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

Senior Mechanical Design Engineer

System One

Position Overview: System One is seeking a Senior Mechanical Design Engineer to support the Molten Chloride Fast Reactor (MCFR) program and the Molten Chloride Reactor Experiment (MCRE) . This role plays a key part in designing and analyzing mechanical systems that support both the non‑nuclear MCRE mockup and the delivery of qualified MCRE hardware . The successful candidate will collaborate closely with vendors, project engineers, and technical leads to help deliver hardware for the first liquid‑fueled, fast‑spectrum reactor to be constructed and operated at Idaho National Laboratory . Key Responsibilities: Create 3D models of systems, structures, and components using CAD tools (SolidWorks preferred). Conduct mechanical analyses including hand calculations and finite element analysis (ANSYS preferred). Develop engineering drawings in compliance with ASME Y14.1 and Y14.5 standards. Draft and maintain technical documentation such as design specifications, mechanical load descriptions, and reports. Support planning and scheduling of design activities. Review vendor submittals and manage technical coordination with suppliers. Present design concepts and analysis results to internal teams and stakeholders. Qualifications: B.S. in Mechanical Engineering or related discipline from an accredited university with 6+ years of relevant experience. M.S. in Mechanical Engineering or related discipline with 3+ years of experience. EIT certification or PE license preferred. Proficiency in CAD software (SolidWorks preferred). Experience using mechanical analysis tools (ANSYS preferred). Demonstrated success in delivering qualified hardware and documentation packages. Strong attention to detail in reviewing technical documents, drawings, and calculations. Experience working within a formal quality program (NQA-1 or ISO 9001 preferred). Excellent verbal and written communication skills. Ability to work in a highly collaborative, multidisciplinary environment. Job Functions and Working Conditions: Motor Abilities: Sitting or standing for extended periods, bending/stooping, fine motor control, grasping/gripping. Physical Requirements: Minimal physical exertion; must be able to safely lift up to 25 lbs. Work Environment: Office-based, computer-intensive work; may include stairs and typing/keyboarding for extended periods. Work Hours: Standard 8+ hour workdays. Travel: Occasional (0–5%). System One offers eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #J-18808-Ljbffr System One

Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Senior Mechanical Design Engineer in Bellevue, WA vacancy
  • $56 - $95 per hour

    Protingent Staffing has an exciting contract Senior Mechanical Design Engineer opportunity. Job Responsibilities Design of reactor structures and components from requirements through final design. Coordinate inputs and requirements from Engineering and Project teams to... 
    Senior
    Permanent employment
    Contract work
    Work experience placement
    For subcontractor
    Remote work

    Protingent

    Bellevue, WA
    1 day ago
  • $140k - $160k

     ...Complex. Simplexity is a product development engineering firm, hired by leading technology companies to design their next generation products. In an industry...  ...place for you. POSTION DESCRIPTION As a Senior Mechanical Design Engineer, you would be working with and... 
    Senior
    Full time
    Contract work
    Temporary work
    Casual work
    Work at office
    Flexible hours

    Simplexity Product Development

    Seattle, WA
    a month ago
  • $104k - $170k

     ...Job Description Job Description SENIOR MECHANICAL DESIGN ENGINEER At Andrews Cooper, we specialize in delivering cutting-edge engineering solutions in the HardTech space, partnering with industry leaders in Consumer Technology, Medical Technology, Clean Technology... 
    Senior
    Full time
    Work at office
    Flexible hours

    Andrews Cooper Technology LLC

    Bothell, WA
    15 days ago
  • $145.19k - $203.26k

     ...and increasing mobility on-orbit.As a senior member of the TeraWave propulsion...  ...is a satellite communications network designed to deliver symmetrical data speeds of...  ...for critical operations.As a Senior Mechanical Design Engineer, you will lead the development of the... 
    Senior
    Permanent employment
    Temporary work
    Local area
    Relocation

    Blue Origin LLC

    Seattle, WA
    4 days ago
  • Romac Industries, Inc. is seeking a Senior Mechanical Engineer in Bothell, WA, to lead the design and development of new products and improvements. The ideal candidate has a Bachelor’s degree in Engineering and at least 5 years of experience in mechanical engineering. You... 
    Senior

    Romac Industries, Inc.

