Shanghai
Full time
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 adapt. 在 Mentee Robotics，我们以 AI 优先的理念重新定义人形机器人自动化——将感知、推理与灵巧操作融合为能够持续学习与自适应的全自主系统。 We are now 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 and bring it to life - a walking, working platform that becomes the foundation of our next generation of products. This is a small, senior, hands-on team where speed of iteration is the core value. 我们正在中国设立全新的机器人工程中心，与总部的工程团队紧密协作。其使命是：快速研发我们下一代全尺寸人形机器人并使其落地——一个能行走、能工作的平台，成为我们下一代产品的基础。这是一支精干、资深、亲力亲为的团队，迭代速度是其核心价值。 We are looking for two Senior Actuation Engineers to design the joints of our humanoid - the single hardest hardware problem on the robot. You will own actuator modules end to end: motor selection, gear reduction, thermal design, sensing integration, and packaging - and you will cover the surrounding mechanical design (limbs, structure) as a secondary duty. 我们正在积极寻找2名资深执行器工程师加入，负责人形机器人关节整机——机器人硬件端难度最高的核心模块。你将全权负责关节模组全流程开发：电机选型、减速器方案、热设计、传感器集成、结构封装；同时兼顾配套肢体机械结构设计作为辅助工作。
Who you are 期待中的你
- An actuator specialist first, a general mechanical engineer second
- 核心定位是执行器专业专家，通用机械结构设计为辅助能力
- A first-principles thinker who questions assumptions and iterates fast
- 擅长基于第一性原理思考，敢于质疑固有方案，快速迭代验证
- Hands-on in the lab: you build, instrument, and break your own designs
- 深度实验室实操能力：自主完成样机搭建、设备标定、破坏性测试验证自己的设计方案
- Comfortable with ambiguity and rapidly changing requirements
- 能够适应需求不明确、方案快速调整的研发环境
Responsibilities岗位职责
- Design high torque-density actuator modules for legs, waist, and arms: quasi-direct-drive architectures with planetary reduction - motor selection/specification, gear design, bearings, sealing, and packaging
- 针对机器人腿部、腰部、手臂开发高扭矩密度关节模组，采用准直驱+行星减速架构；全权负责电机选型定标、齿轮设计、轴承、密封与整机封装设计
- Own the torque, speed, thermal, and mass budgets per joint, aligned with the system DOF and mass targets
- 对标整机自由度、重量指标，把控单关节扭矩、转速、散热、重量预算
- Drive quasi-direct-drive vs. high-reduction trade-offs together with the motion control team
- 协同运动控制团队，完成准直驱方案与高减速比方案的性能取舍论证
- Integrate sensing into the joint: encoders, temperature, and torque estimation provisions
- 关节传感器集成设计：编码器、温度采集、扭矩观测方案布局
- Design the surrounding structure - limbs, torso frame, brackets - optimized for fast fabrication (machined plates, printed parts)
- 配套肢体、躯干框架、支架结构设计，适配机加工、3D打印等快速打样工艺
- Own designs from concept through fabrication: CAD, tolerance analysis, DFM for prototype quantities, and supplier follow-up
- 全权负责设计从概念到量产样机全流程：三维建模、公差分析、小批量样机可制造性设计、供应商对接跟进
- Run joint-level dyno and life testing with the V&V engineer; iterate based on data
- 联合测试验证工程师完成关节台架、耐久寿命测试，依据实测数据迭代优化方案
- Work daily with electrical and embedded teams on the motor controller integration
- 日常协同电气、嵌入式团队完成电机控制器集成匹配
Requirements任职要求
- B.Sc. or M.Sc. in Mechanical Engineering or Mechatronics
- 机械工程、机电一体化本科/硕士学历
- 8+ years designing electromechanical actuation systems: BLDC motors with planetary reduction, ideally in quasi-direct-drive (QDD) configurations
- 8年以上机电执行器系统开发经验，精通BLDC无刷电机+行星减速器方案，有准直驱（QDD）关节开发经验优先
- Deep understanding of motor physics: torque constants, saturation, thermal limits, and their impact on transmission choice
- 精通电机底层原理：扭矩常数、磁饱和、散热极限，可基于电机特性匹配传动方案
- Strong CAD skills (SolidWorks/NX/Creo) and proven concept-to-hardware track record
- 熟练使用SolidWorks/NX/Creo三维设计软件，具备完整从概念到实物落地的项目履历
- Experience with structural design, materials selection, and prototype fabrication methods
- 具备结构设计、材料选型、样机加工工艺相关经验
- Hands-on lab and test experience with rotating machinery
- 拥有旋转机械实验室实操、整机测试落地经验
Advantages加分项
- Experience designing humanoid or quadruped joint modules
- 人形机器人/四足机器人关节模组独立开发经验
- Experience with gear design and gear suppliers or custom motor winding specification
- 齿轮自主设计、齿轮供应商对接、定制电机绕组参数定义经验
- Deep experience with proprioceptive actuation and backdrivability optimization
- 本体力感知关节、反向驱动性能优化深度开发经验
- Thermal simulation and FEA experience
- 热仿真、有限元FEA分析实操经
- Comfortable communicating technical topics in English with international teams
- 可流利使用英文与国际化团队同步技术方案
