AI Engineer/ML Engineer - Senior Developers - AI Training - Nottingham, UK

Role overview Join an expert contributor network as a senior AI/ML engineer helping train and evaluate large language models. The work is project-based and remote, centered on providing high-quality technical judgement to research teams building next-generation AI systems in Nottingham, UK.

Responsibilities

- Review AI-generated explanations of model architectures, loss functions, and backpropagation for technical accuracy. - Audit machine learning code, including training loops, data preprocessing scripts, and evaluation notebooks, for correctness and efficiency. - Supply structured human feedback used to refine reinforcement learning from human feedback (RLHF) pipelines. - Critically assess chain-of-thought reasoning, flagging hallucinations, biases, and logical breakdowns in model outputs. - Run comparative benchmarks across model outputs against defined technical taxonomies and performance metrics.

Requirements

- BS, MS, or PhD in Computer Science, Artificial Intelligence, Robotics, or a related quantitative field with a machine learning focus. - Hands-on experience building, deploying, or fine-tuning ML models in production environments. - Professional-level understanding of neural network architectures (Transformers, CNNs, RNNs) and optimization techniques. - Practical experience with prompt engineering, RLHF, or retrieval-augmented generation (RAG) workflows. - Ability to audit complex model logic, detect training data contamination, and evaluate mathematical proofs. - Sharp attention to detail for spotting hallucinations and biased or flawed AI-generated content.

Nice to have

- Expert proficiency with PyTorch or TensorFlow/Keras, advanced Python (NumPy, Pandas, Scikit-learn), and Hugging Face Transformers. - Familiarity with cloud ML platforms (AWS SageMaker, Google Vertex AI) and tooling like Weights & Biases, LangChain, Pinecone, Milvus, or Weaviate.

Benefits and work setup

- Remote, flexible contributor model with paid hourly tasks, often at rates up to $80 per hour for this skill profile. - Tasks typically require up to one hour of uninterrupted focus, with many being shorter.