Browse Jobs
Browse fresh roles from company career pages, then filter by keyword, location, salary, skills, remote scope, and more. Each listing links back to the employer-controlled apply path when available.
289 jobs match your filters
4w
Principal Mechanical Engineer
Cavendish Nuclear
Job Title: Principal Mechanical Engineer Location: Flexible, UK + Hybrid Working Arrangement Compensation: Competitive Salary+ Benefits Role Type: Full time / Permanent Role ID: SF71562
Warrington, GB, WA3 6YD +1 more…
onsite
4w
Principal Mechanical Engineer
Cavendish Nuclear
Job Title: Principal Mechanical Engineer Location: Whitehaven, Cumbria + Hybrid Working Arrangements Compensation: Competitive + Benefits Role Type: Full time / Permanent Role ID: SF70329 Le
Egremont, Carlisle, GB, CA24 3HZ
onsite
4w
Principal Mechanical Engineer
Babcock International Group
Job Title: Principal Mechanical Engineer Location: Whitehaven, Cumbria + Hybrid Working Arrangements Compensation: Competitive + Benefits Role Type: Full time / Permanent Role ID: SF70329 Le
Egremont, Carlisle, GB, CA24 3HZ
onsite
4w
Principal Mechanical Engineer
Babcock International Group
Job Title: Principal Mechanical Engineer Location: Warrington, Cheshire or Preston, Lancashire + Hybrid Working Arrangements Compensation: Competitive Salary + Benefits Role Type: Full time / Permanent Role ID:
Warrington, GB, WA3 6YD +1 more…
onsite
4w
Principal Mechanical Engineer
Babcock International Group
Job Title: Principal Mechanical Engineer Location: Flexible, UK + Hybrid Working Arrangement Compensation: Competitive Salary+ Benefits Role Type: Full time / Permanent Role ID: SF71562
Warrington, GB, WA3 6YD +1 more…
onsite
4w
Principal Mechanical Engineer
Babcock Canada Inc.
Job Title: Principal Mechanical Engineer Location: Warrington, Cheshire or Preston, Lancashire + Hybrid Working Arrangements Compensation: Competitive Salary + Benefits Role Type: Full time / Permanent Role ID:
Warrington, GB, WA3 6YD +1 more…
onsite
4w
Principal Mechanical Engineer
Babcock Canada Inc.
Job Title: Principal Mechanical Engineer Location: Whitehaven, Cumbria + Hybrid Working Arrangements Compensation: Competitive + Benefits Role Type: Full time / Permanent Role ID: SF70329 Le
Egremont, Carlisle, GB, CA24 3HZ
onsite
4w
Principal Mechanical Engineer
Babcock Canada Inc.
Job Title: Principal Mechanical Engineer Location: Flexible, UK + Hybrid Working Arrangement Compensation: Competitive Salary+ Benefits Role Type: Full time / Permanent Role ID: SF71562
Warrington, GB, WA3 6YD +1 more…
onsite
4w
Principal Mechanical Engineer
Red Cat Holdings
Position Summary Teal's Mechanical Engineers are responsible for their designs from conception to sustaining of released products. As a Principal Mechanical Engineer, you are responsible for the high-level mechanical system design of our product including a drone, gimbal/optical
Teal Drones - SLC, UT 84115
onsite
4w
Principal Mechanical Engineer
Fieldpiece Instruments
Build Something from the Ground Up Fieldpiece is hiring a Principal Mechanical Engineer who wants to do more than maintain existing products—you’ll lead the development of an entirely new product from concept through launch. This role is ideal for an engineer who enjoys turning
Orange, CA 92867
onsiteFull-time
4w
Principal Mechanical Engineer
Audubon Companies
Audubon is currently seeking a Part-time Mechanical Engineering Associate, Principal to join our team in our Metairie, LA Office. The Mechanical Engineering Associate, Principal will perform mechanical engineering assignments associated with designing equipment, components, struc
Metairie, LA
onsite
1mo
Principal Mechanical Engineer
Cundall
We are an award winning global consultancy and have been named Building’s Engineering Consultant of the Year in 2024, 2022 and 2021. We are at the forefront of the industry, priding ourselves on our exemplary track record of designing innovative and sustainable projects. Sustai
Manila
hybrid
1mo
Principal Mechanical Engineer
Cundall
We are an award winning global consultancy and have been named Building’s Engineering Consultant of the Year in 2024, 2022 and 2021. We are at the forefront of the industry, priding ourselves on our exemplary track record of designing innovative and sustainable projects. Sustain
Kuala Lumpur
remote
1mo
Principal Mechanical Engineer
Teal Drones
Position Summary Teal's Mechanical Engineers are responsible for their designs from conception to sustaining of released products. As a Principal Mechanical Engineer, you are responsible for the high-level mechanical system design of our product including a drone, gimbal/optical
SLC, UT 84115
onsite
1mo
Principal Mechanical Engineer
Columbia Energy & Environmental Services, Inc.
Principal Mechanical Engineer Location: Richland, WA Company: Columbia Energy & Environmental Services Salary: $120,000 – $180,000 DOE About Columbia Energy Columbia Energy & Environmental Services, headquartered in Richland, WA, is a well-established small business with a strong
Richland, Washington
onsiteFull-timeEasy Apply
1d
R
Principal Mechanical Engineer (m/w/d) innerhalb R&D Diagnostics
Roche
At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and profess
Mannheim
onsiteFull-timeNew
2d
A
Principal Mechanical Engineer (BSE)
Arcadis
Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life. Everyone has an important role to play. With th
Bucharest, Bucharest, RO
hybrid
2d
R
Principal Mechanical Engineer, Fluidics Research & Early Development
Roche
At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and profess
SANTA CLARA
remoteFull-time
3d
R
Principal Mechanical Engineer, Design
RTX
Date Posted: 2026-06-16

