Senior BESS Integration Engineer

We are seeking a highly skilled Senior Battery Energy Storage Systems (BESS) Integration Engineer to lead the integration, commissioning, optimization, and long-term performance management of advanced battery energy storage systems. This role serves as a technical authority across battery technologies, power conversion systems, energy management systems, controls integration, and operational performance.

The ideal candidate will bring hands-on experience with utility-scale and commercial energy storage projects and possess a deep understanding of battery behavior, system integration, commissioning, troubleshooting, and controls. This individual will support projects throughout the full lifecycle-from development and design review through commissioning and ongoing operations.

What You’ll Be Doing

Battery System Performance & Optimization

• Evaluate, diagnose, and optimize lithium-ion and other battery technologies.
• Develop and implement battery balancing, conditioning, and performance recovery strategies.
• Analyze battery degradation trends and recommend operational improvements.
• Review Battery Management System (BMS) configurations and operating parameters.
• Conduct root-cause analysis of battery performance issues and system faults.

BESS Integration & Commissioning

• Integrate battery systems with leading Power Conversion System (PCS) platforms, including Sungrow, SMA, Sinexcel, EPC Power, DynaPower, and others.
• Configure communications between BMS, PCS, EMS, SCADA, and utility systems.
• Support commissioning and startup activities for commercial and utility-scale BESS projects.
• Develop commissioning procedures, testing protocols, and acceptance criteria.
• Validate system functionality, safety, and operational readiness.

Controls & Energy Management

• Support configuration and optimization of energy management and control strategies, including:
• Peak shaving
• Load shifting
• Demand response
• Frequency regulation
• Solar-plus-storage optimization
• Microgrid operation
• Troubleshoot interactions between EMS, SCADA, PCS, and utility control systems.
• Support development of control sequences and operating logic.

System Performance & Technical Support

• Monitor fleet performance and identify optimization opportunities.
• Analyze operational and battery performance data.
• Develop corrective action plans for underperforming assets.
• Support warranty investigations and vendor technical discussions.
• Provide technical leadership during issue resolution and system improvements.

Project Development & Execution

• Review system designs, equipment specifications, and integration architectures.
• Support proposal development and technical due diligence efforts.
• Coordinate with EPC contractors, utilities, equipment manufacturers, and project stakeholders.
• Provide technical leadership throughout project lifecycle., Success will be measured by:
• Successful commissioning and integration of BESS projects.
• High system availability and operational performance.
• Reduction of battery degradation and performance issues.
• Timely resolution of technical challenges.
• Optimization of energy throughput and system efficiency.
• Compliance with safety, operational, and regulatory requirements.

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, Energy Systems Engineering, or a related technical discipline.
• 5+ years of direct experience working with Battery Energy Storage Systems (BESS).
• Strong understanding of:
• Battery Management Systems (BMS)
• Power Conversion Systems (PCS)
• Energy Management Systems (EMS)
• SCADA systems
• Utility interconnection requirements
• Experience balancing, conditioning, and troubleshooting lithium-ion battery systems.
• Experience integrating batteries with multiple inverter and PCS manufacturers.
• Familiarity with industrial communication protocols, including Modbus, DNP3, SunSpec, and CANBus.
• Strong analytical, troubleshooting, and problem-solving capabilities., * Experience supporting utility-scale or commercial energy storage projects.
• Knowledge of UL 9540, UL 9540A, NFPA 855, IEEE 1547, and National Electrical Code (NEC) requirements.
• Experience with solar-plus-storage systems.
• Familiarity with microgrid controls and distributed energy resource integration.
• Experience commissioning battery storage systems larger than 1 MW.
• NABCEP Energy Storage Certification or equivalent industry certification.
• Experience working across multiple battery, PCS, EMS, and SCADA platforms.

$120,000-$150,000+ annually, depending on experience, project scale expertise, and utility-scale BESS background.