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Mechanical Engineer III

Thea Energy - Kearny, NJ, United States - In-office - posted 2026-10-13

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Salary: USD 85,000 - 150,000 / annual

Thea Energy is commercializing fusion energy through a novel stellarator design that uses computer-controlled planar coil arrays instead of complex modular magnets. The company is seeking experienced mechanical engineers to own the mechanical design and development of primary and secondary components and subsystems for its fusion systems. In this role, you will be responsible for structural and thermomechanical design, manufacturability analysis, development, and commissioning of fusion components. Key responsibilities include: - Design and develop primary and secondary mechanical fusion components and subsystems - Produce mechanical engineering designs, drawings, specifications, and parameters from first principles with appropriate tolerances for vendor quoting and manufacturing - Design tooling for assembly - Perform thermal, structural, and electromagnetic analysis and simulation using Ansys and COMSOL - Incorporate design for manufacturing principles and support first builds - Support implementation of tooling and manufacturing processes - Design and execute qualification testing - Communicate and collaborate with internal and external stakeholders Thea Energy's team comprises driven, creative individuals passionate about solving complex problems in the energy sector. This is a fast-paced environment where you'll have significant ownership and the opportunity to work on cutting-edge fusion technology. REQUIREMENTS: - Minimum bachelor's degree in mechanical engineering, aerospace engineering, physics, or related field - Experience designing, building, and commissioning custom systems - Proficiency with CAD software (Solidworks, CATIA, NX, or equivalent) - Experience specifying machining, welding, and/or fabrication requirements - Ability to decompose and solve complex problems - Ability to take initiative and guide design and analysis of complex components and systems with peer support - Ability to execute and flourish in fast-paced, rapidly changing environment - Familiarity with GD&T (ASME Y14.5) and drawing standards - Comfortable working to aggressive deadlines - Strong team member with clear communication and collaboration skills - Exceptional work ethic Note: The posting states it is not necessary to meet all skillsets outlined; candidates are encouraged to apply and explain why they would be a great fit.

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