• Principal Mechanical Engineer

    Actalent (Phoenix, AZ)
    Job Title: Principal Mechanical Engineer Job Description The Principal Mechanical Engineer will serve as a technical leader and Engineer of ... design, coordination, and construction phases. Responsibilities + Serve as Engineer of Record (EOR) for mechanical design...be willing to relocate. The role reports to the Principal Engineer and Senior VP of Operations.… more
    Actalent (12/30/25)
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  • Principal Mechanical Engineer

    RTX Corporation (Tucson, AZ)
    …secure world. The Shipboard Effectors Department is currently searching for an experienced Principal Mechanical Engineer to support Standard Missile products ... and subsystems. This Principal Mechanical Engineering position performs in alignment...Work under limited supervision and act as the responsible engineer often in a project management role over entire… more
    RTX Corporation (12/29/25)
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  • Principal Mechanical Engineer

    RTX Corporation (Tucson, AZ)
    …department technical processes and tools) and lead teams to meet program milestones **The Principal Mechanical Engineer -Structural Engineer job is in ... solutions. Raytheon is seeking an experienced Principal Structural Engineer to join the Mechanical Analysis and Test Department. In this role, you will be… more
    RTX Corporation (12/09/25)
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  • Senior Principal Mechanical

    RTX Corporation (Tucson, AZ)
    …documentation. The **Shipboard Effectors Department** is currently searching for an experienced **Senior Principal Mechanical Design Engineer ** to work on a ... tough, meaningful problems that create a safer, more secure world. The ** Mechanical ** engineering team leads in mechanical hardware design, development, and… more
    RTX Corporation (01/08/26)
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  • Sr. Principal Mechanical

    RTX Corporation (Tucson, AZ)
    …balanced solutions. Raytheon is seeking an experienced Senior Principal Structural Engineer to join the Mechanical Analysis and Test Department with a ... and tools) and lead teams to meet program milestones **The Senior Pr. Mechanical Engineer - Structural job is in Tucson, AZ and the position is onsite.**… more
    RTX Corporation (01/07/26)
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  • Senior Principal Mechanical

    RTX Corporation (Tucson, AZ)
    …balanced solutions. Raytheon is seeking an experienced Senior Principal Structural Engineer to join the Mechanical Analysis and Test Department. In this ... problems that create a safer, more secure world. **Job Summary** The Mechanical Analysis and Test (MA&T) Department is responsible for ensuring structural and… more
    RTX Corporation (12/16/25)
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  • Principal Mechanical Engineer

    RTX Corporation (Tucson, AZ)
    …ensure cost effective yet technically balanced solutions. Raytheon is seeking an experienced Principal Thermal Engineer to join the MA&T Department. The Thermal ... create a safer, more secure world. Job Summary The Mechanical Analysis and Test (MA&T) Department is responsible for...the use of finite element analysis software. A Thermal Engineer of this salary grade is expected to have… more
    RTX Corporation (01/08/26)
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  • Principal Mechanical Engineer

    RTX Corporation (Tucson, AZ)
    …group in the Shipboard Effectors Department is currently searching for an experienced Mechanical Design Engineer to work on a multi-discipline team to support ... in Tucson, AZ. **What You Will Do:** + Utilizing strong mechanical hardware design experience and knowledge with ruggedized structures, interconnects, cooling,… more
    RTX Corporation (12/29/25)
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  • Senior Principal RF Mechanical

    RTX Corporation (Tucson, AZ)
    …safer, more secure world. The RF Products Team at Raytheon is seeking a talented Engineer to join our team in Tucson, AZ. The candidate will be responsible for ... an onsite role, located in Tucson, AZ. **What You Will Do:** + Lead mechanical design activities involving RF hardware + Lead others by understanding team dynamics… more
    RTX Corporation (10/29/25)
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  • Senior Principal RF Mechanical

    RTX Corporation (Tucson, AZ)
    …Effector RF Design Team at Raytheon is seeking a talented and experienced **Senior Principal Engineer ** to join our innovative and collaborative team in Tucson, ... AZ. This role offers a unique opportunity to lead the development of advanced high-temperature radomes designed to perform in some of the most complex and extreme environments in the industry. The selected applicant will be responsible for the end-to-end… more
    RTX Corporation (10/21/25)
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  • Principal Engineer Section Lead…

