Mechanical Engineer

Persona AI Inc•Houston, TX

4d•Onsite

About The Position

As an early Mechanical Engineer at Persona, you will help shape the design of Persona's humanoid robots while helping set the engineering culture of the company. We're looking for exceptional people who dream big, thrive on challenges, and love seeing their designs come to life — from initial sketches through CAD modeling, prototyping, manufacturing, testing, and deployment on real industrial job sites. We are primarily interested in candidates who have shipped products in the fields of autonomy, robotics, consumer products, medical devices, automotive, or aerospace.

Requirements

Bachelor's, Master's, or PhD degree in Mechanical Engineering, Manufacturing, Robotics, Biomechatronics, Mechatronics, or related fields.
5+ years of experience (3+ years with advanced degree) designing mechanical systems in consumer products, robotics, aerospace, medical, automotive, or similar fields.
Proven track record shipping products to market, ideally at scale.
Experience designing for high-volume mass manufacturing DFM processes such as injection molding, sheet metal, stamping, casting, composites, or CNC machining.
Practical hands-on experience with prototyping tools, manufacturing techniques, and material selection.
Proficient CAD user (Onshape, SolidWorks, Catia, Creo, Fusion, etc.) with a passion for precise, elegant, scalable design.
Strong grasp of mechanical engineering fundamentals.
Strong analytical and problem-solving skills with the tenacity to tackle complex challenges, comfortable performing detailed engineering analyses (FEA, hand calculations, etc.).
A friendly, collaborative mindset, strong communication skills, and excitement to work hands-on in a dynamic, supportive team environment; design without ego.
Working understanding of tolerance analysis and GD&T.
Keen attention to detail and craftsmanship, including fit and finish.

Nice To Haves

Hands-on experience with humanoid robotics, exoskeletons, or other articulated mechanical systems.
Enjoys detailed design of complex surface geometry.
Experience designing precision mechanisms, actuators, tight tolerance components.
Familiarity with motors, actuators, transmissions (planetary, cycloidal, strain-wave), bearings, or cable drives.
Experience designing cable harnesses, wire routing, or flexible PCBs.
Ability to analyze thermal systems (hand calculations or FEA).
Proficiency in C, Python, MATLAB, or similar analytical tools.
Familiarity with classical or modern controls.
Preference toward working in interdisciplinary, fast-paced environments.
Experience collaborating with industrial designers, human factors, or UX/UI teams.
Skilled at complex surface geometry and tight packaging constraints in CAD.
Comfortable working in a machine shop (mill, lathe, etc.).

Responsibilities

Create and refine mechanical designs for advanced humanoid robotics, including actuators, manipulators, and integrated systems.
Own your designs from initial sketches through CAD modeling, prototyping, manufacturing, testing, and deployment.
Conduct simulations, structural analysis, and performance evaluations to optimize system functionality.
Generate comprehensive documentation, including CAD drawings, block diagrams, test plans, fabrication, and assembly instructions.
Interface with external manufacturing partners to optimize designs for manufacturing, testing, and assembly.
Engage hands-on in the lab, transforming your designs from ideas to production systems through rapid, iterative development cycles.
Collaborate closely with cross-functional teammates (electrical, software, controls, UX/UI, and industrial designers) to ensure seamless integration across the product.
Solve fascinating engineering challenges daily, pushing the boundaries of robotics technology.