【Mobile Robot】Electrical and Electronic Engineer

Mobile Robot, Drone, Autonomous Nav | Electrical Engg

Location	Kawasaki-shi, Kanagawa-ken (Hybrid style of remote & in-person working)
Company	An AMR startup founded by a former automotive AD tech lead. Owns products such as autonomous transport robot that can switch between AGV mode on trajectory and autonomous mode without pre-defined trajectory, general purpose towing solution for 3rd party trolleys, and fleet management system. Their strength lie in their extensive know-how in the logistics field, based on close collaboration with many logistics warehouse operators, and in the creation of products, both hardware and software developed in-house from scratch. - Established: March 2020 - Workforces: about 50 ppl - Capital: JPY 100M
Job Description	You will be one of the engineers responsible for the electrical and electronic circuit design within LexxPluss products, handling everything from requirements capture to mass-production documentation. Your primary focus will be the development of custom PCBs and wire harnesses that interface with sensors, motors, and control systems. Key Responsibilities - Circuit and PCB Development: Design, prototype, review, and test custom circuit boards (PCBA) for sensor interfacing, power distribution, and signal processing. You will take ownership of the board layout, component selection, and hardware debugging. - Harness design: Design and evaluate robust wire harnesses that bridge custom PCBs with other electronic modules, ensuring reliable communication across the entire robotic system. - Operational considerations: Select and validate electronic components by considering the operational environment from thermal, noise, and vibration standpoints, ensuring part reliability. - Regulatory & Safety Compliance: Implement hardware-level designs that meet international safety standards (for example, ISO 3691-4, ISO 26262, UL) and domestic legal requirements (Electrical Appliance and Material Safety Act, Radio Law). - Technical Collaboration: Work closely with cross-functional teams, including mechanical engineers, software engineers, QA/QC engineers and manufacturing teams, to deliver integrated robotic solutions. - Documentation: Prepare detailed manufacturing drawings, gerber data, specifications, and reports to support the design and manufacturing process. - Hardware Procurement: Deal with manufactures both in Japan and abroad for procurement of PCBs, harness assemblies, and other parts. - Prototyping & Defect Analysis: Perform iterative prototyping and conduct root-cause analysis on hardware failures, planning and executing design improvements for mass production. - Field & Supplier Support: Occasional travel to customer sites for hardware failure investigations, deployment support, or supplier meetings.
Requirement	[ Required Qualifications ] - Education: Bachelor's or Master's degree in Electrical/Electronic Engineering or a related technical field. - Experience: Minimum 2 years of professional experience in electronics development. - Technical Skills: We expect successful applicants to have experience in: -- Circuit & PCB Design: Circuit and PCB design, and electronic system development. -- Wire Harness Design: Design and evaluate wire harnesses (cable assemblies), including knowledge of connector types and wiring auxiliary materials. -- Component Selection: Select motors, sensors, and other devices, based on technical specifications, rated performance, and interoperability. -- Design Review: Review schematics, PCB layout, and diagrams, understanding signal types, current requirements, and best practices for noise countermeasures. -- Electronics Testing: Safely operate oscilloscopes, current probes, power supplies, and other instruments for hardware debugging and evaluation. -- Engineering Calculations: Calculate thermal performance and other metrics to select optimally-rated parts. -- Problem-solving: Identify, diagnose, and perform root-cause analysis of technical issues arising from electrical components, circuit boards, or harnesses. - Communication: Business level in either English or Japanese (conversational level English in case of the latter). [ Preferred Qualifications ] - Electronics Design Tools: Experience with Altium Designer - Regulatory Knowledge: Familiarity with safety standards (ISO 3691-4/ISO 26262, UL) and legal requirements (Electrical Appliance and Material Safety Act, Radio Law). - Core Electronics & Power Design: experience designing power supply (DC/DC converters, POL, LDO), micro-controller, and analog circuits. - Sensor & Interface Integration: Proven experience designing connection circuits for sensors using various interfaces, including SPI, I2C, and differential signals. - Specialized Power & Motors: Knowledge and experience with brushless DC (BLDC) motors, and products equipped with Lithium-ion batteries. - Design Optimization: Practical application of EMI/EMC regulations, noise reduction techniques, thermal management (heat countermeasures), and ESD protection. - Simulation & Analysis: Proficiency in circuit simulators (LTspice, PSpice, etc.) to validate designs before prototyping. - Manufacturing Lifecycle: Experience managing the end-to-end process from initial design and prototyping to mass production and problem-solving. - Firmware Familiarity: Basic experience with microcontroller programming to support hardware-software integration. - Language: Business-level proficiency in both English and Japanese. - Cultural Fit: Individuals who genuinely like autonomously moving robots and those who have participated in robot contests, coding challenges, or similar competitive events.
English Level	Business level in either English or Japanese
Japanese Level	Business level in either English or Japanese
Employment Type	Permanent

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