    Bothell, WA
    1 day ago
  • $140k - $160k

    A product development engineering firm in Seattle is seeking a Senior Mechanical Design Engineer to lead teams in designing complex products like robotics and medical devices. Ideal candidates should have a Bachelor's or Master's in Mechanical Engineering and 8+ years of... 
    Senior

    Simplexity Product Development

    Seattle, WA
    5 days ago
  • $86.9k - $136.3k

     ...global technology leader in the design, manufacture and customer...  ...manufactures advanced diesel engines and also provides customized...  ...will be focused on developing mechanical systems in support of new product...  ...are provided with additional seniority/years of service), 12 paid... 
    Senior
    Full time
    Temporary work
    Flexible hours

    PACCAR

    Kirkland, WA
    3 days ago
  • $75 - $85 per hour

     ...Description Job Description Fresh Consulting is a design-led, software development and hardware engineering company, offering end-to-end digital services to...  ...or visit freshconsulting.com/careers Title: Senior Mechanical Engineer  Location: Onsite in Redmond, WA... 
    Senior
    Full time

    Fresh Consulting

    Redmond, WA
    a month ago
  • $156.8k - $219.52k

     ...spaceflight! This role is part of the Blue Origin Engines business unit, where our focus is the design, development, manufacturing, and testing of engines...  ...repeatable spaceflight. Responsibilities: Develop mechanical enclosures for avionics products Create, run and evaluate... 
    Senior
    Permanent employment
    Full time
    Temporary work
    Local area
    Immediate start

    BLUE ORIGIN

    Seattle, WA
    2 days ago
  • $115k - $150k

     ...Description At Coffman Engineers, we serve as both prime consultant...  ...of civil, structural, mechanical, electrical, fire protection,...  ...on our clients’ success. As a Senior Mechanical Engineer at Coffman...  ...approaches, managing projects through design and execution, and focusing... 
    Senior
    Full time
    Local area
    Overseas
    Flexible hours

    Coffman Engineers, Inc.

    Seattle, WA
    4 days ago
  • $109k - $150k

     ...Description Summary Creates complex design of VIP aircraft interiors and/or structures...  ...and Responsibilities Designs complex mechanical aircraft interior furnishing and/or...  ...knowledge, and works with Manufacturing Engineers to optimize designs for reduced parts counts... 
    Senior
    Permanent employment
    Full time
    Shift work

    Greenpoint Technologies

    Bothell, WA
    a month ago
  • $100k - $120k

     ...Salary: $100,000.00-$120,000.00 Join PBS Engineers and Help us Transform The Industry...  ...Boat Extra Mile and Then Some Senior Mechanical Engineer Roles and Responsibilities...  ...candidate will have knowledge in HVAC system design, project coordination, and industry codes... 
    Senior
    Full time
    Temporary work
    For contractors
    Work at office
    Local area
    Immediate start
    Flexible hours

    PBS Engineers, Inc.

    Seattle, WA
    a month ago
  • $130k - $150k

     ...data centers and mission-critical environments to validate that systems are designed, installed, and performing at the highest level.    We are seeking a Senior Mechanical Project Engineer who brings deep technical expertise, field leadership, and the ability to... 
    Senior
    Daily paid
    Full time
    For contractors
    Relocation

    FST Technical Services

    Seattle, WA
    a month ago
  • A leading semiconductor manufacturing firm in Washington is seeking an experienced Principal Equipment Engineer to enhance manufacturing performance. You will work closely with teams to improve tool availability and repair processes, ensuring adherence to quality standards... 
    Senior

    TSMC - Taiwan Semiconductor Manufacturing Company Limited

    Seattle, WA
    1 day ago
  • $117.8k - $176.8k

    Your Opportunity The MCF (Mission Critical Facilities) Senior Project Engineer, Mechanical guides the technical design of our data center projects as subject matter expert, mentor, and resource to the technical team. Position delegates, leads, and directs work of Project... 
    Senior
    Full time
    Temporary work
    Part time
    Casual work
    Local area
    Flexible hours

    Stantec Consulting International Ltd.

    Seattle, WA
    5 days ago
  •  ...science experiment. Built by engineers from mining, construction,...  ...unpredictable jobsite conditions. Mechanical engineering is at the...  ...electrical, and software systems. We design mechanical systems that...  ...excites you, you're the kind of Senior Mechanical Engineer who will... 
    Senior

    AIM Intelligent Machines

    Seattle, WA
    5 days ago
  • A leading staffing agency is seeking a highly skilled Mechanical Test Engineer in Redmond, Washington. This role involves defining and executing mechanical verification methodologies for consumer electronic devices. The ideal candidate will collaborate with various teams... 
    Senior

    Insight Global

    Redmond, WA
    4 days ago
  •  ...Position Overview: System One is seeking a Senior Mechanical Design Engineer to support the Molten Chloride Fast Reactor (MCFR) program and the Molten Chloride Reactor Experiment (MCRE) . This role plays a key part in designing and analyzing mechanical systems that... 
    Senior
    Contract work
    Work at office

