Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Mechanical Engineer 1 - Nuclear

$84.76k - $129.5k

Sargent & Lundy

Responsibilities

This role will offer a hybrid work arrangement. The expectation will be to spend three days a week in the office, giving you the flexibility to work remotely for two days.

You will be involved in nuclear power plant systems design, including preparation or review of:

  • Modification packages for operating nuclear power plants

  • Functional mechanical drawings and/or drawings for nuclear power plant systems

  • Engineering analyses and evaluations to support modifications and operation of plant systems

  • Technical specifications and procurement documents for plant equipment

  • Vendor bid evaluations for plant equipment

  • Studies and options evaluations for modifications to operating nuclear power plants

In addition, you will have the opportunity to:

  • Develop engineering cost estimates for small to mid-sized client-requested work scopes

  • Visit client office and/or plant site locations to interface with the client and make presentations related to engineering tasks and status

  • Lead engineering project teams

Qualifications

We do not sponsor employees for work authorization in the U.S. for this position.

  • BS or MS in Mechanical or Chemical Engineering from an ABET accredited program with academic coursework in thermodynamics, fluid mechanics, and heat transfers

  • A minimum of 5 years of experience in the power industry

  • Working knowledge of codes, standards, and regulations that apply to mechanical engineering design of nuclear power plants

  • PE license is beneficial, but not required

Technology & Innovation

Sargent & Lundy values the appropriate use of technology to improve how work gets done and deliver high-quality outcomes for our clients. Depending on the role, employees may use data, automation, artificial intelligence, and other digital tools to support research, analysis, engineering and design activities, workflow improvement, or other aspects of their work. We value candidates who demonstrate an interest in learning and effectively using emerging technologies where relevant to their role. Employees remain accountable for their work and are expected to apply appropriate professional judgment and review when using technology-assisted tools. Experience with AI, automation, programming, or similar technologies is valued where relevant but is not required unless specifically identified elsewhere in the job description.

About Sargent & Lundy

At Sargent & Lundy, we care about the health and well-being of our employees. Our commitment extends beyond the workplace, offering comprehensive healthcare plans and generous paid time off to support our team members in every aspect of their lives. We understand the importance of work-life balance, which is why we are proud to provide competitive, award-winning benefits. Our dedication to employee satisfaction has earned us the prestigious Top Workplaces Culture Excellence Award for compensation and benefits in 2022, 2023, and 2024.

Health & Wellness Financial Benefits Work-Life Balance

  • Health Plans: Medical, Dental, Vision

  • Life & Accident Insurance

  • Disability Coverage

  • Employee Assistance Program (EAP)

  • Back-Up Daycare

  • FSA & HSA

  • 401(k)

  • Pre-Tax Commuter Account

  • Merit Scholarship Program

  • Employee Discount Program

  • Corporate Charitable Giving Program

  • Tuition Assistance

  • First Professional Licensure Bonus

  • Employee Referral Bonus

  • Paid Annual Personal/Sick Time (PST)

  • Paid Vacation

  • Paid Holidays

  • Paid Parental Leave

  • Paid Bereavement Leave

  • Flexible Work Arrangements

Compensation Range

$84,762 - $129,498

Transparency Statement

Sargent & Lundy discloses compensation ranges that comply with all local and state regulations. The total compensation package for eligible positions will include a base salary or an hourly rate and a comprehensive benefits package, reflecting our commitment to rewarding performance and supporting the overall well-being of our employees. Individuals may also be eligible to participate in our yearly discretionary bonus.

About This Business Unit

Join Sargent & Lundy's Nuclear Power Group and be part of a team driving the future of clean, carbon-free energy. Since 1954, we've been a trusted leader in nuclear engineering, design, and licensing, with expertise spanning small modular reactors (SMRs), advanced reactor technology (ART), and first-of-a-kind commercial reactor restart projects. Our work supports life extensions and digital modernization of existing nuclear plants, coal-to-nuclear conversion initiatives with the Department of State, and international nuclear new-build projects. With a commitment to safety, innovation, and sustainability, we provide cutting-edge solutions that power communities worldwide while reducing emissions. Shape the future of global energy with us!

