Mechanical Engineer (PE) - Los Angeles Los Angeles, CA

General Matter is enriching uranium in America. Our goal is to design, build, and operate the world’s lowest-cost enrichment services in the United States. Our mission is to restore America’s ability to produce nuclear fuel—fuel that will power AI, advanced manufacturing, critical industries, and the next generation of nuclear reactors. Ultimately, our work will help power national ambitions and enable a high-energy society. We were incubated by Founders Fund, like Anduril and Palantir before us, and are backed by top-tier investors. Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production. We are a mission-driven company with a culture of urgency, accountability, and transparency. Help us build a high-energy society by making the cleanest, safest form of baseload energy the most affordable. About This Role As a Mechanical Engineer, you will play a pivotal role in executing a state-of-the-art enrichment facility from concept through commissioning. You will design, analyze, and ensure mechanical designs meet regulatory requirements for safety, performance, and compliance. You will have the opportunity to work on a greenfield project collaborating with structural engineers, electrical engineers, architects, and both internal and external partners to develop detailed mechanical designs and specifications. You will wear multiple hats and support your design work through vendor activity and troubleshooting. This is an exciting opportunity to solve complex problems at scale, manage multiple projects in a dynamic environment, and bring modern enrichment facilities online. 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. Basic Qualifications 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. Preferred Skills and Experience 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 on large scale, mission critical construction projects. Experience with local/state code compliance. Equal Opportunity Employer General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Compensation and Benefits The base salary range for this role is $90,000–$175,000 annually. Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan. #J-18808-Ljbffr General Matter, Inc.