AI Trainer - Mechanical Engineers - CAD Expertise - (Remote Advisory - Spain)

Prolific; Madrid; Remote; EUR 122,000 - 174,000; Full time

Job summary

Prolific is seeking Mechanical Engineers to join its expert CAD and AI research network for remote advisory work. You will help capture engineering design approaches and validation workflows to train AI models, with tasks that include 3D CAD design and Python script validation.

Candidates should have a mechanical engineering degree, CAD software experience, and strong problem‑solving skills. Remote work and flexible hours are offered.

Qualifications

• Bachelor's degree or higher in Mechanical Engineering or a closely related field.
• Strong proficiency with open‑source CAD software (e.g., FreeCAD, KiCad, or similar).
• Python development experience with ability to write and execute scripts.
• Experience writing validation scripts (not just using pre‑built tools).
• Comfortable working from the command line.
• Comfortable using Linux and/or Windows environments.
• Strong analytical and problem‑solving skills with excellent attention to detail.
• Reliable internet connection and access to a computer.

Responsibilities

• Paid vetting survey (Prescreener): compensation at $12/hour.
• Design physical objects suitable for 3D printing using open‑source CAD software.
• Complete engineering design tasks with workflow captured to train AI models.
• Write and execute Python validation scripts to support design workflow.
• Handle tasks across Simple, Moderate and Complex levels (4h, 4–24h, 24–40h).

Skills

CAD software proficiency

Python scripting

Validation scripting

Command line proficiency

Linux/Windows environments

Analytical mindset

Attention to detail

Education

Bachelor's degree or higher in Mechanical Engineering or related field

Job description

AI Trainer – Mechanical Engineers - CAD Expertise (Remote Advisory)

About Prolific

Prolific is not just another player in the AI space – we are building the biggest pool of quality human data in the world. Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from paid study participants with a wide variety of experiences, knowledge, and skills.

The role

We are seeking Mechanical Engineers to join our expert B2B and AI research network. This project supports the development of next‑generation AI models by capturing how experienced engineers approach real‑world CAD design challenges and validation workflows. Please note: This is an invitation to join our expert talent pool. Participation in individual projects is not guaranteed and will depend on client demand and profile fit. Researchers for this project typically pay up to $120/hour for the main study. Participants must first complete a paid vetting survey and a screening call before being invited to the study.

What you’ll bring

• Bachelor's degree or higher in Mechanical Engineering or a closely related field
• Strong proficiency with open‑source CAD software (e.g., FreeCAD, KiCad, or similar)
• Python development experience with the ability to write and execute scripts independently (Desirable but not mandatory)
• Experience writing validation scripts (not just using pre‑built tools) (Desirable but not mandatory)
• Comfortable working from the command line (Desirable but not mandatory)
• Comfortable using Linux and/or Windows environments
• Strong analytical and problem‑solving skills with excellent attention to detail
• A reliable internet connection and access to a computer

What you’ll be doing in the role

• Paid vetting survey (Prescreener): Approximately 10 minutes, compensated at $12/hour
• Design physical objects suitable for 3D printing using open‑source CAD software.
• Complete engineering design tasks while your workflow, including tool usage, clicks, and design decisions, is captured to help train AI models on engineering problem‑solving.
• Write and execute Python validation scripts to support your design workflow.
• Complete tasks across multiple complexity levels:
  • Simple: Approximately 4 hours
  • Moderate: Approximately 4–24 hours
  • Complex: Approximately 24–40 hours

Why Prolific is a great platform to join as a Participant

Joining our platform as a Prolific participant will give you the chance to influence the AI models of the future using professional legal expertise. Once you pass our assessment, you can join Prolific in just 15 minutes, and start enjoying competitive pay rates, flexible hours, and the ability to work from home. We’ve built a unique platform that connects researchers and companies with a global pool of participants, enabling the collection of high‑quality, ethically sourced human behavioural data and feedback. This data is the cornerstone of developing more accurate, nuanced, and aligned AI systems. We believe that the next leap in AI capabilities won’t come solely from scaling existing models, but from integrating diverse human perspectives and behaviours into AI development. By providing this crucial human data infrastructure, Prolific is positioning itself at the forefront of the next wave of AI innovation – one that reflects the breadth and the best of humanity.

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