    RTX Corporation (Tucson, AZ)
    …documentation. The **Shipboard Effectors Department** is currently searching for an experienced ** Principal Mechanical Design Engineer Section Lead** a team ... tough, meaningful problems that create a safer, more secure world. The ** Mechanical ** engineering team leads in mechanical hardware design, development, and… more
    RTX Corporation (01/08/26)
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  • Senior Principal Data Center…

    Oracle (Phoenix, AZ)
    **Job Description** As a Senior Principal Data Center Engineer , you will focus on OCI data center mechanical infrastructure. A mix of technical breadth and ... depth is required to work cross-functionally with different disciplines ( Mechanical , Electrical, Thermal, and Software) to develop thermal solution optimized for the… more
    Oracle (11/25/25)
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  • Principal /Senior Principal

    Northrop Grumman (Young, AZ)
    …oversite This requisition may be filled as a Principal or Sr. Principal **Basic Qualifications** **:** ** Principal Engineer MMIC Design Engineer ... experience + Keysight ADS or Cadence AWR experience + US citizenship is required **Senior Principal Engineer MMIC Design Engineer (Level 4)** + Bachelor of… more
    Northrop Grumman (01/08/26)
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  • Principal Systems Engineer

    Northrop Grumman (Mesa, AZ)
    …Systems Division. As part of the Systems Engineering group, the Principal Systems Engineer coordinates planning, organization, implementation, integration, and ... history. At Northrop Grumman Defense Systems we are seeking an experienced Systems Engineer to support our Armament Business site located in Mesa, AZ. Armament… more
    Northrop Grumman (12/04/25)
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  • Sr. Principal Control Systems…

    Republic Services (Phoenix, AZ)
    **POSITION SUMMARY:** The Sr Principal Control Systems Engineer plays a critical role in optimizing automation, infrastructure design, controls, and monitoring ... system integration through hardware, software, systems, processes, and protocols. The Sr Principal Control Systems Engineer serves as a hands-on technical… more
    Republic Services (12/31/25)
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  • Senior Principal Thermal Engineer

    Oracle (Phoenix, AZ)
    **Job Description** As a Senior Principal Thermal Engineer , you will focus on the alignment of OCI thermal hardware design with specific experience in Rack ... and depth is required to work cross-functionally with different disciplines ( Mechanical , Electrical, Thermal, and Software) to develop and set cooling strategies… more
    Oracle (11/25/25)
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  • Principal Systems Engineer (Onsite)

    RTX Corporation (Tucson, AZ)
    …The Systems Engineering and Test Center (SETC) organization is currently hiring a ** Principal Systems Engineer - Jumping Cholla Systems Engineering (SE) Subject ... systems to work the first time and every time for our warfighters! As the ** Principal Systems Engineer - Jumping Cholla Systems Engineering SME** , you will join… more
    RTX Corporation (11/22/25)
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  • Principal Environmental Test…

    RTX Corporation (Tucson, AZ)
    …instrumentation installations and data acquisition support. Environmental Test is seeking a Principal Test Engineer in the field of environmental testing. The ... life cycle from prototype to production. Environmental testing includes mechanical shock, electrodynamic vibration, salt fog, climatic environments such...Test Engineer is responsible for executing a variety of environmental… more
    RTX Corporation (11/21/25)
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  • Principal Engineer - Solid…

    RTX Corporation (Tucson, AZ)
    …other weapon initiation safety systems technology. The department is seeking to hire a Principal Engineer - Solid Propulsion. **What you will do:** + Apply or ... associated with the development and implementation of operational missile programs **The** ** Principal Engineer - Solid Propulsion** **job is in Tucson, AZ… more
    RTX Corporation (01/10/26)
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  • Principal Systems Safety Engineer

    RTX Corporation (Tucson, AZ)
    …to ensuring end user safety. + This is an exciting opportunity for a highly motivated ** Principal System Safety Engineer ** to join us on the Air and Space team ... in Tucson, AZ. **What You Will Do:** As a ** Principal System Safety Engineer ** , your responsibilities will include: + Analysis of engineering hardware, … more
    RTX Corporation (12/16/25)
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