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Plant Project Engineer IV

xenergy

Rockville, MDEngineeringPosted on October 15, 2026

First seen here Oct 15, 2026.

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X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, www.x-energy.com/careers/. We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at www.x-energy.com/contact-us. Job Description This position provides support to the manager of Plant Support Systems (PSS) by providing both management and technical oversight to the team of engineers developing the PSS systems for the Xe-100 power plant for various projects. This includes oversight of resources to develop system requirements and produce key design deliverables, such as, calculations, drawings, datasheets, specifications, reports, and other system-defining documentation. This role supports the management of a team of engineers engaged in both direct development of the design as well as oversight of third-party engineering contractors to create portions of the design. Job Responsibilities Support the execution of the designing and developing plant mechanical systems and components using sound engineering principles and adhering to business standards, practices, procedures, and product / program requirements. Supports the management of engineering resources across multiple projects and ensures qualified engineers are performing assigned work. Lead project design cycle sprints and provide direction to ensure the convergence of efforts of engineering team members, partners, and suppliers in delivering high-quality engineering work products on schedule and within budget as defined by the Project leadership. Tracks deliverables according to progress and schedule while ensuring such deliverables are completed with quality and on time. Determines the appropriate resource to produce the deliverable. May manage engineering staff by ensuring they meet expectations and promoting their professional development. Supports the Business Development workgroup, providing technical resources when needed and engaging with potential future clients to promote marketing of X-energy products and/or technologies. Supports the development of strategy, methodology and technical tools for their area of responsibility, including control of resources and policy formulation. Assesses internal and external business challenges and recommends best practices to improve products, processes, tools, or services. Uses judgement to support making decisions and handling complex tasks or problems in areas of operations, product management, technology, or engineering. Assesses quality of information given and asks pertinent questions to stakeholders. Offers new solutions to problems outside of set parameters and proactively constructs and provides recommendations. Performs work in accordance with design control procedures, ensuring thorough documentation of work, facilitation of internal and external design reviews, and control of product design configuration data. Maintains professional demeanor and behavior at all times in all forms of communication. Performs other duties as assigned by manager. Job Qualifications Bachelor’s degree in mechanical or systems engineering or related discipline from an accredited university or college. Typically, 10+ years of engineering experience Requires specialized knowledge within the function of mechanical engineering or systems engineering, related to system requirements, system physical architecture, integrated system design, technical data management, and technical risk management. Preferred Experience Experience as a consultant in an EPC environment designing integrated mechanical systems for major power plant projects. Experience working directly in or with the nuclear industry; in particular, working in or with existing light water reactor (LWR) fleet plants and/or developing mechanical system design for use with advanced reactor / SMR technology. Experience developing and leading the development of full integrated mechanical system design for major power plant projects, from initial concept to releasing design for construction. Experience managing the technical portion of equipment and material procurement contracts (specification, bid, bid evaluation, selection, and contractor management through delivery) Experience supporting construction of power plants or other heavy industry facilities, including direct field experience or office support of construction activities. Location: 9801 Washingtonian Blvd, Gaithersburg, MD Work Site Expectations: 5 days in office Travel Expectations: Up to 10% Hours: Standard office hours are 8:00am - 5:00pm ET, Monday – Friday Compensation As required by Maryland and other applicable state law, X Energy, LLC (X-energy) lists the expected compensation range for a publicly advertised job opportunity based upon the job requirements (e.g. education/training, experience, skill sets, etc.). Individual candidates who meet the job requirements for the posted position will be offered a salary within this range based on their respective levels of education/training, experience, and other qualifications unique to them. Salary ranges may vary based on the specific office location and region referenced in the posting to take into consideration differences in cost of living and may not be reflective of all regions. Please note that compensation ranges listed for US job postings reflect base salary only and do not include benefits or other incentives. Offers within the posted salary range are commensurate with the individual’s qualifications for the position, along with a view on internal equity, market data, and room for growth. The salary range for this position is: $132,500 - $155,000 Position Job Classification Full time - Exempt Benefits X Energy, LLC offers a robust benefits package that includes a 401K plan with an employer match, Medical/Dental /Vision Insurance, Life and Disability Insurance, Paid Time Off, and a Tuition Reimbursement/Professional Development policy that supports the continuing education of our employees. An Equal Opportunity Employer.  All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. X Energy, LLC participates in E-Verify. Please visit the links below for more information about E-Verify and the protection of your Right to Work. Right To Work Link: If you have the right to work, don't let anyone take it away (e-verify.gov) E-Verify Participation Link: E-Verify Participation Poster English and Spanish X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power. We believe in leaving a cleaner planet for our children and grandchildren, while continuing to provide sufficient and affordable power to sustain growing populations around the world. That is why we have reinvented nuclear power, with a unique combination of proven technologies and new innovations, to meet our current and future needs. Watch our Anthem here An Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Equal Employment Opportunity Posters X-energy does not discriminate in employment against qualified individuals on the basis of a disability, and understands its obligation to make reasonable accommodation for individuals with physical or mental impairments that qualify as a disability under the ADA and ADAAA, unless the accommodation would impose an undue hardship on the company. It is an applicant’s or employee’s responsibility to participate in this interactive process by seeking an accommodation, assisting X-energy in reviewing accommodation alternatives and providing medical certification of the need for an accommodation. Any applicant or employee who wishes to seek an accommodation under this policy should contact the Human Resources Department via email at hr@x-energy.com. Whether a requested accommodation would create an undue hardship will be determined based on the facts of each particular case.

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