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Freelance AI Trainer & Material Scientist with Python Expertise

toloka-aiRemote — Pretoria, Gauteng, South Africa
Remote Part-time $26/hr - $26/hr

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Experience Level

Experience

Qualifications

Ideal candidates are material scientists and engineers with experience in Python, looking for part-time, non-permanent projects. Required qualifications include a degree in Material Science or related fields, proficiency in Python, and a minimum of 2 years professional experience.

About the job

Submit your CV in English and indicate your English proficiency level.

toloka-ai, in partnership with Mindrift, offers project-based assignments for subject matter experts in AI and material science. These freelance roles focus on testing, evaluating, and improving AI systems for technology clients. This is not a permanent employment contract; work is assigned per project.

Role overview

Freelance AI Trainer & Material Scientist assignments vary by project. Typical work includes:

  • Creating original materials that mirror real engineering workflows
  • Designing engineering problems that require Python programming for calculations and simulations
  • Ensuring tasks are computationally intensive, using numerical methods or iterative approaches
  • Developing challenges in system design, optimization, and analysis
  • Grounding problems in research challenges or practical engineering applications
  • Validating solutions using Python and standard engineering libraries
  • Documenting problem statements and providing thoroughly checked solutions

Preferred qualifications

  • Degree in Material Science or a related discipline
  • Proficiency in Python for numerical validation; experience with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar libraries is valued
  • Minimum 2 years of professional experience (applied, research, or teaching)
  • Understanding of practical engineering constraints and approximations
  • Excellent written English (C1 level or above)

Project process

  1. Apply
  2. Complete qualifications
  3. Join a project
  4. Fulfill assigned tasks
  5. Receive payment

Time commitment

During active project phases, expect to work approximately 10–20 hours per week. Workload may fluctuate and is not guaranteed outside these periods.

Compensation

Earn up to $26 per hour, depending on contribution and pace. Actual rates are based on project scope, complexity, and required expertise. Other projects on the platform may offer different pay structures.

About toloka-ai

Mindrift specializes in connecting technical experts with innovative project-based opportunities in AI for leading tech companies, focusing on the improvement and evaluation of AI systems.

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