Seaman Mechanical Engineer Jobs in Usa

Join the top full-mechanical contractor in the West — now expanding nationwide.

We deliver innovative, industry-changing commercial and healthcare projects and foster a culture that is truly unmatched. We offer excellent benefits, including employee ownership, 401k matching, and internal growth opportunities. Apply today for immediate consideration!

We are seeking a Mid-Level to Senior Mechanical Engineer to join our growing team. If you’re passionate about HVAC design, thrive in a collaborative design-build environment, and want exposure to everything from commercial packaged systems to complex central plants and laboratory exhaust systems — we want to connect.

This position plays a key role in the HVAC design-build process — from concept development through construction coordination. You’ll collaborate with fellow engineers, preconstruction executives, project managers, and field teams to deliver safe, energy-efficient, and constructible mechanical systems across diverse commercial sectors including healthcare, high-rise, entertainment, transportation, biotech, laboratories, and more.

Qualifications

• 5+ years of experience in HVAC design for commercial projects
• Bachelor’s degree in Mechanical Engineering; PE license strongly preferred
• Experience with vertical market segments noted above
• Notable experience with complex HVAC systems including custom air handling units, hydronic systems such as chilled and heating hot water, DDC controls, and central plants
• Proficiency in Revit MEP
• Experience with load and energy modeling software (Trace, HAP, eQuest, EnergyPro, EnergyPlus, etc.)
• Must be able to communicate in a professional manner, be able to work with various personalities and work styles, and be a collaborative team-player aligned with our core values of Family, Loyalty, and Respect
• Proven ability to meet fast deadlines, and prioritize tasks.

No third-party candidates will be accepted. This job description is not intended to detail every responsibility but to provide a general overview. As the nature of business demands change, so may the essential functions of this position. Salary range reflects total compensation. We are unable to offer work sponsorship for this position.

Date Posted:

Country:

Location:

Position Role Type:

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Security Clearance Type:

Security Clearance Status:

At Raytheon , the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. Our team solves tough, meaningful problems that create a safer, more secure world.

The Mechanical Engineering group in the Shipboard Effectors Department seeking an experienced Mechanical Engineer REA (Responsible Engineering Authority) to contribute to the mechanical technical team for a common Guidance Unit (Stack). This role is primarily responsible for maintaining mechanical Technical Data Package (TDP) configuration changes, driving producibility updates, supporting failure investigations, supporting alternate component and material evaluations and testing, providing support across the full spectrum of mechanical, environmental, structural, and thermal engineering disciplines. Additionally, the mechanical engineer will be part of a small team of mechanical engineers, ensuring successful support of both production and development efforts.

This is an onsite role and located in Tucson, Az.

What You Will Do

• Serve as the mechanical engineer to support documentation, mechanical, environmental, structural, and thermal aspects of different stack configurations. 

• Contribute to a small team of mechanical production REAs supporting mechanical production and development efforts, ensuring technical excellence and alignment with program objectives. 

• Oversee and manage all mechanical, slice and stack TDP configuration changes, ensuring updates address producibility improvements, yield optimization, and design enhancements. 

• Lead efforts to analyze and incorporate producibility updates into designs to improve manufacturing efficiency and reduce production defects. 

• Support failure investigations, conducting root cause analyses and implementing corrective actions to resolve systemic mechanical issues. 

• Provide technical guidance on mechanical design, analysis, and integration challenges, ensuring compliance with program requirements and performance specifications. 

• Drive design for manufacturability (DFM) practices and lead efforts to identify and implement cost-saving opportunities in mechanical assemblies. 

• Collaborate with cross-functional teams, including systems engineering, quality, and supply chain, to resolve mechanical engineering challenges and ensure seamless integration of stack configurations. 

• Provide oversight and review of hardware performance during environmental testing, including structural and thermal analysis, to ensure compliance with design requirements. 

• Maintain and update mechanical TDPs, processing engineering change requests such as IRs, CNs, SRs, and variances to ensure accurate and current documentation. 

• Positive attitude toward being mentored by experienced technical team members and subject matter experts within Raytheon. 

