Thermal Engineer - Battery Systems

Gotion; Illinois; On-site; USD 90,000 - 128,000; Full time

Job summary

Gotion Inc. seeks a Thermal Engineer – Battery Systems in Manteno, IL to lead engineering decisions for battery cells, modules, packs and cooling strategies, collaborating with US OEM customers and internal teams.

The role requires hands-on CFD/thermal modeling using COMSOL, ANSYS Fluent or STAR-CCM+, a Master’s in mechanical engineering, 3+ years of relevant experience, and willingness to travel. Base salary range is $90,000–$128,000 with a 15% bonus and benefits. Full-time onsite.

Qualifications

• Master’s degree in mechanical engineering or related field.
• 3+ years of experience in high voltage battery pack thermal design and simulations.
• Proficiency with CAE tools: COMSOL, ANSYS Fluent, STAR-CCM+; CATIA V6.
• Self-starter with proactive mindset, able to work in a fast-paced environment.
• Willingness to travel domestically and internationally.

Responsibilities

• Perform state-of-the-art Thermal/CFD simulations to analyze thermal performance of battery packs and components.
• Lead collaboration with US OEM customers and internal teams to drive pack designs to production.
• Coordinate with offshore teams to manage end-to-end analysis, ensuring quality and schedule alignment.
• Present technical findings, trade-offs, and actionable recommendations to leadership.
• Provide simulation-driven input to design, manufacturing, test, supply chain, and quality teams.
• Correlate simulation results with test data and update models for accuracy.
• Support DFMEA, design reviews, and DVP&R testing planning.
• Document modeling approaches and results to aid design improvements.

Skills

Thermal design

CFD analysis

Problem solving

Travel willingness

Team collaboration

Education

Master's degree in Mechanical Engineering

Tools

COMSOL

ANSYS Fluent

STAR-CCM+

CATIA V6

Job description

Gotion Inc. is based in Silicon Valley, CA, currently building a Manufacturing facility in Manteno, IL and has R&D centers in Ohio, China, Japan and Europe. We innovate in the next generation electric vehicle and energy storage technologies (lithium batteries and related systems) with the aim to accelerate electrified transportation and achieve sustainable development. Gotion is powered by a leading power battery technology company that provides solutions for vehicles including the world's first mass commercial e-bus route.

Gotion is a career destination - we are not simply attempting to just fill another job, but to pursue a dream of global green energy together! We offer outstanding opportunities to individuals seeking an exciting and challenging working environment. Everyone is highly valued and plays a vital role in the growth of our organization.

About The Team

The Product Development Team at Gotion Illinois New Energy Inc. focuses on the design and development of advanced battery products for next-generation energy storage system (ESS) and electric vehicle (EV) applications. We lead the full product development cycle, integrating mechanical, electrical, thermal, and control system to create high-performance battery solutions, along with comprehensive system integration, validation, and certification activities.

Role Summary

As a Thermal Engineer – Battery Systems at Gotion Inc, you will play a pivotal role in leading the engineering decisions for battery cells, modules, packs, cooling plates, thermal propagation mitigation strategies in collaboration with US OEM customers and our internal design/simulation teams. This position requires a deep understanding of battery pack technology and a strong background in engineering project leadership. This position requires full-time onsite presence at the Manteno, IL location.

Essential Duties and Responsibilities

• Perform state-of-the-art Thermal/CFD simulations to analyze pressure drop, thermal efficiency, thermal propagation etc. of battery packs and module components to optimize the performance of next-generation EV battery systems
• Collaborate with US OEM customers and the internal product development team to drive new pack designs from concept to mass production
• Collaborate with offshore simulation team to manage end-to-end analysis processes, maintaining technical quality, efficiency, result analysis, alignment with project objectives and ensuring compliance with performance and quality standards
• Prepare and present technical findings, design trade-offs, and recommended actions and report to the leadership team
• Work closely with Product design, manufacturing, test, supply chain, quality etc. teams to provide simulation-driven design input. Handle supplier discussions
• Correlate simulation outcomes with physical test data and update models to improve accuracy
• Support DFMEA, Design reviews, Test and Validation team to lay out the plan for the DVP&R testing
• Document CFD modeling approaches and simulation results, offering data-driven insights to assist design teams in improving thermal performance

Required Qualifications

• Master’s degree in mechanical engineering or related technical field
• At least 3+ years of experience in high voltage battery pack thermal design and simulations and supporting product development life cycle
• Proficiency using COMSOL, ANSYS Fluent, STAR-CCM+, or other CAE tools for thermal/CFD simulation. Including design tools such as CATIA V6
• Strong foundation in engineering principles and a history of applying this knowledge to solve complex problems
• Self-starter with a proactive mindset, willing to learn and adapt in a fast-paced environment
• Ability and willingness to travel domestically and internationally to support projects

The US base salary range for this full-time position is $90,000.00 - $128,000.00 + 15% bonus + benefits. Our salary ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target salaries for the position across all US locations. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your preferred location during the hiring process.

Gotion Inc. is proud to be an equal opportunity employer. We are dedicated to fostering a diverse workforce that reflects the communities we serve, cultivating a culture of inclusion and belonging, and ensuring equal employment opportunities for all.

We provide equal opportunity to all individuals regardless of race, creed, color, religion, gender, sexual orientation, gender identity or expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related conditions (including breastfeeding), parental status, criminal histories consistent with legal requirements, or any other characteristic protected by law.

At Gotion Inc., we strive to create an environment where everyone feels valued, respected, and empowered to thrive.