Mechanical Engineering Intern

Mundane is a seed-stage robot learning startup founded by Stanford roboticists and builders. We’re deploying a fleet of humanoid robots to perform real-world tasks in commercial environments, collecting the data required to train the next generation of embodied intelligence.

We move fast, prototype aggressively, test in the real world, and iterate based on reality—not simulations. You can read more at (Use the "Apply for this Job" box below)..

This role is for a hands‑on builder who loves turning CAD into real hardware and prototypes into working systems. You’ll work across mechanical design, electronics integration, and software bring‑up to help us quickly design, test, and refine robot hardware. Expect a blend of CAD modeling, 3D printing, mechanical debugging, wiring harness work, and power tools.

If you have a track record of building things outside of class (robotics club, battle bots, personal CAD projects, hobby CNC, DIY motion systems), you’ll fit right in.

• Own mechanical design of robotic subsystems: actuators, linkages, structures, enclosures, and motion systems
• Drive DfX (Design for Manufacturing, Assembly, Reliability, Cost, Serviceability) across all designs
• Perform topology optimization and FEA (ANSYS) to reduce weight, improve stiffness, and optimize performance
• Develop and maintain production-quality CAD (Solid Works) for complex assemblies and mechanisms
• Design for high-cycle, high-load dynamic systems with tight tolerances and reliability requirements
• Lead design reviews, tolerance stack‑ups, and failure mode analysis (FMEA)
• Work with vendors and internal teams to transition designs from prototype to scalable production
• Debug and iterate on hardware through hands‑on testing, root cause analysis, and redesign
• Collaborate cross‑functionally with controls, electronics, and robotics teams to integrate full systems
• Define and build test rigs and validation plans for moving mechanical systems

• Pursuing a degree in Mechatronics, Mechanical/Electrical Engineering, Robotics, or related fields.
• Strong CAD proficiency (Fusion 360, Solid Works, Onshape). You’ve designed and built things, not just done coursework.
• Experience with prototyping tools: 3D printers, hand tools, soldering, basic machining.
• Hands‑on mentality: you enjoy building, breaking, fixing, and improving hardware in real environments.

• Experience with ANSYS (or similar) for FEA and topology optimization
• Deep understanding of DfX principles (DFM, DFA, DFR, etc.)
• Proven track record designing moving mechanical systems (linkages, gear trains, actuators, transmissions)
• Experience taking designs from concept -> prototype -> production
• Strong fundamentals in materials, tolerancing (GD&T), and manufacturing processes
• Experience designing robotic arms, humanoids, or dynamic motion systems
• Knowledge of actuator design (motors, gearboxes, harmonic drives, belt systems)
• Experience with fatigue analysis, vibration, and dynamic loading
• Familiarity with robotics systems integration (sensors, embedded systems, controls)
• Background in high-performance or lightweight structures (topology-optimized parts, composites, etc.)

• Ownership over critical mechanical systems deployed in real-world robotic fleets
• Direct impact on the performance, reliability, and scalability of humanoid robots
• Tight collaboration with a small, high-caliber, multidisciplinary team
• Fast iteration cycles with real hardware feedback loops
• Competitive compensation, equity, and leadership growth opportunities