Qualifications You Must Have:

• Typically requires a Bachelors Degree in Science, Technology, Engineering, and Mathematics (STEM) and a minimum of 5 years of prior relevant experience or an advanced degree in a related field and minimum 3 years experience. ​

• Five years’ experience in mechanical design and design documentation

• Experience with 3D CAD tools (modeling and drawing)

• Experience with Geometric Dimensioning & Tolerancing (GD&T) per ANSI Y14.5

• Experience with the packaging of electronics assemblies

• Knowledge of environmental testing and hardware performance validation, including structural and thermal analysis. 

• The ability to obtain and maintain a US security clearance. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer

• Strong interpersonal and communication skills; both verbal and written

• Experience in mechanical sub-systems packaging, materials, interconnects, or large assembly development

• Experience with managing engineering change processes, including IRs, CNs, SRs, and variances. 

• Proficient in Creo (modeling and drawing) and Windchill (PDM)

• Strong understanding of design for manufacturability (DFM) and design for producibility (DFP) principles. 

• Active DoD issued security clearance

• Experience working in the aerospace and defense industry.

• Advanced degree in Engineering discipline

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

• Please consider the following role type definition as you apply for this role.

• Onsite : Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

Privacy Policy and Terms:

Click on this link to read the Policy and Terms

We're building safety-enhancing technology for aviation that will save lives. Automated aviation systems will enable a future where air transportation is safer, more convenient and fundamentally transformative to the way goods - and eventually people - move around the planet. We are a team of mission-driven engineers with experience across aerospace, robotics and self-driving cars working to make this future a reality.

As an Avionics Mechanical Engineer at Reliable Robotics, you will be a part of the Vehicle Design and Integration team and will report to the Vehicle Design and Integration Manager. This team is a small group of highly motivated people designing, testing, and flying advanced mechanical systems. The harness engineer is a very cross-functional role at the convergence of the avionics, mechanical, integration, and production teams, with significant hands-on work designing, building, integrating, and testing our harnesses, enclosures, and mounting hardware; expect to broaden your design and application experience. This position will be located at our facility in Mountain View, California.

Responsibilities

In your role as Avionics Mechanical Engineer you will work with the avionics, mechanical, and integration teams to define the hardware interfaces, design the detailed harnesses including definition of the harness routing, design and test enclosures for environmental protection, and design the structural mounts for securing the hardware in the airplane. You'll have the opportunity to design, install, and test your hardware on a remotely operated aircraft, and you'll be an instrumental part of how our hardware teams come together on the airplane.

Basic Success Criteria

• BS in Mechanical Engineering, Electrical Engineering, or equivalent industry experience

• 2+ years experience in mechanical or avionics hardware design

• Ability to route harnessing (both in CAD and physically in the airplane) in a strategic manner

• Experience working with connectors, backshells, EMI shielding, and cable/wire protection methods

• Experience designing and analyzing structural mounts

• A love of spatial packaging

• Be logical, inquisitive, and eager to both teach and learn

Preferred Criteria

• 4+ years experience in harness design and avionics packaging

• Experience performing design trades for and detail design of aerospace flight harnesses

• Experience with NX routing and Capital Harness Designer

• Experience designing avionics enclosures

• Experience working on certification-path aviation development projects

• Experience testing hardware to DO-160 requirements

The position will be located at our facility in Mountain View, California. Must be willing to travel up to 10% of the time.

The estimated salary range for this position is $118,000 to $170,000/annual salary + cash and stock option awards + benefits. At Reliable Robotics, we strive to provide competitive and rewarding compensation based on experience and expertise, as well as market conditions, location, and pay equity.

In addition to base compensation, Reliable Robotics offers stock options, employee medical, 401k contribution, great co-workers and a casual work environment.

This position requires access to information that is subject to U.S. export controls. An offer of employment will be contingent upon the applicant's capacity to perform in compliance with U.S. export control laws.

All applicants are asked to provide documentation that legally establishes status as a U.S. person or non-U.S. person (and nationalities in the case of a non-U.S. person). Where the applicant is not a U.S. person, meaning not a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident, (iii) refugee under 8 U.S.C. * 1157, or (iv) asylee under 8 U.S.C. * 1158, or not otherwise permitted to access the export-controlled technology without U.S. government authorization, the Company reserves the right not to apply for an export license for such applicants whose access to export-controlled technology or software source code requires authorization and may decline to proceed with the application process and any offer of employment on that basis.

