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  • Principal or Senior Principal Mechanical Engineer

    $98,800-$185,000 Full Time

    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of the Time Description At Northrop...

  • Principal/Senior Principal Electromechanical Design Engineer

    $105,400-$196,700 Full Time

    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities...

  • Senior Principal Mechanical Systems Engineer

    $135,800-$203,600 Full Time

    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: No CLEARANCE TYPE: SCI TRAVEL: Yes, 10% of the Time Description At Northrop Grumman,...

  • Senior Principal Mechanical Engineer

    Salary not listed Full Time
  • Senior Principal Opto-Mechanical Engineer

    Salary not listed Full Time
  • Senior Principal Mechanical Engineer, Development

    $132,962-$226,035 Full Time

    BAE Systems is seeking a Senior Principal Mechanical Engineer to join our team in Nashua, NH! “We Protect Those Who Protect Us®” is our mission,...

  • Engineer Senior Principal – Spacecraft Mechanical Design Lead

    $132,962-$226,035 Full Time

    The Engineering, Science and Analysis (ESA) Strategic Capabilities Unit comprises the technical talent and organizational leadership that enables the successful delivery of high-impact discriminating technologies...

  • Mechanical Engineering Lead – Senior Principal Mechanical Engineer – Sign on Bonus!

    $132,962-$226,035 Full Time

    BAE Systems, a rapidly expanding leader in the defense sector, is seeking a Senior Principal Mechanical Engineer to join our innovative team. We are seeking...

  • Senior Principal Opto-Mechanical Engineer

    $132,962-$226,035 Full Time

    Thank you for your interest in BAE Systems! This opening is included as part of our June 2026 Countermeasure & Electromagnetic Attack Solutions Engineering Hiring...

  • Senior Principal Opto-Mechanical Engineer

    $132,962-$226,035 Full Time

    Thank you for your interest in BAE Systems! This opening is included as part of our June 2026 Countermeasure & Electromagnetic Attack Solutions Engineering Hiring...

  • Production Support Hardware Lead – Senior Principal Mechanical Engineer

    $132,962-$226,035 Full Time

    See what you’re missing. Our employees work on the world’s most advanced electronics – from detecting threats for F-35 pilots to illuminating the night for...

  • Senior Principal Mechanical Engineer

    Salary not listed Full Time

    CHAOS is seeking a Senior Principal Mechanical Engineer to serve as the mechanical authority and provide high-value, hands-on mechanical expertise for the integration of ruggedized...

  • Senior Principal Mechanical Engineer, Platform Integration

    Salary not listed Full Time

    CHAOS is seeking a Senior Principal Mechanical Engineer – Platform Integration to serve as the mechanical authority and provide high-value, hands-on mechanical expertise for the...

  • Principal/Senior Principal Mechanical Engineer

    Salary not listed Full Time

    CHAOS is seeking an experienced Principal or Sr Principal Mechanical Engineer to lead the design, development, and integration of advanced missile and UAV launcher systems....

  • Principal Water Treatment Engineer, Solar Cell Factory

    Salary not listed Full Time

    PRINCIPAL WATER TREATMENT ENGINEER, SOLAR CELL FACTORY (STARLINK) SpaceX is developing a low-latency, broadband internet system to meet the needs of consumers across the globe....

  • Principal Antenna Engineer (Starlink)

    Salary not listed Full Time

    SpaceX is leveraging our experience building rockets and spacecraft to deploy Starlink, the world's most advanced broadband internet system. Starlink is the world's largest satellite...

  • Sentinel Principal Manufacturing Engineer (17204)

    $89,400-$134,200 Full Time

    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities...

  • Principal or Sr. Principal Mechanical Systems Engineer (Naval Architect)

    $108,800-$203,600 Full Time

    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: SCI TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities...

  • Principal / Sr Principal Technical Services Project Management

    $114,000-$213,400 Full Time

    RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities to...

  • Sentinel Sr Principal Structural Engineer – 16690*

    $122,800-$184,200 Full Time

    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities...