RF Induction Systems Engineer Crystal Growth & Melting Equipment

Key Responsibilities RF System Design & Development

• Design and optimize current RF induction heating systems (typically 1-50 kHz range)
• Develop and tune series and parallel resonant circuits for high-power operation
• Specify and integrate RF generators, matching networks, and capacitor banks
• Design and optimize induction coils for thermal profile and coupling efficiency Process & Equipment Engineering
• Support and develop crystal growth melting systems
• Optimize thermal gradients, melt stability, and power delivery
• Integrate RF systems with crystal growth platforms (e.g., CZ, HEM, skull melting)
• Develop process recipes and operating envelopes for different materials Modeling & Simulation
• Perform electromagnetic and thermal simulations (e.g., COMSOL, ANSYS)
• Model coupling efficiency, current distribution, and heating profiles
• Analyze load-dependent impedance behavior and resonance shifts System Tuning & Troubleshooting
• Lead tuning of RF systems under dynamic load conditions
• Diagnose issues related to: + detuning and reflected power + instability and oscillation + coil overheating and inefficiency
• Optimize performance across full process cycle (cold start melt steady-state) Hardware Integration
• Design and review: + coil assemblies + cooling systems (water-cooled copper structures) + bus bars and power delivery systems
• Ensure robust high-current, low-loss electrical connections Testing & Validation
• Develop test plans and validation procedures
• Analyze system performance using: + current/voltage measurements + phase and impedance analysis + thermal diagnostics
• Lead commissioning of new equipment and upgrades Cross-Functional Collaboration
• Work with materials scientists, process engineers, and mechanical teams
• Support scale-up from R D to production systems
• Provide technical leadership and mentorship to junior engineers Required Qualifications
• Bachelor's or Master's degree in Electrical Engineering, Physics, or related field
• 5+ years of experience in RF power systems, induction heating, or high-power electronics
• Strong understanding of: + resonant circuits (series and parallel) + impedance matching + RF power delivery systems
• Hands-on experience with induction heating systems (kHz range preferred)
• Experience with high-temperature or vacuum systems Preferred Qualifications
• Experience with crystal growth systems (CZ, HEM, skull melting, Bridgman)
• Familiarity with reactive oxide or semiconductor materials
• Experience with

COMSOL, ANSYS

Maxwell, or similar tools

Knowledge of:

+ thermal management and cooling design + high-current bus design + vacuum and controlled atmosphere systems ...