Senior AI/ML Engineer - Remote, $80/hr, RLHF & Evaluation

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

Benefits offered by this job

Fully remote

Flexible hours

Fast onboarding in minutes

Job summary

Prolific Academic Ltd is recruiting a senior AI/ML engineer for a contract role to train and evaluate large language models via focused one-hour tasks. You will join an expert contributor network, provide precise feedback, and help improve RLHF alignment across complex prompts.

Experience with Transformers, prompt engineering, and auditing model logic is essential. This fully remote opportunity offers flexible hours and onboarding in minutes after a quick skills assessment.

Qualifications

• Bachelor's, Master's or PhD in Computer Science, AI, Robotics or related ML field.
• Proven production experience building, deploying, or fine-tuning ML models.
• Deep understanding of neural networks (Transformers, CNNs, RNNs) and optimization.
• Hands-on experience with prompt engineering, retrieval-augmented generation, or RLHF workflows.
• Ability to audit complex model logic, detect data contamination, and evaluate ML proofs.

Responsibilities

• Critique AI-generated explanations of model architectures, loss functions, and backpropagation for correctness.
• Review ML-focused code, including training loops, preprocessing scripts, and evaluation notebooks.
• Deliver high-quality feedback to improve RLHF-driven alignment with intent, safety, and helpfullness.
• Stress-test AI reasoning on chain-of-thought prompts and flag breakdown points.
• Benchmark model outputs against defined taxonomies and performance metrics.

Skills

ML knowledge

Prompt engineering

RLHF workflows

Auditing model logic

Analytical reasoning on AI outputs

Education

Bachelor's, Master's, or PhD in CS/AI/Robotics or related ML field

Tools

PyTorch

TensorFlow/Keras

NumPy

Pandas

Scikit-learn

Hugging Face Transformers

AWS SageMaker

Google Cloud Vertex AI

Weights & Biases

LangChain

Pinecone

Milvus

Weaviate

Job description

Prolific Academic Ltd is recruiting a senior AI/ML engineer for a contract role to train and evaluate large language models via focused one-hour tasks. You will join an expert contributor network, provide precise feedback, and help improve RLHF alignment across complex prompts.

Experience with Transformers, prompt engineering, and auditing model logic is essential. This fully remote opportunity offers flexible hours and onboarding in minutes after a quick skills assessment.