Assembly Process Engineer

At Mentee Robotics, we are redefining humanoid automation with an AI-first approach - combining perception, reasoning, and dexterous manipulation into fully autonomous systems that continuously learn and improve. We offer an exceptional opportunity to participate in building next-generation commercial humanoid robots from 0 to 1, alongside competitive compensation, and an international engineering environment. We are expanding with a new robotics Engineering Center in China, working hand-in-hand with our engineering teams in headquarters. Its mission: to rapidly develop our next-generation full-size humanoid platform and bring it to production.

We are looking for an Assembly Process Engineer to design, establish, optimize, and scale electro-mechanical assembly processes, assembly tooling, work instructions, line balancing, and quality verification checkpoints for our full-scale humanoid robots and integrated joint modules.

Who you are?

• Assembly engineering specialist deeply experienced in precision electro-mechanical assembly, production line routing, error-proofing (Poka-Yoke), and cycle-time optimization.
• Hands-on maker who spends time on the pilot line validating work instructions, designing ergonomic assembly jigs, and tackling assembly non-conformances.
• Continuous improver dedicated to DFM/DFA feed-forward, PFMEA, standardized work, and transitioning prototype designs into scalable batch production.
• A strong collaborator across mechanical design, harness, quality control, and shop-floor technicians.

What will your job look like:

• Develop end-to-end assembly process routes, standard operating procedures (SOPs), process flowcharts, and PFMEAs for humanoid joints and whole-body integration.
• Design custom assembly fixtures, alignment jigs, press-fitting tools, and cable routing templates to guarantee high precision and repeatable quality.
• Drive DFM/DFA (Design for Manufacturing / Design for Assembly) reviews with structural and electrical hardware teams to optimize joint integration and ease of assembly.
• Define precise fast-fastening torque specifications, thread locking compound procedures, potting/thermal paste dispensing, and cable harness routing rules.
• Plan pilot assembly line layouts, workstation ergonomics, assembly line balancing, cycle time targets (Takt time), and capacity expansion roadmaps.
• Train assembly technicians, manage pilot batch assembly operations, track pass rates, and resolve dynamic production bottlenecks.
• Implement Poka-Yoke (error-proofing) solutions, torque-tracking smart tools, and end-of-line quality verification gates.
• Collaborate with supply chain and quality teams to establish incoming component inspection (IQC) tooling and fixture standards.

All you need is:

• B.Sc. in Mechanical Engineering, Manufacturing Engineering, Industrial Engineering, or related technical fields.
• 7+ years of assembly process engineering experience in precision electro-mechanical assemblies, robotics, automotive subsystems, or complex machinery.
• Mastery of 3D CAD tools (SolidWorks, Creo, or NX) for fixture design and 3D assembly sequence simulation.
• Proven track record in developing SOPs, PFMEAs, assembly line balancing, and cycle time (Takt time) reduction.
• Deep knowledge of precision assembly methods: bearing press-fitting, preload adjustment, adhesive potting, torque control, and dense harness routing.
• Strong root-cause problem-solving capabilities (8D, 5-Why) and practical experience with Lean Manufacturing principles.
• Excellent interpersonal and communication skills for training technicians and interfacing with design engineering teams.

Nice to have:

• Direct experience establishing assembly lines for humanoid robots, robotic arms, quadrupeds, or precision joint actuators.
• Experience with semi-automated press-fit equipment, smart electric screwdrivers with data logging, and MES systems.
• Familiarity with NPI (New Product Introduction) process gates and prototype-to-mass-production transfer.
• Comfortable communicating technical topics in English with international teams.