At Canadian Solar, our vision is to make lives better by bringing electricity powered by the sun to millions of people worldwide. As a leading manufacturer of solar panels, inverters, and energy storage solutions, we've been an industry front-runner since our founding in 2001. Our commitment to sustainability is reflected in all parts of our organization as we navigate the complexities of a booming industry.

Throughout Canadian Solar's subsidiaries, e-Storage, Recurrent Energy, MSS and CSI Solar Co., we invest in our employees' growth. Our training programs and promotional opportunities ensure we all can continue to learn. We understand the importance of work-life balance and provide various flexible work options to support our employees' well-being. Join our team to "Make the Difference" by creating a lasting positive impact on the world and the communities where we operate.

Position Title: Commissioning Engineer

Department: Engineering

Entity: e-STORAGE

Reports To: Commissioning Manager

Location: Ontario, Canada

About Us: e-STORAGE is a subsidiary of Canadian Solar and a leading company specializing in the design, manufacturing, and integration of battery energy storage systems for utility-scale applications. The Company offers its own proprietary LFP battery solution, comprehensive EPC services, and innovative solutions aimed at improving grid operations, integrating clean energy, and contributing to a sustainable future. e-STORAGE has successfully implemented over 3.3 GWh DC of battery energy storage solutions in various locations, including the United States, Canada, the United Kingdom, and China. This significant accomplishment solidifies e-STORAGE's position as a key player in the global energy storage integration industry. Currently, the Company operates two fully automated, state-of-the-art manufacturing facilities with an annual production capacity of approaching 20 GWh. e-STORAGE is fully equipped to continue providing high-quality, scalable energy storage solutions and contribute to the widespread adoption of clean energy.

About the Role: The Commissioning Engineer is part of a cross-functional team that focuses on executing battery storage

projects with market-leading technologies. The Commissioning Engineer is responsible for testing and

commissioning oversight activities of Battery Energy System Storage (BESS) projects from the PreCommissioning phase through to Substantial Completion to ensure successful execution and operation of the BESS project. The Commissioning Engineer is expected to spend over 75% of their time at the project site.

Responsibilities:

• Align commissioning scope, goals, and schedule with owners, O&M, design, and construction.
• Build commissioning plans, checklists, and functional test documentation to standards
• Review drawings/documents to flag scope gaps and clarify responsibilities early
• Execute on-site commissioning and keep scope, schedule, and stakeholders aligned
• Coordinate communication across internal teams and external parties (utilities, AHJs, contractors)
• Lead daily Plan of the Day (POD) meetings with equipment suppliers
• Review FAT procedures and reports to confirm equipment readiness
• Run site walkdowns to align plans, schedules, and commissioning checklists
• Troubleshoot installation/commissioning issues and drive resolution to closure
• Capture lessons learned, improve processes, and support O&M training/hand-off

Required Qualifications and Skills:

• Bachelor's degree in Electrical Engineering or equivalent combination of education and practical experience
• 5 years of experience in commissioning and/or systems engineering within an energy storage integrator and/or EPC environment
• Direct experience with BESS commissioning/testing or related electrical systems (e.g., MV stations/substations, inverters, transformers, switchgear)
• Strong capability in equipment specifications, technical bid evaluations, and procurement support for major electrical equipment
• Working knowledge of construction/project execution controls (RFIs, submittals, NCRs, change orders, as-builts) and field coordination
• Technical proficiency in MV electrical design/analysis concepts (ampacity, short circuit/load flow, protection coordination, arc flash, grounding/IEEE 80)
• Solid understanding of applicable codes/standards and compliance (NEC, UL), with strong communication, prioritization, and stakeholder management skills

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.

Compensation & Benefits: Canadian Solar offers a competitive salary plus fully comprehensive benefits and performance bonus package based on an annual objective achievement.

Canadian Solar Inc. is an Equal Opportunity Employer (EOE). Qualified applicants are considered for employment without regard to age, race, color, religion, sex, national origin, sexual orientation, disability, or veteran status.