X

X-energy

Develops SMR reactors and TRISO fuel

Principal Nuclear Assurance Engineer

Full-Time
$180k - $250k
Expert
Bachelor's
Gaithersburg, MD, USA
HybridLocal employees must work in the office 3–4 days per week; remote eligibility is for non-local employees. Travel up to 30% as needed.
Project & Program ManagementProgram Management

About the job

Requirements
  • A bachelor's degree in engineering or a related field, preferably in mechanical, chemical, electrical, or another related discipline, or five years of experience in lieu of a degree.
  • Typically, twenty years of experience in an engineering role or related field.
  • Experience in engineering project environments.
  • Demonstrated ability to lead cross-functional initiatives without direct authority.
  • Experience with project management methodologies.
  • Demonstrated experience leading enterprise-level or highly complex strategic initiatives across multiple technical and business functions.
  • Recognized ability to influence organizational direction, resolve highly ambiguous issues, and drive results on matters of major strategic importance.
Responsibilities
  • Identify, track, and proactively remove roadblocks across high-temperature gas-cooled reactor development projects to maintain progress against critical timelines.
  • Coordinate with technical leads, Engineering, Procurement, Business Development, and regulatory stakeholders to resolve cross-functional challenges.
  • Consolidate and distill complex technical information into concise, actionable intelligence for executive leadership.
  • Work directly with Business Development and Licensing Teams to promote relationship building internally and externally, including early discovery conversations to ensure credibility.
  • Establish effective communication channels between technical teams internally and externally, ensuring alignment of priorities and resources.
  • Lead cross-functional initiatives through influence and relationship-building rather than direct authority.
  • Facilitate and assist in the assessment of customer needs and capture requirements and functions related to plant design, including nuclear island systems and conventional island systems.
  • Create and maintain project documentation, decision matrices, and status reports for communication to leadership, the organization, or external partners and clients.
  • Support change management processes when project scope or requirements evolve.
  • Develop and track performance metrics to measure project health and progress.
  • Anticipate potential obstacles before they impact schedules and develop contingency plans.
  • Lead resolution of the most complex, high-impact cross-functional issues affecting reactor development strategy, program execution, and external stakeholder commitments.
  • Serve as a strategic advisor to senior leadership by framing issues, evaluating options, and recommending paths forward on significant technical and programmatic matters.
  • Drive alignment across the organization on engineering strategy, program priorities, and execution risks where competing interests or ambiguity exist.
  • Mentor more junior team members and share knowledge related to engineering strategy, project coordination, and cross-functional execution across the organization.
  • Represent the organization with internal and external stakeholders on highly sensitive, technically complex, or strategically important matters.
  • Perform other duties as assigned by the manager.
Desired Qualifications
  • Fifteen years of experience in nuclear and non-nuclear audit activities.
  • Deep understanding and development of ASME codes and standards, quality processes, and procedures.
  • Experience setting up engineering processes and supporting quality programs to obtain and maintain quality certifications such as ASME N-stamp.
  • Working knowledge of metallic and non-metallic components such as reactors and steam generators.

About the company

X

X-energy

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Website

X-energy designs and develops advanced nuclear reactors and fuel, aiming to commercialize small modular reactors based on a Generation IV high-temperature gas-cooled pebble-bed design and its TRISO-X fuel. The reactor uses ceramic-coated TRISO fuel in pebbles within a modular, sealed unit that operates at high temperatures to generate electricity or process heat, with safety features baked into the fuel and design. It differentiates itself by pursuing a specific Generation IV high-temperature gas-cooled, pebble-bed, TRISO-X fuel approach in a modular platform backed by significant financing to move toward commercialization. The company’s goal is to bring cleaner, safer nuclear energy to the market by completing design, obtaining regulatory clearance, and deploying its SMR technology and fuel at commercial scale.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Rockville, Maryland

Founded

2009

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Simplify Jobs

Simplify's Take

What believers are saying

  • DOE raised Seadrift support to $2.15 billion on August 13, 2026.
  • NRC issued Long Mott's FONSI in August 2026, clearing a major permitting hurdle.
  • X-energy expanded Gaithersburg to 145,000 square feet, signaling hiring for commercialization and manufacturing.

What critics are saying

  • Waterkeeper's NRC financial-qualifications challenge remains live; denial kills Long Mott's first commercial project.
  • Dow's 4,500-job layoffs and $2.15 billion cost-share expose financing fragility through 2026.
  • NRC safety review still runs through November 2026; any delay pushes commercial revenue beyond 2030.

