Full-Time

Mechanical Engineer

Professional Engineer

Posted on 9/25/2025

General Matter

General Matter

11-50 employees

Uranium extraction, conversion, and enrichment services

Compensation Overview

$90k - $175k/yr

+ Stock Options

Los Angeles, CA, USA

In Person

Category
Mechanical Engineering (2)
,
Required Skills
AutoCAD
Requirements
  • Bachelor's degree in mechanical engineering or similar discipline
  • 8+ years of industry experience
  • Professional Engineer (PE) license is required
  • Experience working with HVAC systems
  • Proficiency in AutoCAD, Revit, and Bluebeam
  • Ability to work extended hours and weekends as necessary
Responsibilities
  • Own design and analysis of mechanical systems including HVAC systems, central plant design (chillers, boilers, heat exchangers), and distribution sizing (ductwork, piping)
  • Prepare design packages up to Permit level in Revit
  • Collaborate with structural, architectural, electrical, and chemical engineers to design and integrate safe and performant mechanical solutions
  • Prepare and review code-compliant designs up to permit level, create comprehensive drawing sets (Revit/AutoCAD), and produce calculations, specifications, and technical reports for design validation
  • Contribute to project concept development, feasibility studies, and scope definition, delivering mechanical solutions that meet performance, cost, and schedule goals
Desired Qualifications
  • Evidence of exceptional ability (prior projects, portfolio of work, completed products, etc)
  • Experience in a fast-paced engineering environment or a highly technical role requiring a resourceful, entrepreneurial approach to complete tasks within tight timeframes or budget constraints
  • Working knowledge of power coordination and arc flash
  • Experience at a consulting firm
  • Computational fluids knowledge (CFD) is a plus
  • Experience developing custom details to support unique facility design conditions
  • Experience on large scale, mission critical construction projects
  • Experience with local/state code compliance

General Matter provides domestic uranium enrichment services to power plants and government entities, producing LEU and HALEU for nuclear reactors. It handles the full fuel cycle—from uranium extraction through conversion and enrichment—to deliver fuel that supports energy production and national energy security. The company differentiates itself with a focus on domestic production and a leadership team from nuclear, technology, and finance to improve reliability and urgency, reducing dependence on international sources. Its goal is to support the United States’ nuclear power capacity by supplying secure, affordable enriched uranium for reactors and aligned with national energy objectives.

Company Size

11-50

Company Stage

Early VC

Total Funding

$50M

Headquarters

California, Kentucky

Founded

2024

Simplify Jobs

Simplify's Take

What believers are saying

  • Secured $900M DOE contract in January 2026 for 10-year HALEU production.
  • Signed August 2025 lease for $1.5B Paducah plant targeting 2030 operations.
  • Selected in October 2024 among four DOE awardees for domestic enrichment services.

What critics are saying

  • Centrus undercuts with proven centrifuges, capturing 60-80% HALEU share in 12-24 months.
  • Paducah remediation delays shift operations from 2030 to beyond due to contamination.
  • DOE withholds $900M payments if scalability fails, causing cash burn in 12-24 months.

What makes General Matter unique

  • General Matter develops proprietary scalable uranium enrichment technology for LEU and HALEU.
  • First privately funded U.S. company leasing Paducah site for commercial enrichment facility.
  • Peter Thiel-backed startup founded in 2024 by SpaceX veteran Scott Nolan.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

401(k) Retirement Plan

Stock Options

Unlimited Paid Time Off

Health Savings Account/Flexible Spending Account

Professional Development Budget

Growth & Insights and Company News

Headcount

6 month growth

9%

1 year growth

-20%

2 year growth

0%
ExchangeMonitor
Jan 5th, 2026
Three companies awarded $2.7 billion in uranium enrichment orders, DOE says

Three companies awarded $2.7 billion in uranium enrichment orders, DOE says. The Department of Energy said Monday it was awarding $2.7 billion total in task orders to three companies with the goal of strengthening domestic uranium enrichment over the next ten years. American Centrifuge Operating, a Centrus company, and General Matter are both receiving $900 million to create a domestic high-assay low-enriched uranium (HALEU) enrichment capacity. Orano Federal Services is receiving $900 million to expand the U.S. domestic low-enriched uranium (LEU) capacity. DOE signed HALEU and LEU contracts with six total companies late in 2024. DOE's Monday press release said developing domestic production capacity for both will ensure an adequate fuel supply for the nation's 94 commercial reactors and future deployments of advanced nuclear reactors. The Donald Trump administration has issued a number of executive orders aimed at strengthening the domestic nuclear fuel cycle, including uranium enrichment and conversion as well as domestic uranium production. Secretary of Energy Chris Wright emphasized the importance of domestic uranium production in a hearing in June, mourning that there is "no American-owned enrichment based in the United States of America" today, and that he strives to build "commercial enrichment in the United States." The Joe Biden administration has also worked to increase American domestic uranium enrichment capabilities with a ban on Russian-imported uranium that will begin in 2028.

Gizmodo
Jan 5th, 2026
US awards Peter Thiel-backed nuclear startup $900M to boost domestic uranium enrichment

The US Department of Energy has awarded $2.7 billion to three companies to strengthen domestic uranium enrichment capabilities. General Matter, a nuclear startup backed by Peter Thiel, will receive $900 million, alongside equal amounts for American Centrifuge Operating and Orano Federal Services. The funding, distributed over 10 years through milestone-based task orders, aims to reduce dependence on Russian fuel supplies, which currently control 44% of global uranium enrichment capacity and provide 35% of US nuclear fuel imports. The awards will also support domestic production of high-assay low-enriched uranium for advanced reactors. The initiative addresses surging electricity demand from AI data centres, as tech giants including Microsoft, Google and Meta expand their infrastructure. The funding was allocated in a 2024 government bill during the Biden-Harris administration.

National Association of Manufacturers
Aug 14th, 2025
Powering America's Nuclear Comeback

Just this month, California-based General Matter announced that it would construct an enrichment facility in Kentucky on the site of a former U.S. government enrichment plant, saying it "can produce at a lower cost the type of enriched uranium sought out by developers of advanced nuclear reactors."

OilPrice.com
Aug 8th, 2025
General Matter to Build $1.5 Billion Uranium Plant in Kentucky

Critical minerals startup General Matter announced ambitious plans this week to construct a $1.5 billion uranium enrichment facility at the Paducah Gaseous Diffusion Plant in McCracken County, Kentucky, as the Trump administration seeks to reduce reliance on rare earths from China.

Lexington Herald Leader
Aug 6th, 2025
'Atomic city of the future': Uranium enrichment facility signs lease in Paducah

General Matter, a California-based company, said Aug. 5 it will build a $1.5 billion facility in Paducah at the U.S. Department of Energy's former Gaseous Diffusion Plant.

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