Mechanical Engineer - Thermal DesignPreferred Location : Onsite - OttawaReports to : Head of HardwareThe RoleOur systems are built for continuous operation in harsh, remote, and mission-critical environments where reliability is non-negotiable. The difference between a lab prototype and a fielded capability is often heat. Sealed, rugged electronics must reject the power they dissipate across extreme temperature swings, often with limited or no forced airflow, for the life of the mission.This role converts system requirements into thermal architectures and hardware that keep sensitive electronics within their limits and can be produced at scale and serviced in the field. You'll drive the thermal design, analysis, and validation of mission-critical electronics, from early concept and simulation through prototyping, test, and ramp to production with suppliers.What You’ll DoDesign and develop thermal management solutions, including heat sinks, heatspreaders, thermal interface materials, and conduction paths, for sealed, ruggedelectronics operating continuously in harsh, remote environments.Perform thermal analysis, simulation (e.G., CFD), and hand calculations to predictcomponent temperatures, identify hot spots,



and ensure reliable performanceacross extreme hot and cold conditions.Collaborate with electrical and systems engineers on power dissipation budgets,component placement, and material selection to optimize thermal performance atthe system level.Plan and execute thermal testing and validation, correlate models to test data, anddrive design revisions based on test and field feedback.Develop CAD models (in Solid Works) of thermal hardware, along with engineeringcalculations and design documentation that comply with engineering standards.Work closely with mechanical, manufacturing, and supply chain teams to ensurethermal solutions meet cost, weight, size, and production constraints, applyingDFM and DFA principles.Contribute to continuous improvement of thermal design standards, testprocedures, and product documentation.What You’ll BringBachelor's or Master's degree in Mechanical Engineering, Mechatronics, or a relatedfield.4–7 years of experience in thermal design and analysis for electronic systems,ideally rugged, sealed, or harsh-workplace hardware.Proficiency in Solid Works.Experience with thermal simulation and CFD tools (ANSYS Icepak or Fluent,Simcenter Flo THERM, Solid Works Flow Simulation, or similar).Strong understanding of heat

📌 Mechanical Engineer - Thermal Design (Quebec City)
🏢 Dominion Dynamics
📍 Quebec City