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Mechanical Engineer 3 Jobs (NOW HIRING)

HEICO

Mechanical Engineer III

Camarillo, CA · On-site

We are actively seeking a Mechanical Engineer III to join our Mechanical Engineering team. Essential Duties and Responsibilities: * In this position, you will own the complete lifecycle of space ...

HEICO

Mechanical Engineer III

Camarillo, CA · On-site

We are actively seeking a Mechanical Engineer III to join our Mechanical Engineering team. Essential Duties and Responsibilities: * In this position, you will own the complete lifecycle of space ...

Heico

Mechanical Engineer III

Camarillo, CA · On-site

We are actively seeking a Mechanical Engineer III to join our Mechanical Engineering team. Essential Duties and Responsibilities: * In this position, you will own the complete lifecycle of space ...

MPD Integration LLC

Mechanical Engineer 3

Dane, WI · On-site

Position Summary The Mechanical Engineer III is a senior-level engineering professional responsible for leading the design, development, and execution of complex mechanical systems and structural ...

Acara Solutions

Mechanical Engineer 3

Fremont, CA

$73.54/hr

Mechanical Engineer 3 Location: Fremont, CA Employment Type: Contract Industry: Semiconductor Compensation: $73.54/hour About the Opportunity: We're seeking a Mechanical Engineer III to support the ...

Duke Energy

Mechanical Engineer III

Owensville, IN · On-site

Employees in the Engineer III position solve complex problems in engineering areas of ... Mechanical Engineering degree from an ABET accredited program * Experience with Power Plant or ...

Duke Energy

Mechanical Engineer III

Union, KY · On-site

Employees in the Engineer III position solve complex problems in engineering areas of ... Mechanical Engineering degree from an ABET accredited program * Experience with Power Plant or ...

Duke Energy

Mechanical Engineer III

Cayuga, IN · On-site

Employees in the Engineer III position solve complex problems in engineering areas of ... Mechanical Engineering degree from an ABET accredited program * Experience with Power Plant or ...

Duke Energy

Mechanical Engineer III

Noblesville, IN · On-site

Employees in the Engineer III position solve complex problems in engineering areas of ... Mechanical Engineering degree from an ABET accredited program * Experience with Power Plant or ...

Duke Energy

Mechanical Engineer III

Edwardsport, IN · On-site

Employees in the Engineer III position solve complex problems in engineering areas of ... Mechanical Engineering degree from an ABET accredited program * Experience with Power Plant or ...

AECOM

Mechanical Engineer III

Atlanta, GA · On-site

The Mechanical Engineer III will work independently with limited supervision to complete small and large project HVAC design requirements. The Mechanical Engineer III will be responsible for the ...

AECOM

Mechanical Engineer III

Atlanta, GA

The Mechanical Engineer III will work independently with limited supervision to complete small and large project HVAC design requirements. The Mechanical Engineer III will be responsible for the ...

AECOM

Mechanical Engineer III

Atlanta, GA · On-site

The Mechanical Engineer III will work independently with limited supervision to complete small and large project HVAC design requirements. The Mechanical Engineer III will be responsible for the ...

Briggs & Stratton

Mechanical Engineer III

Sherrill, NY

$80K - $130K/yr

Mechanical Engineer III As a Mechanical Engineer III you will perform a variety of complex engineering duties to design, develop, and oversee the production of integrated electro-mechanical systems ...

Briggs & Stratton

Mechanical Engineer III

Sherrill, NY · On-site

$80K - $130K/yr

Mechanical Engineer III As a Mechanical Engineer III you will perform a variety of complex engineering duties to design, develop, and oversee the production of integrated electro-mechanical systems ...

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Mechanical Engineer 3 information

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$45.5K

$102.9K

$166.5K

How much do mechanical engineer 3 jobs pay per year?

As of Sep 4, 2026, the average yearly pay for mechanical engineer 3 in the United States is $102,878.00, according to ZipRecruiter salary data. Most workers in this role earn between $81,500.00 and $126,500.00 per year, depending on experience, location, and employer.

What is a mechanical engineer 3?

A Mechanical Engineer 3 is a mid- to senior-level mechanical engineering professional who typically has several years of experience in designing, developing, testing, and overseeing the manufacturing of mechanical devices or systems. They are often responsible for complex engineering projects, providing technical guidance to junior engineers, and ensuring that designs meet safety, quality, and regulatory standards. Mechanical Engineer 3s may also be involved in project management, process optimization, and collaboration with cross-functional teams to deliver solutions. Their role requires strong analytical skills, proficiency with engineering software, and a solid understanding of mechanical principles.

