Senior RF Hardware Engineer: Wireless Subsystems

Hark; San Jose, Northern (CA, KY); Hybrid; USD 120,000 - 300,000; Full time

Job summary

Hark is an artificial intelligence company building advanced, personalized intelligence. We are seeking an RF Hardware Engineer to design, integrate, validate, and certify wireless subsystems (cellular, Wi-Fi, Bluetooth, GPS/GNSS, NFC/UWB) in our consumer hardware products.

You will own RF performance from architecture through mass production, collaborating with antenna, mechanical, firmware and manufacturing teams, as well as external vendors, test labs, and carriers.

Qualifications

• BS in Electrical Engineering or related field with 5+ years RF hardware design experience.
• Hands-on design experience with at least one radio technology (5G NR/LTE, Wi‑Fi, Bluetooth, GNSS, NFC, or UWB).
• Strong RF fundamentals: transmission lines, impedance matching, RF front-end architecture.
• Proficiency with RF lab equipment (VNA, spectrum analyzers, signal generators, OTA chambers).
• Experience taking a wireless product through a full development cycle to mass production.

Responsibilities

• Own RF hardware design for one or more radios: architecture definition, RF front-end line-up design and budget analysis.
• Review and sign off on PCB/flex layouts, RF routing, impedance control, grounding, shielding, and isolation strategies.
• Develop and execute validation and characterization test plans: Tx/Rx measurements, OTA performance, desense, and multi-radio coexistence; analyze results and drive design optimization.
• Lead RF failure analysis at system level; identify root cause and propose corrective actions.
• Assess and mitigate platform-level coexistence and interference issues.
• Drive factory RF calibration and test station bring-up; define test limits and support yield and correlation analysis.
• Own regulatory and carrier certification: plan and support FCC/ISED/CE RED, PTCRB/GCF testing, SAR/RF exposure, and carrier acceptance programs.

Skills

RF design

Circuit design

PCB/EMI

RF lab equipment

Mass production experience

Regulatory knowledge

Education

BS in Electrical Engineering

MS in Electrical Engineering

Tools

Vector Network Analyzers

Spectrum Analyzers

OTA chambers

RF simulation tools

Job description

Hark is an artificial intelligence company building advanced, personalized intelligence. We are seeking an RF Hardware Engineer to design, integrate, validate, and certify wireless subsystems (cellular, Wi-Fi, Bluetooth, GPS/GNSS, NFC/UWB) in our consumer hardware products.

You will own RF performance from architecture through mass production, collaborating with antenna, mechanical, firmware and manufacturing teams, as well as external vendors, test labs, and carriers.