Senior Mechanical Engineer (Toronto)

About the Company DeepCoolAI delivers high-efficiency liquid-cooling solutions—Rear-Door Heat Exchangers (RDHx), Coolant Distribution Units (CDUs), Load Banks, and Service Carts—designed for hyperscale, HPC, and AI data centers. About the Role We are seeking a Senior Mechanical Engineer to lead the mechanical design, development, and release of DCAI’s liquid-cooling equipment. You will own major assemblies and end-to-end engineering execution—from concept and analysis through prototype, validation, manufacturing release, and field support—while mentoring junior engineers and partnering closely with Electrical, Controls, Manufacturing, Quality, Supply Chain, and Sales. Responsibilities - Technical leadership & ownership - Lead mechanical design for RDHx, CDUs, and related platforms from concept to production release. - Own subsystem architecture, requirements, design tradeoffs, and technical decision-making. - Mentor engineers and review models/drawings for quality, safety, and manufacturability. - Design, analysis, and validation - Produce robust 3D CAD, manufacturing drawings, GD&T, tolerance stacks, and BoMs. - Perform/oversee thermal and fluid calculations (heat transfer, pressure drop, airflow, pump selection), and guide test plans to validate performance. - Drive design verification testing (DVT), reliability testing, failure analysis, and corrective actions. - DFM/DFA & production readiness - Partner with manufacturing and suppliers to optimize designs for cost, lead time, and quality. - Create and maintain engineering documentation, revision control, and release packages (ECR/ECO workflows). - Support NPI builds, pilot runs, and continuous improvement initiatives. - Cross-functional collaboration - Collaborate with Electrical and Controls teams to ensure mechanical designs integrate cleanly with sensors, wiring, enclosures, and automation. - Support customer-facing technical work: reviewing specs, responding to RFIs, and contributing to proposals/quotes (as needed). - Supplier & stakeholder management - Lead supplier technical communication for fabrication, machining, sheet metal, welding, coatings, and assemblies. - Identify technical risks early and drive mitigation through FMEA and structured problem solving. Qualifications - B.Sc. in Mechanical Engineering (or equivalent). - 7+ years of relevant mechanical engineering experience (industrial equipment, thermal/fluid systems, HVAC/liquid cooling, or similar). - Strong proficiency in SolidWorks (or equivalent 3D CAD) and drawing release practices (GD&T, tolerance stack-ups, BoMs). - Demonstrated experience taking products from prototype to production (NPI, DFM/DFA, supplier builds, validation testing). - Solid fundamentals in thermodynamics, heat transfer, and fluid mechanics; comfortable with pump/coil/fan selection and pressure-drop analysis. - Excellent communication skills and ability to work cross-functionally in a fast-paced workplace. Required Skills - Experience with data center cooling, liquid-cooled racks, or high-power thermal management. - Familiarity with sheet metal, piping, weldments, and enclosure design. - Exposure to simulation tools (FEA/CFD/thermal) and test instrumentation/data analysis. - Knowledge of relevant standards (e.G., ASHRAE thermal management guidance). - P.Eng (Canada) / PE (U.S.) or eligibility in progress. Preferred Skills - Build next-generation cooling solutions for the AI/HPC era in a highly applied, product-driven environment. - High ownership, rapid iteration, and direct impact on real customer deployments. - Remote-friendly culture with strong collaboration across engineering disciplines. Apply on Kit Job: kitjob.ca/job/2o8jn6