Equal Opportunity

Sargent & Lundy is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability status, protected veteran status, or any protected status as defined by applicable law.

Software Powered by ICIMS

CityDistrict of Columbia

StateDC

CountryUnited States

Area of InterestMechanical Engineering

TypeFull Time - Regular

Job ID2026-27370

Business GroupNuclear Power Group

DepartmentMechanical Engineering

Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Senior Mechanical Engineer 1 - Nuclear in Washington DC vacancy
  • $100.02k - $152.81k

     ...Hybrid Work Role In Nuclear Power Plant Systems Design This role will offer a hybrid work arrangement...  ...nuclear power plants Functional mechanical drawings and/or drawings for nuclear power plant systems Engineering analyses and evaluations to support modifications... 
    Senior
    Hourly pay
    Work at office
    Local area
    Remote work
    Worldwide
    Flexible hours
    3 days per week

    Nuclear Power Group

    Washington DC
    4 days ago
  • $74.35k - $113.6k

     ...Piping Engineering & Analysis The Piping Engineering & Analysis discipline...  ...Vessel Code, ASME B31.1, ASME B31.7, and other codes...  ...Experience: ~ BS or MS in Mechanical Engineering, Engineering Mechanics...  ...Join Sargent & Lundy's Nuclear Power Group and be part of a... 
    Suggested
    Hourly pay
    Work at office
    Local area
    Worldwide
    Flexible hours
    3 days per week

    Nuclear Power Group

    Washington DC
    3 days ago
  •  ...Job Title: Safety Analysis Engineer, Nuclear Location: Bellevue, WA Type: Contract, 12 months Contractor Work Model: Remote Overview...  ...analysis software such as RELAP5, TRACE, TRAC, SAS4A/SASSYS-1, or similar Experience in transient and accident analysis... 
    Senior
    Contract work
    Temporary work
    For contractors
    Local area
    Remote work

    System One

    Washington DC
    a month ago
  • $70 - $95 per hour

     ...Complex. Simplexity is a product development engineering firm, hired by leading technology...  ...DESCRIPTION Simplexity is seeking a hands-on senior mechanical engineer to work embedded with our team...  ...~401(k) plan with company match after 1,000 hours of service ~ Long-term and... 
    Senior
    Hourly pay
    Contract work
    Temporary work
    For contractors

    Simplexity Product Development

    Washington DC
    a month ago
  • $135k - $190k

     ...TSC is seeking a highly motivated and skilled Senior Mechanical Engineer to support work at the Naval Research Laboratory. This position offers...  ...subcontractor shall abide by the requirements of 41 CFR 60-1.4(a), 60-300.5(a) and 60-741.5(a). These regulations prohibit... 
    Senior
    For contractors
    Work experience placement
    For subcontractor
    Flexible hours

    Technology Service Corporation

    Washington DC
    1 day ago
  • $100k - $137k

     ...radios, and more.Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-...  ...some of the boldest and most ambitious space missions.SENIOR MECHANICAL ENGINEER IAs a Mechanical Engineer at Rocket Lab’s Silver Spring, Maryland... 
    Senior
    Permanent employment
    Local area
    Flexible hours

    Rocket Lab

    Silver Spring, MD
    4 days ago
  • $56 - $95 per hour

     ...Job Title: Senior Welding Engineer Location: Bellevue, WA Type: Contract...  ...qualify welding techniques for nuclear reactor core internals for a...  ...of welds, including mechanical properties, burst testing, thermal...  ...supplier audits per ASME NQA-1-2015 Requirements Minimum... 
    Senior
    Contract work
    Temporary work
    For contractors
    Local area

    System One

    Washington DC
    a month ago
  • $69 - $115 per hour

    Job Title: Senior Safety Methods Engineer (Accident/Transient Methods) Type: Contract (yearlong) Compensation...  ...and Skills M.S. or Ph.D. in nuclear engineering, or other relevant...  ...Reactors under Regulatory Guide (RG) 1.233 is strongly preferred. Familiarity... 
    Senior
    Hourly pay
    Contract work
    For contractors
    Local area
    Remote work

