Radio System Engineer

About the role

MediaTek, a global fabless semiconductor company, is looking for a customer-facing Radio System Engineer in San Jose, CA. The role owns RF performance for wireless products across the full product lifecycle, from early planning through factory ramp, performance tuning and field trials. It acts as the technical point of contact for validation, algorithm, software and regulatory teams, and covers cellular (4G/5G) and connectivity (Wi-Fi/Bluetooth) radio systems.

Key responsibilities

• Support engineering issues across planning, factory, performance and field trials.
• Design, coordinate and run experiments for issue analysis and solution verification.
• Design, bring up and troubleshoot RF measurement setups.
• Lead debugging, tuning and optimization to meet performance and conformance targets.
• Collect, analyze and report DoE findings with root causes and recommendations.
• Partner with validation teams on test plans, reproduction and verification.
• Collaborate with algorithm and software teams to debug at the system level.
• Work with regulatory teams to ensure compliance with regional requirements (e.g. FCC, CE) and 3GPP/IEEE standards.
• Document findings and share lessons learned for future products.

Required profile

• Bachelor's degree or above in Electrical Engineering or a related field.
• 2+ years of industry experience in RF / radio system engineering.
• Strong Design of Experiments (DoE) skills, including statistical analysis of results.
• Experience with 4G/5G cellular and/or Wi-Fi/Bluetooth radio systems.
• Solid understanding of RF fundamentals and impairments (link budget, linearity, noise, spurious emissions, harmonics, intermodulation).
• Experience with 3GPP or IEEE conformance test standards.
• Proven ability to debug complex issues across hardware, software and system boundaries.

Required skills

• Proficiency with RF test equipment (spectrum/signal analyzers, vector signal generators, network analyzers, power meters, oscilloscopes, 5G/cellular testers).
• Test automation, data processing and analysis.
• Preferred: customer support or field trial experience, Envelope Tracking, DPD and PA linearity, regulatory certification (FCC, CE), modem-level debugging, and AI-assisted log analysis.

What we offer

• Salary range of $111,000-$193,850 per year, with possible performance bonus and incentive programs.
• Health, life and disability insurance, savings plan, paid holidays, sick leave, vacation, parental leave, 401K and more.