"Mechanical Principal Engineer" Jobs in United States

Principal Mechanical Engineer

McDermott Middle East, Inc. - Jebel Ali (UAE) · Houston

Job Overview: Mechanical Engineer will be responsible for specification, selection, analysis, and technical oversight of rotating equipment and packaged equipment for the project Qualifications Essential Qualifications a

Principal Mechanical Engineer

RTX · Portsmouth

Date Posted: 2026-10-26 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 a

Job Overview: Mechanical Engineer will be responsible for specification, selection, analysis, and technical oversight of rotating equipment and packaged equipment for the project Qualifications Essential Qualifications a

Principal Mechanical Engineer

Clera · San Francisco

About the Role Join a small defense technology engineering team developing autonomous, field-deployed directed energy systems. As Principal Mechanical Engineer, you will own system-level mechanical architecture and help

Principal Mechanical Engineer

CHAOS Industries · El Segundo

CHAOS Industries is redefining modern defense with a multi-product portfolio that gives the ultimate advantage—domain dominance. The company's products are powered by Coherent Distributed Networks (CDNTM), empowering war

Principal Engineer Mechanical

Zachry Maintenance Services, LLC · Downers Grove

This is a great opportunity to get involved with exciting and challenging Engineering Services and EPC projects. Qualifications REQUIREMENTS Bachelor’s degree in Mechanical Engineering Professional Engineers License 15 p

Principal Mechanical Engineer

CHAOS Industries · El Segundo

CHAOS Industries is redefining modern defense with omniscient systems purpose-built for today’s realities. Designed and built by top U.S. military veterans and Silicon Valley innovators, CHAOS Industries’ products are po

Principal Engineer Mechanical

Zachry Maintenance Services, LLC · Downers Grove

This is a great opportunity to get involved with exciting and challenging Engineering Services and EPC projects. Qualifications REQUIREMENTS Bachelor’s degree in Mechanical Engineering Professional Engineers License 15 p

Mechanical Engineer Principal

General Dynamics Information Technology ·

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Professional Engineering Job Qualifications: Skills

Mechanical Engineer Principal

General Dynamics Information Technology ·

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Professional Engineering Job Qualificatio

Mechanical Engineer Principal

General Dynamics Information Technology ·

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Professional Engineering Job Qualifications: Skills

Mechanical Engineer Principal

General Dynamics Information Technology ·

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Professional Engineering Job Qualificatio

Principal Engineer Mechanical

Zachry Maintenance Services, LLC · Downers Grove

This is a great opportunity to get involved with exciting and challenging EPC Power Projects. Qualifications REQUIREMENTS Bachelor’s degree in mechanical engineering or related engineering field. Professional Engineers L

Principal Engineer Mechanical

Zachry Maintenance Services, LLC · Downers Grove

This is a great opportunity to get involved with exciting and challenging EPC Power Projects. Qualifications REQUIREMENTS Bachelor’s degree in mechanical engineering or related engineering field. Professional Engineers L

Principal Mechanical Engineer

AMD · San Jose

ADVANCE YOUR CAREER. ADVANCE THE WORLD. At AMD, we believe technology has the power to solve the world’s most important challenges. From advancing healthcare and scientific discovery to powering AI and the technologies p