Technical Solutions 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 Sol Bank lithium-iron phosphate battery technology and comprehensive project services, we’re not just building products we’re powering communities and making a difference worldwide.

Position Title:

Technical Solutions Engineer Department:
Technical Solutions Compensation: $85,000 - $135,000 + annual bonus (range varies depending on location; paid in local currency)

Reports To:

Technical Solutions Manager

Location:

Remote – Canada or USA

About the Role:

The Technical Solutions Engineer will play a key role in supporting the development, evaluation, and integration of utility-scale energy storage systems (ESS) with a focus on battery technology and performance in integrated systems. This role supports both internal product development and external solution customization, ensuring seamless operation and coordination between the Battery Product, Inverters, EMS and grid interface.

This position requires deep fluency in battery cell and pack-level degradation mechanisms, the ability to translate degradation curve behavior into commercial and contractual strategy (warranties, guarantees, storage/charging requirements), and the judgment to drive design and process improvements back into the product roadmap. The ideal candidate is equally comfortable building degradation models in Excel/Python, defending assumptions in front of an Independent Engineer, and sitting across the table from R&D to push for a design change.

This role supports both internal product development and external solution customization. For internally developed solutions, the engineer will work closely with R&D, global engineering to provide direct input on design features, validation strategies, and system sizing requirements. For externally procured products, the focus will be on leading technical due diligence, ensuring standards compliance, and transferring product knowledge to internal engineering, applications, and execution teams.

Responsibilities:

Technical Due Diligence and Product Development Lead the technical review of new battery cells and sub-components being evaluated for integration into our solutions, including specs, drawings, sizing, certifications, and test results.

Work closely with procurement, product management, and R&D teams to support alignment between product design, supplier capabilities, and commercial rollout.

For internally developed products: collaborate with R&D and technical teams to support design development, interface definition, validation testing, and product roadmap alignment.

For externally sourced products: lead evaluation of technical specifications, certifications, and performance claims; ensure alignment with internal architecture and support cross-functional knowledge transfer.

Maintain traceability of vendor/product documentation, internal evaluations, and solutions status through internal tools and documentation systems.

Oversee the development and enhancement of internal engineering tools to support system modeling, product validation, and solution optimization efforts.

Support Independent Engineer (IE) reviews and customer-led technical due diligence by preparing documentation packages, addressing compliance concerns, and representing internal design rationale.

Monitor and interpret evolving product standards, test requirements, and performance expectations relevant to…