X-energy Tech Stack

Advanced nuclear reactor design and manufacturing for carbon-free baseload power

Nuclear Electric Power Generation Rockville, MD 501–1,000 employees Privately Held

X-energy manufactures advanced pebble-bed nuclear reactors and coated-particle fuel designed for meltdown-proof operation and permanent waste containment. The tech stack reflects a capital-equipment company: CAD/simulation dominance (NX, ANSYS, ABAQUS, NASTRAN, LS-DYNA, Fusion 360), industrial control systems (PLC, DCS, HMI), and PLM/project management (Teamcenter, Primavera P6). Engineering-heavy hiring (184 roles across 262 open positions) centered on senior and leadership tracks signals active scaling of design and regulatory teams—critical for navigating NRC compliance and the multi-year licensing cycles that define the sector.

Tech Stack 37 technologies

Core StackPrimavera P6 GitLab Adobe Creative Cloud Adobe Illustrator Teamcenter PLC DCS HMI Excel EDR SIEM Concur NX SmartPlant Electrical SmartPlant Instrumentation Microsoft Office ANSYS ABAQUS NASTRAN FEMAP LS-DYNA Microsoft Project Photoshop InDesign CAD Mastercam Fusion 360 Siemens NX Unity OpenXR+6 more

What X-energy Is Building

◆Challenges

Compliance with nrc regulations
Waste permitting
Supplier performance issues
Meeting project schedule and cost goals
Complex design and analysis issues
Supplier compliance to regulatory requirements
Lifetime assessment of materials
Complex sales cycles in nuclear power
Optimizing manufacturing operations
Managing resource and organizational needs

▲Active Projects

Advanced reactor plant design
Xe-100 plant
Next generation nuclear reactor technologies
Regulatory audit responses
Implementation of the smartplant environment
Develop project specific supply chain execution plans
Next-generation advanced reactor plants
Licensing strategy execution
Implementing crm plan for key accounts
Developing capture strategies for new customer opportunities

Hiring Activity

Steady260 roles · 90 in 30d

Department

Engineering

184

Ops

Finance

Manufacturing

Construction

Legal

Sales

Seniority

Senior

132

Mid

Manager

Lead

Director

Intern

Junior

Principal

Notable leadership hires: Chief Engineer, Civil Structural Lead

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About X-energy

X-energy designs and manufactures next-generation advanced nuclear reactors with a focus on safety, waste isolation, and cost-competitive baseload power generation. The company's core innovation is coated-particle fuel (uranium particles sealed in protective layers) paired with pebble-bed reactor architecture. Operations span reactor plant design, fuel manufacturing, and supply-chain execution across a 501–1,000-person workforce headquartered in Rockville, Maryland. Active projects include the XE-100 plant design, licensing-strategy execution, and regulatory compliance work. The sales organization is nascent (4 roles) relative to engineering and operations, typical of early-stage nuclear vendors working through long pre-deployment validation cycles.

HeadquartersRockville, MD

Company Size501–1,000 employees

Hiring MarketsUnited States

Frequently Asked Questions

What is X-energy's main technology?

X-energy manufactures coated-particle fuel (uranium sealed in protective layers) and designs pebble-bed advanced nuclear reactors engineered for meltdown-proof operation and permanent waste containment.

What tech stack does X-energy use?

Engineering and design: NX, ANSYS, ABAQUS, NASTRAN, LS-DYNA, Fusion 360, CAD. PLM/project management: Teamcenter, Primavera P6. Industrial control: PLC, DCS, HMI. Security and enterprise: SIEM, GitLab, Concur, Microsoft Office.