    System One

    Washington DC
    more than 2 months ago
  • $155k - $183k

     ...Overview We are seeking a Senior Pipe Stress Engineer to join our team in...  ...industrial systems per B31.1 and B31.3 respectively....  ...plants. About you B.S. Mechanical Engineering, Civil Engineering...  ...-cycle, Rakine cycle, or nuclear power plant design experience... 
    Senior
    Full time
    Temporary work
    Work at office
    Remote work
    Flexible hours

    AtkinsRéalis

    Washington DC
    more than 2 months ago
  • $103.2k - $159.6k

     ...Senior Marine Structural Engineer Seattle, PortlandRegular, Full TimeHybridAre you interested in joining a prestigious engineering consulting firm that...  ...70- Posted27/08/2026-Water & Environment-Posting Country (1)United StatesPosting Location (2)Seattle, WA , Portland,... 
    Senior
    Full time
    Local area
    Work from home
    Worldwide
    Flexible hours

    COWI

    Washington DC
    a month ago
  • $130k - $155k

     ...Job Description Job Description ROLE OVERVIEW: A leading engineering consulting organization is seeking a Senior Mechanical Engineer with strong HVAC and plumbing design experience to join its Washington, DC office. This role offers the opportunity to step... 
    Senior
    Work at office

    Nova Talent Solutions

    Washington DC
    a month ago
  • $137.3k - $185.7k

     ...'s possible in robotic manipulation, locomotion, and human-robot interaction. Amazon is seeking a talented and motivated Senior Mechanical Engineer to drive the design, development, and launch of novel robotics hardware. The ideal candidate will have experience in mechanism... 
    Senior
    Contract work
    Flexible hours

    Amazon

    Washington DC
    27 days ago
  •  ...Mechanical Engineer Opportunity Are you ready to put your mechanical engineering expertise to work on projects that matter? LRS Federal LLC is seeking a seasoned Mechanical Engineer to join our growing team. If you thrive on tackling complex challenges, delivering innovative... 
    Senior
    Flexible hours

    LRS Federal

    Bethesda, MD
    1 day ago
  • $126.2k - $264.1k

     ...long-term asset performance rather than mechanical system design. A key objective of this position...  ...Partner closely with Facility Managers, Engineering, Reliability, Controls, Construction, and...  ..., or large commercial infrastructure. ~1–3+ years of experience leading... 
    Senior
    Temporary work
    For contractors
    Relocation
    Relocation package
    Flexible hours

    Oracle

    Washington DC
    21 hours ago
  •  ...Aerodyne Industries is a dynamic, rapidly growing engineering and information technology services firm headquartered on Florida's exciting...  ...for preliminary design phase planning and execution of the mechanical, opto-mechanical, and electro-mechanical sub-system and... 
    Senior

    Aerodyne Industries

    Greenbelt, MD
    3 days ago
  •  ...Senior Mechanical Engineer We are hiring for a Senior Mechanical Engineer with 8+ years of HVAC and Plumbing design experience to join our Washington D.C. team! We are looking for a licensed Professional Engineer with experience in all aspects of design and documentation... 
    Senior
    Work at office
    Local area

    Selectek

    Washington DC
    21 hours ago
  • $135k - $190k

     ...Job Description Job Title: Senior Mechanical Engineer Position Description: Protingent Staffing has an exciting direct hire Senior Mechanical Engineer with our client located in Washington, DC. Job Description: Seeking a highly motivated and skilled Senior... 
    Senior
    Work experience placement

    Protingent

    Washington DC
    1 day ago
  •  ...Senior Mechanical Engineer The Senior Mechanical Engineer position is a full-time exempt position. The Senior Mechanical Engineer will be responsible to develop mechanical designs and/or drawings, performing structural analysis, and support manufacturing and hardware... 
    Senior
    Full time
    Local area

    Cummings Aerospace

    Arlington, VA
    2 days ago
  •  ...\tClient is seeking Equipment and Tool Engineers to support multiple positions across our...  ...on the production floor, interacting with mechanics, safety, and tool makers, and directly supporting...  ...and application of NBIC codes Part 1, 2, 3, & 4 \tApplication of piping codes... 
    Work experience placement
    Remote work
    Relocation

