems Engineer

San Diego, CA

$125/hr

Title: Senior SATCOM Systems Engineer Belong. Connect. Grow. with KBR! KBR's National Security ... Analyze and define modem and RF subsystem architectures for SATCOM or tactical radio systems ...

Saige Partners

Wireless Test Engineer

San Diego, CA · On-site

$65 - $80/hr

We are seeking a Wireless Modem Test Engineer to support the validation, testing, and optimization of 5G/4G modem technologies This role will focus on interoperability testing (IOT), feature ...

Alten

Modem Field Engineer

Santa Clara, CA · On-site

Company Description We are an product Engineering and IT Services base company. * Exposure to commercial field test and data analysis tools for wireless telephony product verification Handset test ...

Alten

Modem Field Engineer

Santa Clara, CA

Company Description We are an product Engineering and IT Services base company. * Exposure to commercial field test and data analysis tools for wireless telephony product verification Handset test ...

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All JobsModem Engineer JobsModem Engineer Jobs in California

Modem Engineer information

See California salary details

$37.5K

$114.3K

$189K

How much do modem engineer jobs pay per year?

As of Jul 4, 2026, the average yearly pay for modem engineer in California is $114,347.00, according to ZipRecruiter salary data. Most workers in this role earn between $81,900.00 and $149,500.00 per year, depending on experience, location, and employer.

What are some typical challenges faced by Modem Engineers when integrating new wireless technologies?

Modem Engineers often encounter challenges such as ensuring compatibility between new wireless technologies and existing hardware, managing signal interference, and optimizing performance across different network environments. They must also stay updated with rapidly evolving standards, like 5G or Wi-Fi 6, and work closely with cross-functional teams, including firmware developers and hardware designers. Effective troubleshooting and continuous testing are essential parts of overcoming these challenges and delivering robust modem solutions.

What is a Modem Engineer?

A Modem Engineer is a professional who designs, develops, tests, and maintains modem technologies, which are essential for enabling communication between devices over networks such as cellular, Wi-Fi, and wired systems. They work on the physical layer and protocol stack, ensuring data is transmitted efficiently and reliably. Modem Engineers collaborate with hardware and software teams to optimize performance, troubleshoot issues, and implement new features, often for smartphones, IoT devices, and networking equipment.

What is the difference between Modem Engineer vs Network Engineer?

AspectModem EngineerNetwork Engineer
CredentialsBachelor's in Electrical/Telecommunications Engineering, certifications like Cisco CCNABachelor's in Computer Science, Networking, or related fields; certifications like Cisco CCNP
Work EnvironmentDesigning, testing, and troubleshooting modems and communication hardwareDesigning, implementing, and managing network infrastructure
Industry UsageTelecom companies, hardware manufacturersIT firms, service providers, large organizations

While both roles involve networking technology, a Modem Engineer focuses on developing and maintaining modem hardware and firmware, whereas a Network Engineer manages overall network infrastructure and connectivity. Both roles require technical certifications and work in related environments, but their core responsibilities differ significantly.

What are popular job titles related to Modem Engineer jobs in California? For Modem Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching Modem Engineer jobs in California look for? The top searched job categories for Modem Engineer jobs in California are:
What cities in California are hiring for Modem Engineer jobs? Cities in California with the most Modem Engineer job openings:
Modem Engineer jobs near you
Modem Chipset Lab Test Engineer

Modem Chipset Lab Test Engineer

BTI Solutions

San Diego, CA • On-site

Full-time

Posted 17 days ago

Job description

Modem Chipset Lab Test EngineerJob DescriptionAbout the Role:
We are seeking a Mobile Lab Test Engineer to support 5G/LTE and NTN (Non-Terrestrial Network) / Satellite validation in controlled lab environments. This role focuses on RF testing, protocol validation, log analysis, and system integration using industry-standard test equipment and tools.
You will work closely with R&D and carrier teams to validate device performance, network behavior, and feature functionality across 3GPP-based cellular and satellite systems.

Key Responsibilities

  • Perform lab-based testing for 5G NR, LTE, 3G, and NTN/satellite networks
  • Execute RF, protocol, and performance testing (throughput, latency, call scenarios)
  • Set up and configure lab test environments using RF equipment and network simulators
  • Operate and manage test systems and tools:
    • Spirent, Keysight, R&S (Rohde & Schwarz), Anritsu, Anite
  • Capture and analyze logs using QXDM, QPST, XCAL/XCAP, Shannon DM
  • Troubleshoot VoLTE/VoNR, data connectivity, signaling, and protocol issues
  • Perform protocol stack analysis aligned with 3GPP standards
  • Validate software/modem updates, patches, and new feature implementations
  • Conduct packet-level analysis using Wireshark (TCP/IP, UDP)
  • Develop and execute test plans and test cases (devices, configurations, KPIs)
  • Document results and produce clear technical reports
  • Collaborate with R&D, QA, and carrier labs to resolve defects and improve performance
  • Support field testing activities as needed

Required Qualifications

  • Bachelor's degree in Telecommunications, Electrical Engineering, Computer Science, or equivalent experience
  • Hands-on experience in lab testing / RF testing / telecom testing
  • Strong knowledge of 5G NR, LTE, WCDMA/UMTS, GSM
  • Working knowledge of NTN / satellite communications concepts (LEO/GEO, latency, coverage)
  • Experience with RF test equipment (Spirent, Keysight, R&S, Anritsu, Anite)
  • 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 or Direct-to-Device (D2D)
  • Knowledge of 5G protocol stack (PHY, MAC, RRC, NAS signaling)
  • Experience in carrier certification or device validation labs
  • Familiarity with Wireshark, GNSS/GPS, RF propagation concepts
  • Basic scripting (Python, ADB, Shell) for test automation
  • Experience with Wi-Fi, Bluetooth coexistence testing

Work Environment

  • Primarily lab-based testing with controlled network and RF conditions
  • Hands-on work with RF equipment, network simulators, and mobile devices
  • Occasional extended hours or weekend testing based on project needs

Requirements

  • Ability to work in a lab environment with test equipment and hardware setups
  • Basic understanding of system integration and test configuration management
$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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