At Reliable Robotics, our goal is to be a diverse and inclusive workforce. As an Equal Opportunity Employer, we do not discriminate on the basis of race, religion, color, creed, ancestry, sex, gender (including pregnancy, childbirth, breastfeeding, or related medical conditions), gender identity, gender expression, sexual orientation, age, non-disqualifying physical or mental disability or medical conditions, national origin, military or veteran status, genetic information, marital status, or any other basis covered by applicable law. All employment and promotion is decided on the basis of qualifications, merit, and business need.

If you require reasonable accommodation in completing an application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please direct your inquiries to

Compensation Range: $118K - $170K

“We create happiness.” That’s our motto at Disney Experiences. At Disney, you’ll help inspire magic by enabling our teams to push the limits of entertainment and create innovative built environments. You will collaborate to develop ideas/thoughts into physical reality! The Architecture & Facilities Engineering (A&FE) team is looking for a Staff Mechanical Engineer to support the development and sustainment of projects we support throughout the Disneyland Resort. Our department supports a wide range of project types including Attractions, Maintenance, Foods, Merchandise, and Entertainment. Projects range from minor renovations to new facilities. You will also support immediate response efforts with reactionary projects.

You will act as the Staff Mechanical Engineering Owner’s Representative with technical expertise for mechanical engineering issues, design management of in-house and outside resources, code compliance, Disney design standards, documentation, specifications, and life cycle cost analysis for best value. This role also involves close collaboration with other engineering disciplines and multiple Disney project teams including FAM, WDI, Entertainment, and Operations.

You will report to the Senior Manager for MEP Engineering with DLR Architecture & Facilities Engineering.

What You Will Do

• Act as Owner’s Representative on projects from concept through construction at the Disneyland Resort.  Project types will include shops, rides, hotels, shows, maintenance facilities, and nearly any built facility and area development found on our property.

• Manage the design and development of contract documents of projects with in-house and outside resources to meet project scopes, schedules and budgets.

• Develop concepts and Request for Proposals (RFP)s.

• Attend, participate, and problem solve during site visits from concept through construction.

• Review drawings and specifications and ensure that all projects are designed and executed to applicable codes and statutes

• Work with stakeholders to provide civil engineering resources to develop project scope including design, planning and code compliance for estimation and feasibility.

• Resolve design issues creatively and thoroughly coordinating design with other disciplines.

• Develop clear technical analyses and recommend frameworks to inform executive review and approval.

• Partner with internal teams to develop, maintain, communicate, and enforce Walt Disney Company design guidelines, standards, master specifications, and details.

• As the owner's representative, you'll review with a focus on constructability, efficiency, and long-term maintainability.

• Liaison with City officials and external agencies to ensure project scope and implementation is coordinated and compliant with external requirements.

• Research Record Drawings in Disneyland Archives.

• Perform field work to investigate and assess mechanical related infrastructure in the Resort.

• Independently review new and existing design drawings and calculations.

• Review shop drawing submittals and respond to vendor requests for information per Resort standards.

• Coordinate design activities and monitor field installations and demolition work that comply with specifications and code requirements.

• Perform reviews of existing infrastructure: propose upgrades and replacements, present findings and recommendations.

• Serve as Engineer of Record on assigned projects, including signing and sealing construction documents when required.

• Design with focus on constructability, efficiency, and long-term maintainability.

• Expedite the receipt of sample submittals required for final design approval.

• Participate in weekly design coordination meetings and prioritize items to minimize schedule impacts.

• Assist Project and Design Managers to resolve design compliance issues relating to Projects requirements. Validate that all Item Specifications are consistent with products installed before archiving manuals.

• Support Executive Design Reviews by contributing technical content, analysis, and coordination as requested by Project or Design Management.

What We Look For

• 10+ years of experience in mechanical engineering design, HVAC/DX/VRF/CHW applications, central plant development and operational guidance, hydraulics, hydronics, compressed air, overall kitchen designs and implementation.

• Ability to support project partners in procurement and construction.

• Experience with AutoCAD, Revit, ACC, and other engineering-based software.

• Working knowledge of both National and Local Standards and Codes.

Required Education and Licensure

• BS Mechanical Engineering or related field from an ABET accredited university.

• Current registration as a Professional Engineer in the State of California in good standing.