 Country: United States of America

 Location: US-RI-PORTSMOUTH-PS3 ~ 1847 W Main Rd ~ NIMITZ WEST BLDG

 Position Role Type: Onsite

 U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain an
US-RI-PORTSMOUTH-PS3 ~ 1847 W Main Rd ~ NIMITZ WEST BLDG
onsiteFull-time
4d
N
Principal Mechanical Engineer / Sr. Principal Mechanical Engineer 16934
Ngc
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact pe
United States-Utah-Roy
remoteFull-time
4d
N
Principal Mechanical Engineer / Sr. Principal Mechanical Engineer 16934
Northrop Grumman
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people
Roy, UT, US
remote
1w
R
Principal Mechanical Engineer – Hydraulics and Machine Design (Onsite)
RTX
Date Posted: 2026-06-12

 Country: United States of America Location: US-TX-RICHARDSON-461 ~ 3200 E Renner Rd ~ RENNER BLDG 461 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government
US-TX-RICHARDSON-461 ~ 3200 E Renner Rd ~ RENNER BLDG 461
onsiteFull-time
1w
R
Principal Mechanical Engineer – Electronics Packaging (Onsite)
RTX
Date Posted: 2026-06-11

 Country: United States of America Location: US-TX-RICHARDSON-461 ~ 3200 E Renner Rd ~ RENNER BLDG 461 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government
US-TX-RICHARDSON-461 ~ 3200 E Renner Rd ~ RENNER BLDG 461
onsiteFull-time
1w
Principal Mechanical Engineer I
CesiumAstro
Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligi
Westminster, CO$134K - $161K
hybridFull-timeEasy Apply
1w
B
Principal Mechanical Engineer, Process Equipment
Boston Materials
Boston Materials produces advanced materials with enhanced energy transfer properties using its patented Z-axis Carbon Fiber technology. The Company's products solve critical performance bottlenecks in applications spanning thermal, electrical, and structural use cases. Its bre
Billerica, MA$160K - $190K
onsiteFull-timeEasy Apply