Staff RF Coexistence Engineer (Coex)

Description

Our Mission:
At General Motors, our product teams are redefining mobility. Through a human-centered design process, we create vehicles and experiences that are designed not just to be seen, but to be felt. We’re turning today’s impossible into tomorrow’s standard —from breakthrough hardware and battery systems to intuitive design, intelligent software, and next-generation safety and entertainment features.

Every day, our products move millions of people as we aim to make driving safer, smarter, and more connected, shaping the future of transportation on a global scale.

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.

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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 <25% for this role.

About GM

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We encourage interested candidates to review the key responsibilities and qualifications for each role and apply for any positions that match their skills and capabilities. Applicants in the recruitment process may be required, where applicable, to successfully complete a role-related assessment(s) and/or a pre-employment screening prior to beginning employment. To learn more, visit How we Hire.

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