Mechanical Engineer – Nuclear, Reactor Systems

Job not on LinkedIn

🔥 42 minutes ago

🇺🇸 United States – Remote

💵 $138.3k - $195.3k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍🔧 Mechanical Engineer

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Applied Atomics

WebsiteLinkedInAll Job Openings

11 - 50 employees

⚡ Energy

🤝 B2B

Energy • B2B

Applied Atomics is a company that develops, builds, and operates medium modular nuclear fission plants (100 MW to 1 GW) as turnkey, on-site power facilities. They offer end-to-end execution — licensing, construction, and operation — with a single power purchase agreement so customers (datacenters, industrial campuses, and utilities) receive dedicated, clean baseload power without running the plant themselves. Applied Atomics uses proven light-water reactor architecture and has secured an exclusive land-based license for the mPower™ small modular reactor technology from BWX Technologies, positioning itself as a B2B provider of site-dedicated nuclear power solutions.

📋 Description

• Design and develop mechanical systems and components for the reactor environment, including motion systems, actuators, linkages, structural components, and safety-related mechanical assemblies • Support hardware development for reactivity control, mechanical actuation, and system-level motion interfaces • Conduct design trade studies, concept development, and material selection • Perform structural and thermal analysis using hand calculations and finite element analysis tools • Conduct tolerance stack-ups, GD&T applications, and precision mechanical alignment studies • Evaluate fatigue, wear, friction, vibration, and reliability performance • Create manufacturing, assembly, and integration instructions • Develop and execute test plans for components and assemblies • Support hardware bring-up, test execution, failure analysis, and design iteration • Identify and work with suppliers for machined parts, actuators, bearings, materials, and assemblies • Ensure components meet dimensional, functional, and reliability requirements • Support design-for-manufacturability and design-for-assembly reviews • Collaborate with nuclear, thermal-fluids, materials, and systems engineers • Ensure mechanical designs align with nuclear safety, reliability, and performance requirements • Contribute to system-level integration across reactor subsystems • Own projects end-to-end from initial concepts through deployment and ongoing operations • Improve internal engineering processes, documentation, and tools

🎯 Requirements

• Bachelor’s degree in Mechanical Engineering or related field • 4+ years of experience designing mechanical systems or precision hardware (2+ years with MS) • Proficiency in mechanical analysis, including hand calculations and FEA (ANSYS, Abaqus, FEMAP, etc.) • Experience with CAD tools (NX, SolidWorks, Creo, etc.) • Demonstrated understanding and application of GD&T • Demonstrated hardware ownership from concept through detailed design, build, test, and iteration • Ability to operate across multiple cross-functional teams • Strong written and oral communication skills; able to explain complex topics simply • Self-starter, ownership mentality, and ability to drive tasks from concept to completion • Visa sponsorship is not available • Must be able to comply with U.S. export controls

🏖️ Benefits

• Substantial incentive stock plan for all full-time employees • Medical / Vision / Dental (details forthcoming) • Flexible PTO policy • Hybrid and remote work options depending on role • Other benefits to be announced at offer stage

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