AH_101 - Electrical Design Engineer

Marutee; Bengaluru; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Marutee invites an Electrical Design Engineer to lead the electrical architecture for EV charging stations, from utility input to individual chargers, focusing on power distribution, PDUs, HV/LV panels, switchgear and protective devices.

You will develop SLDs, wiring diagrams, layouts, and BOMs, coordinate with mechanical, controls and electronics teams, and ensure safety, reliability, and compliance with IEC/IS standards.

Qualifications

• BE/B.Tech in Electrical or EEE.
• 3-7 years of experience in electrical design and EV charging infra.
• Knowledge of grid-to-charger distribution and multi-charger installations.
• Experience with HV/LV systems and protection devices.
• Ability to read electrical schematics, SLDs and wiring diagrams.

Responsibilities

• Design complete electrical architecture for EV charging stations, from utility/grid input to individual chargers.
• Develop power distribution schemes for multiple EV chargers at a single location.
• Perform electrical calculations for connected load, maximum demand, voltage drop, and fault currents.
• Develop Single-Line Diagrams (SLDs), electrical schematics and wiring diagrams.
• Design and develop Power Distribution Units (PDUs) for EV charging applications.
• Design HV/LV panels, switchgear, busbars, breakers and metering systems.

Skills

Electrical design

EV charging

HV/LV systems

PDU development

Schematic design

Power distribution

Electrical calculations

3-Phase systems

Education

BE/B.Tech – Electrical / Electrical & Electronics Engineering or equivalent

Tools

SolidWorks

AutoCAD Electrical

EPLAN

MS Excel

Job description

Job Summary

We are looking for an Electrical Design Engineer with 3-7 years of relevant experience in EV charging infrastructure, electrical system design, power distribution, PDU development, or HV/LV electrical systems.

The candidate will be responsible for designing the complete electrical architecture of EV charging stations, from utility/grid input to individual chargers, including power distribution, protection systems, PDU design, HV/LV panels, switchgear, electrical calculations, layouts, and detailed design documentation.

Key Responsibilities

• Design complete electrical architecture for EV charging stations, from utility/grid input to individual chargers.
• Develop power distribution schemes for multiple EV chargers at a single location.
• Perform electrical calculations for:
  • Connected load, maximum demand, diversity & demand factors
  • Voltage drop and short-circuit/fault current
  • Cable and busbar sizing
  • MCB/MCCB/ACB/fuse selection
  • Earthing & grounding
  • Power factor and reactive power
  • Transformer and DG capacity
  • Thermal loading and derating
• Develop Single-Line Diagrams (SLDs), electrical schematics and wiring diagrams.
• Design and develop Power Distribution Units (PDUs) for EV charging applications.
• Design/specify HV/LV panels, switchboards, switchgear, busbars, breakers, contactors, isolators, protection devices and metering systems.
• Develop electrical layouts, panel layouts, cable routing, cable schedules, termination details and interconnection drawings.
• Ensure proper segregation and protection of HV, LV, control and communication circuits.
• Coordinate electrical design with mechanical, civil, charger, controls and electronics teams.
• Review designs for safety, reliability, maintainability, manufacturability and applicable standards.
• Prepare technical specifications, BOMs, schematics and design documentation.
• Support component selection and supplier interactions for panels, switchgear, cables, connectors and protection devices.
• Support installation, commissioning, troubleshooting and resolution of electrical design issues.
• Review existing installations and recommend improvements for capacity expansion and future charger additions.

Required Technical Skills

• Bachelor’s degree in Electrical & Electronics Engineering (EEE), Electrical Engineering, or equivalent.
• 3-7 years of relevant experience in electrical design, EV charging infrastructure, industrial electrical systems, power distribution, PDU development or similar applications.
• Good understanding of EV charging systems and charging station electrical architecture.
• Strong knowledge of grid-to-charger power distribution and multi-charger installations.
• Experience in sizing:
  • Cables and wires
  • Busbars
  • Switchgear and protection devices
  • Panels and PDUs
  • Transformers
  • Earthing systems
  • Power distribution equipment
• Knowledge of HV/LV systems, switchgear, panel boards and protection systems.
• Experience in PDU design and development, preferably in automotive, EV or industrial applications.
• Experience with HV panel board and switchgear design/development.
• Understanding of electrical protection coordination and basic selectivity/discrimination.
• Good knowledge of electrical safety, isolation, earthing and fault protection.
• Knowledge of relevant IEC/IS and applicable EV charging/electrical installation standards.
• Ability to read and develop electrical schematics, SLDs and wiring diagrams.

Practical Experience With

• SolidWorks – 3D modelling and mechanical/electrical packaging of panels, PDUs and components.
• AutoCAD Electrical, EPLAN or equivalent electrical design/layout tools.
• Microsoft Excel for electrical calculations, sizing and load analysis.
• Familiarity with electrical simulation/calculation tools is an added advantage.

Preferred Experience

• Experience with AC and DC EV charging systems, including high-power charging.
• Experience designing infrastructure for multiple chargers at a single site.
• Experience with HT/LT distribution systems, transformers, APFC systems, MDBs, SMDBs, MCCs and distribution panels.
• Experience with HV cable selection, termination and routing.
• Knowledge of energy metering, protection relays, surge protection and power quality.
• Experience in automotive, EV, industrial automation, renewable energy or power electronics.
• Exposure to site installation, commissioning and electrical troubleshooting.

Key Competencies

• Strong analytical and electrical calculation skills.
• Ability to convert system-level power requirements into practical electrical architecture.
• Strong understanding of electrical safety and design standards.
• Good technical documentation and communication skills.
• Ability to work independently and coordinate with cross-functional teams.
• Practical approach to design, component selection, cost optimization and manufacturability.
• Ability to own electrical design from concept - calculations - SLD/schematic - detailed design - prototype/panel development - installation - commissioning.

Experience

3-7 years of relevant experience

Education

BE/B.Tech – Electrical / Electrical & Electronics Engineering or equivalent