Senior Data Scientist

Senior NLP / LLM Data Scientist (Contract) – Transformers | Semantic Search | RAG

Remote | UK / EU Time Zones | B2B / Outside IR35

We’re hiring a Senior Data Scientist for a long‑term contract with a scaling digital platform that’s investing heavily in its AI, search, and NLP capabilities.

This is a hands‑on NLP / LLM role , working across production‑grade text systems that power search, ranking, classification, lead‑matching, and customer experience. You’ll join a small, high‑impact data function where ownership is high and the work you ship directly influences product performance.

• Building and improving modern NLP pipelines using transformer models (BERT / SBERT / DistilBERT / LLM embedders)
• Designing and deploying semantic search components (dense retrieval, hybrid retrieval, vector stores)
• Developing text classification and similarity models for customer behaviour and lead‑quality analysis
• Contributing to RAG‑based AI features (retrieval augmented generation, prompt workflows, embedding pipelines)
• Collaborating closely with Data Engineering and MLOps to build robust, scalable, end‑to‑end NLP model deployment & monitoring

• Python (Transformers, SentenceTransformers, PyTorch, scikit‑learn)
• HuggingFace ecosystem (pretrained & fine‑tuned models)
• Vector databases (FAISS, Pinecone, Weaviate)
• Cloud ML platforms (AWS / GCP / Azure)
• CI / CD, MLflow, Docker, modern MLOps tooling
• Experience with LLM APIs (OpenAI, Cohere, Anthropic) is highly valuable

• A Senior Data Scientist with proven, recent production experience in NLP / LLMs
• Strong knowledge of transformer‑based modelling, semantic search, embeddings, and text‑classification pipelines
• Confident designing NLP / LLM systems from scratch — retrieval, ranking, evaluation, deployment
• Clear communicator who can explain architecture and reasoning in a structured way
• Pragmatic, delivery‑focused, and able to operate with autonomy

• 6‑month contract (extensions very likely)
• Remote — UK or EU time zones
• Start date : ASAP
• Streamlined interview process

This is a fantastic opportunity for a hands‑on NLP / LLM specialist to build real production systems, drive meaningful product improvements, and help shape the next phase of AI‑driven innovation within a fast‑moving digital business.

If this sounds like your kind of project, please apply!