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 are seeking a Staff Mechanical Engineer to provide technical leadership in the design, development of our Apollo humanoid robots across their full lifecycle—from early concept through production and field support. In this role, you will apply deep engineering expertise and sound judgment to solve ambiguous, high-impact technical problems. You will work closely with cross-functional partners in electrical, software, manufacturing, quality, supply chain, and operations to ensure designs meet performance, reliability, cost, safety, regulatory, and manufacturability requirements. As a staff-level engineer, you are expected to deliver strong individual technical contributions while also mentoring junior engineers, leading design efforts, influencing technical direction, and helping raise engineering standards and best practices across the organization. ESSENTIAL DUTIES AND RESPONSIBILITIES or KEY ACCOUNTABILITIES  • Lead mechanical design efforts for complex products, systems, and subsystems • Drive system architecture decisions, design trade studies, and technical risk mitigation • Own designs from concept development through NPI, production release, and sustaining • Collaborate with manufacturing, suppliers, and contract manufacturers to ensure production readiness and smooth ramp • Plan and execute verification, validation, and reliability testing activities • Support field and manufacturing issues through structured root-cause analysis and corrective actions • Participate in and lead technical design reviews across multiple projects • Mentor junior and mid-level engineers through coaching, design feedback, and technical guidance • Contribute to and help define engineering standards, processes, and best practices • Influence technical direction across teams without direct authority SKILLS AND REQUIREMENTS  • Proven ability to lead and deliver complex mechanical systems or architectures • Deep expertise in at least one core area (e.g., precision design, analysis, DFMA, electromechanical systems) with breadth across others • Strong experience with DFMA, manufacturing processes, and production engineering • Advanced proficiency in mechanical analysis, including FEA and analytical modeling • Hands-on experience with prototyping, verification, validation, and reliability testing • Strong knowledge of materials selection, GD&T, and tolerance stack-up analysis • Experience integrating mechanical systems with electronics, software, motion, thermal, or fluid systems • Familiarity with tooling, fixtures, automation, or equipment design • Knowledge of regulatory, safety, and compliance requirements • Demonstrated ability to mentor engineers and raise team technical capability • Excellent communication skills and strong engineering judgment EDUCATION and/or EXPERIENCE  • Bachelor’s degree in Mechanical Engineering • 8+ years of experience in a related mechanical engineering role PHYSICAL REQUIREMENTS  • Prolonged periods of sitting at a desk and working on a computer • Must be able to lift 15 pounds at times • Vision to read printed materials and a computer screen • Hearing and speech to communicate     *This is a direct hire.  Please, no outside Agency solicitations.  Apptronik provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.