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Forge Atomics

Factory-built water-cooled nuclear reactors

Lead Engineer - Power Conversion

Full-Time
$140k - $190k/yr
Mid
Bachelor's
El Segundo, CA, USA
In PersonBased in the South Bay area of Los Angeles County; relocation required if not already local. Full-time in-office work required.
Mechanical EngineeringDesign Engineering
No H1B Sponsorship

About the job

Requirements
  • Bachelor's degree in mechanical engineering or a related technical discipline.
  • At least 3 years of engineering experience designing, analyzing, or building mechanical hardware.
  • At least 1 year of direct leadership experience leading engineers.
Responsibilities
  • Provide end-to-end ownership of power conversion system delivery for Ember Mini, Forge's subscale non-nuclear prototype.
  • Deliver the same ownership at full scale for Ember, Forge's nuclear power plant, designing the system to be produced and deployed at a high rate.
  • Drive conceptual design, architecture trades, and first-order sizing.
  • Develop design requirements where definition is lacking.
  • Perform in-depth first-principles analysis, including detailed system models, to assess and optimize the system design.
  • Optimize development speed, cost, and system complexity.
  • Design and execute development, acceptance, and qualification testing.
  • Work with vendors to procure key systems such as the steam turbine.
  • Partner with the production and site deployment teams to ensure the system can be manufactured and delivered at a high rate.
  • Recruit, build, and lead a multi-disciplinary team of engineers to deliver the product.
Desired Qualifications
  • Bring multiple disciplines together to solve problems, assess risk, and make design and development decisions with incomplete data.
  • Work effectively in a fast-paced, autonomously driven, and demanding atmosphere.
  • Demonstrate self-motivation, multitasking, organizational, communication, and documentation skills.
  • Demonstrate accountability and integrity.
  • Show rapid growth through successive positions of increasing responsibility, quickly getting up to speed, and accomplishing something meaningfully difficult early in a career.

About the company

Forge Atomics designs and builds factory-built, water-cooled nuclear fission reactors to provide reliable, carbon-free baseload power. Its core product is the Ember 25 MWe reactor, with a subscale Ember Mini prototype planned before moving to full-scale deployment. The reactors are manufactured in a factory setting, using proven water-cooled reactor technology with decades of operating experience, and then shipped as modules to site where they are installed, commissioned, and operated. The company aims to lower costs and speed deployment by using mature supply chains and a mass-production approach instead of on-site, bespoke construction. Its safety approach relies on passive safety features designed to make accidents physically unlikely. The ultimate goal is to offer safe, scalable nuclear power that complements or replaces intermittent renewables, improving energy security and reducing environmental impact.

Company Size

N/A

Company Stage

N/A

Total Funding

N/A

Headquarters

N/A

Founded

N/A

Simplify Jobs

Simplify's Take

What believers are saying

  • ANS reported Forge’s 2026 Launch Pad selection, validating momentum with nuclear-industry gatekeepers.
  • Forge’s September 2026 site positions Ember for data centers and grid buyers seeking firm power.
  • El Segundo hiring for engineering managers and interns signals active buildout, not paper-company theater.

What critics are saying

  • NRC licensing for a factory-built reactor can consume years before first revenue.
  • A 2026 intern posting still emphasizes export controls and full-time office work, signaling heavy compliance burden.
  • If Ember Mini misses milestones, 300 MWe factory economics collapse before the first reactor sale.

What makes Forge Atomics unique

  • Forge Atomics’ 25 MWe Ember uses factory-built, shippable PWR modules, not bespoke sites.
  • Factory 1 targets 300 MWe yearly output, a manufacturing model rare in nuclear.
  • Ember uses proven uranium dioxide fuel and natural-circulation passive safety, lowering technical novelty risk.

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Benefits

  • Health Insurance
  • Vision Insurance
  • Dental Insurance
  • 401(k) Retirement Plan
  • Stock Options
  • Employee Stock Purchase Plan
  • Paid Vacation
  • Paid Parental Leave
  • Paid Sick Leave