General Motors

Staff RF Coexistence Engineer (Coex)

General Motors • $134K — $207K *
Sunnyvale, CA 94087In-Person
Manufacturing & Automotive
5 - 7 years of experience
Today
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Job Overview by Ladders

Qualifications

  • M.S. in Electrical Engineering or related field (PhD preferred)
  • 6-10 years of RF/wireless engineering experience with focus on coexistence
  • Strong grasp of multi-radio interference mechanisms
  • Hands-on experience with wireless test equipment like UXM and OTA testing
  • Proven system-level debugging and data-driven analysis skills

Responsibilities

  • Own coexistence performance execution for vehicle systems and features
  • Develop multi-radio coexistence solutions within vehicle architectures
  • Analyze and improve throughput, latency, and radio contention issues
  • Evaluate coexistence behavior in real-world in-vehicle scenarios
  • Collaborate with internal RF, PCB, and firmware teams for system integration
  • Develop coexistence validation plans using various testing methods
  • Lead root-cause investigations for coexistence-related performance issues

Benefits

  • Variety of health and wellbeing benefit programs
  • Options for medical, dental, and vision insurance
  • Retirement savings plan with contributions
  • Tuition assistance programs for further education
  • Employee assistance program and life insurance options
  • GM vehicle discounts for employees
Full Job Description
Job Description

Job Overview

General Motors is transforming into a software-defined, technology-driven automotive company, with a growing emphasis on in-house hardware and RF system design to enable faster innovation, deeper system integration, and improved product quality.

We are seeking a highly skilled Senior RF Coexistence Engineer to support multi-radio performance execution across GM's next-generation product platforms. In this role, you will focus on coexistence behavior, throughput, latency, and system-level performance across cellular, Wi-Fi, Bluetooth, GNSS, UWB, and emerging wireless technologies.

This is a senior individual contributor role that plays a critical part in GM's in-house design (IHD) strategy, embedding coexistence expertise early in design, validation, and integration cycles while working within agile, cross-functional development teams.

Key Responsibilities

Coexistence Execution & Ownership
  • Own coexistence performance execution for assigned systems, features, and vehicle programs
  • Develop and implement multi-radio coexistence solutions within defined vehicle and system architectures
  • Support early design phases by identifying coexistence risks and opportunities aligned with GM's in-house development roadmap
  • Partner with internal design teams to reduce dependency on late-stage supplier fixes
  • Analyze and improve:
    • Throughput degradation
    • Latency, packet loss, and jitter
    • Radio contention and scheduling inefficiencies
  • Evaluate coexistence behavior in real-world, in-vehicle scenarios:
    • Simultaneous radio operation (e.g., Wi-Fi + Bluetooth audio + cellular data)
  • Support system trade-offs balancing performance, power, cost, and use
  • Collaborate closely with internal:
    • RF, antenna, PCB, SoC, and firmware teams
  • Enable faster iteration cycles by connecting:
    • Early simulation
    • Bench and lab validation
    • Vehicle-level testing
  • Support agile development models through incremental learning, fast debug, and early risk retirement


Cross-Functional Technical Integration
  • Influence system design decisions to improve coexistence performance, including:
    • Antenna placement and isolation
    • RF front-end architecture
    • Clocking and aggressor management
  • Collaborate with firmware and software teams on:
    • Coexistence algorithms
    • Scheduling and arbitration mechanisms
    • Frequency hopping and time-domain coordination
  • Act as a technical bridge between hardware realities and protocol-level behavior


Coexistence Testing & Validation
  • Develop and execute coexistence validation plans, including:
    • OTA and conducted test methods
    • Throughput and sensitivity measurement under concurrent radio operation
  • Define and run coexistence test matrices and stress scenarios aligned with vehicle use cases
  • Utilize tools such as:
    • Wireless test systems (UXM, CMX, MT8000A, CMW500)
    • OTA chambers, spectrum/network analyzers, protocol analyzers, and sniffers


Debug & Root-Cause Analysis
  • Lead root-cause investigation of coexistence-related performance issues by:
    • Identifying aggressor / victim interactions
    • Analyzing conducted, radiated, and baseband coupling paths
  • Debug across multiple layers:
    • RF front-end and antenna systems
    • Baseband and firmware behavior
    • System scheduling and software interactions
  • Capture learnings to support reuse and continuous improvement within GM's in-house design ecosystem


Design for Coexistence (DfC)
  • Apply GM-defined design-for-coexistence frameworks, including:
    • PCB layout (grounding, isolation, return paths)
    • Antenna placement and coupling minimization
    • Shielding, filtering, and noise mitigation
    • System-level timing and resource management strategies
  • Support early-stage coexistence modeling and simulation in collaboration with system architects


