Title: Lead Mechanical Engineer - Static

Location: Toronto, ON – Hybrid (3+ days/week in office)

Job Type: Full-Time

Travel Requirement: Anticipated to be 10-20%

Position Type: Net New

Join the Future of Reliable Energy

Are you ready to shape the future grid? Hydrostor, a leading energy storage, technology and infrastructure company dedicated to developing utility-scale, long‑duration energy storage solutions, is seeking a Lead Mechanical Engineer - Static to join our team in Toronto. We’re supporting the development of a more resilient electricity grid and invite you to be at the forefront of this work

Why Hydrostor?

Our cutting‑edge A-CAES technology is uniquely poised to revolutionize the energy landscape. Join us as we lead the way in shaping a reliable and secure energy future.

Your Mission

As a Lead Mechanical Engineer at Hydrostor, you will serve as a technical authority for stationary mechanical equipment across our long‑duration energy storage facilities. This role provides oversight to the mechanical design, specification, and quality of mechanical balance of plant and static systems, including heat exchangers, tanks, piping, and associated stationary equipment. You will also support rotating equipment on an as‑needed basis.

You will act as the mechanical product representative for Hydrostor’s equipment portfolio, ensuring designs are robust, manufacturable, and compliant with applicable codes and standards. This role plays a critical part in safeguarding quality as Hydrostor partners with external engineering firms, vendors, and EPC/Ms, initiating and overseeing engineering quality control and assurance activities to ensure consistent execution across projects.





Your work will directly influence the performance, reliability, safety, and lifecycle cost of Hydrostor’s facilities, positioning this role as a cornerstone of our technical engineering organization.

Your Day-to-Day Adventures

- Serve as Lead Mechanical Engineer for stationery and balance of plant mechanical equipment across Hydrostor projects
- Provide technical oversight to the mechanical design and technical direction for static equipment, including heat exchangers, pressure vessels, tanks, piping systems, and associated supports
- Act as the mechanical product representative for Hydrostor’s equipment, defining standards, specifications, and technical requirements
- Develop and maintain mechanical design criteria, specifications, datasheets, drawings, and calculations for stationary equipment
- Lead mechanical inputs through the full lifecycle, from concept development and FEED through detailed design, procurement, construction, and commissioning
- Initiate and oversee engineering quality control and quality assurance activities, ensuring internal designs and externally delivered work meet Hydrostor standards
- Review and approve mechanical deliverables from external engineering partners, vendors, and EPC/Ms, providing transparent technical direction and resolution of issues
- Collaborate closely with process, civil, structural, electrical,



mining and project engineering teams to ensure seamless integration of mechanical systems
- Provide technical support during procurement, including vendor evaluations, technical bid reviews, and equipment selection
- Support construction and commissioning by addressing field issues, deviations, and design changes related to stationary equipment
- Apply systems thinking to understand how mechanical equipment interacts with the overall ACAES system and plant performance
- Serve as a subject‑matter expert (SME) for stationary mechanical systems, supporting internal teams and representing Hydrostor in technical discussions with partners and regulators
- Contribute to the continuous improvement of mechanical standards, lessons learned, and best practices across projects
- Provide rotating equipment knowledge in support of the Lead Mechanical Engineer - Rotating

Who You Are

We are seeking an experienced mechanical engineer with deep expertise in stationary equipment and balance of plant systems for industrial or energy facilities. You are a confident technical leader who enjoys owning complex mechanical scopes and acting as the final technical authority, while collaborating closely with multidisciplinary teams.

You thrive in environments where quality, rigor, and technical judgment matter, and you are comfortable reviewing and directing work performed by external partners. This role is ideal for someone who enjoys technical leadership and product ownership and who takes pride in building reliable, high‑quality engineering solutions.

What You Bring

- 12+ years of progressive mechanical engineering experience in industrial, energ

📌 Lead Mechanical Engineer (Canada)
🏢 ArcTern Ventures
📍 Canada