#DXMedia #DXFOS #LI-YW1

Additional Information

Benefits and Perks: Disney offers a rewards package to help you live your best life. This includes health and savings benefits, educational opportunities, and special extras that only Disney can provide. Learn more about our benefits and perks at  hiring range for this position in Anaheim, CA is $126,800.00 to $154,800.00 per year. The base pay actually offered will take into account internal equity and also may vary depending on the candidate’s geographical region, job-related knowledge, skills, and experience among other factors. A bonus and/or long-term incentive units may be provided as part of the compensation package, in addition to the full range of medical, financial, and/or other benefits, dependent on the level and position offered.

Date Posted:

Country:

Location:

Position Role Type:

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Security Clearance Type:

Security Clearance Status:

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. Our team solves tough, meaningful problems that create a safer, more secure world.

The Mechanical Engineering group in the Shipboard Effectors Department is currently searching for an experienced Mechanical Design Engineer to work on a multi-discipline team to support design and upgrades of Shipboard Effectors products and subsystems.

This is an onsite role and located in Tucson, AZ.

What You Will Do:

• Utilizing strong mechanical hardware design experience and knowledge with ruggedized structures, interconnects, cooling, and electronics integration

• Supporting all phases of programs from capture and concept development through production

• Developing technical solutions to a wide range of complex problems related to the entire product life cycle including proposal, design, manufacture, integration and test of electronics for multiple military programs

• Supervising the definitions of mechanical outline and construction details, component selection and specification, mechanical and assembly drawings, electrical/RF layout, and delivering the final technical data package

• Employing transition-to-production practices with the ability to lead a design release into production

• Tracking, reporting, and meeting cost, schedule, quality, and performance requirements for the finished product, including Earned Value (EV) management and Estimate at Complete (EAC) inputs

• Preparing proposal inputs on behalf of the product area

• Providing technical conscience, challenged with making sure the product and process meet appropriate standards and requirements while helping to remove roadblocks

• Working with minimal direction or supervision, while exercising considerable latitude in determining the technical objectives of the assignment while meeting cost, schedule, quality, and performance requirements for the finished product.

• Leading a small team of mechanical engineers when required

• Interacting frequently with senior personnel, occasionally including external customers, on significant technical matters often requiring coordination between organizations.

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or An Advanced Degree in a related field and minimum 5 years experience.

• A minimum of eight (8) years of experience in the design of electronics packaging for military or aerospace or commercial applications

• Experience with GD&T (Geometric Dimensioning & Tolerances)

• The ability to obtain and maintain a US security clearance prior to the start date. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance 

Qualifications We Prefer:

• Experience with ANSI drawing standards and/or first order or structural analysis techniques.

• Experience with design to military standards

• Strong technical background with high technical aptitude

• Strong leadership skills and project management, sub contract management experience

• Experience with CREO (Pro/E) or similar 3D solid modeling software

• Cognizant of machine suppliers’ capabilities or have direct experience in a manufacturing and assembly support role for producibility

• Familiarity with the design and manufacturing processes of CCAs, mechanical/RF components, metal housings, structures, and electronics assemblies

• Must have a working knowledge of Microsoft Office (Word, Excel, PowerPoint)

• Very strong verbal and written communications and interpersonal skills when working with team members and customers

• Advanced degree in Mechanical, Electrical or Aerospace Engineering

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

Learn More & Apply Now!

• RTX solves some of the toughest challenges in aerospace and defense. That requires expansive thinking and bold innovation.

• Please consider the following role type definition as you apply for this role.

  • Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

Privacy Policy and Terms:

Click on this link to read the Policy and Terms

Mechanical Engineer – Aerospace Thermal Management Systems (Integration & Packaging)

Location: Onsite – Irvine CA

Industry: Aerospace & Defense

Duration: 6 months and extendable

Role Overview

We are seeking two highly skilled Mechanical Engineers with experience in the Aerospace & Defense sector to support the development and integration of advanced thermal management subsystems used across military and commercial platforms globally.

This role focuses on mechanical subsystem development from a packaging and integration perspective, including enclosure design and integration of electronic and fluid control components such as pumps, compressors, fans, and valves. The ideal candidate has hands-on experience developing aerospace-grade subsystems within defined volume and interface constraints, ensuring high reliability, environmental robustness, and compliance with industry standards.

These roles will support programs progressing from Preliminary Design Review (PDR) toward Critical Design Review (CDR) and will involve reuse and adaptation of existing product architectures.

