CFD Engineer AI Training Expert

About OpenTrain

OpenTrain AI is the hiring and contracting organization for this role. OpenTrain is the #1 platform for finding and building careers in AI training and data labeling, connecting experts with projects that help shape how modern AI systems work.

Creating an OpenTrain account is free, and selected contractors can apply their professional expertise to specialized AI projects from anywhere.

• Remote contractor opportunity
• Part-time engagement with a minimum commitment of 20 hours per week
• Expected project duration of 3 to 6 months

About AI Training Work

AI training is the human side of building artificial intelligence. Experts review examples, generate high-quality responses, answer technical questions, and provide feedback that helps AI systems become more accurate and reliable.

In this project, your computational fluid dynamics knowledge will help evaluate technical reasoning and improve AI performance in engineering simulation contexts.

• Contribute to cutting-edge generative AI development
• Review and create technical text based on real subject-matter expertise
• Work remotely with flexible scheduling around your availability

The CFD Engineer Role

OpenTrain AI is seeking expert CFD Engineers to evaluate AI-generated technical responses and contribute domain expertise in computational fluid dynamics and engineering simulation. You will apply practical engineering judgment to simulation scenarios and theoretical fluid-dynamics questions.

This contractor role involves advanced CFD challenges across mesh generation, turbulence modeling, multiphase flow, heat transfer, solver configuration, and simulation validation.

• Role type: Contractor
• Experience level: Expert
• Location: Remote, worldwide
• Working language: English
• Expected availability: At least 20 hours per week

What You'll Do

You will complete text labeling, evaluation and rating, text generation, question answering, and RLHF tasks focused on computational fluid dynamics. Your work will help refine the reasoning capabilities of AI systems used for technical and engineering problems.

Clear documentation and communication are essential. You will provide written and verbal explanations that make technical feedback useful for improving AI learning and performance.

• Evaluate AI-generated technical responses for correctness, accuracy, and engineering integrity
• Solve advanced CFD problems involving mesh generation, turbulence modeling, multiphase flow, heat transfer, and solver configuration
• Analyze mesh independence, turbulence model selection, boundary-condition specification, and convergence
• Apply best practices to troubleshoot CFD simulations and theoretical fluid-dynamics questions
• Validate fluid-flow, heat-transfer, and multiphysics problems using experimental or analytical comparisons
• Document feedback and explain technical judgments clearly
• Collaborate remotely with technical experts and project participants

Required Expertise and Qualifications

You should have a bachelor’s degree or higher in Mechanical Engineering, Aerospace Engineering, Chemical Engineering, or a related field focused on fluid dynamics or thermofluids. Equivalent practical experience of at least 3 years in CFD is also accepted.

At least 3 years of hands-on experience conducting and validating CFD simulations is required. Relevant experience may include mesh generation, solver setup, turbulence modeling, multiphase or heat-transfer analysis, and post-processing.

• Deep understanding of the Navier-Stokes equations
• Knowledge of RANS, LES, and DES turbulence modeling
• Strong understanding of meshing strategies and boundary-condition specification
• Experience with CFD verification and validation practices
• Ability to cross-reference simulations with experimental or analytical data
• Familiarity with ASME V&V 20, AIAA CFD verification and validation, or ITTC procedures
• Fluent English proficiency with excellent written and verbal communication skills
• Experience with ANSYS Fluent, STAR-CCM+, OpenFOAM, COMSOL, or Converge is a strong plus

Additional Experience That Helps

Applicants with a documented history of problem authoring, technical committee service, competition leadership, or peer-recognized contributions in the CFD community are especially encouraged to apply.

• Experience with text labeling workflows
• Experience with evaluation and rating tasks
• Experience with text generation and question answering
• Computational fluid dynamics and engineering simulation subject-matter expertise
• Comfort working in English

Compensation and Project Timing

Compensation is output-based, with experts paid per task that meets project specifications. The time needed may vary according to experience and workflow, and minimum submission requirements apply. The listed compensation range is $50 to $150 USD per hour.

OpenTrain AI typically fills roles within 48 hours and is seeking experts who can begin promptly. If selected, you are expected to start your first tasks within 24 to 48 hours after completing onboarding.

• Listed pay range: $50 to $150 USD per hour
• Minimum task submission requirements apply
• Minimum weekly commitment: 20 hours
• Expected project duration: 3 to 6 months
• Expected first-task start: within 24 to 48 hours after onboarding

How to Apply Through OpenTrain

Create a free OpenTrain account and submit your application for this CFD Engineer project. Highlight your CFD simulation experience, engineering background, software familiarity, and experience communicating technical evaluations.

OpenTrain AI will review your profile and qualifications as part of the contractor selection process.

• Apply remotely from anywhere in the world
• Showcase your computational fluid dynamics expertise
• Be ready to begin quickly if selected