Project Engineer

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Who We Are

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.

With our innovative SolBank lithium-iron phosphate battery technology and comprehensive project services, we’re not just building products we’re powering communities and making a difference worldwide.

Canadian Solar was founded in 2001 in Canada and has been listed on NASDAQ since 2006. It is now one of the world's largest solar technology and renewable energy companies. Canadian Solar is a leading manufacturer of solar photovoltaic modules, provider of solar energy and battery storage solutions, and developer of utility-scale solar power and battery storage projects with a geographically diversified pipeline in various stages of development. Over the past 22 years, Canadian Solar has successfully delivered over 102 GW of premium-quality, solar photovoltaic modules to customers across the world. Likewise, since entering the project development business in 2010, Canadian Solar has developed, built, and connected over 9 GWp of solar power projects and over 3 GWh of battery storage projects across the world. Currently, the Company has approximately 700 MWp of solar power projects in operation, 8 GWp of projects under construction or in backlog (late-stage), and an additional 17 GWp of projects in advanced and early-stage pipeline. In addition, the Company has a total battery storage project development pipeline of 52 GWh, including approximately 2 GWh under construction or in backlog, and an additional 50 GWh at advanced and early-stage development. Canadian Solar is one of the most bankable companies in the solar and renewable energy industry.

For additional information about Canadian Solar, visit

Position Title: Project Engineer

Department: Engineering

Entity: e-STORAGE

Location: Japan

Position Summary

The Project Engineer is a key member of a cross-functional team responsible for delivering battery energy storage projects in Japan using advanced, market-leading technologies. This role leads all engineering activities for two to three projects, from initial design through commissioning, to ensure safe, timely, and successful execution. The Project Engineer is expected to spend more than 50% of their time at project sites.

Key Responsibilities

· Support the development of technical specifications, vendor evaluations, and supplier qualification processes, including testing and commissioning requirements for energy storage projects.

· Assist procurement activities by coordinating supplier data collection, preparing technical requirement documentation, and maintaining supplier Q&A records.

· Manage engineering consultants or EPC contractors conducting grid interconnection studies in compliance with Japanese utility requirements, relevant regulatory authorities, and applicable grid codes.

· Evaluate technical components of EPC proposals related to energy storage systems during the contractor selection process.

· Review project documentation and preliminary designs to identify scope gaps and responsibility overlaps, ensuring overall project success through a strong understanding of engineering, construction, and permitting principles.

· Lead technical project execution by managing scope, schedules, and stakeholder coordination to maintain alignment across all parties.

· Collaborate closely with internal teams (project management, product engineering, sales) and external stakeholders (utilities, authorities having jurisdiction, contractors, and end customers) to ensure consistent and effective communication.

· Oversee engineering consultants and facilitate weekly coordination and design review meetings.

· Review and coordinate technical designs and documentation from suppliers and contractors.

· Manage the design review process and ensure timely resolution of all technical comments.

· Conduct site inspections and resolve technical issues during installation and commissioning phases.

· Recommend product or process improvements based on project experience and lessons learned.

Additional Responsibilities

· Build and maintain strategic relationships with key vendors, suppliers, and contractors within the energy storage industry in Japan.

· Contribute to value engineering initiatives and continuous process improvement by sharing project-specific insights.

Qualifications and Experience

· Bachelor’s degree in Engineering or equivalent practical experience.

· 5–10 years of relevant experience in project or systems engineering within energy storage integrators or EPC organizations.

· Hands-on experience with battery energy storage systems, medium-voltage substations, or related technologies.

· Strong expertise in developing technical specifications, performing bid evaluations, and procuring major electrical equipment such as inverters, transformers, and switchgear.

· Solid knowledge of commissioning and testing procedures for energy storage projects.

· Proficiency in construction project management processes, including submittals, RFIs, change orders, non-conformance reports, and as-built documentation.

· Advanced technical knowledge of medium-voltage electrical installations, ampacity calculations, short-circuit and load-flow studies, protective device coordination, arc-flash analysis, and grounding design in accordance with international standards (e.g., IEEE).

· Working knowledge of Japanese grid regulations and utility interconnection requirements.

· Experience coordinating with local utilities and regulatory authorities.

· International mindset with experience working in multicultural, multinational environments.

· Results-driven professional with a proactive, goal-oriented approach and strong accountability

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.

Want to join here is what we are looking For

• The right mix of education, experience, and skills for the role.

• Great communication, teamwork, and problem-solving abilities.

• A true commitment to safety, ethics, and sustainability.

Your Rewards

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

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