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Freelance Data Science Engineer (Python & SQL) at toloka-ai | Remote

toloka-aiRemote — AustriaNew
Remote Contract $58/hr - $58/hr

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Experience Level

Mid to Senior

Qualifications

The ideal candidate will have a strong background in data science with ample experience in Python programming. We are looking for individuals who can work independently on project-based assignments and possess a deep understanding of data analysis, statistical methods, and machine learning practices.

About the job

We invite you to submit your CV in English, highlighting your proficiency in the language.

At Mindrift, we specialize in linking talented professionals with exciting, project-based opportunities in AI for prestigious tech firms. Our primary focus is on the testing, evaluation, and enhancement of AI systems. Please note that all positions are project-based and not intended as permanent employment.

Key Responsibilities:

  • Develop innovative computational data science challenges that replicate real-world analytical tasks across various sectors, including telecom, finance, government, e-commerce, and healthcare.
  • Formulate problems solvable through Python programming, utilizing libraries such as Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, and Seaborn.
  • Ensure that the tasks are computationally demanding and cannot be solved manually in a reasonable timeframe.
  • Design problems requiring complex reasoning chains in data processing, statistical analysis, feature engineering, predictive modeling, and insight extraction.
  • Create deterministic problems with reproducible outcomes, avoiding stochastic elements or mandating fixed random seeds for consistency.
  • Base challenges on actual business scenarios, including customer analytics, risk assessment, fraud detection, forecasting, optimization, and operational efficiency.
  • Construct end-to-end problems that encompass the entire data science workflow from data ingestion to deployment considerations.
  • Incorporate scenarios that necessitate scalable computational techniques for big data processing.
  • Validate solutions using Python and standard data science libraries, employing statistical methods.
  • Clearly document problem statements with realistic business contexts, providing verified correct answers.

Candidate Profile:
This opportunity is ideal for data science experts with Python experience who are open to part-time, non-permanent projects. The ideal candidates will possess:

  • 5+ years of practical data science experience with demonstrable business impact.
  • A portfolio of completed projects and publications that showcase their problem-solving capabilities.
  • Proficient Python programming skills for data science (Pandas, Numpy, Scipy, Scikit-learn, Statsmodels).
  • Expertise in statistical analysis and machine learning, with a deep understanding of algorithms and practical applications.
  • Advanced SQL skills for data manipulation and analysis.
  • Experience with GenAI technologies (LLMs, RAG, prompt engineering, vector databases).
  • Familiarity with MLOps practices and workflows for model deployment.
  • Knowledge of modern frameworks such as TensorFlow, PyTorch, and LangChain.
  • Strong written English skills (C1 or higher).

Application Process:

Apply → Pass qualification(s) → Join a project → Complete tasks → Get compensated.

About toloka-ai

Mindrift is a dynamic company focused on connecting top-tier specialists with project-oriented opportunities in the AI sector. We collaborate with leading technological firms to enhance AI systems through rigorous testing and evaluation.

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