Remote AI Data Trainer - Senior Data Scientist (Contract)

Alignerr Corp.; Greater London; Remote; GBP 83,000 - 124,000; Part time

Job summary

Alignerr is seeking a Data Scientist (Masters) to design and stress-test AI models via expert-level challenges and rigorous solutions. You’ll craft tasks that push systems to their limits and document exactly why they fail to guide improvements.

This fully remote, hourly-contract role requires deep domain expertise and an analytical mindset; prior AI industry experience is not required. Flexible 10–40 hours/week.

Qualifications

• Pursuing or holding a Master's or PhD in a quantitative field.
• Strong grounding in supervised and unsupervised learning, deep learning, or NLP.
• Ability to communicate complex algorithmic concepts in writing.

Responsibilities

• Design Advanced Challenges - Create expert-level data science problems spanning hyperparameter optimization, Bayesian inference, cross-validation strategies, dimensionality reduction, and more
• Author Ground-Truth Solutions - Develop rigorous, step-by-step technical solutions - including Python/R scripts, SQL queries, and mathematical derivations - that serve as definitive reference answers
• Audit AI-Generated Code - Evaluate AI outputs using libraries like Scikit-Learn, PyTorch, and TensorFlow for technical correctness, efficiency, and best practices
• Sharpen AI Reasoning - Identify logical failures in AI responses - data leakage, overfitting, improper handling of imbalanced datasets - and provide structured feedback that directly improves model reasoning

Skills

Supervised learning

Unsupervised learning

Deep learning

Big data spark/hadoop

NLP

Education

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

Tools

Scikit-Learn

PyTorch

TensorFlow

Python

SQL

Job description

Alignerr is seeking a Data Scientist (Masters) to design and stress-test AI models via expert-level challenges and rigorous solutions. You’ll craft tasks that push systems to their limits and document exactly why they fail to guide improvements.

This fully remote, hourly-contract role requires deep domain expertise and an analytical mindset; prior AI industry experience is not required. Flexible 10–40 hours/week.