What makes X-energy unique

  • Xe-100 runs helium-cooled, 750°C reactors for industrial steam, not just electricity.
  • TRISO-X fuel and graphite supply agreements lock safety-critical manufacturing around proprietary reactor design.
  • Dow, Amazon, and Centrica pipeline spans 11-plus gigawatts across industrial and AI demand.

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Benefits

  • 401(k) Retirement Plan
  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Paid Time Off
  • Tuition Reimbursement/Professional Development

Growth & Insights and Company News

6 month growth

5%

1 year growth

15%

2 year growth

10%
Sharewise
Oct 29th, 2026
SGL Carbon and X-energy sign further supply contract.

SGL Carbon and X-energy sign further supply contract. EQS-Media / 29.10.2026 / 14:00 CET/CEST * SGL Carbon receives additional commercial order worth approximately 90 million USD to supply nuclear graphite for X-energy's Xe-100 reactors * X-energy and SGL Carbon confirm long-term collaboration Wiesbaden, October 29, 2026. SGL Carbon LLC ("SGL Carbon") has received an additional order for the supply of nuclear graphite from X-energy Reactor Company, LLC ("X-energy") in accordance with the existing framework agreement. The order is valued at approximately 90 million USD. SGL Carbon will supply medium-grain isotropic graphite ("NBG-18"), a specialty material that is of central importance for X-energy's Xe-100 high-temperature gas-cooled reactors. This is the second order SGL Carbon has received from X-energy for commercial Small Modular Reactor (SMR) projects, and it underscores the close, long-term partnership between the two companies. Andreas Klein, CEO of SGL Carbon SE, confirms: "We are very pleased that our high-performance graphite NBG-18 enables us to make an important contribution to securing X-energy's supply chain and, thus, to the further commercialization of the Xe-100 reactors. Together with X-energy, we will expand our production capacity to meet the future demand for nuclear graphite for the Xe-100 reactors." In January 2026, SGL Carbon and X-energy had already announced the signing of a 10-year framework agreement and the first supply order for the delivery of graphite reactor components for the first commercial project by X-energy and Dow, Inc. in Seadrift, Texas. The first graphite components manufactured by SGL Carbon for this project have already been delivered to X-energy. Production of the newly ordered graphite billets will start at the end of 2026. In August 2026, X-energy and SGL signed an agreement to jointly expand production capacity for nuclear graphite at SGL Carbon sites, expanding initial NBG-18 billet production at itssite in Chedde (France), and machining capacity in St. Marys (U.S.). "Bringing advanced nuclear to commercial-scale starts with proven suppliers, and their ability to work collaboratively across the development cycle to bring these components to production," said Jesse Walker, Chief Supply Chain Officer at X-energy. "SGL is exactly that type of partner, working closely with our technical teams across qualification, prototyping, and now repeated commercial-scale production." About SGL Carbon SGL Carbon is a technology-based company and one of the world's leading manufacturers of carbon-based solutions. Its materials and products made from specialty graphite, high-performance fibers, and composite materials serve the most demanding applications in many industries that are shaping the future: mobility, semiconductor technology, LEDs, energy generation, aerospace, and fuel cell manufacturing. SGL Carbon also develops forward-looking and reliable solutions for the chemical industry, numerous industrial applications, and, increasingly, the defense industry. With approximately 3,800 employees at 27 locations in Europe, North America, and Asia, SGL Carbon generated revenue of 850 million euros in fiscal year 2025. Further information about SGL Carbon can be found at www.sglcarbon.com/presse. About X-energy X-energy, Inc. is a leading developer of advanced small modular nuclear reactors and fuel technology designed to establish a new standard in clean, safe, reliable energy. X-energy's intrinsically safe Xe-100 high-temperature gas reactor and TRISO-X particle fuel expand applications for nuclear technology, with commercial projects underway with Dow, Amazon, and Centrica across grid, industrial, and AI applications. Together, X-energy's technology drives enhanced safety, lower cost, faster construction timelines, and scalable deployment when compared with other SMRs and conventional nuclear. Important note: To the extent that its press release contains forward-looking statements, the latter are based on information that is available at present and on its current forecasts and assumptions. Forward-looking statements, by their very nature, entail known as well as unknown risks and uncertainties that may lead to actual developments and events differing substantially from the forward-looking assessments. Forward-looking statements must not be understood to be guarantees. Instead, future developments and events depend on a large number of factors; they comprise various risks and imponderables and are based on assumptions that may possibly turn out not to be appropriate. These include unforeseeable changes to fundamental political, economic, legal and societal conditions, particularly in the context of its main customers' industries, the competitive situation, interest and exchange rate trends, technological developments as well as other risks and uncertainties. sharewise GmbH. perceive additional risks e.g. in pricing developments, unforeseeable events in the environment of companies acquired and Group member companies as well as in current cost savings programs from time to time. The SGL Carbon assumes no obligation and does not intend to adjust or otherwise update these forward-looking statements either. SGL Carbon SE Claudia Kellert - Head of Investor Relations, Communications and Corporate Sustainability Soehnleinstrasse 8 65201 Wiesbaden/Germany End of Media Release Issuer: SGL Carbon SE Key word(s): Enterprise 29.10.2026 CET/CEST Dissemination of a Press Release, transmitted by EQS News - a service of EQS Group. The issuer is solely responsible for the content of this announcement. The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. View original content: EQS News Language:EnglishCompany:SGL Carbon SESöhnleinstraße 865201 WiesbadenGermanyPhone:+49 (0)611 6029 - 0Fax:+49 (0)611 6029 - 101E-mail:[email protected]:www.sglcarbon.comISIN:DE0007235301, DE000A30VKB5, DE000A351SD3 WKN:723530Indices:SDAXListed:Regulated Market in Frankfurt (Prime Standard); Regulated Unofficial Market in Dusseldorf, Hamburg, Hanover, Munich, Stuttgart, Tradegate BSXLEI Code:52990038IB31TYK07X63EQS News ID:2424610 | End of News | EQS Media | 2424610 29.10.2026 CET/CEST The discussion is visible to sharewise members.

