Global Technical Specialist--3D Airflow & Combustion

CompanyGeneral Motors
LocationPontiac, Michigan, United States of America, Warren, Michigan, United States of America
Category-
Seniority-
Workplace-
Posted2026-08-22
Viaworkday

Description

Job Description

Work Arrangement:   This role is categorized as   hybrid . This means the successful candidate is expected to report to the office three times per week, at   minimum .

The Role

General Motors is   seeking   a highly skilled and motivated   Engine Combustion & Airflow Technical Specialist   to join our Engine Performance and Calibration team. This role is critical in shaping the future of internal combustion engine (ICE) technology through high-fidelity computational fluid dynamics (CFD) simulations. The ideal candidate will have deep   expertise   in   engine airflow,   gas exchange,   combustion modeling, fuel injection   spray ,   exhaust   systems   and emissions control, and will contribute to the design and optimization of next-generation gasoline and   diesel   combustion systems and airpaths.

What You'll Do

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Lead the technical   method   development and roadmap for   fuel spray,   in-cylinder mixture preparation ,   combustion analysis , exhaust and aftertreatment systems,   manifolds   and boosting systems.

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Own scorecards for critical hardware release metrics for combustion, airflow, exhaust systems, aftertreatment, and exhaust sensors

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Design and   optimize   combustion chamber geometries for improved efficiency, power output, and emissions performance.

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Simulate and interpret combustion processes, heat transfer, cold start behavior, and catalyst heating strategies.

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Provide component-level and/or system-level design recommendations to   Hardware & Calibration Technical Specialists   based on interpretation of analysis results

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Own and e nhance current standard analysis practices and/or tools to improve prediction fidelity and/or execution speed

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Lead, execute, and coordinate analysis capability development initiatives, with emphasis on an “all virtual” future

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Drive testing to   support the development of first-time capable analysis techniques

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Stays abreast of   new technology   and competitive products

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Lead   cross-functional teams including engine design, calibration, controls, and emissions compliance.

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Interface with software vendors to convey future needs and impart change

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Work with leadership,   development   partners, and PMT Technical Specialists to  identify  gaps and priorities for analysis growth

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Seek out  state of the art  tools and methods and  maintain  a benchmark of industry capability and trends

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Lead analysis support for code red and urgent product issue resolution

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Interface with other virtual groups to  establish  common processes

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Communicate status to leadership and escalate issues/roadblocks within the organization, as necessary

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Represent GM for external collaborations and conferences

Your Skills & Abilities (Required Qualifications)

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10 +   years’ experience   with compressible CFD analysis of powertrain-related systems

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MS   in Mechanical Engineering, Aerospace   Engineering   or a related field with a focus on internal combustion engines or fluid dynamics

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7 +   years’ experience   in CFD software (CONVERGE, STAR-CD, STAR-CCM+ or similar) for gasoline or diesel mixture preparation / combustion simulation

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Highly proficient with   ProStar , ICEM,   Hypermesh ,   Tgrid , or equivalent CFD meshing software

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Highly proficient with Converge, Siemens CCM+ In-Cylinder Solution,   StarCD , AVL Fire, or equivalent CFD software

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Highly proficient with   Ensight ,   ProStar   or equivalent CFD post-processing software

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Proficient in programming (Java, MATLAB, Python), workflow automation, and customization of tools surrounding main vendor software

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Strong understand ing   of engine combustion testing , data   acquisition   and analysis

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Demonstrated experience   leveraging   machine learning,   advanced statistical methods,   model - based   calibration   and /or multi-disciplinary CAE optimization

What Will Give You   A   Competitive Edge (Preferred Qualifications)

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PhD in Mechanical Engineering   or related fields

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Proficient in application of machine learning, data driven modeling techniques in context of engine simulations

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Proficient with GT-Power, WAVE, AVL Boost, or equivalent 1D engine simulation software

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Experience with hands-on   engine testing, data   acquisition   and calibration tools (AVL Concerto,   Indicom , ETAS)

This job may be eligible for relocation benefits

#LI-LG2

GM does not provide immigration-related sponsorship for this role. Do not apply for this role if you will need GM immigration sponsorship now or in the future. This includes direct company sponsorship, entry of GM as the immigration employer of record on a government form, and any work authorization requiring a written submission or other immigration support from the company (e.g., H1-B, OPT, STEM OPT, CPT, TN, J-1, etc).

This role is categorized as hybrid. This means the selected candidate is expected to report to a specific location at least 3 times a week {or other frequency dictated by their manager}.

About GM

Our vision is a world with Zero Crashes, Zero Emissions and Zero Congestion and we embrace the responsibility to lead the change that will make our world better, safer and more equitable for all.

Why Join Us

We believe we all must make a choice every day – individually and collectively – to drive meaningful change through our words, our deeds and our culture. Every day, we want every employee to feel they belong to one General Motors team.

Benefits Overview

From day one, we're looking out for your well-being–at work and at home–so you can focus on realizing your ambitions. Learn how GM supports a rewarding career that rewards you personally by visiting Total Rewards resources .

Non-Discrimination and Equal Employment Opportunities (U.S.)

General Motors is committed to being a workplace that is not only free of unlawful discrimination, but one that genuinely fosters inclusion and belonging. We strongly believe that providing an inclusive workplace creates an environment in which our employees can thrive and develop better products for our customers.

All employment decisions are made on a non-discriminatory basis without regard to sex, race, color, national origin, citizenship status, religion, age, disability, pregnancy or maternity status, sexual orientation, gender identity, status as a veteran or protected veteran, or any other similarly protected status in accordance with federal, state and local laws.

We encourage interested candidates to review the key responsibilities and qualifications for each role and apply for any positions that match their skills and capabilities. Applicants in the recruitment process may be required, where applicable, to successfully complete a role-related assessment(s) and/or a pre-employment screening prior to beginning employment. To learn more, visit How we Hire .

Accommodations

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