The BESS Engineer is the fleet technical subject matter expert for battery energy storage systems. The role provides advanced support for battery systems, BMS, HVAC, fire safety systems, containers, cell, module and rack failures, firmware, and associated operating interfaces.

The position leads complex troubleshooting and root cause analysis using predictive and advanced analytics tools, operating data, event records, test results, inspections and OEM information. The engineer converts findings into practical corrective actions, SOPs, response plans and technical guidance the site and other O&M teams.

The role governs battery warranty and state-of-health analysis, serial-defect monitoring, capacity testing, battery balancing, SOC calibration scheduling and related predictive tools. The engineer promotes fleet learning and coordinates with OEMs, site teams and other specialists to implement sustainable technical improvements.

What you will do

Responsibilities, include, but not limited to:

• Provide fleet technical ownership for battery systems, BMS, HVAC, fire safety systems and containers, cell, module and rack failure topics.
• Lead advanced troubleshooting and RCA using predictive and advanced analytics tools, alarms, trends, event logs, test results and field evidence.
• Develop and maintain SOPs, troubleshooting guides and response plans for recurring or high-risk BESS issues.
• Manage technical evaluation of battery warranty and state-of-health topics and coordinate supporting evidence.
• Define and support capacity testing, battery balancing, SOC calibration scheduling, firmware management and post-change validation.
• Monitor serial defects and systemic failure patterns and recommend risk-based actions.
• Develop or govern related predictive tools and translate insights into field guidance and maintenance improvements.
• Support technical specifications & studies, lifecycle assessments and asset improvement initiatives.
• Support supplier reviews, warranty evidence, specifications and asset improvement projects.
• Contribute technical input to due diligence, commissioning support and new-asset integration.
• Participate in incident response, expert teams and supplier technical reviews.
• Maintain technical records, lessons learned and concise status reporting.

What you will bring

• Bachelor's degree in Electrical , Mechanical, Chemical, Energy or a closely related engineering discipline.
• Minimum 5 years of relevant field experience, including substantial exposure to utility-scale BESS or battery systems.
• OEM battery/BMS training or recognized battery-safety certification preferred.
• Strong knowledge of BESS architecture, battery systems, BMS, HVAC and fire safety systems
• Strong knowledge of Advanced fault diagnostics and RCA
• Strong knowledge of Battery SOH, warranty evidence, degradation and capacity testing
• Strong knowledge of Firmware, SOC calibration and technical change validation
• Experience in SOPs and technical contingency plan development
• Structured problem solving
• Clear technical communication
• Cross-functional collaboration
• Ownership and disciplined follow-through
• Technical writing and management reporting
• Supplier and stakeholder coordination
• Knowledge sharing and capability development
• A valid driver's license operable in all 50 states and Canada and a clean driving record. A clean driving records means:
• Ability/flexibility to travel for short and long term periods both domestically and internationally.

Please see below for additional information on Enel North America rewards.

Enel North America offers its regular full-time employees affordable, quality healthcare for you and your family, life insurance and disability benefits to provide security, and retirement benefits to help you plan for your financial future. In addition, we offer an array of other benefits such as flexible spending accounts, tuition reimbursement and professional development allowance.

Benefits are effective as of day one!

Some additional perks to working with Enel North America include:

401k with match fully vested as of day one. Enel-NA matches 100% of the first 4% that you contribute up to set IRS limits.

Generous PTO that supports work/life balance including: 4 weeks annually of vacation as well as personal days, volunteer days, your birthday off, paid holidays, and sick time. Proration may apply during first year of employment.

Paid leave programs

The opportunity to grow and develop your career with the support and mentorship of senior leaders.

The opportunity to work for one of the world's most recognizable and respected brands in the energy industry that believes by working together we can create a new energy era in which the world can become more sustainable.

Do you want to be a part of change ? Apply now and join the Solar O&M team to help drive the energy transition with us!

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