Senior BESS Engineer - Data-Driven Performance & Delivery

Crossley Scott; United States; On-site; USD 100,000 - 150,000; Full time

Job summary

Crossley Scott in the United States is seeking a Senior BESS Engineer to support customers across the Americas, combining battery performance, technical analysis and customer delivery.

You will work directly with developers, asset owners, O&M providers and performance teams throughout the lifecycle of a BESS project, delivering platform training and actionable recommendations. Travel ~25% to customer meetings and workshops across the region.

Qualifications

• Engineering, science or related technical qualification, or equivalent industry experience.
• Hands-on BESS experience in performance, commissioning, or O&M.
• Proficiency in Python for data analysis and troubleshooting.
• Familiarity with battery technology degradation, SoC, and voltage/temperature behavior.
• Knowledge of data acquisition and communications protocols (Modbus, IEC-104, OPC-UA, REST, SFTP).
• Understanding of US power markets and ISO/RTO environments.
• Spanish language skills are a plus.

Responsibilities

• Become a trusted technical advisor for BESS customers across the Americas.
• Lead pre-sales discovery, data assessments and system architecture with cross-functional teams.
• Own onboarding, review electrical docs, and map data flows in BESS architecture.
• Configure and validate performance metrics with clean data for analysis.
• Investigate sensor/data-quality issues and data gaps.
• Analyze battery performance during commissioning and testing, identify issues.
• Prepare technical reports and actionable recommendations.
• Deliver platform training to O&M teams and asset managers.
• Voice of the customer to Product/Engineering with feedback.
• Travel approximately 25% for meetings and on-site activities.

Skills

Hands-on BESS experience

Python for data analysis

Data platforms (Databricks)

Customer-facing communication

Modbus, IEC-104, OPC-UA, REST APIs and

US power markets awareness

Spanish language skills (beneficial)

Education

Engineering or Science degree

Tools

Databricks

Modbus/IEC-104/OPC-UA/REST/SFTP

Job description

Crossley Scott in the United States is seeking a Senior BESS Engineer to support customers across the Americas, combining battery performance, technical analysis and customer delivery.

You will work directly with developers, asset owners, O&M providers and performance teams throughout the lifecycle of a BESS project, delivering platform training and actionable recommendations. Travel ~25% to customer meetings and workshops across the region.