Senior HTS Cryogenics Engineer — Fusion Magnet Systems

Hitachi, Ltd.; Kearny (NJ); Híbrido; USD 140.000 - 180.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Comprehensive health benefits

Employee equity stock options

20 days PTO

Descripción de la vacante

Thea Energy is seeking an experienced Senior HTS Magnet Cryogenics Engineer to lead the design and optimization of cryogenic cooling for HTS magnet systems. This role bridges magnet performance, cooling circuits, and thermal isolation to deliver reliable high‑field magnets.

The position requires 8+ years in cryogenic engineering and a strong background in HTS/LTS systems, vacuum tech, and cryogenic testing.

Formación

• 8+ years of dedicated professional experience in cryogenic engineering, specifically applied to superconducting magnet systems (HTS preferred; LTS with strong HTS understanding is considered).
• Bachelor’s or master’s degree in mechanical/ aerospace/ applied physics or related field (Ph.D. preferred).
• Deep expertise in vacuum technology, and low-temperature material properties.
• Proven experience in cooling superconducting magnets – MRI, accelerators or fusion systems.
• Proven experience with cryogenic refrigeration systems (Gifford-Momaghan, Pulse Tube, or Stirling cryocoolers or large cryoplants).
• Proficiency in thermal simulation software (ANSYS, COMSOL, or Thermal Desktop) and CAD systems (SolidWorks or NX).
• Practical laboratory experience with cryogens (LN2, LHe), vacuum leak detection, and sensor integration (cernox, thermocouples).

Responsabilidades

• Design, model, and integrate cryogenic cooling systems (conduction-cooled, cryo-fluid loops, or liquid helium/nitrogen systems) for HTS magnet assemblies.
• Perform thermal, fluid, and structural FEA modeling (e.g., ANSYS, COMSOL) to optimize temperature profiles, cooling margins, and quench behavior.
• Select, specify, and procure cryogenic hardware, including cryocoolers, thermal straps, current leads, vacuum vessels, and instrumentation.
• Lead cryogenic testing, commissioning, and validation of HTS magnet prototypes from 20K up to 77K environments.
• Troubleshoot thermal leaks, vacuum degradation, and cryogenic system integration issues during test campaigns.
• Mentor junior engineers and collaborate directly with magnet designers, electrical engineers, and manufacturing teams.

Conocimientos

Cryogenic engineering

HTS magnets

Thermal analysis

Vacuum technology

Cryogenic instrumentation

Educación

Bachelor's or Master's in Mechanical Engineering or related; PhD preferred

Herramientas

ANSYS

COMSOL

Thermal Desktop

SolidWorks

NX

Descripción del empleo

Thea Energy is seeking an experienced Senior HTS Magnet Cryogenics Engineer to lead the design and optimization of cryogenic cooling for HTS magnet systems. This role bridges magnet performance, cooling circuits, and thermal isolation to deliver reliable high‑field magnets.

The position requires 8+ years in cryogenic engineering and a strong background in HTS/LTS systems, vacuum tech, and cryogenic testing.