Staff RF Engineer, Coexistence & Desense

Job 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 and desense performance for assigned systems

• 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,