What are the responsibilities and job description for the Principal Mechanical Engineer - Mechatronics position at Motion Recruitment?
Our client is seeking a Senior Mechatronics Engineer to lead the design, development, and delivery of innovative electro-mechanical robotic systems. You’ll own the mechanical subsystem design across a multidisciplinary team, contributing to hardware that will be deployed and scaled across real-world environments.
This is a hands-on, high-autonomy role in a fast-paced startup environment. The ideal candidate thrives in ambiguity, can pivot quickly, and brings a product-first mindset to engineering challenges.
Key Responsibilities
This is a hands-on, high-autonomy role in a fast-paced startup environment. The ideal candidate thrives in ambiguity, can pivot quickly, and brings a product-first mindset to engineering challenges.
Key Responsibilities
- Lead mechanical and mechatronic system design from concept to production for robotic tire-changing platforms.
- Design and specify multi-axis actuators, gear drives, motors, sensors, and related components.
- Develop pneumatic and hydraulic circuit designs, including actuation systems, solenoids, and regulators.
- Perform finite element analysis (FEA) for structural, fatigue, and dynamic loads.
- Build and maintain CAD models and engineering documentation (GD&T, BOMs, test procedures).
- Create test plans and validate subsystems with structured data collection and analysis.
- Collaborate closely with cross-functional teams (software, controls, electrical) to integrate full-system functionality.
- Contribute to engineering processes such as lifecycle management, design reviews, and change control.
- Support installation, troubleshooting, and field deployments as needed.
- BS in Mechanical Engineering, Robotics, or a related field.
- 10 years of professional experience in robotics, automation, or electro-mechanical system development.
- Proven track record in designing and delivering industrial robotic systems at scale.
- Deep experience with actuators, motors, gearing, sensors, and real-world integration.
- Proficient in 3D CAD (preferably OnShape or SolidWorks), with strong GD&T skills (ASME Y14.5).
- Skilled in FEA tools for static, dynamic, and fatigue analysis.
- Hands-on experience with pneumatics and hydraulics in robotic or automation applications.
- Strong documentation and communication skills; able to write clear procedures, test plans, and engineering reports.
- MS or PhD in Mechanical Engineering.
- Expertise in system dynamics, vibration analysis, or industrial tooling design.
- Experience with industrial control systems.
- Background in simulation tools, free body diagrams, and electro-mechanical equations.
- Familiarity with engineering documentation systems (CAD vaults, BOMs, part numbering).
- Python or MATLAB proficiency for test automation or data analysis.
- Competitive compensation and equity package.
- Medical, dental, and vision coverage.
- PTO and flexible time-off policies.
- A dynamic, collaborative team solving complex problems in robotics.
- A high-ownership culture with significant autonomy and room for technical leadership.
Principal Mechanical Engineer
Formlabs -
Somerville, MA
