Sr.

Mechanical Design

Engineer | Power Electronics Products & Systems Role Purpose Design and deliver robust, thermally efficient, and manufacturable mechanical solutions for power electronics products and systems, ensuring reliability, safety, serviceability, and compliance across indoor and outdoor deployments.

Key Responsibilities Mechanical Architecture & Enclosure Design

Design product and system-level mechanical architecture for:

Solar inverters (string & central)

PCS & BESS containers

EV chargers (AC/DC) Electrolysers & power supply cabinets

Develop enclosures, cabinets, skids, and container layouts.

Ensure IP protection, corrosion resistance, and environmental robustness.

Thermal & Cooling Design

Design thermal management solutions

Forced air cooling

Liquid cooling (cold plates, heat exchangers)

Perform thermal simulations (CFD) and support validation.

Optimize airflow paths, heat sink design, and component placement.

Structural & Mechanical Analysis

Perform structural analysis for

Static & dynamic loads

Transportation & seismic conditions

Ensure compliance with wind, seismic, and shock/vibration requirements.

Design for safe lifting, handling, and installation.

Integration with Electrical & Control Systems

Coordinate with electrical and control teams on:

Component placement & clearances

Cable routing and bending radius

EMI shielding & segregation

Ensure creepage, clearance, and safety requirements are mechanically supported.

DFM, DFA & Industrialization

Design for manufacturability, assembly, and serviceability.





Select materials and finishes considering cost, durability, and setting.

Support prototype builds, NPI, and production ramp-up.

Drive cost reduction and weight optimization initiatives.

Testing, Validation & Compliance

Support mechanical and environmental testing:

Thermal cycling

IP / ingress tests

Vibration & shock tests

Support certification to IEC, UL, and ISO standards.

Resolve mechanical field issues and drive corrective actions.

Documentation & Configuration Control

Prepare and maintain

3D models & 2D drawings

BOMs & assembly instructions

Installation and service manuals

Ensure proper revision and change management.

Key KPIs Thermal performance & reliability

First-pass build success

Cost & weight targets

Field failure rate Education & Experience BE / BTech in Mechanical Engineering

5–12+ years in mechanical design for power electronics or industrial equipment

Experience in Enclosure & cabinet design, Strong understanding in Thermal management & CFD, Structural analysis

CAD tools (Creo, SolidWorks, NX)

DFM/DFA principles Preferred Industry Background Solar inverter OEMs

PCS / BESS system manufacturers

EV charging infrastructure

Industrial power electronics Preferred Experience Worked on 30+ kW-level converters for EV chargers, ESS, solar inverters, onboard chargers. Knowledge of automotive ISO 26262, IEC 61800, IEC 61000 standards (preferred). Exposure to SiC/GaN based systems.

Experience with FPGA or RTOS is a plus. End of Document------------------------------------

📌 Sr. Mechanical Design Engineer (Bengaluru)
🏢 Larsen u0026 Toubro
📍 Bengaluru