Technical Leadership
  • Serve as a go-to coexistence subject-matter expert for assigned programs
  • Mentor junior engineers on coexistence fundamentals, testing, and debug techniques
  • Contribute to in-house guidelines, documentation, and repeatable technical practices
  • Provide technical input into architecture reviews, design decisions
  • Be comfortable is dealing with ambiguity, self starter setting objectives aligned with phase of the product development cycle


Required Qualifications
  • M.S. in Electrical Engineering or related field (PhD preferred)
  • 6-10 years of RF/wireless engineering experience with strong emphasis on coexistence (Coex)
  • Strong understanding of:
    • Multi-radio interference mechanisms
    • Wireless protocols (Wi-Fi, Bluetooth, LTE/5G) and their interactions
  • Hands-on experience with:
    • Wireless test equipment (UXM, CMX, MT8000A, CMW500)
    • OTA testing and coexistence validation setups
    • RF simulation tools (CST, HFSS, FEKO)
  • Proven system-level debugging and data-driven analysis skills


Preferred Experience
  • Automotive wireless systems (infotainment, telematics, connected vehicle platforms)
  • Consumer electronics (smartphones, wearables, AR/VR)
  • Experience supporting in-house hardware or platform development teams
  • Familiarity with firmware-driven coexistence algorithms and protocol analyzers


Compensation: The compensation information is a good faith estimate only. It is based on what a successful applicant might be paid in accordance with applicable state laws. The actual base salary a successful candidate will be offered within this range will vary based on factors relevant to the position, as well as geography of the selected candidate.
• The salary range for this role is 134,700 - 207,600
. The actual base salary a successful candidate will be offered within this range will vary based on factors relevant to the position.
• Bonus Potential: An incentive pay program offers payouts based on company performance, job level, and individual performance.
Benefits:
• Benefits: GM offers a variety of health and wellbeing benefit programs. Benefit options include medical, dental, vision, Health Savings Account, Flexible Spending Accounts, retirement savings plan, sickness and accident benefits, life insurance, paid vacation & holidays, tuition assistance programs, employee assistance program, GM vehicle discounts and more.

#LI-JK3

This role is categorized as hybrid. This means the selected candidate is expected to report to a specific location at least 3 times a week {or other frequency dictated by their manager}.The selected candidate will be required to travel

About General Motors

General Motors Company engages in the manufacture and sale of cars and trucks in the United States, China, Brazil, Germany, the United Kingdom, Canada, and Italy. It offers sedans, crossovers, sport utility vehicles, pick-up trucks, coupes, sports/convertibles and hybrid vehicles, hatchbacks/wagons, and vans, as well as mini cars in India. The company also provides parts and accessories, such as iPod and MP3 compatibility, mobility accessories, performance parts, AC parts and services, and merchandise. In addition, it offers vehicle safety, security, and information services. The company provides used vehicles. It offers its products through dealers and distributors. General Motors Company was formerly known as NGMCO, Inc. and changed its name to General Motors Company in July 2009. The company was incorporated in 2009 and is based in Detroit, Michigan. It operates manufacturing facilities in India, the United States, and Canada. General Motors Company operates as a subsidiary of the United States Department of The Treasury. General Motors led global vehicle sales for 77 consecutive years from 1931 through 2007, longer than any other automaker, and is currently among the world's largest automakers by vehicle unit sales. General Motors acts in most countries outside the USA via wholly-owned subsidiaries but operates in China through 10 joint ventures. GM's OnStar subsidiary provides vehicle safety, security, and information services. In 2009, General Motors shed several brands, closing Saturn, Pontiac, and Hummer, and emerged from a government-backed Chapter 11 reorganization. In 2010, GM made an initial public offering IPOs to date and returned to profitability later that year.

General Motors Careers

Join the dynamic team at General Motors, a global leader in automotive innovation and technology. At General Motors, we offer unparalleled job opportunities that propel your career forward while contributing to a legacy of engineering excellence.

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Embark on a career with General Motors to drive the future of mobility. Our team is dedicated to redefining the automotive landscape through innovation and leadership in electric vehicles and sustainable solutions. By joining us, you will be part of a culture that values diversity, teamwork, and continuous professional growth.

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As part of our global workforce, you will collaborate with talented individuals who are passionate about shaping the future of transportation. General Motors offers a variety of career paths in engineering, design, IT, marketing, and more. With over 155,000 employees worldwide, our network provides expansive opportunities for networking and professional development.

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Start your career journey with a General Motors internship, where you can apply your academic knowledge to real-world projects. Our internships provide a robust foundation in the automotive industry, with mentorship from experienced leaders. Full-time employees enjoy a wealth of benefits, including comprehensive health care, retirement plans, and performance bonuses, ensuring that your hard work is rewarded.

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Learn more about General Motors
Size
157,000 employees
Market Cap
$46.9 billion
Industry
Manufacturing & Automotive
Net Income
$6.4 billion
Founded
1908
5 Year Trend
-3.2%
Revenue
$122.4 billion
NASDAQ
GM
* Ladders Estimates

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