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.

You’ll Be Working On:

• 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

Tech Environment:

• 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

What We’re Looking For:

• 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

Key Points

• 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!