# Mechanical Engineer, Reactor Structures at Forgeatomics > Location unclear · Unspecified · Software engineering · open. Source: https://alderhq.app/jobs/ashby%3Aforgeatomics%3Ad4fcda7b-7f7a-4149-aae3-cbb8aae00a2c (read 2026-11-08). ## Facts (observed) - Company: [Forgeatomics](https://alderhq.app/companies/forgeatomics) - Location text: El Segundo - Where it can be done from (inferred): Location unclear (evidence: "Location: El Segundo") - Posted: 2026-07-17 (113 days ago) - First seen by alder: 2026-11-04 · last verified: 2026-11-04 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://jobs.ashbyhq.com/forgeatomics/d4fcda7b-7f7a-4149-aae3-cbb8aae00a2c ## Pay and sponsorship - Posted pay: $115k–$150k per year (from the listing's pay field) - Market band for similar posted roles (Los Angeles, n 514): p25 $120k, median $143k, p75 $163k ## Description (the employer's text) ### Forge Atomics Humanity faces two critical challenges: securing reliable energy and aggressively lowering our environmental impact. At Forge, we believe nuclear fission is the key to solving both at once. Today Forge is developing the technology to rapidly scale the deployment of nuclear fission. ### Mechanical Engineer, Reactor Structures As a structures engineer at Forge, you'll be responsible for designing and building reactor hardware such as the pressure vessel, containment, and structural elements for Ember, our pilot 25 MWe reactor. These designs must withstand the extreme temperature and pressure environments of our reactor while meeting regulatory requirements and being optimized for cost, mass, and manufacturability. Successful candidates will have previously demonstrated extreme ownership in delivering mechanical systems in fast-paced, high-reliability environments. ### Responsibilities Design, build and test pressure vessels, containment structures, seismic isolation, and secondary structures for Ember, our pilot nuclear reactor Carry out trade studies for optimal structural materials, balancing cost, mass, strength, corrosion resistance, and manufacturability Validate reliability of designs with rigorous testing: thermal cycling, pressure cycling, shock, vibration, radiation embrittlement, and corrosion. Design experiments to ground analysis, develop fixturing, and create technical reports based on results Work with manufacturers to understand process limitations and adapt designs for lead times and manufacturability Collaborate with peers from different systems to develop designs that balance cost, efficiency, and deployment logistics Support the assembly of your hardware in the factory, witness your designs being brought to life daily, and watch them power an abundant, clean future ### Basic Qualifications Bachelor's degree in mechanical engineering or a related technical discipline 1+ years of engineering experience designing, analyzing, and building mechanical hardware (internships and school project team experience qualify) ### Preferred Skills and Experience Strong interpersonal and collaborative skills, enthusiasm for problem solving, and desire to enable abundant clean energy Experience leading or working on an engineering competition team, i.e. Formula SAE, Baja SAE, Solar Car, Rocketry, Cubesat, or similar Ability to perform trade studies and make clear recommendations using first principles and engineering fundamentals even with partial information Experience working at a nimble engineering organization or in a highly technical position that required a scrappy, entrepreneurial manner to accomplish tasks with tight time or budget constraints Hands on experience designing, testing, and operating high-pressure systems and pressure vessels Experience with forging for large, high-pressure vessels Experience with welding processes, inspection, and qualification Experience designing to the ASME Boiler and Pressure Vessel Code Hands-on experience with fluid, gas, or thermal systems ### Additional Requirements Position will be based in the South Bay area of Los Angeles County and will require relocation if not already local. The position will be full-time in the office. Ability to work extended hours and weekends as necessary Ability to travel to reactor construction sites in other states as necessary ### Compensation and Benefits Pay range: Level I: $115,000.00 - $130,000.00/per year + equity Level II: $125,000.00 - $150,000.00/per year + equity Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience. Base salary is just one part of your total rewards package at Forge. You may also be eligible for long-term incentives, in the form of company stock or stock options, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan. You will also receive access to comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, paid vacation, paid parental leave, and various other perks. Employees accrue paid sick leave pursuant to Company policy which satisfies or exceeds the accrual, carryover, and use requirements of the law. --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/ashby%3Aforgeatomics%3Ad4fcda7b-7f7a-4149-aae3-cbb8aae00a2c and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.