Senior RF Electrical Developer

Profound Medical•Mississauga, ON

8d•CA$120,000 - CA$150,000

About The Position

Our mission is to Profoundly change the standard of care by creating a tomorrow where clinicians can confidently ablate tissue with precision; a tomorrow where patients have access to safe and effective treatment options, so they can quickly return to their daily lives. Changing the standard of care is part of our fabric. We are a group of energetic, problem-solvers focused on innovation and looking to change the world. We are changing the paradigm for treating diseases such as prostate cancer by using real-time MR Imaging, thermal ultrasound and close-loop temperature feedback control, to gently ablate the diseased tissue with minimal side effects. If you share our values and want to work in a collaborative results-focused culture and want to make a profound impact in healthcare and your career, here is your chance. General Accountability We are seeking a Senior RF Electrical Developer to lead the design and integration of MRI-compatible medical devices that operate safely and effectively inside the MRI bore. This role focuses on ensuring that electronic systems function reliably in the presence of strong static magnetic fields, rapidly switching gradients, and high-power RF pulses. You will be responsible for developing RF-safe system architectures, mitigating electromagnetic interference, and ensuring compliance with MRI safety standards while enabling high-performance device operation in a highly constrained and challenging environment.

Requirements

7+ years of experience in RF/system design, preferably in MRI-compatible or electromagnetically harsh environments
Strong understanding of RF coupling, shielding, grounding, and filtering techniques
Experience designing systems exposed to high electromagnetic fields and transient interference
Hands-on experience with RF test equipment (VNA, spectrum analyzer, oscilloscope)
Experience with system-level integration and debugging, not just component design
Solid understanding of signal integrity and noise mitigation in sensitive measurement systems

Nice To Haves

Direct experience designing devices used inside MRI scanners
Familiarity with MRI environment challenges: Static magnetic field (B0), Gradient switching (dB/dt effects), RF transmit field (B1) coupling
Experience with RF safety techniques: cable traps, RF chokes, floating designs, optical isolation
Knowledge of ASTM and IEC standards related to MRI safety (e.g., ASTM F2182 for RF heating)
Experience with fiber optic communication to eliminate conductive pathways
Familiarity with low-noise analog front-end design in high-noise environments
Experience minimizing MRI image artifacts from active devices

Responsibilities

Lead the design of MRI-compatible electronic and RF subsystems, including signal paths, filtering, shielding, and grounding strategies
Develop systems that are immune to MRI RF pulses and gradient-induced interference
Design and validate signal generation systems for high powered ultrasound that operate reliably within the MRI environment
Ensure RF safety compliance, including mitigation of induced currents, cable heating, and unintended coupling
Design filtered and shielded interconnects, including cable traps, baluns, and feedthroughs to prevent RF coupling
Perform EMC/EMI analysis and mitigation in the MRI environment (64–300+ MHz depending on field strength)
Collaborate with system and mechanical teams to ensure MR-conditional design, including material selection, cable routing, and enclosure design
Develop and execute test methods for MRI compatibility, including phantom testing, in-bore validation, and artifact evaluation
Analyze and minimize image artifacts caused by device operation
Work closely with clinical and regulatory teams to support MR safety classification (MR Safe / MR Conditional) per standards such as ASTM F2503
Troubleshoot complex system interactions between the device and MRI system
Contribute to system architecture decisions balancing performance, safety, and usability