
Real job — pulled straight from Thea Energy’s careers page · Verified October 11, 2026 · No reposts.
Job description
Thea Energy is hiring a Senior Mechanical Engineer — a full-time, based in Kearny, NJ role ($110k–$180k). Apply directly on Thea Energy's careers page below.
Senior Mechanical Engineer
Team: Mechanical Engineering
Location: Kearny, NJ
Commitment: Full-time
Workplace Type: onsite
Thea Energy is looking for experienced, highly motivated mechanical engineers to join its rapidly growing team. Mechanical engineers will have ownership of the mechanical design and development of primary and secondary components and subsystems in the development of Thea Energy’s stellarator fusion systems. You will be responsible for structural and thermo-mechanical design, manufacturability, development, and commissioning of these systems. The Thea Energy team is comprised of driven, creative, and fun individuals passionate about solving complex problems.
Key Responsibility Areas:
- Have ownership of the design and development of primary and secondary mechanical fusion components and subsystems
- Work with core system-level development teams to define prototyping requirements
- 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 the implementation of tooling and manufacturing
- Design and execute qualification testing
- Track and report results and progress against program goals and milestones
- Communicate and collaborate with internal and external stakeholders
- Mentor junior engineers
Ideal Experience & Skillsets:
- Minimum of a bachelor’s degree in mechanical engineering, aerospace engineering, physics, or related fields
- Minimum of 5 years of experience
- Extensive experience as a lead designing, building, and commissioning custom systems
- Experience in mechanical engineering using CAD software (e.g. Solidworks, CATIA, NX, etc.)
- Management of complex assemblies with multiple contributors
- Experience specifying machining, welding, and/or fabrication requirements
- Ability to mentor junior engineers in methods to decompose complex problems, and review that work
- Ability to take initiative and guide the design and analysis of complex components and systems with the aid of peers and team members
- Ability to execute and flourish in a fast-paced, rapidly changing environment
- Familiarity with GD&T (ASME Y14.5) & Drawing Standards
- Experience owning systems or complex sub-systems
- Comfortable working to aggressive deadlines
- Exceptional work ethic
- Strong team member with clear communication and collaboration skills
- Innate desire to learn, innovate, and critique ideas including one’s own
Company Benefits
- Salary Range $110,000- $180,000
- Comprehensive health benefits (e.g. medical/dental/vision)
- Employee equity stock options
- 20 days PTO
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Frequently asked questions
What is the salary for Senior Mechanical Engineer at Thea Energy?
The estimated salary range for Senior Mechanical Engineer at Thea Energy is $110,000 - $180,000 USD per year.
What skills are required for Senior Mechanical Engineer at Thea Energy?
The required skills for Senior Mechanical Engineer at Thea Energy include: Mechanical Engineering, SolidWorks, CATIA, ANSYS, Welding, Machining.
What is the seniority level for Senior Mechanical Engineer at Thea Energy?
Senior Mechanical Engineer at Thea Energy is a Senior level position.
How do I apply for Senior Mechanical Engineer at Thea Energy?
You can view the full description and apply for Senior Mechanical Engineer at Thea Energy on EchoJobs: https://echojobs.io/job/thea-energy-senior-mechanical-engineer-rdlfq.