Power Engineering
Oct 23rd, 2026
Indiana nuclear proposals target retired fossil plant sites.

Indiana nuclear proposals target retired fossil plant sites. October 23, 2026 Share to: Two new nuclear ventures announced Oct. 19 in Indiana would leverage retired or retiring fossil generation sites as high power demand continues to strain the grid and data centers search for new supply. AtkinsRéalis, the State of Indiana, and Hoosier Energy Rural Electric Cooperative have signed a memorandum of understanding to explore the potential development of a campus of up to eight CANDU nuclear reactors that could provide up to 6 GW of new nuclear generation. Separately, American Electric Power (AEP) and X-energy are evaluating 960 MW of small modular reactor (SMR) capacity at the former Breed Generating Station, a retired coal plant site in Sullivan County, with developmental funding from Amazon. From retired coal sites to new reactor fleets, nuclear projects are moving fast. Join utilities, owner-operators, EPCs and OEMs at POWERGEN 2027, Jan. 18-21 in Salt Lake City, for dedicated programming on nuclear, SMRs and advanced reactors. Eight CANDU reactors. The MOU between AtkinsRéalis, the State of Indiana, and Hoosier Energy Rural Electric Cooperative would facilitate initial discussions to evaluate potential deployment scenarios for CANDU nuclear technology in the state. The partners say a multi-unit/fleet approach would provide opportunities to benefit from standardized design and repeatable construction, while supporting a sustained skilled workforce and long-term domestic supply chain. The evaluation also considers the construction of several smaller scale gas turbine simple cycle or combined cycle plants in advance of the nuclear plants to accelerate the power deployment. It would also leverage opportunities for nuclear development at retired or retiring generation sites. No specific sites were named in the announcement this week. The MOU states that any potential project timeline will depend on site selection, financing, utility or offtake arrangements, applicable regulatory and licensing activities, environmental review, transmission and interconnection planning, community and stakeholder engagement, and other diligence and approvals. On the regulatory side, AtkinsRéalis has initiated pre-application engagement with the U.S. Nuclear Regulatory Commission (NRC), building on the company's June 2026 Letter of Intent submission to begin the U.S. licensing process for CANDU technology. The first public NRC meeting associated with the licensing process was held in August 2026, and the first of seven planned topical reports (covering the quality assurance program) has now been submitted. AEP, X-energy eye Sullivan County SMRs. AEP, through its subsidiary Indiana Michigan Power (I&M), signed a joint development agreement with X-energy and a funding agreement with Amazon to study the Breed site. Under the agreement, the three companies would target building 12 of X-energy's Xe-100 SMRs, which would add 960 MW of capacity that would serve both the regional power grid and Amazon's data centers. This marks the second project under Amazon and X-energy's collaboration that aims to add more than 5 gigawatts (GW) of new nuclear capacity to the U.S. grid by 2039, following the Cascade Advanced Energy Facility in Washington state. The Xe-100 is an 80 MW high-temperature gas-cooled reactor that uses helium as a coolant and is powered by TRISO fuel. By design, X-energy says the helium coolant and TRISO fuel create a structure where the reactor's physics prevent a meltdown without requiring active systems or human intervention to ensure safety. X-energy argues that these safety mechanisms and the reactor's compact footprint mean it can be built closer to where power is needed. Amazon's relationship with X-energy began through the Climate Pledge Fund - Amazon's $2 billion venture investment program supporting its commitment to reaching net-zero carbon by 2040. Amazon anchored X-energy's Series C-1 financing round in 2024, which ultimately closed at $700 million, to fund the completion of X-energy's reactor design and licensing as well as the first phase of its TRISO-X fuel fabrication facility in Oak Ridge, Tennessee.

