Senior Mechanical Engineer — Robotics & Manufacturing

Simplexity Product Development; Bellevue (WA); On-site; USD 140,000 - 160,000; Full time

Benefits offered by this job

Healthcare plan

401(k) plan with company match

Disability & life insurance

Paid maternity/new parent leave

11 paid holidays

3 weeks PTO per year

Job summary

Simplexity Product Development in Bellevue, WA is seeking a hands-on senior mechanical engineer to work embedded with our client on a cutting-edge robotics product. You should be proficient in FEA, preferably ANSYS, and communicate tradeoffs that affect designs based on modeling results.

The role includes making design updates to subsystems for manufacturability and creating release-quality documentation. This on-site position requires 8+ years of experience, knowledge of SolidWorks, and

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.

Responsibilities

• 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.

Skills

FEA

Ownership mindset

On-site coordination

Client communication

Education

B.S./M.S. in Mechanical Eng.

Tools

ANSYS

SolidWorks

Job description

Simplexity Product Development in Bellevue, WA is seeking a hands-on senior mechanical engineer to work embedded with our client on a cutting-edge robotics product. You should be proficient in FEA, preferably ANSYS, and communicate tradeoffs that affect designs based on modeling results.

The role includes making design updates to subsystems for manufacturability and creating release-quality documentation. This on-site position requires 8+ years of experience, knowledge of SolidWorks, and