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
...