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Senior Mechanical Design Engineer Jobs in Renton, WA

System One

Senior Mechanical Design Engineer

Bellevue, WA · Remote

$92K - $126K/yr

Senior Mechanical Engineer Location: Bellevue, WA Type: Contract Contractor Work Model: Remote - offsite Hours: 40.0 Responsibilities * Design reactor structures and components from concept through ...

System One

Senior Mechanical Design Engineer

Bellevue, WA · Remote

$92K - $126K/yr

Senior Mechanical Engineer Location: Bellevue, WA Type: Contract Contractor Work Model: Remote - offsite Hours: 40.0 Responsibilities * Design reactor structures and components from concept through ...

Protingent

Mechanical Design Engineer

Bellevue, WA · On-site

$37 - $74/hr

Mechanical Design Engineer Position Description: Protingent Staffing has an exciting contract ... Work under the mentorship and direction of leads and senior engineers. * Support continuous ...

System One

Mechanical Design Engineer

Bellevue, WA · On-site

$52 - $85/hr

Mechanical Design Engineer Location: Bellevue, Washington Type: Contract Compensation: $52 - $85 hourly Contractor Work Model: Hybrid System One is seeking a Mechanical Design Engineer to support the ...

Actalent

Senior Mechanical Engineer - Payloads

Seattle, WA

$118K - $157K/yr

Job Title: Sr. Mechanical Engineer - Payloads This Sr. Mechanical Engineer - Payloads role focuses ... Lead mechanical design and integration efforts for optical payload systems used in spaceflight ...

Aetherflux

Sr. TCA Mechanical Design Engineer

Seattle, WA · On-site

$185K - $210K/yr

We are seeking a Senior TCA Mechanical Design Engineer with deep expertise in manufacturing processes, tooling design, and specialized fabrication methodologies to support rocket engine injector ...

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All JobsMechanical Design Engineer JobsSenior Mechanical Design Engineer JobsSenior Mechanical Design Engineer Jobs in Renton, WA

Senior Mechanical Design Engineer information

See Renton, WA salary details

$81K

$122.1K

$169.8K

How much do senior mechanical design engineer jobs pay per year?

As of Aug 12, 2026, the average yearly pay for senior mechanical design engineer in Renton, WA is $122,112.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,200.00 and $139,500.00 per year, depending on experience, location, and employer.

What are some common challenges faced by senior mechanical design engineers in cross-functional project teams?

Senior Mechanical Design Engineers often work closely with professionals from electrical, manufacturing, and software disciplines. A common challenge is ensuring seamless integration of mechanical components with other systems while balancing design intent, cost, and manufacturability. Effective communication and adaptability are crucial, as conflicting priorities or technical constraints may arise during the development cycle. Proactively addressing these issues through regular collaboration and clear documentation helps maintain project timelines and product quality.

What is the difference between Senior Mechanical Design Engineer vs Mechanical Design Engineer?

AspectSenior Mechanical Design EngineerMechanical Design Engineer
Required CredentialsBachelor's or Master's in Mechanical Engineering, professional certifications often preferredBachelor's degree in Mechanical Engineering or related field
Work EnvironmentDesign teams, R&D departments, manufacturing firmsDesign teams, product development, manufacturing settings
Employer & Industry UsageEngineering firms, manufacturing companies, aerospace, automotiveSimilar industries, often entry to mid-level roles

The main difference between a Senior Mechanical Design Engineer and a Mechanical Design Engineer lies in experience, responsibility, and expertise. Senior engineers typically lead projects, mentor junior staff, and handle complex design challenges, while Mechanical Design Engineers focus on executing design tasks under supervision. Both roles require a strong foundation in mechanical engineering principles and relevant certifications, but senior roles demand more experience and leadership skills.

What does a senior mechanical design engineer do?

A Senior Mechanical Design Engineer is responsible for leading the design and development of mechanical systems, components, and products. They use advanced engineering principles and software to create detailed designs, oversee prototype development, and ensure that projects meet technical standards and client requirements. They often mentor junior engineers, collaborate with cross-functional teams, and participate in problem-solving during the manufacturing process. Their expertise is crucial for ensuring the reliability, safety, and efficiency of mechanical products.

What are the key skills and qualifications needed to thrive as a senior mechanical design engineer?

To thrive as a Senior Mechanical Design Engineer, you need advanced knowledge of mechanical engineering principles, proficiency in design analysis, and a relevant engineering degree, often backed by professional certification (e.g., PE license). Expertise with CAD software such as SolidWorks or AutoCAD, simulation tools like ANSYS, and familiarity with product lifecycle management systems are typically required. Strong problem-solving, leadership, and collaboration skills help you manage complex projects and mentor junior engineers. These capabilities ensure the creation of innovative, reliable products while meeting project deadlines and maintaining engineering standards.
What are popular job titles related to Senior Mechanical Design Engineer jobs in Renton, WA? For Senior Mechanical Design Engineer jobs in Renton, WA, the most frequently searched job titles are:
What job categories do people searching Senior Mechanical Design Engineer jobs in Renton, WA look for? The top searched job categories for Senior Mechanical Design Engineer jobs in Renton, WA are:
What cities near Renton, WA are hiring for Senior Mechanical Design Engineer jobs? Cities near Renton, WA with the most Senior Mechanical Design Engineer job openings:
Senior Mechanical Design Engineer jobs near you
Infographic showing various Senior Mechanical Design Engineer job openings in Renton, WA as of August 2026, with employment types broken down into 1% Internship, 86% Full Time, 9% Part Time, and 4% Contract. Highlights an 82% Physical, 6% Hybrid, and 12% Remote job distribution, with an average salary of $122,112 per year, or $58.7 per hour.

Senior Mechanical Design Engineer

System One

Bellevue, WA • Remote

$92K - $126K/yr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 25 days ago

Job description

Job Title: Senior Mechanical Engineer Location: Bellevue, WA Type: Contract Contractor Work Model: Remote – offsite Hours: 40.0

Responsibilities

  • Design reactor structures and components from concept through final design.
  • Develop equipment and component design solutions based on engineering and project requirements.
  • Perform scoping calculations and engineering analyses to support design decisions.
  • Interface with engineering analysis teams and support integrated design efforts.
  • Lead and participate in design reviews, evaluating technical solutions.
  • Manage and coordinate supplier and subcontractor technical activities.
  • Mentor junior engineers and provide technical guidance.
  • Support continuous improvement and application of nuclear industry best practices.
Requirements
  • Bachelor’s degree in Mechanical Engineering or related field.
  • 8+ years of equipment/component design experience (M.S. may count toward experience).
  • Working experience with ASME Boiler & Pressure Vessel Code Section III.
  • Experience with Design for Manufacturability (DFM) and Design for Assembly (DFA).
  • Experience with Finite Element Analysis (FEA), preferably using ANSYS.
  • Strong analytical and problem-solving skills.
  • Ability to manage multiple priorities in a fast-paced environment.
  • Excellent written and verbal communication skills.

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.

Ref: #161-Managed Staffing Charlotte