Senior BESS Engineer – Sizing & Tech Optimization

Hydrogen UK Ltd; Juno Beach (FL); Hybrid; USD 44,000 - 73,000; Full time

Job summary

Hydrogen Group seeks a Senior BESS Engineer for a 12‑month contract in Juno Beach, FL. You will lead utility-scale BESS sizing, optimize system designs and evaluate battery technologies to support interconnection studies and project economics.

You will develop automation tools and workflows, apply AI/data analytics to improve accuracy, and collaborate with engineering and software teams to scale digital sizing tools across projects.

Qualifications

• Bachelor's or Master's degree in Electrical/Mechanical/Chemical/Materials Engineering or related discipline.
• Strong utility-scale BESS engineering experience.
• Knowledge of AC and DC sizing methodologies.
• Understanding of battery degradation, system losses, augmentation/overbuild strategies and thermal impacts.

Responsibilities

• Provide technical expertise for utility-scale BESS sizing, methodology, assumptions and optimization.
• Develop and optimize end-to-end BESS sizing from interconnection through substations, transformers, PCS/inverters, DC systems and batteries.
• Account for system losses, battery degradation, augmentation and overbuild strategies, temperature effects and operating constraints.
• Incorporate project-specific technical and contractual requirements into sizing calculations.
• Develop, maintain and improve BESS sizing methodologies, calculators and technical guidance.
• Maintain records of sizing assumptions, inputs and results; review sizing with stakeholders.
• Maintain BESS and PCS equipment data used within sizing tools
• Evaluate existing and emerging battery and energy storage technologies
• Assess battery performance characteristics including degradation, efficiency, available energy, reliability, SOC/SOH
• Develop preliminary system sizing and cost estimates to support technology evaluations
• Analyze technical data and communicate findings to stakeholders
• Develop and improve tools to automate BESS sizing and forecasting
• Apply data analytics, programming and AI approaches to improve engineering quality
• Collaborate with software teams to translate methods into scalable tools

Skills

BESS engineering

Sizing and optimization

AC/DC sizing methodologies

Battery degradation knowledge

Data analytics

Python

Excel/VBA

Strong communication

Team collaboration

Education

Bachelor's degree in Electrical Engineering

Master's degree in Electrical/Mechanical/Chemical/Materials Engineering

Tools

Python

Power BI

Excel

PCS/inverters

Job description

Hydrogen Group seeks a Senior BESS Engineer for a 12‑month contract in Juno Beach, FL. You will lead utility-scale BESS sizing, optimize system designs and evaluate battery technologies to support interconnection studies and project economics.

You will develop automation tools and workflows, apply AI/data analytics to improve accuracy, and collaborate with engineering and software teams to scale digital sizing tools across projects.