How does a mechanical engineer 3 typically collaborate with cross-functional teams during project development?

As a Mechanical Engineer 3, you'll frequently work with cross-functional teams such as electrical engineers, manufacturing specialists, and project managers to ensure all design aspects align with overall project goals. This collaboration often involves participating in design reviews, providing technical input, and coordinating with other departments to resolve integration challenges. Effective communication and teamwork are essential, as you'll be expected to both guide junior engineers and consult with senior staff. Your ability to manage interdisciplinary feedback and maintain project timelines will be key to your success in this role.

What are the key skills and qualifications needed to thrive as a mechanical engineer 3, and why are they important?

To thrive as a Mechanical Engineer 3, you need a solid background in mechanical design, problem-solving, and engineering analysis, typically with a bachelor’s degree in mechanical engineering and several years of experience. Familiarity with CAD software (such as SolidWorks or AutoCAD), finite element analysis tools, and project management systems is often required, along with relevant certifications like a PE license. Strong communication, teamwork, and project leadership skills help you effectively collaborate and mentor junior engineers. These capabilities are crucial for delivering high-quality engineering solutions and managing complex projects efficiently.

What is the difference between Mechanical Engineer 3 vs Mechanical Engineer 2?

CriteriaMechanical Engineer 3Mechanical Engineer 2
Required CredentialsBachelor's degree in Mechanical Engineering; Professional Engineer (PE) license often preferredBachelor's degree in Mechanical Engineering; PE license may be optional
Work EnvironmentDesign, analysis, testing in manufacturing, automotive, aerospace industriesSimilar environments, often with more supervision or entry-level tasks
Employer & Industry UsageUsed across engineering firms, manufacturing companies, and government agenciesCommonly used in the same sectors, typically for less experienced roles

Mechanical Engineer 3 typically has more experience, responsibilities, and often a PE license, compared to Mechanical Engineer 2. The role involves more complex projects and independent work, whereas Mechanical Engineer 2 may focus on supporting tasks under supervision.

What other jobs can I do as a mechanical engineer 3?

Mechanical Engineer 3 professionals can transition into roles such as senior mechanical engineer, project manager, design engineer, or systems engineer, often leveraging their expertise in CAD software, thermodynamics, and project management. They may also move into specialized fields like aerospace, automotive, or energy sectors, or pursue roles in research and development or technical consulting.
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Mechanical Engineer 3 jobs near you
Infographic showing various Mechanical Engineer 3 job openings in the United States as of August 2026, with employment types broken down into 90% Full Time, 7% Part Time, 1% Contract, and 2% Nights. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $102,878 per year, or $49.5 per hour.

Mechanical Engineer III

HEICO

Camarillo, CA • On-site

Full-time

Re-posted 12 days ago

Job description

Lucix Corporation develops and provides cutting edge RF Electronic and Passive Components for satellite communication payloads. All hardware is designed, qualified, manufactured, tested and shipped from Lucix facilities in California. We are looking for a motivated, hands-on, passionate individual to develop new space hardware for communication satellites.
We are actively seeking a Mechanical Engineer III to join our Mechanical Engineering team.
Essential Duties and Responsibilities:
  • In this position, you will own the complete lifecycle of space hardware from initial electrical/RF design concept to production & unit delivery
  • Perform mechanical analyses (vibration, thermal, radiation) on new product designs to ensure survival to launch and on-orbit environments
  • Rapidly prototype & iterate on designs

Basic Qualifications:
  • Bachelor's degree in Mechanical or Aerospace Engineering from an accredited university or institution
  • 3-5 years of industry experience with mechanical or electromechanical design, analysis, and/or manufacturing
  • Experience with CAD and FEA software packages, preferably SolidWorks
  • Solid knowledge of GD&T
  • Self-motivated with strong interpersonal skills

Preferred Skills and Experience:
  • Master's of Science in Mechanical or Aerospace Engineering; or other engineering discipline
  • 5+ years of mechanical engineering experience; preferably in design and analysis of electronics/microwave packaging for space applications
  • Knowledge of high mix, low volume manufacturing methods, i.e. CNC manufacturing
  • Previous ownership of component design from concept to aerospace industry qualification and production
  • Rapid prototyping & design iteration
  • Working closely with RF engineers and proficiency with microwave assemblies
  • Working on mechanical design of PCAs with PCB designers (layout, thermal, vibration)

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