Referso Jobs

Sr Principal Signal Integrity Engineer

FormFactor Inc. · Posted Jun 16, 2026

Open

Beaverton, Oregon, United States
Senior
$116K–$152K per year
8+ years

Sr Principal Signal Integrity Engineer

FormFactor Inc. · Posted Jun 16, 2026

Open

Beaverton, Oregon, United States
Senior
$116K–$152K per year
8+ years

Principal R&D Engineer, RF & Implant Power

Synchron Inc. · Posted Nov 6, 2026

Open

San Diego, California, United States
On-site
Full-time · Principal
$160K–$200K per year
8–12 years

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Lead the RF and power electronics design for Synchron's next-generation implantable electronics, overseeing wireless telemetry, antenna, inductive power, and battery systems.

Compensation

$160k - $200k/year

Responsibilities

Define implant wireless architecture and select transceiver ICs
Derive and maintain link budgets and design RF front ends
Design and integrate implant and external antennas
Lead regulatory and wireless coexistence testing
Design inductive power link and power management

Requirements

BS in electrical engineering or related discipline
MS preferred
Nice to have: COMSOL Multiphysics expertise
Nice to have: high-throughput radio integration
Nice to have: wireless coexistence design

Skills

RF design antenna design inductive power transfer Li-ion battery charging EM simulation (COMSOL, HFSS, CST)

RF Passive Design Engineer

Apple · Posted Nov 5, 2026

Open

San Diego, California, United States
On-site

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Chip Passive Design Engineer responsible for designing on-chip inductors, transformers, capacitors, transmission lines, filters, phase shifters, and couplers for Apple mobile devices.

Responsibilities

Design electrical and physical EM/microwave components and circuits
Architect and develop future RF on-chip passives with multi-functional teams
Orchestrate design to tape-out process

Requirements

Bachelor's degree
Nice to have: Deep knowledge of electromagnetic theory
Nice to have: Microwave engineering
Nice to have: Antenna engineering
Nice to have: On-wafer measurement

Skills

EM simulation HFSS EMX Momentum VNA TDR LCR meters RF design Packaging

EM simulation jobs

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