Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Freelance Mechanical CFD Engineer - AI Trainer

$39 per hour
Part-time

Mindrift (Toloka)

About the role 

Help train and evaluate AI agents on expert-level fluid simulation tasks. You'll take CAD geometry, set up and run simulations, build verified reference solutions, and write Python checks for the agent's results.

Requirements

  • A degree in Mechanical or Aerospace Engineering, or a related field such as energy or oil & gas. A PhD is preferred but not required.
  • Several years of hands-on industry or research CFD with OpenFOAM, ANSYS Fluent/CFX or STAR-CCM+, including meshing.
  • Solid verification and validation practice: mesh-independence studies, and validation against experiment or benchmarks.
  • Comfortable with Python and GitHub.
  • English at B2 level or above.
  • Nice to have: aerospace, automotive, offshore or turbomachinery background; multiphase or particle-laden flow experience.

Project time expectations 

For this project, tasks are estimated to require around 10–20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active. 

Compensation 

On this project, contributors can earn up to $39 per hour equivalent , depending on their level and pace of contribution.

Compensation varies across projects depending on scope, complexity, and required expertise. Please note that other projects on the platform may offer different earning levels based on their requirements.

Why this freelance opportunity might be a great fit for you? 

  • Work fully remote on your own schedule with just a laptop and stable internet connection.
  • Apply your expertise to real-world technology projects while gaining experience building high-quality solutions for a global platform.
  • Participate in performance-based bonus programs that reward high-quality work and consistent delivery.
Vacancy posted 6 hours ago
Similar jobs that could be interesting for youBased on the Freelance Mechanical CFD Engineer - AI Trainer in Remote vacancy
  • $75 per hour

     ...experience Demonstrated expertise in Software Engineering How long hiring takes Across the...  ...Engineering specialists what the leading AI labs pay for direct judgment. At $75/hr, this Mechanical Engineer & Python Expert – Freelance AI Trainer role prices in the expertise... 
    Freelance
    Hourly pay
    Contract work
    Manual labor
    Remote work

    Ethos

    Remote
    17 days ago
  •  ...listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Civil Engineering Specialist – Freelance AI Trainer Project based remotely in Canada. Help shape the next generation of AI by applying your civil engineering... 
    Freelance
    Full time
    Remote work

    Jobgether

    Remote
    1 day ago
  • $240 per day

     ...Fully remote, project-based work checking how well frontier AI does real mechanical engineering, from design and analysis to manufacturing and test. You write tasks based on your own experience and grade where the model gets it wrong. $40 to $125 USD an hour, at least 10 hours... 
    Suggested
    Full time
    Contract work
    Part time
    For contractors
    Remote work
    10 hours per week

    Sovrano AI

    Remote
    29 days ago
  •  ...behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Photoshop Specialist – Freelance AI Trainer Project based remotely in Canada. Help shape the future of AI by applying your Adobe Photoshop expertise to the training and evaluation... 
    Freelance
    Full time
    Remote work

    Jobgether

    Remote
    1 day ago
  •  ...Job Application for Voice Actor - Freelance AI Trainer Project at Meridial Back to jobs Voice Actor - Freelance AI Trainer Project Canada Are you an experienced voice actor eager to shape the future of AI? Large-scale language models and speech technologies are... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    7 days ago
  • $25 - $100 per hour

     ...Job Application for Business Owners - Freelance AI Trainer Project at Meridial Back to jobs Business Owners - Freelance AI Trainer Project...  ..., consumer-facing data representation, and local search mechanics from a merchant's perspective. We offer a pay range of $25... 
    Freelance
    Hourly pay
    Part time
    For contractors
    Local area
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  •  ...pay Required Skills CFD engineering Aerodynamics fluid-dynamics About micro1 micro1 is a data lab that helps AI labs & Enterprises train foundational models and agents...  ...Bachelor’s degree or higher in Mechanical Engineering, Aerospace Engineering, Chemical... 
    Part time
    For contractors
    Remote work

    micro1

    Remote
    24 days ago
  • $35 per hour

     ...some take longer. Within 2 weeks ~25% Within 6 weeks ~60% Within 3 months ~80% Why this role This Freelance English Writer – AI Trainer role runs entirely remote at $35/hr, so your location stops being a factor in whether you can do Writing work for an... 
    Freelance
    Hourly pay
    Contract work
    Remote work

