Mechanical Design Engineer (Robotics)

Location: Cambridge, Massachusetts, United States; onsite

Company

hirify.global develops general-purpose robots for use in homes, workplaces, factories, farms, and other environments.

What you will do

• Design and deliver robotic mechanical components and subassemblies, including mechanisms, structures, joints, linkages, housings, bearing systems, and sensor and electronics packaging.
• Perform component sizing and validation using hand calculations, FEA, tolerance stack-ups, structural and fatigue analysis, stiffness evaluation, thermal analysis, and load-path assessment.
• Own designs from concept through DFM/DFA, prototype builds, production release, and collaboration with manufacturers and suppliers.
• Work with systems, controls, electrical, firmware, and manufacturing teams to translate robot-level requirements into integrated mechanical designs.
• Lead hardware bring-up, design reviews, component and robot-level testing, performance characterization, and failure root-cause analysis.
• Contribute to mechanical design standards and share technical knowledge across the organization.

Requirements

• 5+ years of experience delivering mechanical or electromechanical products from concept through production, or an MS degree plus 3 years of relevant industry experience.
• Strong experience designing mechanical systems with mechanisms, structures, joints, bearings, housings, material selection, and mechanical packaging.
• Strong proficiency with 3D CAD tools such as SolidWorks, CATIA, or NX, along with GD&T and tolerance analysis.
• Ability to use hand calculations and FEA for structural, fatigue, stiffness, and thermal design decisions.
• Hands-on experience building, instrumenting, testing, integrating, and troubleshooting mechanical or electromechanical hardware.
• Strong communication, ownership, and cross-functional collaboration skills.

Nice to have

• Experience with robotic systems, especially humanoid, mobile, or manipulation robots.
• Experience designing articulated joints, limbs, end effectors, linkages, or lightweight structural assemblies.
• Experience integrating actuators, sensors, electronics, wiring, and thermal systems into tightly packaged assemblies.
• Experience with high-volume manufacturing of precision mechanical components.

Culture & Benefits

• Collaborative environment grounded in humility and technical excellence.
• Salary, annual cash bonus, and company equity.
• Company-subsidized insurance programs and a 401(k) with company match.
• Flexible PTO and daily lunch.