Senior Mechanical Engineer - Actuation

Apptronik is a human-centered robotics company developing AI-powered robots to support humanity in every facet of life. Our flagship humanoid robot, Apollo, is built to collaborate thoughtfully with people, starting with critical industries such as manufacturing and logistics, with future applications in healthcare, the home, and beyond. We operate at the cutting edge of Applied AI, applying our expertise across the full robotics stack to solve some of society's most important problems. You will join a team dedicated to bringing Apollo to market at scale, tackling the complex challenges like safety, commercialization, and mass production to change the world for the better. JOB SUMMARY We're looking for highly motivated and talented engineers with hands-on experience and a passion for robotics to join our team. Specifically, we seek a Mechanical Engineer with proven capabilities in electric actuation design – electric motors, drivetrains, electromechanical packaging, joint/mechanism design, and testing to support the development of our next-generation humanoid robotics system. ESSENTIAL DUTIES AND RESPONSIBILITIES or KEY ACCOUNTABILITIES Lead detailed design and analysis of actuators (rotary and linear) Guide junior engineers to improve their designs Collaborate with a small cross-disciplinary team of engineers Participate in creative brainstorming for concept generation Conduct engineering analysis to drive design decisions Compare concepts via iterative design, prototype, assembly, and test Perform analysis (FEA, etc.) to optimize and validate design Create GD&T-informed drawings, a Bill of Material, and procurement documentation Produce assembly instructions and finalize project documentation Participate in pilot build of your designs Perform DVP&R to ensure design meets requirements Iterate on design to harden for scalability and DFMA SKILLS AND REQUIREMENTS Mastery of engineering fundamentals / first principles High proficiency in CAD (NX, SolidWorks, Creo, or similar) Demonstrated hands-on experience prototyping and testing mechanical components. Exceptional attention to detail Excellent teamwork and collaboration Outstanding organizational and time management skills The ability to multi-task and manage conflicting deadlines Strong written and verbal communication Great team player able to perform within a dynamic start-up environment Knowledge of kinematics, structures (statics), dynamics, joints/mechanisms, and electromechanical packaging optimization Experience in designing with planetary gears and linear transmissions is preferred Experience in humanoid/legged robotics is preferred Understanding of motor control systems and PCB layout principles is preferred EDUCATION and/or EXPERIENCE Bachelor’s degree (or equivalent) in Mechanical Engineering or related field 6+ years in development of actuation and/or robotic systems or similar PHYSICAL REQUIREMENTS …