    Ethos

    Remote
    17 days ago
  •  ...Job Application for German Speaker - Freelance AI Trainer Project at Meridial Back to jobs German Speaker - Freelance AI Trainer Project...  ...language models are evolving from clever chatbots into powerful engines of linguistic and cultural understanding. With high-quality... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  •  .... Our partner is looking for a Web Development Specialist – Freelance AI Trainer Project based in Canada. As a Web Development Specialist – AI...  ...actionable feedback to support improvements in prompt engineering, model reasoning, and evaluation metrics. - Apply practical... 
    Freelance
    Full time
    Remote work
    Flexible hours

    Jobgether

    Remote
    4 days ago
  • $100 per hour

     ...Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems.  Participation is project-based.... 
    Freelance
    Hourly pay
    Permanent employment
    Part time
    10 hours per week

    Mindrift (Toloka)

    Remote
    2 days ago
  •  ...of a partner company, who manages all applications and next steps. Our partner is looking for an Umbundu Language Specialist – Freelance AI Trainer Project based remotely in Canada. Help shape the future of artificial intelligence by bringing your Umbundu language expertise... 
    Freelance
    Hourly pay
    Full time
    Contract work
    For contractors
    Remote work

    Jobgether

    Remote
    1 day ago
  •  ...Job Application for Investment Specialist – Freelance AI Trainer Project at Meridial Back to jobs Investment Specialist – Freelance AI Trainer Project World Wide - Remote Are you knowledgeable about investments and eager to shape the future of AI? Large-scale language... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work
    Worldwide

    Invisible Technologies

    Remote
    24 days ago
  •  ...Job Application for Religion Specialist – Freelance AI Trainer Project at Meridial Back to jobs Religion Specialist – Freelance AI Trainer Project World Wide - Remote Are you knowledgeable about religion or religious studies and eager to shape the future of AI?... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  •  ...Job Application for Tutoring Specialist - Freelance AI Trainer Project at Meridial Back to jobs Tutoring Specialist - Freelance AI Trainer Project World Wide - Remote Are you an experienced instructional professional with hands-on knowledge of pedagogy, complex... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  •  ...of a partner company, who manages all applications and next steps. Our partner is looking for an Occitan Language Specialist – Freelance AI Trainer Project based in Canada. Put your Occitan language expertise to work shaping the next generation of artificial intelligence. In... 
    Freelance
    Full time
    Remote work

    Jobgether

    Remote
    4 days ago
  •  ...partner is looking for a Visual & Digital Arts Specialist – Freelance AI Trainer Project based in Canada. As a Visual & Digital Arts Specialist...  ...behind your conclusions. - Recommend improvements to prompt engineering, evaluation criteria, and assessment methods to strengthen... 
    Freelance
    Full time
    Remote work

    Jobgether

    Remote
    4 days ago
  • $60 per hour

     ...and next steps. Our partner is looking for a GPU Kernels AI Task Auditor – Freelance AI Trainer Project based remotely in Canada. Join a specialized AI...  ...train and assess AI models, ensuring they reflect realistic engineering challenges and meet rigorous standards. You will apply... 
    Freelance
    Hourly pay
    Full time
    Contract work
    For contractors
    Remote work

    Jobgether

    Remote
    1 day ago
  •  ...Job Application for Georgian Language Specialist - Freelance AI Trainer Project at Meridial Back to jobs Georgian Language Specialist -...  ...language models are evolving from simple tools into powerful engines of understanding, communication, and learning. With high-quality... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  •  ...partner company, who manages all applications and next steps. Our partner is looking for a German Audio Evaluations Specialist – Freelance AI Trainer Project based remotely in Canada. Contribute to the development of advanced AI systems by evaluating their ability to... 
    Freelance
    Hourly pay
    Full time
    For contractors
    Remote work
    Flexible hours