Yahoo Finance
Oct 20th, 2026
X-Energy, AEP and Amazon to assess 960MW Indiana nuclear project at ex-coal site

X-Energy, American Electric Power and Amazon have agreed to assess a 960MW advanced nuclear project in Indiana using X-Energy's Xe-100 small modular reactors. The project would reuse a former coal plant site in Sullivan County. Amazon would fund development and commit to a long-term power purchase. The next test is whether the study leads to a final investment decision. Regulatory steps, site approvals or a construction timeline would show if the concept becomes a contracted project. X-Energy has a market cap of $4.3 billion. It reported revenue of $150.28 million and a loss of $448.87 million.

Summa Money
Oct 20th, 2026
X Energy (XE) could be 16% undervalued as valuation views split.

X Energy (XE) could be 16% undervalued as valuation views split. October 20, 2026 X-Energy (XE) sits in focus as investors weigh a nuclear technology story with US$150.28 million in revenue, a reported net loss of US$448.87 million, and a recent share price of US$10.54. The recent pattern around X-Energy has been choppy, with a 1-day share price return of 1.74% offering a brief rebound after the stock fell 17.14% over 7 days and declined 63.90% year to date. This points to fading momentum despite the nuclear technology story. Scan beyond X-Energy and size up other nuclear-focused plays with its handpicked 16 nuclear energy infrastructure stocks, which is shaping the next wave of power infrastructure. Bulls see X-Energy as a nuclear growth story that has been temporarily knocked off course. Bears point to the heavy losses and the steep year-to-date slide. Which side do the current valuation markers lean toward next? Preferred Price-to-Sales of 20.2x: Is it justified? X-Energy closed at $10.54, and on current revenue that translates into a P/S of 20.2x, which screens as rich compared with both peers and the wider US electrical equipment space. P/S looks at how much investors are paying for each dollar of sales. For a business like X-Energy that is still loss-making, this metric often becomes the main shorthand for how much faith the market has in the revenue story when earnings are not yet in the picture. Here, that shorthand is loud. X-Energy trades on a P/S of 20.2x while the US electrical industry sits at 2x and the peer average is 11.6x. The fair P/S level implied by the SWS model is 0.8x, which is far lower and signals a price level the market could move toward if enthusiasm for the nuclear technology story cools or revenue delivery does not keep pace with high expectations. Result: Price-to-sales of 20.2x (OVERVALUED) Still, the X-Energy story carries clear pressure points, including the sizeable US$448.87 million loss and a rich P/S. This leaves little cushion if sentiment cools. Another view: DCF puts X-Energy in A different light. The rich 20.2x P/S ratio presents X-Energy as expensive, yet the SWS DCF model suggests a different perspective. On that framework, the stock at $10.54 trades about 15.5% below an estimated future cash flow value of $12.47, which frames X-Energy as undervalued from this standpoint. Both views use real numbers yet tell very different stories about risk and potential reward. Which one feels closer to how you think cash generation for a nuclear technology developer should be priced next. Simply Wall St performs a discounted cash flow (DCF) on every stock in the world every day (check out X-Energy for example). Summa Money show the entire calculation in full. You can track the result in your watchlist or portfolio and be alerted when this changes, or use its stock screener to discover 35 high quality undervalued stocks. If you save a screener Summa Money even alert you when new companies match - so you never miss a potential opportunity. Next steps. Mixed signals around X-Energy can be confusing, especially when the data highlights both pressure points and bright spots. Act promptly by reviewing the underlying metrics, weighing the risks against the potential upsides, and grounding your stance in the full picture of 3 key rewards and 2 important warning signs. Looking for more investment ideas beyond X-Energy? If X-Energy has your attention, do not stop here. Use this momentum to line up your next watchlist candidates before the crowd gets there. This article by Simply Wall St is general in nature. Summa Money provide commentary based on historical data and analyst forecasts only using an unbiased methodology and its articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Summa Money aim to bring you long-term focused analysis driven by fundamental data. Note that its analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned. Companies discussed in this article include XE. Have feedback on this article? Concerned about the content? Get in touch with Summa Money directly. Alternatively, email [email protected]

WANE 15
Oct 19th, 2026
Nuclear power plant plans are set for 2 Indiana counties. Could Allen County be next?

