Senior Mechanical Engineer, Thermal

Helion
Everett, WA
On-site

Who this role is best for

Strong fit for senior mechanical engineers with hands-on experience in thermal and fluids systems who can lead design reviews and manage complex hardware projects.

Best fit for

  • Senior mechanical engineers with 7+ years of full-scope project experience and CAD proficiency
    — “7+ years of professional experience delivering on full-scope engineering projects
  • Candidates with multidisciplinary engineering expertise in thermal, fluids, and structural systems
    — “Hands-on exposure to a variety of engineering disciplines (fluids, mechanical, thermal)
  • Individuals who thrive in a culture prioritizing ownership and delivering hard truths
    — “a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths

Things to consider

  • The role requires a significant on-site commitment at the Everett, WA headquarters
    — “This role is onsite at our headquarters in Everett, WA
  • Candidates should be prepared for rapid build-test-redesign cycles and hands-on implementation
    — “Work hands-on alongside experienced technicians to implement your hardware designs in rapid build-test-redesign loops

How to stand out

  • Highlight your experience in iterative design and requirements definition in your resume
    — “establishing and iterating on requirements
  • Showcase your ability to test and troubleshoot complex hardware systems
    — “Troubleshoot hardware issues as they arise on integrated fusion generators
  • Emphasize your background in 3D CAD software and simulation tools like ANSYS
    — “Design fusion hardware within 3D CAD software (e.g. NX)
  • Demonstrate your capacity to learn from experts and apply first-principles thinking
    — “Experience applying engineering first-principles and method-based thinking to challenging problems
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · TeamLevel · Senior

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • design and test fusion hardware
  • establish and iterate on requirements for thermal, fluids, and structural subsystems
Typical background
7+ years of professional experience in engineeringadvanced experience with CAD software

Skills & requirements

Required

Mechanical EngineeringThermal EngineeringCAD Software (e.g. NX)Engineering First-principlesMethod-based Thinking

Preferred

Fusion EnergyPlasma Physics

Stack & domain

CAD Software (e.g. NX)AnsysFluidsMechanicalThermalLeadershipProblem-solvingTeamworkEngineeringFusion Power

About the role

Original posting from Helion via Ashby

About Helion

We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.

Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.

This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.

What You Will Be Doing:

You will own thermo-mechanical hardware designs for Helion's fusion generator. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. This role is onsite at our headquarters in Everett, WA.

You Will:

  • Own and understand designs related to thermal, fluids, and structural subsystems – including establishing and iterating on requirements.
  • Learn from historical engineering approaches, design novel hardware, and test your solutions
  • Design fusion hardware within 3D CAD software (e.g. NX)
  • Perform analysis (1D, 2D, 3D) with in-house and out-of-house tools (e.g. ANSYS) and hold design reviews to gather feedback and iterate to a fully functioning system
  • Learn from experts to expand your engineering skillset and domain knowledge
  • Work hands-on alongside experienced technicians to implement your hardware designs in rapid build-test-redesign loops
  • Troubleshoot hardware issues as they arise on integrated fusion generators

Required Skills:

  • Bachelor's degree in engineering
  • 7+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)
  • Experience applying engineering first-principles and method-based thinking to challenging problems
  • Hands-on exposure to a variety of engineering disciplines (fluids, mechanical, thermal)
  • Advanced experience with CAD software (e.g. NX, Solidworks)

#LI-Onsite, #LI-KL1

Benefits

Our total compensation package includes benefits, including but not limited to:

  • Medical, Dental, and Vision plans for employees and their families
  • 31 Days of PTO (21 vacation days and 10 sick days)
  • 10 Paid holidays, plus company-wide winter break
  • Up to 5% employer 401(k) match
  • Short term disability, long term disability, and life insurance
  • Paid parental leave and support (up to 16 weeks)
  • Annual wellness stipend

Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.

Source: Helion careers (Ashby)

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