Engineer III, Plant and Process Design jobs in United States
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X-energy · 15 hours ago

Engineer III, Plant and Process Design

positionRockville, MD
timeFull-time
remoteOnsite
seniorityMid Level

X-energy LLC is hiring a Plant and Process Design Engineer to support its Nuclear Auxiliary Systems Group. This role is responsible for designing and developing mechanical systems and components, overseeing the implementation of engineering processes, and ensuring technical integration and support throughout the project lifecycle.

Clean EnergyCleanTechEnergyNuclearRenewable Energy
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H1B Sponsor Likelynote

Responsibilities

Designing and developing mechanical systems and components
Identifying requirements
Conceptualizing system architecture and developing the layout through final design
Performing process calculations
Selecting and specifying equipment components ensuring they meet all technical specifications and program/project requirements
Overseeing the implementation of rigorous, repeatable System Engineering processes
Ensuring technical integration
Monitoring risks
Providing system-level oversight and support
Managing the entire effort to bring the system from initial requirements to a fully functional operational state in accordance with X-energy design guides and standards and sound engineering principles

Qualification

Mechanical systems designProcess calculationsSystem engineering processesTechnical specificationsRisk monitoringSystem-level oversight

Required

Experience in designing and developing mechanical systems and components
Ability to identify requirements and conceptualize system architecture
Experience in developing layouts through final design
Proficiency in performing process calculations
Ability to select and specify equipment components ensuring they meet all technical specifications and program/project requirements
Experience overseeing the implementation of rigorous, repeatable System Engineering processes
Ability to ensure technical integration and monitor risks
Experience providing system-level oversight and support
Ability to manage the entire effort to bring the system from initial requirements to a fully functional operational state
Familiarity with X-energy design guides and standards and sound engineering principles

Company

X-energy

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X-energy is a nuclear energy company that develops small modular nuclear reactors and nuclear fuels for clean energy generation.
dateFounded in 2009
location
Rockville, Maryland, USA
people-size501-1000 employees
web-link
https://x-energy.com

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 Stage
Total Funding
$1.71B
Key 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

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J. Clay Sell
Chief Executive Officer
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Robert Taylor
Vice President, Regulatory Affairs and Licensing
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Recent News

Business Wire
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2026-01-16
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2026-01-16
MIT Technology Review
How next-generation nuclear reactors break out of the 20th-century blueprint
2026-01-13
Company data provided by crunchbase