Systems Modeling Engineer

Carrier; Santa Catarina; On-site; BRL 180,000 - 240,000; Full time

Job summary

Carrier Global Corporation is seeking a Systems Modeling Engineer to develop and maintain performance models for water-cooled chiller systems, applying heat transfer, thermodynamics, and numerical methods.

You will implement algorithms in Fortran and C#, collaborate with global teams, ensure model accuracy, and document methods and results. This role offers exposure to cutting-edge HVAC/R technology and opportunities to influence product performance across regions.

Qualifications

• University Degree or equivalent
• 7+ years of relevant experience or an advanced degree with 5+ years in related field
• Strong fundamentals in heat transfer, thermodynamics, numerical methods
• Experience with thermal-fluid system modeling
• Hands-on programming in Fortran and C# (preferred) or similar languages
• Experience developing or maintaining engineering calculation models or simulation tools
• Experience in HVAC/R, power systems, or related equipment domain
• Demonstrated ability to lead technical efforts or define modeling/calculation approaches
• Strong written and verbal communication skills
• Ability to collaborate across global, cross-functional teams
• Ability to work independently on technical problems while contributing to team objectives

Responsibilities

• Develop and maintain HVAC system and component calculation models
• Model requirement definition
• Test plan development
• Verification and validation
• Implement engineering algorithms and numerical methods for performance prediction
• Develop and maintain calculation software in Fortran-based and C#
• Collaborate with Marketing, Product Development Engineering, and global teams
• Ensure model accuracy, robustness, and maintainability
• Document modeling assumptions, methods, and results for traceability

Skills

Heat transfer

Thermodynamics

Numerical methods

Nonlinear equations

Fortran

C#

C/C++/Java

Engineering models

HVAC/R domain

Technical leadership

Communication

Global collaboration

Independent problem solving

Education

University degree or equivalent

Tools

Fortran

C#

C/C++/Java

Job description

About Carrier

Carrier Global Corporation, global leader in intelligent climate and energy solutions, is committed to creating innovations that bring comfort, safety and sustainability to life. Through cutting‑edge advancements in climate solutions such as temperature control, air quality and transportation, we improve lives, empower critical industries and ensure the safe transport of food, life‑saving medicines and more. Since inventing modern air conditioning in 1902, we lead with purpose: enhancing the lives we live and the world we share. We continue to lead because of our world‑class, inclusive workforce that puts the customer at the center of everything we do. For more information, visit corporate.carrier.com or follow Carrier on social media at @Carrier.

About the role

The Systems Modeling Engineer will develop and maintain performance models and calculation engines for water‑cooled chiller systems. This role focuses on engineering calculations and numerical model implementation, supporting system performance calculations for water‑cooled chillers. The successful candidate will apply strong fundamentals in heat transfer, thermodynamics, and numerical methods to develop, validate, and optimize HVAC/R system models, working closely with global engineering and product teams.

Key Responsibilities

As a Systems Modeling Engineer, you'll be responsible for:

• Develop and maintain HVAC system and component calculation models, including:
• Model requirement definition
• Test plan development
• Verification and validation
• Implement engineering algorithms and numerical methods to support performance prediction and product behavior
• Develop and maintain calculation software in Fortran-based and C#)
• Collaborate with Marketing, Product Development Engineering, and global teams to translate customer and product requirements into engineering models
• Ensure model accuracy, robustness, and maintainability through validation and continuous improvement
• Document modeling assumptions, methods, and results for traceability and knowledge sharing

Requirements

We are looking for people who are skilled on leading technical efforts or define modeling / calculation approaches for complex engineering systems. If this is you, get in touch.

• University Degree or equivalent
• A minimum of 7 years prior relevant experience or an advanced degree in a related field and a minimum of 5 years' experience.
• Strong fundamentals in:
• Heat transfer
• Thermodynamics
• Numerical methods
• Nonlinear equation systems
• Experience with thermal-fluid system modeling
• Hands‑on programming experience in Fortran and C# (preferred) or similar numerical languages (C/C++, Java)
• Experience developing or maintaining engineering calculation models or simulation tools
• Experience in HVAC/R, power systems, or related equipment domain
• Demonstrated ability to lead technical efforts or define modeling / calculation approaches for complex engineering systems
• Strong written and verbal communication skills
• Ability to collaborate across global, cross‑functional teams
• Ability to work independently on technical problems while contributing to team objectives

Although not necessary, it would be nice if you have:

• Experience maintaining legacy engineering calculation codebases
• Experience developing multi‑language solutions across modeling and software systems
• Familiarity with optimization techniques or product configuration tools
• Experience mentoring or guiding junior engineers

Benefits

We offer a competitive total rewards package that may include other benefits and well‑being programs. Offerings vary by role and location and are designed to support employees' health, security, and success.

If you require a reasonable accommodation to complete the application process, participate in an interview, or otherwise engage in the hiring process, please contact us at We will make every effort to meet your needs in accordance with applicable laws.

Carrier is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.