Data Scientist (Python & SQL) - Freelance AI Trainer

Mindrift

Job Overview

Location

Remote

Salary

USD 55 hourly

Employment Type

Freelance

Work Arrangement

Remote

Sector

Information Technology & Software

Experience Level

Senior (5-8 years)

Application Deadline

May 2, 2026

About the Company

Mindrift is a dynamic platform that connects highly skilled specialists with project-based opportunities in the rapidly evolving field of Artificial Intelligence. We partner with leading tech companies to offer engaging work focused on the critical tasks of testing, evaluating, and improving AI systems. Our projects are designed for professionals seeking flexible, part-time engagements that leverage their expertise in areas such as data science, machine learning, and AI development. Mindrift facilitates these collaborations, ensuring that specialists can contribute to cutting-edge AI advancements while managing their own schedules. Participation is project-based, offering a unique pathway for experts to engage with innovative AI challenges without committing to permanent employment.

Job Description

Mindrift is seeking experienced Data Scientists to contribute to cutting-edge AI projects. This freelance role involves designing and solving complex computational problems that simulate real-world analytical workflows across various industries.

You will create challenging tasks requiring advanced Python programming with libraries like Pandas, NumPy, and Scikit-learn, alongside robust SQL skills for data manipulation. The problems you design will necessitate non-trivial reasoning in data processing, statistical analysis, feature engineering, and predictive modeling.

Key responsibilities include developing end-to-end data science pipeline problems, incorporating big data scenarios, and ensuring deterministic, reproducible solutions. You will also verify solutions using Python and document problem statements clearly with realistic business contexts.

This opportunity is ideal for data science specialists with a strong background in Python and a passion for AI development. If you are looking for project-based work that leverages your expertise and offers significant impact, we encourage you to apply.

To apply for this role, click the Apply button on this page and follow the instructions.

Required Skills

PythonSQLData ScienceMachine LearningStatistical AnalysisPandasNumPyScikit-learnGenAILLMsRAGPrompt EngineeringVector DatabasesMLOpsTensorFlowPyTorchLangChain

Key Responsibilities

Design original computational data science problems simulating real-world analytical workflows across industries (telecom, finance, government, e-commerce, healthcare)
Create problems requiring Python programming (using Pandas, Numpy, Scipy, Sklearn, Statsmodels, Matplotlib, Seaborn)
Ensure problems are computationally intensive and cannot be solved manually within reasonable timeframes
Develop problems requiring non-trivial reasoning chains in data processing, statistical analysis, feature engineering, predictive modeling, and insight extraction
Create deterministic problems with reproducible answers
Base problems on real business challenges (customer analytics, risk assessment, fraud detection, forecasting, optimization, operational efficiency)
Design end-to-end problems spanning the complete data science pipeline
Incorporate big data processing scenarios requiring scalable computational approaches
Verify solutions using Python with standard data science libraries and statistical methods
Document problem statements clearly with realistic business contexts and provide verified correct answers

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+)

Benefits & Perks

Up to $55 per hour equivalent compensation
Flexible, project-based work
Opportunity to work with leading tech companies
Contribute to cutting-edge AI advancements

How to Apply

Please submit your CV in English and indicate your level of English proficiency.

Join Our Communities

Join WhatsApp Channel Join Telegram Group

The AI industry is experiencing rapid growth, with a significant demand for skilled professionals to refine and enhance artificial intelligence systems. This freelance role focuses on creating complex computational problems that simulate real-world data science challenges across diverse sectors like telecommunications, finance, and healthcare. You will leverage advanced Python libraries such as Pandas and Scikit-learn, alongside SQL, to develop intricate analytical tasks. Your work will directly impact the accuracy and effectiveness of AI models, contributing to significant business ROI by improving predictive accuracy and operational efficiency.