Battery Thermal Modeling Engineer

Wise Skulls LLC; Cupertino (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Wise Skulls LLC in Cupertino, California, seeks an experienced Battery Thermal Modeling Engineer to develop state-of-the-art thermal, CFD, and multiphysics models for battery cells, packs, BMS subsystems, and product-level assemblies.

The engineer will work with Battery Module, Product Design, Battery Modeling, Cell Engineering, system, test, and reliability teams from early design stages to assess thermal impact and guide design trade-offs.

Qualifications

• Requires MS with 8+ years or PhD with 5+ years of relevant industry experience.
• Strong foundation in thermal/CFD engineering simulations.
• Expert-level AEDT experience (Icepak/HFSS/SIwave).
• Experience with transient simulations of MCAD/ECAD-based assemblies.
• Familiarity with lithium-ion batteries used in consumer electronics.
• Experience in electronic heating/cooling and CFD.
• Familiarity with multi-physics modeling (mechanical/thermal/electrochemical).
• Experience leading technical roadmaps and coordinating cross-functional work.

Responsibilities

• Develop state-of-the-art thermal, CFD, and multiphysics models for battery cells, packs, BMS subsystems, and assemblies.
• Provide design guidance for fast charging, high-power features, and thermal mitigation concepts.
• Convert electrical power maps into temperature and thermal outputs.
• Run transient thermal/CAE simulations at various system levels.
• Create robust, reusable simulation models and workflows.
• Collaborate with test and reliability labs to obtain data and validate results.
• Develop detailed thermal sub-models for assembly- and product-level simulations.
• Develop Python automation and templates for recurring analyses.
• Work with CAE vendors to address modeling needs.
• Explore AI/ML, surrogate models, and digital-twin methods.

Skills

Thermal/CFD simulations

AEDT: Icepak/HFSS/SIwave

Transient thermal simulations

Multi-physics coupling (mechanical/fer

Education

MS or PhD with relevant experience

Tools

Ansys AEDT (Icepak)

Ansys HFSS

Ansys SIwave

Job description

Hiring: Battery Thermal Modeling Engineer

Important

Visa: USC and GC

About the Role

General Summary

We are seeking an experienced Battery Thermal Modeling Engineer to develop state-of-the-art thermal, CFD, and multiphysics models for battery cells, packs, BMS subsystems, and product-level assemblies. The engineer will work closely with Battery Module, Product Design, Battery Modeling, Cell Engineering, system, test, and reliability teams from early design stages to assess thermal impact, guide design trade-offs, and improve product thermal performance through simulation-driven design changes and mitigations.

Function : Battery Thermal Modeling / CFD & Multiphysics

Principal Duties and Responsibilities

• Develop state-of-the-art thermal, CFD, and multiphysics finite-element models for battery cells, packs, BMS subsystems, and system-level assemblies.
• Provide early-stage design and trade-off guidance for fast charging, high-power functions, product features, and thermal mitigation concepts.
• Develop models and capabilities to convert electrical power maps into temperature, heat-flow, and thermal-performance outputs.
• Perform advanced transient thermal/CAE simulations to evaluate boundary conditions at cell, pack, BMS subsystem, battery-pack surroundings, and product-system levels.
• Use best-in‑class solvers and modeling practices to build accurate, robust, and reusable simulation models.
• Work with test and reliability laboratories to define physical test methods, obtain required material and boundary‑condition data, and validate simulation results.
• Collaborate with system teams to develop detailed thermal sub-models for assembly-level and product-level simulations.
• Develop optimized workflows, Python automation, and reusable templates for recurring thermal and CFD analyses.
• Work with CAE vendors to drive functionality improvements that address the group's modeling and simulation needs.
• Explore new technologies, including AI/ML, surrogate modeling, and digital-twin methods for physics‑based simulation.
• Contribute to simulation-driven design workflows, technical roadmaps, design reviews, and cross-functional engineering decisions.

Knowledge, Skills, and Ability

Required

• MS with 8+ years, or PhD with 5+ years, of relevant industry experience.
• Mechanical or electrical engineering background with strong foundation in thermal/CFD engineering simulations.
• Expert-level hands-on experience with Ansys Electronics Desktop (AEDT), particularly Icepak, HFSS and SIwave.
• Experience in transient thermal simulations of assemblies built using MCAD/ECAD inputs
• Familiarity with lithium-ion batteries used in consumer-electronics products.
• Experience in electronic heating and cooling and CFD
• Familiarity with multi-physics coupled modeling, integrating mechanical, thermal and electrochemical behaviors.
• Experience defining and leading a technical development roadmap.
• Experience managing engineering teams and coordinating cross-functional technical work.
• Familiarity with batteries in consumer electronics

Working Conditions

This position is onsite in Cupertino, California, and requires close collaboration with battery, product design, electrical, mechanical, system, test, reliability, and CAE teams. Remote work is not allowed.