Thermal Systems Engineer

Insight Global; Long Beach (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

Insight Global is seeking a Thermal Systems Engineer to own the end-to-end architecture of automotive thermal systems in a fast-paced development environment.

You will decompose vehicle requirements into subsystem interfaces, integrate subsystem models, and perform data-driven trade studies to guide design decisions. Collaboration with coolant, climate, and test teams is essential for success.

Qualifications

• Bachelors degree in mechanical/thermal engineering or equivalent experience required.
• 5+ years in thermal systems engineering, integration, or component development.
• Hands-on in coolant, refrigeration, climate control systems.
• Strong thermodynamics, heat transfer, and fluid dynamics foundations.
• Experience with system modeling tools (Matlab/Simulink, GT-SUITE) and Python.

Responsibilities

• Define and maintain end-to-end thermal system architecture and interfaces.
• Decompose vehicle-level requirements into subsystem requirements and traceability.
• Integrate subsystem models into a unified system-level thermal model and analyze energy flow.
• Lead cross-functional issue resolution and drive corrective actions to closure.
• Collaborate with test engineers to define validation plans and correlate models to data.

Skills

Thermal systems engineering

Cross-functional coordination

System modeling and analysis

Python programming

MATLAB/Simulink

Education

Bachelor's degree in Mechanical Engineering, Thermal Sciences, Fluid Sciences, or related field

Master's degree or Ph.D. in Mechanical Engineering or related discipline

Tools

MATLAB/Simulink

GT-SUITE

CATIA

NX

3DEXPERIENCE

Job description

Job Description

Execute and maintain the end-to-end thermal system architecture, ensuring system block diagrams, interfaces, and requirements remain aligned as the design evolves.Partner with coolant, refrigeration, and climate subsystem owners to decompose vehicle-level requirements into traceable subsystem and interface requirements.Integrate subsystem models into a unified system-level thermal model and analyze energy flow, dynamic behavior, and operating-mode transitions across the vehicle.Perform system-level trade studies and deliver data-driven recommendations to support architecture and design decisions.Ensure component specifications, model assumptions, and subsystem interfaces align across thermal domains and integrate seamlessly into the overall system.Lead resolution of cross-functional thermal system issues by identifying root causes, coordinating with subsystem owners, and driving corrective actions to closure.Collaborate with test engineers to define validation plans, correlate simulation models to physical test data, and reduce technical risk.Support design reviews, requirements reviews, and technical presentations by developing integrated analyses, performance data, and decision-ready options.Work closely with design and controls engineering teams to ensure thermal systems package correctly and support control strategy and algorithm development.

Skills and Requirements

Bachelor's degree in Mechanical Engineering, Thermal Sciences, Fluid Sciences, or a related engineering discipline, or equivalent practical experience.5+ years of experience in thermal systems engineering, integration, or component development.Hands-on experience with multiple thermal domains, including coolant, refrigeration, and/or climate control systems.Strong foundation in thermodynamics, heat transfer, and fluid dynamics across both liquid cooling and vapor-compression systems.Experience using system modeling and simulation tools such as MATLAB/Simulink, GT-SUITE, or similar platforms.Proficiency in Python or comparable programming languages for model development and analysis.Proven ability to coordinate cross-functional engineering teams and manage multiple technical workstreams simultaneously.Master's degree or Ph.D. in Mechanical Engineering or a related engineering discipline.Experience with EV thermal management systems, including battery, powertrain, cabin thermal management, and heat-pump architectures.Familiarity with automotive communication protocols such as CAN, LIN, and Automotive Ethernet.Working knowledge of 3D CAD tools (CATIA, NX, or 3DEXPERIENCE) to evaluate system packaging and hardware topology.Experience operating in fast-paced vehicle development environments with close collaboration between hardware, controls, software, and validation teams.Strong systems-thinking mindset with the ability to balance architecture, performance, integration, and implementation trade-offs.

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal employment opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment without regard to race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or the recruiting process, please send a request to [e-mail].