Data Scientist (Masters)

Alignerr; Canada; Remote; CAD 55,000 - 117,000; Full time

Job summary

Alignerr Corp. is seeking a Data Scientist (Masters) to join our network of AI trainers working with leading labs. This fully remote, hourly contract role challenges you to design advanced data science problems and produce rigorous ground-truth solutions in Python/R, SQL, and math derivations.

You will audit AI-generated code and provide precise feedback to improve model reasoning, addressing issues like data leakage and overfitting, all while communicating results clearly in writing.

Qualifications

• Pursuing or holding a Master's or PhD in a quantitative field.
• Strong foundation in supervised/unsupervised learning and NLP basics.
• Able to communicate technical ideas clearly in writing.

Responsibilities

• Design complex data science challenges spanning ML topics.
• Author ground-truth solutions with code and SQL queries.
• Audit AI-generated code for accuracy and efficiency.
• Provide actionable feedback to improve model reasoning.

Skills

Machine learning

Statistical inference

Data engineering

Education

Master's or PhD in Data Science/Statistics/CS

Tools

Scikit-Learn

PyTorch

TensorFlow

SQL

Python

R

Job description

Data Scientist (Masters) — AI Data Trainer

About The Role

What if your expertise in machine learning, statistical inference, and data engineering could directly shape how the world's most advanced AI reasons through complex problems?

We're looking for skilled data scientists to join Alignerr's network of expert AI trainers — working alongside leading AI research labs to challenge, evaluate, and improve cutting-edge language models on deep technical topics.

This is a fully remote, flexible contract role. No prior AI industry experience required — just a strong command of data science fundamentals and the ability to communicate technical ideas with precision.

• Organization: Alignerr
• Type: Hourly Contract
• Location: Remote
• Commitment: 10–40 hours/week

What You'll Do

• Design Complex Challenges: Develop advanced data science problems spanning hyperparameter optimization, Bayesian inference, cross-validation strategies, dimensionality reduction, and more — stress-testing model reasoning at the frontier
• Author Ground-Truth Solutions: Build rigorous, step-by-step reference solutions including Python/R scripts, SQL queries, and mathematical derivations that serve as the gold standard for model training
• Audit AI-Generated Code: Evaluate model outputs using libraries like Scikit-Learn, PyTorch, and TensorFlow — assessing technical accuracy, efficiency, and correctness of data visualizations and statistical summaries
• Refine Model Reasoning: Identify logical flaws in AI outputs — such as data leakage, overfitting, or improper handling of imbalanced datasets — and provide structured, actionable feedback that improves how models think

Who You Are

• Pursuing or holding a Master's or PhD in Data Science, Statistics, Computer Science, or a quantitative field with heavy emphasis on data analysis
• Strong foundational knowledge in core areas such as supervised/unsupervised learning, deep learning, big data technologies (Spark/Hadoop), or NLP
• Able to communicate complex algorithmic concepts and statistical results clearly and concisely in written form
• Precise and detail-oriented when reviewing code syntax, mathematical notation, and the validity of statistical conclusions
• No prior AI training or annotation experience required

Nice to Have

• Prior experience with data annotation, data quality assessment, or evaluation systems
• Proficiency in production-level data science workflows such as MLOps or CI/CD for models
• Familiarity with model evaluation frameworks or benchmarking methodologies

Why Join Us

• Work directly with industry-leading AI language models at the cutting edge of the field
• Fully remote and flexible — work when and where it suits you, on your own schedule
• Freelance autonomy: high agency, global reach, and task-based structure that respects your expertise
• Contribute to meaningful work that shapes how AI reasons through the world's hardest technical problems
• Potential for ongoing contract renewals as new AI projects launch