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Freelance Data Science Engineer (Python & SQL) - Remote

toloka-aiRemote — Manitoba, CanadaNew
Remote Contract CA$55/hr - CA$55/hr

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Experience Level

Mid to Senior

Qualifications

5+ years of hands-on data science experience with proven business impact. Portfolio of completed projects and publications showcasing real-world problem-solving. Expert Python programming for data science (pandas, numpy, scipy, scikit-learn, statsmodels). Expert statistical analysis and machine learning - deep understanding of algorithms, methods, and their practical applications. Expert with SQL and database operations for data manipulation and analysis. Experience with GenAI technologies (LLMs, RAG, prompt engineering, vector databases). Understanding of MLOps practices and model deployment workflows. Knowledge of modern frameworks (TensorFlow, PyTorch, LangChain). Strong written English (C1+).

About the job

Please submit your CV in English and specify your English proficiency level.

At Mindrift, we bridge the gap between talented specialists and exciting project-based AI opportunities with leading technology companies. Our focus is on the testing, evaluation, and enhancement of AI systems. Note: Participation is project-based and not a permanent employment position.

Role Overview

As a freelance Data Science Engineer, you will tackle a variety of unique projects. Your responsibilities may include:

  • Designing original computational data science challenges that replicate real-world analytical processes across various sectors such as telecommunications, finance, government, e-commerce, and healthcare.
  • Formulating problems that necessitate Python programming for resolution, utilizing libraries like Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, and Seaborn.
  • Ensuring tasks are computationally demanding, with solutions that cannot be feasibly achieved manually within a short timeframe (days/weeks).
  • Creating problems that involve complex reasoning chains in data manipulation, statistical analysis, feature engineering, predictive modeling, and deriving insights.
  • Developing deterministic problems with reproducible outcomes, minimizing stochastic elements or requiring fixed random seeds for exact results.
  • Crafting scenarios based on actual business challenges: customer analytics, risk assessment, fraud detection, forecasting, optimization, and improving operational efficiency.
  • Designing comprehensive problems that encompass the entire data science pipeline (data ingestion → cleaning → exploratory data analysis → modeling → validation → deployment considerations).
  • Addressing big data processing challenges that necessitate scalable computational strategies.
  • Validating solutions using Python and standard data science libraries along with statistical techniques.
  • Clearly documenting problem statements in a business context and providing verified correct answers.

Candidate Profile
This role is ideal for Data Science professionals with extensive experience in Python, seeking part-time, non-permanent project work. The ideal candidates should possess:

  • A minimum of 5 years of practical data science experience demonstrating measurable business impact.
  • A portfolio showcasing completed projects and publications that highlight real-world problem-solving capabilities.
  • Proficient Python programming skills for data science (including pandas, numpy, scipy, scikit-learn, and statsmodels).
  • Expertise in statistical analysis and machine learning, with a deep understanding of algorithms, methods, and their practical applications.
  • Command of SQL and database operations for effective data manipulation and analysis.
  • Familiarity with GenAI technologies, including LLMs, RAG, prompt engineering, and vector databases.
  • Insight into MLOps practices and model deployment workflows.
  • Knowledge of modern frameworks, such as TensorFlow, PyTorch, and LangChain.
  • Strong written English communication skills (C1+ level).

Application Process

Apply → Complete qualifications → Join a project → Undertake tasks → Receive payment

About toloka-ai

At Mindrift, we specialize in connecting talented specialists with innovative project-based opportunities in AI across various leading tech companies. Our mission is to enhance AI systems through rigorous testing and evaluation.

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