Senior Mechanical and Robotics Design Engineer
POSITION DESCRIPTION
WHAT YOU’LL BUILD AND OWN
- Translating system needs into clear requirements, architectures, and interfaces
- Sizing and selecting motors, gearboxes, encoders, bearings, and drivetrain or transmission components
- Developing moving mechanisms—from linkages and gear trains to belts, pulleys, and cables
- Designing specialized end-effectors
- Solving tight packaging challenges by integrating sensors, wiring, PCBs, and related electronics
- Creating and managing complex SolidWorks assemblies, configurations, BOMs, and ASME Y14.5 drawings within a PDM-controlled revision workflow.
- Designing custom and semi-custom parts for machining, sheet metal, injection molding, 3D printing, and other prototype or production processes
- Helping the client make informed decisions by clearly presenting design tradeoffs, technical risks, and recommendations
WHAT YOU’LL BRING
- Bachelor’s or master’s degree in Robotics, Mechanical Engineering, or a related engineering discipline
- 8+ years of applicable product-development experience
- Experience with robotic actuation and mechanisms, including motor/transmission selection and kinematic or dynamic analysis
- SolidWorks expertise spanning complex assemblies, configurations, production drawings, and PDM-controlled revision workflows
- Availability to work on-site at the Seattle-area client location
EXPERIENCE THAT WILL HELP YOU STAND OUT
Bring additional depth in any of these areas:
- A track record of owning at least one robotic or complex electro-mechanical subsystem from requirements and architecture through detailed design, working hardware, validation testing, and design release
- Design of test fixtures, test instruments, or automated mechanical test equipment
- Development of custom actuator or drivetrain solutions, internally or with external vendors
- Strong command of GD&T (ASME Y14.5), tolerance analysis, and DFM/DFA, backed by practical knowledge of low-volume and production manufacturing methods
- The ability to move confidently between design and the test bench, with hands-on experience in prototype assembly, instrumentation, testing, troubleshooting, and system-level root-cause analysis
- Experience integrating complex mechanical designs with electrical, firmware, software, and systems engineering disciplines
COMPENSATION AND BENEFITS
- Base salary: $140K–$160K, depending on years of experience and skill sets.
- Medical, dental, and vision coverage with employee premiums fully paid by the company and partial payment for dependents
- 401(k) plan with company match after 1,000 hours of service
- 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
In addition, two types of contractor roles will be considered:
W-2 contractor (hourly employee of Simplexity):
- Hourly rate $70 - $95/hr, depending on experience
- 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 after 1,000 hours of service
- Long-term and short-term disability, AD&D and Life Insurance
- 11 paid holidays
- 15 days of paid-time-off (PTO) accrued each year
1099 contractors (have your own registered consulting/contracting business):
- Hourly rate $95 - $125/hr, depending on experience
- No benefits, holidays, or paid time off (PTO) included
No recruiters please.
Why join Simplexity?
Simplifying the Complex. Simplexity is a product development engineering firm, hired by leading technology companies to design their next generation products. In an industry of overly-complex design and production, we strive for simplicity, reducing product cost and improving reliability for our clients through our Product Development Process.
This job location is in the Seattle, WA metro region at a Simplexity client site.
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.
*** Please be advised that Simplexity Product Development will never ask you to respond to a non-SimplexityPD domain such as a gmail, ymail, hotmail, etc. If you suspect that you have been contacted by someone impersonating Simplexity Product Development who is using a fraudulent email address, please do not reply. If you are not sure, please fill out a contact form at https://www.simplexitypd.com/contact/ to report the incident. ***
Skills Required
- Bachelor’s or master’s degree in Robotics, Mechanical Engineering, or a related engineering discipline
- 8+ years of applicable product-development experience
- Experience with robotic actuation and mechanisms, including motor and transmission selection and kinematic or dynamic analysis
- SolidWorks expertise with complex assemblies, configurations, production drawings, and PDM-controlled revision workflows
- Availability to work on-site at the Seattle-area client location
What We Do
Simplifying the Complex Simplexity is a product development engineering firm that strives for simplicity in design, reducing product costs and improving the reliability of technology products. It specializes in mechatronics, a systems approach to designing mid- to high-volume products with motion, sensors, and electronics in their heart. This specialization spans multiple markets, with emphasis on biotech, medical devices, consumer products, IoT, and wearables. Simplexity has delivered solutions that are simpler to use, reduce risk and accelerate time-to-market for leading technology companies. Clients such as HP, Microsoft, and Illumina have chosen Simplexity as their partner in developing advanced 3D printing, connected wearable technology, and transformative biotech instrumentation. Simplexity's team of approximately 75 employees is comprised of mechanical, electrical, systems, controls, firmware, and software engineers who together have authored over 150 patents. With office locations in San Diego, the San Francisco Bay Area, the Portland, OR metro area, and Seattle, Simplexity has become the west coast’s leading engineering services provider specializing in designing mechatronic products. 2017 Simplexity was selected by Inc. Magazine as one of the Best Workplaces in America and by the San Diego Business Journal as one of the top 100 Fastest Growing Companies Contact Simplexity today to experience how we can help you simplify the complex.