    Jobgether

    Remote
    1 day ago
  • $10 - $65 per hour

     ...partner company, who manages all applications and next steps. Our partner is looking for a Language Alignment & Resource Partner – Freelance AI Trainer Project based remotely in Canada. Help improve the quality, naturalness, and cultural accuracy of AI-generated content by... 
    Freelance
    Hourly pay
    Full time
    For contractors
    Remote work

    Jobgether

    Remote
    1 day ago
  • $60 per hour

     ...Job Application for Kubernetes AI Task Auditor - Freelance AI Trainer Project at Meridial Back to jobs Kubernetes AI Task Auditor - Freelance AI Trainer Project World Wide - Remote Project Overview We are sorcing experienced technical specialists in Kubernetes... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  •  ...Key Responsibilities Train AI models by annotating and labeling sound data accurately. Review and validate AI-generated sound...  ...precision and quality assurance. Provide domain expertise in sound engineering to enhance AI model efficacy. Collaborate on various AI... 
    Contract work
    Flexible hours

    Rise Data Labs

    Remote
    24 days ago
  •  ...Job Application for Insurance Specialist (Fluent in French) - Freelance AI Trainer Project at Meridial Back to jobs Insurance Specialist (...  ...models are evolving from clever chatbots into powerful engines of financial literacy, risk analysis, and claims automation.... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Immediate start
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  •  ...Job Application for Arabic (Levantine) Language Expert - Freelance AI Trainer Project at Meridial Back to jobs Arabic (Levantine) Language...  ...error traces, and suggest improvements to our prompt engineering and evaluation metrics. A Master's degree in Linguistics,... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Immediate start
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  • $22 per hour

     ...Job Application for 3D Modeling & Python Specialist - Freelance AI Trainer Project at Meridial Back to jobs 3D Modeling & Python Specialist - Freelance AI Trainer Project World Wide - Remote Project Overview We are sourcing independent 3D Modeling and Python Specialists... 
    Freelance
    Hourly pay
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  • $30 per hour

     ...## About SME Careers As AI systems become more sophisticated...  ...geometry carelessly. Engineering intent lives in the model tree...  ...of professional experience in mechanical design, product development,...  ...contract, studio, in-house, or freelance). - Genuine FreeCAD proficiency... 
    Freelance
    Hourly pay
    Full time
    Contract work
    Local area
    Remote work
    Flexible hours

    SuperAnnotate

    Remote
    21 days ago
  • $15 - $30 per hour

     ...Application for Audio Editor for Dialogue / Audio Post-Production - Freelance AI Trainer Project at Meridial Back to jobs Audio Editor for...  ...We are seeking an experienced Dialogue Editor / Audio Engineer to prepare, clean, and optimize spoken-word audio for post... 
    Freelance
    Hourly pay
    Contract work
    Part time
    For contractors
    Internship
    Remote work

    Invisible Technologies

    Remote
    24 days ago
  • $40 - $90 per hour

     ...location. We’re looking for two freelancers with strong expertise in...  ...software across different engineering contexts is preferred. Requirements...  ...expert role Supporting AI model training and evaluation...  ...— AI Training (Remote, Freelance) Rate: $40 – 90/hr Location... 
    Freelance
    Hourly pay
    Contract work
    Remote work

    Braintrust

    Remote
    8 days ago
  •  ...Job Application for Language Alignment & Resource Partner (Belarusian) - Freelance AI Trainer Project at Meridial Back to jobs Language Alignment & Resource Partner (Belarusian) - Freelance AI Trainer Project World Wide - Remote Project Overview We are sourcing... 
    Freelance
    Hourly pay
    Part time
    For contractors
    Remote work

    Invisible Technologies

    Remote
    24 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Freelance Mechanical CFD Engineer - AI Trainer. Be the first to apply!