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Mechanical Engineer 3 Jobs (NOW HIRING)

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

Tekberry

Mechanical Engineer III

Wilmington, NC · On-site

$50 - $57/hr

Mechanical Engineer III Pay Rate Range: $50.00 - 57.00 /hr DOE Employment Type: Contract Duration: Approximately 6+ Months (Potential Extension) Schedule: Full-Time | 40+ Hours per Week | Monday ...

System One

Mechanical Engineer III

Perry, OH · On-site

$52/hr

Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite - onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to ...

Platform Aerospace

MECHANICAL ENGINEER III

Hollywood, MD · On-site

$119K - $150K/yr

JOB TITLE: MECHANICAL ENGINEER III DEPARTMENT: MECHANICAL ENGINEERING REPORTS TO: MECHANICAL ENGINEERING LEAD CLASSIFICATION: FULL-TIME CLEARANCE: SECRET LOCATION: HOLLYWOOD, MD Job Summary:

DLB Associates

Mechanical Engineer III

$104K - $134K/yr

Mechanical Engineer III Position Location: Remote - work virtually from anywhere in the United States Job Summary Positions are available in our Mission Critical Department which focus primarily on ...

Birdon America, Inc.

Mechanical Engineer III

Denver, CO · On-site

$99K - $123K/yr

Mechanical Engineer III This position is located on-site in our Denver, CO corporate Office Mechanical Engineer Level III designs and develops mechanical parts, components, and equipment and provide ...

S&C

Mechanical Engineer III

Palatine, IL · On-site

$106K - $140K/yr

Join Our Team as a Mechanical Engineer III! Are you passionate about Mechanical Engineering ? S&C Electric Company is seeking a dynamic individual to coordinate our engineering function. As a ...

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All JobsMechanical Engineer 3 Jobs

Mechanical Engineer 3 information

See salary details

$45.5K

$102.9K

$166.5K

How much do mechanical engineer 3 jobs pay per year?

As of Aug 14, 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 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.

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 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.

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.

More about Mechanical Engineer 3 jobs

What cities are hiring for Mechanical Engineer 3 jobs?

Cities with the most Mechanical Engineer 3 job openings:

What states have the most Mechanical Engineer 3 jobs?

States with the most job openings for Mechanical Engineer 3 jobs include:

What job categories do people searching Mechanical Engineer 3 jobs look for?

The top searched job categories for Mechanical Engineer 3 jobs are:

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, 2% Contract, and 1% 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

System One

Perry, OH • On-site

$52/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 23 days ago

Job description

Job Title: Mechanical Engineer III Location: Perry, OH Type: Contract Compensation: $52.00 - DOE Contractor Work Model: Onsite – onsite Hours: 40 hours/week Security Clearance: Must be a US Citizen due to Nuclear restrictions Overview System One is e are seeking a high-caliber Mechanical Engineer to join an engineering team in Perry, OH. This role is part of team working on nuclear project. Mechanical Engineer III Responsibilities

  • Work on planning, design, procurement, and quality of installation of mechanical systems and equipment.
  • Complete project specific objectives on time, under direction of Sr. Mechanical Engineer; receive instructions on specific assignment objectives, complex features, and possible solutions.
  • Read and interpret technical drawings, schematics, or computer-generated reports.
  • Assist mechanical designers and drafters in developing the structural design of equipment and piping systems using computer-assisted design (CAD) and 3D design software.
  • Research, design, evaluate, and oversee the installation of equipment, systems, and processes to meet requirements applying knowledge of engineering principles.
  • Conduct research that tests or analyzes the feasibility, design, operation, or performance of equipment, components, or systems.
  • Develop and test models of alternate designs and processing methods to assess feasibility, operating condition effects, possible new applications and necessity of modification.
  • Specify system components or direct modification of products to ensure conformance with engineering design and performance specifications.
  • Independently evaluates, selects, and applies standard engineering techniques, procedures, and criteria using judgment in making minor adaptations and modifications.
  • Present technical information to peers or other personnel for review, to implement operating procedures, and resolve system malfunctions.
  • Provide specific to discipline technical expertise to the degree of preparing and providing training for other personnel; both within the company and for the customer.
Mechanical Engineer III Requirements
  • Bachelors Degree in Mechanical Engineering or related engineering field.
  • Power Plant, Process, and/or Heavy Industrial Design experience.
  • Pipe Stress Analysis.
  • Knowledge of the practical application of engineering science and technology.
  • Complex Problem Solving.
  • Good Communication Skills (Active Listening, Verbal and Written).
  • Critical Thinking.
  • Judgment and Decision Making.
  • Attention to Detail.
  • Strong desire to learn.
  • Must be a US Citizen due to Nuclear restrictions.
  • FE and PE or willingness to obtain both.
  • Energy and Chemical and/or Power Design Engineering Experience.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M- 1 #LI- Ref: #195-Precision Zachry