Senior AI/ML Engineer — Remote Contractor (Paid by Hour)

prolificacademicltd; United States; Remote; USD 83,000 - 110,000; Full time

Benefits offered by this job

Fully remote

Flexible engagement

Competitive hourly pay

Job summary

prolificacademicltd in the United States seeks senior AI/ML engineers for a flexible, remote contractor-style role that supports the training and evaluation of large language models.

You will review explanations, audit ML code and notebooks, provide high-quality human feedback for RLHF, and benchmark model outputs using technical taxonomies and metrics. The engagement is fully remote, hourly, and starts after a short skills assessment.

Qualifications

• Advanced degree in CS/AI or related quantitative field.
• Experience building, deploying, or fine-tuning ML models in production.
• Hands-on with neural networks such as Transformers, CNNs, RNNs and their optimization.

Responsibilities

• Review AI-generated explanations of model architectures, loss functions, and backpropagation for technical accuracy.
• Audit ML code and notebooks for efficiency and correctness.
• Provide high-quality human feedback for RLHF and alignment to guide model behavior.
• Analyze how an AI model handles chain-of-thought prompts and identify reasoning failures.
• Benchmark model outputs using defined taxonomies and metrics.

Skills

Transformers

Prompt engineering

RLHF

Code auditing

ML deployment

Education

Bachelor's/Master/PhD in CS/AI

Quantitative field focus

Tools

PyTorch

TensorFlow

Hugging Face

AWS SageMaker

Job description

prolificacademicltd in the United States seeks senior AI/ML engineers for a flexible, remote contractor-style role that supports the training and evaluation of large language models.

You will review explanations, audit ML code and notebooks, provide high-quality human feedback for RLHF, and benchmark model outputs using technical taxonomies and metrics. The engagement is fully remote, hourly, and starts after a short skills assessment.