Electrical Engineer I - Utility-Scale Solar + BESS

Castillo Engineering; United States; Hybrid; USD 65,000 - 90,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Paid time off

Company holidays

Professional growth opportunities

Job summary

Castillo Engineering is seeking an Electrical Engineer I to design utility-scale solar and battery storage projects, deliver IFC drawings, and perform electrical studies under mentorship. You will work on AutoCAD tasks, calculations, and energy modelling in a collaborative, process-driven environment.

The role offers a clear advancement path, mentorship, and opportunities to contribute to clean-energy projects while expanding your skills in a close-knit team.

Qualifications

• Bachelor’s in electrical engineering or related discipline.
• 2+ years’ experience designing commercial, DG or utility-scale solar PV systems.
• 2+ years’ experience with AutoCAD including layer control, dimensions, sheets and blocks.
• Proficiency in MS Office, AutoCAD, PVSyst.
• NABCEP Certification preferred

Responsibilities

• Design and engineer PV or BESS systems from 5 MW to 500+ MW.
• Create construction drawings and electrical diagrams in AutoCAD.
• Perform LVAC, MVAC and DC calculations for cable sizing and voltage drop.
• Conduct energy modelling using PVSyst, SAM, etc.
• Coordinate with clients, utilities, permit agencies and contractors.
• Lead project calls, respond to RFIs, and support site visits as needed.
• Adhere to NEC and safety standards in all designs.

Skills

Communication

Teamwork

Time management

Attention to detail

NEC knowledge

Education

Bachelor's in Electrical Engineering

Tools

AutoCAD

PVSyst

MS Office

Job description

Build What’s Next With Castillo Engineering

At Castillo Engineering, you will design utility‑scale solar and battery storage projects that are shaping the future of energy while accelerating your own career in the process. We’re looking for an Electrical Engineer I who thrives on meaningful project ownership, has strong communication skills, a commitment to excellence, and a passion for supporting clean‑energy projects in a process‑driven, collaborative environment.

Why You’ll Love Working Here

We are a fast‑growing, mission‑driven firm where engineers are trusted, supported, and given clear opportunities to advance. You will work in a collaborative environment that values mentorship, innovation, and professional growth, allowing you to develop your skills, make a visible impact, and build confidence as part of a close‑knit team.

Position Overview

An Electrical Engineer I is a key contributor in the design and delivery of issue‑for‑construction (IFC) drawings and reports for utility‑scale solar and battery storage projects. This role supports the team by completing AutoCAD design tasks, calculations, and electrical studies under the guidance of experienced mentors. The position includes a structured advancement path that promotes continuous skill development, increased responsibility, and long‑term career growth.

What You’ll Do

• Design and Engineer PV or BESS systems from 5 MW to 500+ MW in size.
• Generate accurate and detailed construction drawings using AutoCAD including but not limited to one‑line and three‑line diagrams, electrical layouts, AC/DC schematics, AC/DC cable schedules, wiring diagrams, grounding, trenching, and conduit details.
• Perform LVAC, MVAC and DC calculations related to cable sizing, voltage drop, string sizing etc.
• Site specific energy modelling using PVSYST, SAM etc
• Coordinate activities between clients, utilities, permit agencies, contractors, and other engineering firms.
• Manage individual projects or project portfolios by leading client calls, responding to RFIs, reviewing submittals and performing site visits as needed.
• Ensure compliance with company, industry, trade, and jurisdictional safety standards, practices, and codes.
• Perform any other duties as needed.

What You Bring

• Bachelor’s in electrical engineering or other related discipline.
• 2+ years’ experience designing commercial, DG or utility scale solar PV systems.
• 2+ years’ experience working with AutoCAD with an understanding of layer control, annotative dimensioning/scaling, sheet sets, blocks, xrefs, line weights, plot files, and file transmission.
• Proficiency in MS Office Suite, AutoCAD, PVSyst
• Excellent written and oral communications skills.
• Sound understanding of the National Electrical Code (NEC).
• Excellent Time Management and ability to work in teams
• Research Oriented, Attention to Detail
• Experience with designing BESS systems preferred
• Hands on experience installing, commissioning, testing, and troubleshooting solar PV systems preferred
• NABCEP Certification preferred

Physical Requirements

• Requires prolonged sitting (50%), frequent bending (5%), stooping (5%), and standing (25%).
• Requires the ability to lift up to 75 pounds.
• Involves a high‑stress environment due to responsibility for company operations and meeting deadlines.
• Requires handling detailed and complex concepts, balancing multiple tasks simultaneously.
• Hours may be long and irregular depending on workload and deadlines.
• Requires hand‑eye coordination and manual dexterity.
• Requires normal vision range and color perception.

Work Environment & Benefits

• This role has is preferred onsite in Maitland, FL, or has a remote work option.
• Competitive salary based on experience
• Health, dental, and vision insurance (if applicable)
• Paid time off, company holidays, and professional growth opportunities
• Supportive culture committed to mentorship, innovation, and continuous improvement