Solar Design Engineer – Rooftop Solar

Loom Solar; Faridabad District; On-site; INR 600,000 - 900,000; Full time

Job summary

Loom Solar is seeking a Solar Design Engineer in Faridabad to independently design rooftop solar PV systems for residential and small commercial clients. You will convert site data and requirements into practical, cost-effective designs and coordinate with Sales, Project and Procurement teams.

The role requires hands-on expertise in DC/AC sizing, SLDs, BOM/BOQ, and DISCOM compliance, with strong AutoCAD and PVsyst skills. Join a fast-growing, vertically integrated solar company in Haryana.

Qualifications

• Good understanding of rooftop solar PV systems.
• Knowledge of solar PV module and inverter selection, string configuration, DC/AC sizing and shadow analysis.
• Knowledge of cable sizing, earthing, lightning protection, AC/DC protection and rooftop mounting structures.
• Understanding of net metering and grid connectivity requirements.
• Proficiency in AutoCAD.
• Working knowledge of PVsyst or similar solar design software.
• Good working knowledge of MS Excel.
• Ability to prepare and interpret SLDs and electrical layouts.

Responsibilities

• Design rooftop solar PV systems typically ranging from 1 kWp to 100 kWp, for residential and small C&I projects.
• Prepare system layouts based on roof area, customer load, sanctioned load and energy consumption.
• Select appropriate modules, inverters, mounting structures, DC/AC cables, protections and other BOS components.
• Prepare single-line diagrams (SLD), layout drawings and basic electrical schematics.
• Carry out string sizing, inverter sizing, DC/AC capacity calculations and voltage/current calculations.
• Optimize module placement considering roof geometry, orientation, tilt and shading.
• Review site survey information, photographs, measurements and electricity bills.
• Provide design inputs to the Sales team for customer proposals and preliminary designs.
• Prepare accurate BOQ/BOM for project costing and procurement.
• Provide design drawings and technical documentation to the installation team and clarify design queries.
• Support net-metering/grid-connectivity documentation and ensure designs comply with DISCOM, CEA and MNRE guidelines.
• Maintain design templates, drawings, calculation sheets and project records.

Skills

AutoCAD

PVsyst

MS Excel

SLD drafting

Rooftop solar design

Cable sizing

Electrical layouts

Net metering knowledge

Education

B.E./B.Tech in Electrical Engineering

Diploma in Electrical Engineering

Renewable Energy related discipline

Tools

AutoCAD

PVsyst

MS Excel

Job description

Loom Solar, founded in 2018 by visionary brothers Amol and Amod Anand, has rapidly emerged as one ofIndia's Fastest Growing D2C brands. This Faridabad, Haryana based solar company specializes in the manufacturing of cutting-edge solar panels, inverters, and lithium batteries, catering to both residential and commercial needs.

Our journey began with a mission to revolutionize access to advanced solar technology across India, ensuring even the most remote areas benefit from sustainable energy solutions through our robust e-commerce platform. At Loom Solar, we are committed to driving the green energy transition and empowering every corner of India with reliable and innovative solar power solutions.

Job Description

Job Purpose

We are looking for a Solar Design Engineer who can independently handle the design and engineering of small rooftop solar PVsystems, primarily for residential and small commercial customers. The role will convert site information and customer requirements into practical,cost-effective and execution-ready solar designs, while coordinating closely with the Sales, Project and Procurement teams.

Key Responsibilities

• Design rooftop solar PV systems typically ranging from 1 kWp to 100 kWp, with focus on residential and small C&I projects.
• Prepare system layouts based on available roofarea, customer load, sanctioned load and energy consumption.
• Select appropriate modules, inverters, mountingstructures, DC/AC cables, protections and other BOS components.
• Prepare single-line diagrams (SLD), layoutdrawings and basic electrical schematics.
• Carry out string sizing, inverter sizing, DC/ACcapacity calculations and voltage/current calculations.
• Optimize module placement considering roofgeometry, orientation, tilt and shading.
• Review site survey information, photographs,measurements and electricity bills.
• Identify technical constraints such as roofstructure, shadow areas, access, cable routing and electrical connectionpoints.
• Provide technical inputs to the Sales team forcustomer proposals and prepare preliminary designs and generation estimates.
• Prepare accurate BOQ/BOM for project costing andprocurement.
• Provide design drawings and technicaldocumentation to the installation team and clarify design-related queriesduring execution.
• Support net-metering/grid-connectivitydocumentation and ensure designs comply with applicable DISCOM requirements,CEA regulations, MNRE guidelines and relevant electrical standards.
• Maintain design templates, drawings, calculationsheets and project records.

Requirements

Required Technical Skills

• Good understanding of rooftop solar PV systems.
• Knowledge of solar PV module and inverterselection, string configuration, DC/AC sizing and shadow analysis.
• Knowledge of cable sizing, earthing, lightningprotection, AC/DC protection and rooftop mounting structures.
• Understanding of net metering and gridconnectivity requirements.
• Proficiency in AutoCAD.
• Working knowledge of PVsyst or similar solardesign software.
• Good working knowledge of MS Excel.
• Ability to prepare and interpret SLDs andelectrical layouts.

Preferred Experience

• Experience in residential rooftop solar or smallC&I rooftop projects.
• Experience with 1-100 kWp systems.
• Experience with DISCOM/net-meteringdocumentation.
• Experience with a solar EPC company, rooftopinstaller, module manufacturer or inverter company.

Qualification

B.E./B.Tech/Diplomain Electrical, Electrical & Electronics, Renewable Energy or relatedengineering discipline

• Strong attention to detail.
• Ability to work on multiple designssimultaneously.
• Fast turnaround on customer-specific designs.
• Practical understanding of installationconstraints.
• Good coordination with Sales, Project andProcurement teams.
• Ability to work independently and take ownershipof designs.
• Good communication and problem-solving skills.

Key Performance Indicators(KPIs)

• Design turnaround time.
• Design accuracy and rework percentage.
• Number of designs completed per month.
• Technical feasibility accuracy.
• Reduction in execution-related design issues.
• Timely technical support to Sales and Projectteams.