Internal Tools Developer Jobs in Hamilton, ON (NOW HIRING)

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.

Division: e-STORAGE

Reports To: Technical Solutions Manager - Inverter Technology

Location: Kitchener: Canada

Position Summary

The Technical Solution Engineer - Inverter Products supports the design, evaluation, and integration of utilityscale energy storage systems (ESS) with a strong focus on Power Conversion Systems (PCS). This role requires a systemlevel understanding of power electronics, safety, and multiproduct integration across inverters, EMS, batteries, and grid interfaces. The engineer contributes to internal product development, external vendor assessments, validation efforts, and coordination with global engineering teams to ensure technical consistency and alignment.

Key Responsibilities

Technical Due Diligence & Product Development Support

• Lead indepth technical due diligence for inverter products, evaluating performance, reliability, safety, and compliance.
• Support both internal product development and externally sourced product review processes.
• Review and validate technical specifications, certifications, vendor data, and control features.
• Develop internal tools for sizing, system modeling, and design validation.
• Participate in product roadmap discussions, providing engineering input on features, testing needs, integration and certification requirements.
• Support Independent Engineer (IE) reviews, preparing technical packages and addressing compliance questions.
• Maintain awareness of applicable UL, IEEE, IEC, and regional codes and ensure product documentation aligns with evolving standards.

Solution Development & Supply Chain Support

• Support selection of new inverter products by assessing compatibility with system architecture and solution platforms including review product drawings, models, test results, and sizing tools.
• Maintain documentation traceability, vendor evaluation records, and internal decision logs.
• Collaborate with procurement, product management, and R&D to align supplier capabilities with internal requirements and commercial timelines.
• Provide technical support for product onboarding, including knowledge transfer sessions to engineering, execution, and applications teams.

CrossFunctional Engineering Support

• Provide engineering guidance for projectspecific requirements and customerdriven customizations.
• Contribute to development of reference documents, templates, and standardized internal workflows.
• Work with global engineering teams to align on inverter feature updates, controls enhancements, and integration readiness.
• Perform additional duties as required to support engineering operations.

Qualifications

• Bachelor's degree in Electrical Engineering, Power Systems, or related discipline; advanced degree preferred.
• 5+ years of experience in power converter, inverter development or ESS.
• Strong technical foundation in power electronics, inverterbased resources and certification process.
• Knowledge of BESS applications and handson experience with testing, validation, or system modeling.
• Familiarity with relevant certifications and standards such as UL 1741/SA, UL 9540, IEEE 1547, IEC 62109, IEC 61850.
• Experience working with global engineering or manufacturing teams across multiple time zones.
• Demonstrated ability to build internal tools, automate processes, or develop engineering workflows.
• Strong analytical, documentation, and communication skills. Mandarin proficiency is beneficial but not required.

Key Competencies

• Deep competency in inverter technologies and power electronics.
• Strong communication ability across internal teams and with customer engineering groups.
• Excellent organizational skills and the ability to manage multiple technical streams.
• Experience in vendor evaluation, technical documentation review, and product qualification.
• Ability to collaborate across global time zones and adapt to dynamic project needs.
• Ability to travel up to 15% for vendor assessments, validation testing, and technical workshops.

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.

• 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.

• 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.

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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