Senior BESS Electrical Engineer

IS International; Northern (KY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

IS International Services is seeking a Senior BESS Electrical Engineer to drive electrical design from concept through execution for utility-scale battery storage projects.

In a fully remote role, you will own the electrical design process and mentor project teams, ensuring seamless integration of low- and medium-voltage components and interfacing with cross-functional teams to deliver high-performing renewable assets.

Qualifications

• 8+ years of total electrical engineering experience.
• 3–5 years of direct experience with Battery Energy Storage Systems (BESS).
• Proficient with power system modeling and engineering studies (ETAP/SKM).
• Bachelor’s or Master’s degree in Electrical Engineering.
• PE license preferred but not required.
• Strong knowledge of NEC, NFPA, IEEE, UL, IEC standards.
• Excellent communication in a fast-paced, remote, cross-functional team environment.

Responsibilities

• Develop and review electrical design packages for utility-scale BESS projects (SLDs, layouts, grounding, cable routing).
• Specify and integrate critical equipment such as PCS, battery enclosures, MV/LV transformers, and switchgear.
• Perform electrical calculations, cable schedules, and sizing assessments for utility-scale systems.
• Lead integration of Balance-of-Plant (BOP) systems across engineering disciplines.
• Ensure designs meet interconnection requirements and applicable standards.

Skills

Electrical design

Power system modeling

Communication

PE preferred

Code compliance

Education

B.S. or M.S. in Electrical Engineering

Tools

ETAP

SKM

Job description

Job Summary

IS International Services is seeking a Senior BESS Electrical Engineer to drive the engineering and technical review of utility-scale battery storage projects. In this fully remote senior position, you will own the electrical design process from concept through execution. You will mentor project teams, ensure seamless integration of low-voltage and medium-voltage components, evaluate balance-of-plant systems, and interface with cross-functional teams to deliver high-performing renewable energy assets.

Key Responsibilities

• Utility-Scale Design: Develop and review comprehensive engineering packages, including Single-Line Diagrams (SLDs), overall electrical layouts, grounding designs, and cable routing maps.
• Component Integration: Specify and integrate critical equipment such as Power Conversion Systems (PCS), battery enclosures, medium-voltage (MV) / low-voltage (LV) transformers, and switchgear.
• Technical Calculations: Perform and validate essential electrical engineering calculations, cable schedules, and sizing assessments for utility-scale systems.
• Multidisciplinary Coordination: Lead the integration of Balance-of-Plant (BOP) systems, collaborating across engineering disciplines to maintain technical accuracy and project alignment.
• Standards Compliance: Ensure all designs align with utility interconnection requirements and adhere strictly to NEC, NFPA, IEEE, UL, and IEC standards.

Qualifications & Requirements

• Core Experience: 8+ years of total electrical engineering experience.
• BESS Expertise: At least 3 to 5 years of direct experience dedicated to Battery Energy Storage Systems (BESS).
• Software Proficiency: Strong hands‑on experience performing power system modeling and engineering studies using ETAP and SKM.
• Education: Bachelor’s or Master’s degree in Electrical Engineering.
• Integrator Background: Previous professional experience working directly with utility‑scale BESS integrators is highly desirable.
• Licensure: A Professional Engineer (PE) license is preferred but not required for this position.
• Compliance Knowledge: Deep, operational understanding of industry codes (NEC, NFPA, IEEE, UL, IEC) and the utility grid interconnection process.
• Professional Skills: Excellent communication skills with a proven ability to thrive in a fast‑paced, remote, cross‑functional team environment.