X-energy · 1 month ago
Engineer IV-V Mechanical Systems Design Engineer
Rockville, MD
Full-time
Onsite
Senior Level, Lead/Staff
10+ years expX-energy is a company focused on advancing technology in the nuclear sector, and they are seeking a Mechanical Systems Design Engineer with extensive experience. This role involves engineering design, integration, and commissioning of testbeds for prototype designs, as well as evaluating performance to support rapid iteration processes.
Clean EnergyCleanTechEnergyNuclearRenewable Energy
Responsibilities
Responsible for the engineering design, integration, and commissioning of specialized testbeds that will be used for testing prototype designs to reduce risk and advance Technology Readiness Level (TRL)
Play a key role in evaluating the performance of prototype designs to facilitate rapid iteration of the design, build, and testing process
Qualification
Required
10+ years of hands-on experience designing, manufacturing, integrating, and testing mechanical systems, assemblies, and components
Company
X-energy
X-energy is a nuclear energy company that develops small modular nuclear reactors and nuclear fuels for clean energy generation.
501-1000 employees
H1B Sponsorship
X-energy has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (1)
2022 (2)
2020 (1)
Funding
Current Stage
Late StageTotal Funding
$1.71BKey Investors
Jane Street CapitalPittco ManagementDepartment for Energy Security & Net Zero
2025-11-24Series D· $700M
2025-03-05Private Equity· $22.8M
2024-10-16Series C· $700M
Leadership Team
J. Clay Sell
CEO
Robert Taylor
Vice President, Regulatory Affairs and Licensing
Recent News
2026-01-06
Crunchbase News
2025-12-17
Company data provided by crunchbase