Senior Mechanical Engineer

simplexityproductdevelopment; Bellevue (WA); On-site; USD 140,000 - 160,000; Full time

Benefits offered by this job

Healthcare: Medical, Dental & Vision

401(k) with company match

Disability and life insurance

Paid maternity/parent leave

11 paid holidays

PTO: 3 weeks/year, increasing with 2,

Job summary

Simplexity Product Development seeks a hands‑on Senior Mechanical Engineer to embed with a client team in Bellevue, WA, focusing on robotic and automation products. You will apply FEA (preferably ANSYS) and CAD (SolidWorks) to optimize designs for manufacturability and reliability, while producing release‑quality documentation.

You’ll own design tasks, communicate tradeoffs, and collaborate with suppliers and contract manufacturers on long‑term engagements at a prominent technology site.

Qualifications

• 8+ years of applicable engineering experience with hands‑on FEA work.
• Experience communicating tradeoffs from modeling results to stakeholders.
• Strong background in mechanical design for manufacturing and documentation.

Responsibilities

• Review and optimize actuator designs for cost, manufacturability and reliability.
• Perform structural analyses and validate design decisions with data.
• Define tests, diagnose failures, and iterate to working hardware.
• Present design tradeoffs and risks to client stakeholders.
• Coordinate interfaces with suppliers and contract manufacturers.
• Maintain and update drawings and Bills of Materials.
• Support long‑term engagement with evolving client needs.

Skills

FEA

ANSYS

SolidWorks

Manufacturing processes

GD&T

Actuators & transmissions

Project ownership

Client communication

Education

Bachelor's/Master's in Mechanical Engineering

Tools

ANSYS

SolidWorks

Job description

Simplifying the Complex. Simplexity is a product development engineering firm that helps leading technology companies bring advanced robotic and automation systems into reliable, scalable production. We reduce cost, improve quality, and strengthen manufacturing readiness for our clients.

Why join Simplexity Product Development?

You’ll solve challenging manufacturing and hardware-quality problems involving integrated mechanical, electrical, sensing, actuation, and control systems. Our collaborative teams value meaningful work, technical growth, and sustainable work-life balance.

POSITION DESCRIPTION

Simplexity is seeking a hands-on senior mechanical engineer to work embedded with our team at our client’s site in Bellevue, WA on a cutting-edge robotics product. You should be skilled in finite element analysis (FEA), ideally using ANSYS, and be able to communicate tradeoffs that affect designs based on modeling results. This position will include making design updates to subsystems to optimize them for manufacturing and creating release-quality documentation.

JOB DUTIES

• Review, analyze, and optimize preliminary actuator designs for manufacturing, lower cost, ease of assembly, and strong reliability.
• Perform structural finite element analysis or other relevant analyses.
• Define tests, diagnose failures, perform root‑cause analysis, and iterate rapidly to working hardware.
• Present design tradeoffs, technical risks, decisions, and project status directly to client stakeholders.
• Use structured quality and problem‑solving methods to improve manufacturing performance and reduce field and safety risk.
• Coordinate mechanical interfaces with suppliers and contract manufacturing partners.
• Manage and update part and assembly drawings and Bills of Materials.
• Respond to evolving client needs over a long‑term engagement.

QUALIFICATIONS

• Bachelor’s or master’s degree in Mechanical Engineering or a related engineering discipline.
• 8+ years of applicable experience, including at least 2 years of finite element analysis (FEA).
• Have an ownership mindset and deliver on project goals by figuring out your task list and holding yourself accountable to meeting a fast‑paced schedule.
• Proficient knowledge of ANSYS (highly preferred) or FEA software.
• Proficient knowledge of SolidWorks (highly preferred) or equivalent CAD package.
• Demonstrable knowledge of manufacturing processes and high‑volume production methods – injection molding, casting, sheet metal, machining, etc.
• Experience developing custom actuator or drivetrain solutions, ideally with external vendors.
• Strong GD&T (ASME Y14.5), tolerance analysis, and DFM/DFA.
• Hands‑on testing, troubleshooting, and root‑cause analysis experience.
• Experience having technical discussions with clients or demanding external stakeholders while remaining a hands‑on individual contributor.
• Strong understanding of actuators, gear trains, and transmissions.
• Positive, client‑focused style and a commitment to ethical conduct.
• Ability to work full‑time on‑site in Bellevue, WA at Simplexity’s client site.

PLUSES TO HAVE

Experience in any of the following areas is a strong plus:

• Performing torque‑speed, duty‑cycle, inertia, efficiency, life, force, energy, vibration, or thermal analyses.
• Experience designing test fixtures, test instruments, or automated mechanical test equipment.
• Experience using SolidWorks PDM to manage CAD files.

COMPENSATION AND BENEFITS

• Base salary range: $140K - $160K, depending on years of experience and skill sets.
• Excellent Healthcare plan (Medical, Dental, and Vision) fully paid for by the company for the employee; partial payment for dependents.
• 401(k) plan with company match.
• Long‑term and short‑term disability, AD&D and Life Insurance.
• Paid maternity/new parent leave.
• 11 Paid holidays.
• 3 weeks of paid time off (PTO) per year, increasing after 2, 5, and 9 years of service.

1099 contractors who have their own registered consulting/contracting business will also be considered:

• Hourly rate $100- $125/hr, depending on experience.
• No benefits, holidays, or paid time off (PTO) included.

Simplexity is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Diverse candidates are encouraged to apply.