    Systemart LLC

    Washington DC
    a month ago
  • $112.5k - $163k

     ...Senior Mechanical Design Engineer QuantumScape is on a mission to transform energy storage with solid-state lithium-metal battery technology. The company's next-generation batteries are designed to enable greater energy density, faster charging and enhanced safety to... 
    Senior

    QuantumScape Corporation

    Washington DC
    21 hours ago
  • $165.61k - $253.02k

     ...giving you the flexibility to work remotely for two days. Nuclear power is a carbon-free energy source. Our nuclear power generation...  ...). This is expanding work in the Instrumentation and Controls Engineering group. You will work on major process controls engineering... 
    Senior
    Hourly pay
    Contract work
    Work at office
    Local area
    Remote work
    Worldwide
    Flexible hours
    3 days per week

    Nuclear Power Group

    Washington DC
    4 days ago
  •  ...Senior Mechanical Engineer This position supports U.S. Department of Defense contracts that legally require all personnel to be U.S. citizens. Candidates who are not U.S. citizens will not be considered. Location: NSWC-Crane, IN Position Type: Full-Time Travel Requirements... 
    Senior
    Full time

    Created Solutions

    Arlington, VA
    21 hours ago
  • $90k - $120k

     ...Start designing tomorrow's future! Buro Happold has an exciting opportunity for a talented Senior Mechanical Engineer to join our hybrid team in Washington, DC! As a Senior Mechanical Engineer you will have the opportunity to lead design for mechanical engineering... 
    Senior
    Summer work
    Immediate start
    Flexible hours

    BuroHappold

    Washington DC
    4 days ago
  •  ...efficient, sustainable, and cost-effective. Through innovative HVAC engineering, electrical upgrades, building automation systems,...  .... About the Position Our client is seeking an experienced Senior Mechanical Engineer to lead the design and engineering of complex HVAC... 
    Senior
    For contractors

    Kimmel & Associates

    Washington DC
    21 hours ago
  • $120k - $148k

     ...ARA is seeking a Senior Mechanical Engineer to support the design of equipment, tooling, and equipment interfaces for energetics chemical manufacturing systems and unmanned systems (UxS) programs supporting U.S. Government customers. This role spans a broad range of mechanical... 
    Senior
    Full time

    Applied Research Associates

    Arlington, VA
    21 hours ago
  • $140k - $180k

     ...Senior Mechanical Engineer At EXP, we're driven to provide innovative solutions for the world's built and natural environments. As a team of engineers, architects, designers, scientists, creators, and a community of professionals, we bring diverse and talented people... 
    Senior
    Full time

    EXP

    Washington DC
    4 days ago
  • $130k - $190k

     ...Job Title Senior Mechanical Engineer Location Bethesda, MD 20800 US (Primary) Category Research, Development, and Engineering Job Type Full-Time Career Level Staff Education Bachelor's Degree Travel Security Clearance Required... 
    Senior
    Full time

    Prescient Edge

    Bethesda, MD
    1 day ago
  • DescriptionThe Senior Mechanical Engineer will lead mechanical design project teams in Richland, WA to create world-class designs for new projects, alterations and redevelopments on a variety of equipment and infrastructure projects that will primarily support the local... 
    Senior
    For contractors
    Work at office
    Local area

    Burns & McDonnell

    Washington DC
    a month ago
  • $110k - $125k

     ...and repair programsResponsibilitiesAs a Senior Naval Architect you will:Provide technical...  ...for major acquisition efforts.Review engineering designs and shipbuilder deliverables for...  ...Marine Engineering, Naval Architecture, Mechanical Engineering, or related technical field... 
    Senior
    Work at office
    Remote work

    American Systems

    Washington DC
    21 hours ago
  • $150k - $190k

     ...Title: Senior Mechanical Design Engineer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this... 
    Senior
    Local area
    Remote work
    Flexible hours

    KBR

    Washington DC
    3 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Mechanical Engineer 1 - Nuclear. Be the first to apply!