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!