Nuclear power plant plans are set for 2 Indiana counties. Could Allen County be next? Posted: Oct 19, 2026 / 06:30 PM EDT Updated: Oct 19, 2026 / 06:30 PM EDT FORT WAYNE, Ind. (WANE) - As another Indiana community prepares to potentially welcome a nuclear energy plant, where does Allen County stand? Amazon, X-energy and American Electric Power, AEP, announced Monday they are partnering to explore building a 960-megawatt advanced nuclear energy plant in Sullivan County, located in southwest Indiana. The 12-unit development would consist of X-energy's small modular reactor, SMR, technology and could create more than 1,000 construction jobs, as well as more than 100 permanent positions. It is expected to be operable for 60 years. According to a press release sent out by AEP, this plant, which would be run by AEP with early-stage Amazon funding, would be one of the largest carbon-free energy investments in the state's history, with the potential to power nearly one gigawatt of energy to the power grid. That electricity could power 780,000 homes without costing existing customers extra, AEP estimates. The push for nuclear power. The way this energy is extracted looks similar to a gumball machine, according to Ben Reinke, X-Energy's Deputy Chief Commercial Officer. In a promotional video addressing frequently asked questions that Amazon sent to WANE 15, Reinke explains how nuclear power plants operate. Pebbles enter the top of the reactor. The uranium from those rocks generates heat and that energy is extracted when helium pushes past the pebbles. That heat is sent into a steam turbine to turn a turbine, which generates the power. Stephanny Smith, Director of Communications and Engagement with I&M, believes this method of powering local grids may be the best long-term solution sought for Indiana. "The future of energy really is nuclear," she said. "Our demand for energy is growing in our state in our region," Smith said. "We have some of the larger customers coming in but also our state is just really growing in general and so nuclear energy provides large amounts of consistent reliable clean energy. Right now, there are no nuclear power plants in the state, though some Hoosier homes are being powered by the Cook Nuclear Plant in Southwest Michigan, run by AEP. Smith said the Sullivan County plant would be the first of its kind for Indiana. That is, if it's approved before another nuclear plant proposed for Spencer County near Evansville. Both plant announcements follow Indiana Governor Mike Braun's encouragement to establish nuclear energy in Indiana. In July, he launched the Indiana Advanced Nuclear Ready Communities Program, designed to get communities ready to welcome SMRs. Sullivan and Spencer County are both active in this program. "Indiana is building an energy future that prioritizes affordability for Hoosier families and businesses while driving economic growth. The decision by I&M/AEP, Amazon and X-energy to explore this technology in one of Indiana's counties represents the kind of innovation and investment that can deliver lasting benefits for our state. This project has the potential to create well-paying jobs in Sullivan County, strengthen our electric grid and further position Indiana as a national leader in advanced nuclear energy," Braun stated in I&M's press release. Where Allen County stands on the nuclear question. WANE 15 reached out to the City of Fort Wayne, the Allen County Board of Commissioners and the City of New Haven to find out if they were applying for the state-led program to become "nuclear ready." A spokesperson for the board told WANE 15 no steps towards nuclear readiness are being taken at this time. Another spokesperson for Fort Wayne Mayor (D) Sharon Tucker's office told WANE 15 there have been no actions taken and it is continuing to review the program; the same response the office gave in July. "We're always looking at what's best for Fort Wayne's long-term energy future and economic growth. Our team is reviewing the state's program to understand what it would mean for our community, our workforce, and our infrastructure. We haven't made any decisions, but we believe in staying at the table for conversations that could bring investment and good jobs to our region," the mayor's office spokesperson told WANE 15. The City of New Haven, however, is exploring alternate power potentials. A spokesperson sent WANE 15 a statement explaining Mayor Steve McMichael (R) and some of his staff are at the Global Nuclear Energy Economic Summit in Indianapolis to learn more about nuclear energy, emerging technologies, and economic development opportunities. "The next industrial revolution is taking shape, and communities need to be prepared to compete for the jobs and investments of tomorrow," said Mayor Steve McMichael. "Our responsibility is to understand the opportunities, ask the right questions, and make sure New Haven is part of the conversation." At least one session of Indiana's Nuclear Ready Communities has been held in New Haven. The city will host another on November 4, 2026, at 5:30 p.m. at the New Haven Community Center.