Principal Mechanical Engineer Jobs in Seattle, WA

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Principal Engineer - Mechanical Engineering (Hybrid)

RTX Corporation

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Remote or Windsor, Connecticut, USA

Full-time

Date Posted: 2025-07-16 Country: United States of America Location: 02: Building 02 Windsor Locks One Hamilton Road, Windsor Locks, CT, 06096 USA Position Role Type: Hybrid U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: None/Not Required Looking to make an impact in engineering? Join our Hydro-Mechanical, Actuation & Pneumatic Valve Design Group as a Mechanical Design Engineer. You'll play a key role in developing innovative solutions for critical component
Posted 5 days ago | Updated 3 hours ago

Principal Mechanical Project Engineer - Hybrid

Johnson Controls, Inc.

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Remote or York, Pennsylvania, USA

Full-time

Hybrid work opportunity - Consideration given to applicants within a commutable distance from York, PA. or must be willing to relocate. Build your best future with the Johnson Controls team! Who We Are: As a global leader in smart, healthy and sustainable buildings, our mission is to reimagine the performance of buildings to serve people, places and the planet. Join a winning team that enables you to build your best future! Our teams are uniquely positioned to support a multitude of industries
Posted 10 days ago | Updated 3 hours ago

Staff Mechanical Engineer R&D

Johnson & Johnson

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Remote or Santa Clara, California, USA

Part-time

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn m
Posted 2 days ago | Updated 3 hours ago

Lead Mechanical Engineer 1 - Nuclear

Sargent & Lundy LLC.

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Remote

Full-time

Description You will be involved in nuclear power plant systems design, including preparation or review of: Modification packages for operating nuclear power plantsFunctional mechanical drawings and/or drawings for nuclear power plant systemsEngineering analyses and evaluations to support modifications and operation of plant systemsTechnical specifications and procurement documents for plant equipmentVendor bid evaluations for plant equipmentStudies and options evaluations for modifications to
Posted 5 days ago | Updated 3 hours ago

Lead Mechanical Engineer 2 - Government Services

Sargent & Lundy LLC.

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Remote

Full-time

Description This is a remote position with the expectation of frequent travel to a client site near Oak Ridge, Tennessee. This is a mid-level design engineering position that offers a variety of challenging opportunities in Mechanical Engineering and will provide an excellent opportunity for career advancement: Lead Mechanical design engineering efforts on a multi-disciplined project design team and apply mechanical engineering expertise to the design and analysis of special purpose equipment,
Posted 8 days ago | Updated 3 hours ago

Lead Mechanical Engineer 2 - Government Services

Sargent & Lundy LLC.

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Remote or Oak Ridge, Tennessee, USA

Full-time

Description This is a remote position with the expectation of frequent travel to a client site near Oak Ridge, Tennessee. This is a mid-level design engineering position that offers a variety of challenging opportunities in Mechanical Engineering and will provide an excellent opportunity for career advancement: Lead Mechanical design engineering efforts on a multi-disciplined project design team and apply mechanical engineering expertise to the design and analysis of special purpose equipment,
Posted 15 days ago | Updated 3 hours ago

Lead Mechanical Engineer 1 (Power Uprates) - Nuclear

Sargent & Lundy LLC.

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Remote

Full-time

Description Our electric power generation clients are seeking to increase the power output of their existing power plants to meet the electric demands. This is expanding work in the nuclear industry. You will work on major systems, equipment and plant process in the following areas: Perform consulting level work for power uprates in the nuclear industry.Interface with clients and project teams to present technical discussions and project status.Develop engineering proposals and cost estimates.M
Posted 17 days ago | Updated 3 hours ago

Staff Mechanical Engineer - R&D Robotics

Johnson & Johnson

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Remote or Santa Clara, California, USA

Full-time

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn m
Posted 50 days ago | Updated 3 hours ago

Lead generator mechanical engineer

GE Vernova

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Remote

Full-time

Job Description Summary The Lead Generator Mechanical Engineer will be responsible for the design of hydro generator mechanical components for installed based projects. He/she will also be responsible to provide technical support for supply chain and site activities related to hydro generators. Job Description About Us: We are a purpose-built company leading a new era of energy - electrifying the world while simultaneously working to help decarbonize it! Our culture is built on inclusivity, d