Staff RF Coexistence Engineer (Coex)

About the role

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.

Responsibilities

• 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
• 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

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