Senior AI Engineer — Remote, Flexible Hours, RLHF & LLM

prolificacademicltd; United States; Remote; USD 91,000 - 129,000; Part time

Job summary

Prolific Academic Ltd. seeks senior AI/ML engineers to join an expert network contributing to large language model training and evaluation. Engagement is task-based, with participants paid per study for applying deep technical judgment to model outputs and ML artifacts.

The work shapes how next-generation AI systems reason, code, and align with human intent. Roles are fully remote with flexible hours and quick onboarding.

Qualifications

• BS, MS, or PhD in CS/AI/Robotics or related quantitative field with ML focus.
• Professional experience building, deploying, or fine-tuning ML models in production.
• Working knowledge of neural networks including Transformers, CNNs, and RNNs with optimization techniques.
• Hands-on with prompt engineering, RLHF, or retrieval-augmented generation (RAG).
• Ability to audit model logic, surface data contamination, and evaluate proofs behind ML algorithms.
• Attention to detail to catch hallucinations, biased outputs, and logical failures.

Responsibilities

• Assess explanations of neural architectures for technical correctness.
• Validate training loops, preprocessing scripts, and evaluation notebooks for efficiency and correctness.
• Provide structured feedback powering RLHF pipelines.
• Trace how models handle chain-of-thought prompts and identify breakdowns.
• Benchmark model outputs against defined technical taxonomies and metrics.

Skills

Transformers

CNNs

RNNs

Prompt engineering

RLHF

RAG

PyTorch

TensorFlow

Keras

Education

BS/MS/PhD in CS/AI

PhD in ML

Tools

PyTorch

TensorFlow

Keras

Hugging Face

Weights & Biases

LangChain

Pinecone

Job description

Prolific Academic Ltd. seeks senior AI/ML engineers to join an expert network contributing to large language model training and evaluation. Engagement is task-based, with participants paid per study for applying deep technical judgment to model outputs and ML artifacts.

The work shapes how next-generation AI systems reason, code, and align with human intent. Roles are fully remote with flexible hours and quick onboarding.