Senior Performance Engineer (United States)

HyperStrong is a global leader in Battery Energy Storage Systems (BESS), delivering utility-scale energy storage solutions that support grid reliability and the transition to renewable energy.

As our North American business continues to expand, we are looking for an experienced Senior Performance Engineer to join our growing Service team. This role is ideal for engineers who enjoy solving complex technical challenges, analyzing system performance, and working closely with field service, commissioning, and engineering teams to continuously improve utility-scale BESS projects.

What You'll Do

As a Senior Performance Engineer, you'll serve as the technical expert supporting performance analysis, advanced troubleshooting, and system optimization across our operational BESS fleet.

Your responsibilities include:

• Analyze battery system performance, usable capacity, efficiency, availability, and compliance with contractual requirements.
• Investigate abnormal performance trends, degradation indicators, and system limitations while driving corrective actions through resolution.
• Independently diagnose complex issues involving BMS, PCS, EMS, SCADA, and monitoring platforms.
• Analyze alarms, event logs, telemetry, and time-series data to identify root causes across hardware, software, controls, and configuration layers.
• Develop electrical test plans, evaluate test results, and provide technical recommendations during root cause investigations.
• Lead technical troubleshooting during Tier 1 outages, including diagnostic strategy, testing, system recovery, and validation.
• Support battery capacity testing, performance testing, commissioning, integration testing, system tuning, and acceptance testing.
• Serve as the primary technical escalation point for performance-related field issues.
• Provide technical support to Field Service and Commissioning teams during critical troubleshooting and recovery activities.
• Prepare technical reports, performance summaries, RCA documentation, and customer-facing technical findings.
• Maintain detailed technical records to support continuous improvement initiatives.
• Collaborate with Product Engineering, Software Engineering, and global engineering teams to improve system performance, firmware, software, and service processes.
• Provide technical input for customer communications, technical risk assessments, and engineering decision-making.

What We're Looking For

Required Qualifications

• Bachelor's degree in Electrical Engineering, Power Engineering, or a related technical discipline (or equivalent practical experience).
• 4+ years of experience supporting utility-scale Battery Energy Storage Systems (BESS), power electronics, or grid-connected energy systems.
• Hands-on experience with battery capacity testing, performance testing, commissioning, or system acceptance testing.
• Proven experience troubleshooting complex utility-scale BESS systems using BMS, PCS, EMS, SCADA, and monitoring platforms.
• Strong understanding of:
• Battery performance, degradation mechanisms, and capacity validation
• BMS architecture, controls logic, and battery data interpretation
• PCS operation, grid interconnection, and protection systems
• Experience analyzing alarms, event logs, telemetry, and time-series data to perform Root Cause Analysis (RCA).
• Ability to independently lead technical troubleshooting efforts during critical system outages.
• Strong communication skills with the ability to work effectively across engineering, commissioning, service, and customer teams.
• Willingness to support commissioning activities, testing, and emergency outage response when required.

Preferred Experience

Candidates with experience in one or more of the following will be highly valued:

• Utility-scale Battery Energy Storage Systems (BESS)
• Renewable Energy
• Grid Integration
• SCADA / EMS / PCS / BMS
• Battery Performance Engineering
• Commissioning
• Field Service
• Root Cause Analysis (RCA)
• Capacity Testing
• System Validation
• Utility-scale Solar + Storage