Lead HW Engineer - MCU

Larsen & Toubro; Bengaluru; On-site; INR 1,200,000 - 2,000,000; Full time

Job summary

Larsen & Toubro is seeking a Power Electronics Hardware Engineer in Bangalore to drive hardware development for 400V/800V EV drivetrain electronics. You will handle design, component selection, schematics, PCB coordination, prototype bring-up and system integration across multiple subsystems.

The role requires strong fundamentals in power electronics, HV EV systems, and teamwork with mechanical, thermal, software, and vehicle integration teams. 7–10 years of relevant experience is preferred.

Qualifications

• Total experience – 3 to 10 years in power electronics hardware design, preferably in EV, automotive, industrial drives, chargers, DC-DC converters, motor controllers or high-voltage systems.
• M.E. / M.Tech in Power Electronics and Drives.
• Knowledge of power electronics fundamentals, HV EV systems, components selection, magnetics design, schematics designs, thermal and electrical derating, EMI EMC design basic

Responsibilities

• Design and develop hardware for 400V EV power electronics systems including Motor Control Unit/Traction Inverter, Power Distribution Unit, On-Board Charger, DC-DC Converter, DC Bus interconnect architecture, X-in-1 system level integration
• Perform detailed hardware architecture definition based on system requirements, vehicle requirements, power ratings, thermal limits, safety requirements, and packaging constraints
• Select suitable components for high voltage EV applications, including IGBT/SiC/MOSFET, Gate Drivers, DC Link Capacitors, Sensors, Sensing circuits, contactors, fuses, magnetics, EMI/EMC filters, Busbars, etc
• Carry out component derating analysis and prepare design calculations
• Develop detailed schematics for power stages, gate drivers, sensing paths, auxiliary power supplies, protections, control cards, comm interfaces, HVIL and safety circuits
• Work closely with PCB layout engineers for high current layout, high voltage creepage and clearance, loop optimisations, EMI-EMC sensitive routing, isolation barriers, vias and copper balancing, groundings, etc.
• Carry out functional bring-up of prototype hardware boards and complete EV power electronics systems.
• Perform board level and subsystem level testing.
• Support integration testing with motor, gearbox, battery simulator, dyne, vehicle controller and BMS.
• Support integration of MCU, PDU, OBC, DC-DC, motor, gearbox, cooling system and control electronics into a compact X-in-1 EV drivetrain system.
• Support design reviews, schematic reviews, PCB reviews, prototype reviews and customer/OEM technical discussions.
• Coordinate with mechanical, thermal, software, motor, gearbox and vehicle integration teams.

Skills

Power electronics design

HV EV systems

Analog & digital circuits

Semiconductor devices

Schematic design

PCB coordination

Prototype bring-up

System integration

Education

M.E./M.Tech in Power Electronics and Drives

Job description

Job Description: Power Electronics Engineer – EV Drivetrains
Location: Bangalore
Experience: 7-10 years
About The Role
We are looking for a Power Electronics Hardware Engineer to support the development of high-voltage EV drivetrain electronics for our X-in-1 integrated powertrain systems. The role involves hardware design, component selection, schematic development, PCB design coordination, prototype bring-up, validation support, and system integration for 400 V and 800 V EV power electronics platforms. The engineer will work on key subsystems such as the Motor Control Unit/Inverter, PDU, On-Board Charger, DC-DC Converter, DC bus architecture, gate driver circuits, sensing circuits, power supplies, protection circuits, and system-level hardware integration. This role is suitable for candidates with strong fundamentals in power electronics hardware design, EV high-voltage systems, analog/digital circuits, semiconductor devices, and product development from concept to functional prototype.
Roles And Responsibilities

• Design and develop hardware for 400V EV power electronics systems including Motor Control Unit/Traction Inverter, Power Distribution Unit, On-Board Charger, DC-DC Converter, DC Bus interconnect architecture, X-in-1 system level integration
• Perform detailed hardware architecture definition based on system requirements, vehicle requirements, power ratings, thermal limits, safety requirements, and packaging constraints.
• Select suitable components for high voltage EV applications, including IGBT/SiC/MOSFET, Gate Drivers, DC Link Capacitors, Sensors, Sensing circuits, contactors, fuses, magnetics, EMI/EMC filters, Busbars, etc
• Carry out component derating analysis and prepare design calculations
• Develop detailed schematics for power stages, gate drivers, sensing paths, auxiliary power supplies, protections, control cards, comm interfaces, HVIL and safety circuits
• Work closely with PCB layout engineers for high current layout, high voltage creepage and clearance, loop optimisations, EMI-EMC sensitive routing, isolation barriers, vias and copper balancing, groundings, etc.
• Carry out functional bring-up of prototype hardware boards and complete EV power electronics systems.
• Perform board level and subsystem level testing.
• Support integration testing with motor, gearbox, battery simulator, dyne, vehicle controller and BMS.
• Support integration of MCU, PDU, OBC, DC-DC, motor, gearbox, cooling system and control electronics into a compact X-in-1 EV drivetrain system.
• Support design reviews, schematic reviews, PCB reviews, prototype reviews and customer/OEM technical discussions.
• Coordinate with mechanical, thermal, software, motor, gearbox and vehicle integration teams.

Eligibility

• Total experience – 3 to 10 years in power electronics hardware design, preferably in EV, automotive, industrial drives, chargers, DC-DC converters, motor controllers or high-voltage systems.
• M.E. / M.Tech in Power Electronics and Drives.
• The candidate should have knowledge of power electronics fundamentals, HV EV systems, components selection, magnetics design, schematics designs, thermal and electrical derating, EMI EMC design basic

Desired Skills

• Understanding of automotive development processes

Experience working with suppliers, semiconductor vendors and PCB manufacturers
Hands-on approach to hardware bring-up and debugging
Willingness to work in fast-paced EV product development environments
L&T Company Overview / About Us
L&T is a USD 30 billion Indian multinational engaged in EPC Projects, Hi-Tech Manufacturing, and Services, operating across multiple geographies. A strong, customer–focussed approach and the constant quest for top-class quality have enabled L&T to attain and sustain leadership in its major lines of business for eight decades.
Given L&T’s capability in strategic electronics and leveraging its foray into semiconductor design and well-established capabilities in L&T Technology Services, the business is expanding its offerings to cover industrial electronic modules, products and systems in critical sectors of Power Electronics, Automotive Electronics, Industrial Robotics & Automation, Communication Platforms and Electronic Systems Design & Manufacturing (ESDM). The focus products under Automotive Electronics are ADAS, Electrification & Connectivity related products.