Water Systems Chemist

Amentum Company; García; On-site; MXN 600,000 - 900,000; Full time

Job summary

Carrier Global Corporation seeks a Systems Modeling Engineer to develop and maintain performance models for water-cooled chillers. You will implement numerical methods and compute engines, applying heat transfer and thermodynamics fundamentals to support system performance predictions, collaborating with global teams.

Experience with Fortran and C# is preferred, and strong communication skills are essential for documenting methods and results across disciplines.

Qualifications

• University degree or equivalent required.

Responsibilities

• Develop and maintain HVAC system and component calculation models.
• Define model requirements and test plans.
• Verify and validate modeling results.
• Implement engineering algorithms and numerical methods to support performance prediction.
• Develop and maintain calculation software in Fortran-based and C#.
• Collaborate with Marketing, Product Development Engineering, and global teams to translate requirements into models.
• Ensure model accuracy, robustness, and maintainability through validation and continuous improvement.
• Document modeling assumptions, methods, and results for traceability.

Skills

Heat transfer

Thermodynamics

Numerical methods

Nonlinear equation systems

HVAC/R modeling

Cross-functional collaboration

Independent problem solving

Documentation and modeling

Education

University degree or equivalent

Advanced degree in related field

Tools

Fortran

C#

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.

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

• 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

• 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.

Equal Opportunity

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.