    System One

    Bellevue, WA
    a month ago
  • A leading engineering firm is seeking a Senior Safety Methods Engineer in Bellevue, WA. You will develop methodologies and conduct transient and accident analyses within a multidisciplinary engineering team. The ideal candidate will possess an M.S. or Ph.D. in nuclear... 
    Senior

    Talascend, LLC

    Bellevue, WA
    4 days ago
  • $74.99 - $87.31 per hour

    Position Description Seattle City Light's Engineering & Technology Operations Division is seeking a Senior Mechanical Engineer to ensure reliable operation of hydro turbine...  ...In this position, you will be responsible for design changes, maintenance and construction of... 
    Senior
    Hourly pay
    Work experience placement
    Night shift
    Weekend work
    Afternoon shift

    Accreditation Council for Graduate Medical Education

    Seattle, WA
    1 day ago
  • $120k - $165k

    A leading engineering firm is seeking a Hydro Mechanical Engineer with strong design and commissioning expertise in hydro turbines and BOP systems. Responsibilities include mechanical design, technical review, and site commissioning support. The ideal candidate will have... 
    Senior
    Remote job

    ENTRUST Solutions Group

    Seattle, WA
    3 days ago
  • A leading engineering firm in the U.S. is seeking an experienced Mechanical Engineer to lead design projects within the Power & Energy sector. The role involves complex engineering tasks, project management from inception to completion, and support for diverse technical... 
    Senior

    WSP in the U.S.

    Seattle, WA
    3 days ago
  • $183.81k - $257.33k

     ...crew and cargo from Earth to the lunar surface. As a Senior Manager of Vehicle System Engineering and Integration for the MK2 Crew Lander you will manage a team of engineers that perform the integrated design, analysis, verification, validation, and certification for... 
    Senior
    Permanent employment
    Temporary work
    Local area

    Blue Origin

    Seattle, WA
    1 day ago
  • A leading engineering firm in Seattle is seeking a highly motivated Senior Traction Power Engineer to join their Infrastructure group. In this role, you'll lead junior engineers and design traction power systems, including substations and control circuits. The ideal candidate... 
    Senior

    Hatch Ltd.

    Seattle, WA
    3 days ago
  • $189.6k - $260.7k

     ...A leading software development company is looking for a Senior Software Engineer focused on AI Tools & Security. This role involves leading the technical direction of key products and collaborating across teams to enhance developer experiences. Ideal candidates should... 
    Senior
    Remote work

    Docker

    Seattle, WA
    3 days ago
  • $74.99 - $87.31 per hour

    A leading municipal utility in Washington is seeking a Senior Mechanical Engineer to ensure the reliable operation of hydro turbine generating units. Responsibilities include maintenance, design changes, and engineering support. The ideal candidate should have five years... 
    Senior
    Hourly pay

    Accreditation Council for Graduate Medical Education

    Seattle, WA
    1 day ago
  •  ...A global software company is seeking a Senior Software Engineer to lead the technical direction of their AI and security products. You will work in a fast-paced environment, contributing to the development of the MCP Gateway. Ideal candidates have 4+ years of backend... 
    Senior
    Remote work
    Home office

    Docker

    Seattle, WA
    3 days ago
  • $160k - $190k

    RadNet, Inc. is looking for a Senior Crane Electrical Engineer in Seattle, responsible for the design and maintenance of electrical systems for crane operations. This hybrid role focuses on optimizing control systems and ensuring safe, efficient operations. The ideal candidate... 
    Senior
    Local area

    RadNet, Inc.

    Seattle, WA
    1 day ago
  • $156k - $172.9k

     ...working closely with Manufacturing, module engineers, and technicians to improve overall area...  ...or foreign equivalent in Chemical, Mechanical, Electrical, or Electronic Engineering and...  ...experience in a related position. Must have senior level equipment engineering experience... 
    Senior
    Remote work
    Relocation package
    Monday to Friday
    Shift work

    TSMC - Taiwan Semiconductor Manufacturing Company Limited

    Seattle, WA
    1 day ago
  • $190k - $282k

     ...Senior Security Production Engineer Livingston, NJ / New York, NY / Sunnyvale, CA / Bellevue, WA / San Francisco, CA CoreWeave is The Essential...  ...a Production Engineer, Security at CoreWeave, you will design, build, and operate the systems that keep our platform secure... 
    Senior
    Permanent employment
    Temporary work
    Casual work
    Work at office
    Remote work
    Flexible hours

    CoreWeave

    Bellevue, WA
    5 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Mechanical Design Engineer. Be the first to apply!