Senior BESS Inverter Performance Engineer

Welcome to e-STORAGE, a proud member of the Canadian Solar Inc. (NASDAQ: CSIQ) family! We’re leading the way in designing, building, and integrating advanced battery energy storage systems for utility-scale projects. Our mission? To accelerate the world’s renewable energy transition and create a more sustainable, resilient energy future for everyone.

This role is responsible for diagnosing inverter-related performance issues across operating BESS projects and driving corrective action with inverter vendors. The candidate must be able to identify whether issues are caused by inverter software, firmware, controls logic, hardware, design limitations, or site-level power system conditions. The role also owns retrofit execution tracking, including affected assets, deployment status, validation results, risks, and closure using Excel, Smartsheet, or similar tools.

What You’ll Be Doing as a Senior Performance Controls Engineer:

• Prioritize, investigate, and drive corrective actions for inverter-related performance issues across operating BESS projects.
• Perform root cause analysis using operational data, first principles, site evidence, and technical review to distinguish software, firmware, controls, hardware, design, and power system issues.
• Maintain vendor issue logs covering status, root cause, corrective action, validation, and closure.
• Review vendor release notes, firmware updates, design changes, and retrofit proposals for technical adequacy and operational risk.
• Work with inverter vendors to define corrective actions, retrofit requirements, implementation plans, validation criteria, and deployment schedules.
• Support troubleshooting of voltage, frequency, real power, and reactive power distribution issues where inverter behaviour interacts with site or grid conditions.
• Track retrofit rollouts across sites using Excel, Smartsheet, or similar tools, including affected assets, owner assignments, deployment status, validation evidence, risks, and closure criteria.
• Ensure all activities are performed in compliance with safety protocols, engineering standards, and company policies.

What You’ll Bring to the Position:

• Engineering degree in electrical, computer, or mechanical engineering with a minimum of five years of experience in renewable energy and/or battery energy storage.
• Strong knowledge of inverter operation, dispatch control, firmware/software behaviour, controls logic, and hardware design considerations.
• Power systems knowledge is preferred, including voltage control, frequency response, and real/reactive power behaviour in grid-connected systems.
• Ability to manage multiple technical issues in parallel with strong organization, attention to detail, and follow-through.
• Experience troubleshooting inverter or BESS performance issues using operational data and event logs.
• Experience managing corrective action or retrofit rollouts across multiple sites, including status tracking, schedule management, stakeholder follow-up, and closure reporting.
• Proficiency with Excel, Smartsheet, or similar tools for issue logs, retrofit trackers, deployment dashboards, and action follow-up.
• Knowledge and experience with SCADA protocols (i.e. DNP3 and Modbus).
• Familiarity with industrial communication networks (fiber optics, network switches, TCP/IP, etc.).
• Clear technical communication with vendors, site teams, engineering, and management.
• Ability to travel up to 20% of time. Travel may be on short notice.

What It’s Like to Work Here:

At e-STORAGE, you’re more than just an employee—you’re part of a team that values your ideas, your background, and your unique perspective. We believe that a culture of equity, diversity, and inclusion isn’t just the right thing to do—it’s the secret to our success. Here, you’ll find:

• Integrity: We do what’s right, always.
• Innovation: We encourage fresh thinking and bold ideas.
• Quality: We take pride in delivering excellence, every time.
• Customer Focus: We listen, we care, and we deliver.
• Sustainability: We’re passionate about protecting our planet for future generations.

Why You’ll Love Working With Us:

• Join a global leader in renewable energy, backed by over 23 years of Canadian Solar experience.
• Work on projects that matter—helping to build a cleaner, greener world.
• Thrive in a supportive, collaborative environment where your growth is our priority.
• Enjoy a competitive salary and a generous benefits package.

Your Rewards:

We offer a competitive salary, performance bonuses, and a comprehensive benefits package—including health coverage, retirement plans, paid time off, and more.

Our Commitment to Equality & Diversity:

At e-STORAGE, we know that diverse teams drive innovation and better results. We’re committed to creating a workplace where everyone feels respected, valued, and empowered—regardless of age, race, gender, ability, or background. When you join us, you’re joining a community that celebrates your uniqueness and supports your success.