Key Responsibilities

• Design and develop mechanical enclosures for aerospace electronic and control subsystems such as thermal management systems and related subsystems
• Package and integrate COTS and custom components into customer-defined volume constraints by integrating components including pumps, compressors, fans, valves, and control electronics
• Develop detailed CAD models, assemblies, and manufacturing drawings (SolidWorks preferred)
• Conduct tolerance analysis, GD&T, stack-up analysis, and design for manufacturability (DFM)
• Support prototype builds, integration activities, testing, and validation
• Implement design considerations to satisfy and qualify the environmental requirements (shock, vibration, temperature, humidity, EMI/EMC interface considerations) per MIL standards.
• Collaborate with electrical, controls, thermal, structural, and systems engineering teams
• Participate in root cause analysis and design refinement
• Ensure compliance with aerospace and defense standards and documentation practices

Required Qualifications

• Bachelor’s degree in mechanical engineering or equivalent.
• 5+ years of experience in Aerospace & Defense mechanical subsystem development
• U.S. Citizen (No Dual Citizenship)
• Strong mechanical packaging and integration experience
• Experience designing enclosures housing electronics and fluid/mechanical components
• Exposure to thermal management systems (ECS, vapor cycle, or liquid cooling preferred but not mandatory)
• Working knowledge of rotating machinery components (fans, compressors, pumps)
• Proficiency in CAD tools (SolidWorks preferred; strong experience in other platforms acceptable)
• Experience with GD&T and tolerance analysis
• Familiarity with aerospace environmental standards (MIL-STD preferred)
• Experience supporting qualification and validation testing
• Strong understanding of materials selection for aerospace applications
• Ability to work in cross-functional engineering teams

Preferred Qualifications

• Experience packaging turbomachinery components within constrained aerospace envelopes
• Exposure to controls systems integration
• Knowledge of vibration isolation and shock mitigation techniques
• Experience supporting PDR/CDR processes
• Familiarity with configuration management and aerospace documentation rigor
• Exposure to FMEA, reliability analysis, and lifecycle support

Job Title: Mechanical Engineer – Auxiliary Systems

Location: Janesville, WI (On-Site)

Schedule: Monday–Friday, 8:00 AM – 5:00 PM

Overview

We are seeking a Mechanical Engineer to support the design, development, and construction of auxiliary mechanical systems within a highly regulated engineering environment. This role will act as a key liaison between the design and construction teams, ensuring system designs are properly executed during procurement, fabrication, installation, and commissioning phases. The engineer will collaborate with internal stakeholders, vendors, and construction teams to ensure systems are delivered on time, on budget, and in compliance with project requirements.

Key Responsibilities

• Review and coordinate stakeholder feedback on system design packages.
• Interface with the Procurement team to support vendor selection, design reviews, and fabrication contracts.
• Collaborate with equipment vendors on Factory Acceptance Tests (FATs) and Site Acceptance Tests (SATs).
• Ensure on-time and on-budget delivery of auxiliary mechanical equipment.
• Perform owner’s acceptance reviews of vendor-supplied design documentation.
• Prepare and review test plans for factory and site acceptance testing of equipment.
• Act as a technical liaison between engineering design and construction teams during installation and commissioning.
• Address field inquiries and technical issues during construction.
• Conduct site walkdowns and inspections of installed equipment to verify proper installation and compliance with design specifications.
• Support system design documentation including drawings, specifications, calculations, reports, and quality documentation.
• Provide schedule updates and coordinate with project controls on task progress.
• Manage multiple engineering tasks and small-scope project management responsibilities, including scheduling, planning, and resource coordination.

Required Qualifications

• Bachelor’s degree in Mechanical Engineering or a related discipline.
• 6+ years of relevant engineering experience in a professional setting (10+ years preferred).
• Experience working in highly regulated environments or complex engineering projects.
• Ability to manage multiple projects simultaneously at different stages of completion.
• Strong problem-solving abilities and a hands-on engineering mindset.
• Excellent communication and collaboration skills.
• Willingness to learn and develop new technologies.

Preferred Qualifications

• 10+ years of relevant project experience.
• Knowledge of ASME B31.3 Process Piping Code.
• Experience supporting engineering activities on active construction sites.
• Experience with structural design considerations for seismic loading.
• Familiarity with quality systems and engineering support for incoming inspection of custom equipment.
• Experience working within nuclear or similarly regulated quality systems.
• Proficiency with engineering software such as AutoCAD Plant 3D, SolidWorks, or AutoPipe.