Solar Applications Engineer II

Cal Solar Inc.; San Diego (CA); Hybrid; USD 80,000 - 90,000; Full time

Benefits offered by this job

401(k)

Dental Insurance

Health Insurance

Paid Time Off

Vision Insurance

Job summary

Cal Solar Inc. is seeking an experienced Solar Applications Engineer II to lead full-scope design, preconstruction estimating, and design reviews for complex solar, battery storage, and EV charging projects across rooftop, carport, and ground-mount deployments.

You will perform electrical and code analyses, manage estimating tools, and mentor junior engineers while working in a hybrid remote environment within California.

Qualifications

• Bachelor’s degree in a relevant engineering field.
• 3–5+ years in commercial solar PV, BESS, or EV charging design.
• Proficient in NEC 70, CEC, and interconnection rules.
• Strong written and verbal communication; able to work remotely.

Responsibilities

• Lead preconstruction design for solar, BESS, and EV infrastructure.
• Conduct electrical/code analysis including transformer sizing and fault current analysis.
• Manage multi-scope estimating and vendor quotes for components.
• Lead design review page-turn meetings and pre-mobilization sessions.
• Refine SOPs and mentor entry-level engineers.

Skills

Commercial solar PV design

Battery storage design

EV charging design

Estimating

Education

Bachelors in Electrical/Civil Eng

Tools

CAD software

Helioscope

PVSyst

Energy Toolbase

Job description

Solar Applications Engineer II

• Base Salary Range: $80,000.00 – $90,000.00 annually
• Job Type: Full-Time (Exempt)
• Physical Setting: Hybrid / Full Remote
• Benefits:
  • 401(k)
  • Dental Insurance
  • Health Insurance
  • Paid Time Off
  • Vision Insurance

Position Summary

The Solar Applications Engineer II is an experienced technical professional responsible for leading full-scope application engineering, preconstruction design, and estimating across complex commercial, industrial (C&I), and multi-building solar PV, battery storage (BESS), and EV charging projects. Operating with independence, this role conducts electrical and code evaluations, manages multi-scope estimating tools, and evaluates equipment options for value engineering

Key Responsibilities

• Full-Scope Application & System Design: Lead preconstruction design development for commercial solar, battery storage (BESS), and EV infrastructure across rooftop, carport, and ground-mount applications, optimizing system performance and constructability.
• Advanced Electrical & Code Analysis: Perform electrical engineering evaluations including line-side vs. load-side taps, transformer sizing, overcurrent protection (OCPD), voltage drop calculations, and short-circuit fault current analysis in compliance with NEC 70 and local AHJ standards.
• Multi-Scope Estimating & Value Engineering: Master estimating platforms to build comprehensive project estimates. Solicit and evaluate competitive vendor quotes for modules, inverters, racking, energy storage, and electrical infrastructure equipment.
• Field Page-Turns & Preconstruction Integration: Lead Design Review Page-Turn Meetings and Pre-Mobilization Meetings with Construction Managers and Field Project Engineers, ensuring a seamless transition from estimating to field execution.
• SOP Refinement & Mentorship: Maintain and update internal SOP workflows, estimating databases, and layout software templates while providing day-to-day technical guidance to entry-level applications engineers.

Qualifications & Technical Requirements

• Education: Bachelor’s degree in Electrical Engineering, Civil Engineering, or related technical discipline.
• Experience: 3 – 5+ years of direct experience in commercial solar PV, BESS, and/or EV charging design, engineering, and preconstruction estimating.
• Advanced Software Mastery: Proficiency in CAD software, Helioscope, PVSyst, Energy Toolbase, and advanced bidding platforms.
• Codes & Standards: In-depth working knowledge of National Electrical Code (NEC 70), California Electrical Code (CEC), and utility interconnection rules.
• Communication & Remote Autonomy: Strong technical writing and verbal skills with a proven ability to manage multiple bid deadlines independently in a full remote work environment.

Company Description

Cal Solar Inc. specializes in the design and construction of solar energy solutions including Solar PV (Electric), Solar Water Heating, Battery Storage, and EV Charging systems. Serving a range of building types such as multifamily, commercial, offices, schools, and low-income housing, the company offers comprehensive services that span design, engineering, installation, maintenance, and financing. With offices located in Los Angeles, San Diego, and San Rafael, Cal Solar Inc. provides services across the entire state of California. For more information, visit www.calsolarinc.com or call [phone].