Mechanical Engineer (Thermal)

Our client is seeking a highly skilled Battery Thermal Engineer to join their Battery Product Development team. This group drives innovation in next-generation battery systems—designing high-energy, high-reliability embedded battery modules across multiple product lines. In this role, you’ll be embedded with the Product Design organization from day one, shaping early-stage concepts, providing CAE-driven design guidance, and delivering sophisticated thermal and multi-physics simulations. This is a high-impact opportunity to influence the architecture and performance of industry-leading consumer hardware. Responsibilities :

• Develop state-of-the-art thermal and multi-physics FE models for cell, pack, and BMS subsystems.
• Provide design and trade-off guidance to Product Design teams through early-stage simulation.
• Build models to convert power maps into thermal outputs.
• Perform advanced thermal CAE simulations to understand boundary conditions.
• Support design evolution with cross-functional teams.
• Partner with design teams to clarify goals and CAE scope.
• Use industry-leading solvers to generate accurate simulation results.
• Collaborate with test labs to develop physical test methods and gather validation data.
• Work with system teams to develop detailed sub-models.
• Create optimized workflows and reusable templates for thermal FEA.
• Develop and implement best practices.
• Collaborate with vendors to improve CAE functionality.
• Explore new analysis types, including topology optimization. Requirements :
• PhD + 3 years industry experience required.
• Strong background in thermal simulations within Mech / Electrical Engineering.
• Experience in transient thermal simulations.
• Background in electronic heating / cooling and CFD.
• Familiarity with multi-physics coupled modeling.
• Expertise in Ansys Electronic Desktop (HFSS, IcePak).
• Experience with NX, Comsol, Cadence. Preferred Qualifications :
• Experience with OptiSlang, iSight
• Experience with Allegro and electronics layout
• Familiarity with Li-ion cells and battery packs
• Experience leading technical development roadmaps
• Project team leadership background
• Python or scripting experience Location : Cupertino, CA Duration : 1 year with the possibility of extension Salary Range : $60-$68 No 3rd party agencies or C2C