Senior Data Scientist – UK remote job at Nationwide, United Kingdom Full Time NEW

Location: UK Remote
Salary: £60,000 – £70,000
Employment Type: Full-Time
Please note: Sponsorship is not available for this position.

Overview

A growing organisation is looking for a Senior Data Scientist to help develop advanced AI and analytics capabilities that power large-scale intelligence and data-driven products.

This is an opportunity to work within a research-focused environment, building scalable machine learning models and AI systems across areas such as NLP, recommendation systems, predictive analytics, and workforce intelligence.

The Role

As a Senior Data Scientist, you will contribute to the development and optimisation of advanced machine learning and AI models while maintaining high standards of experimentation, validation, and responsible AI practices.

You’ll work closely with AI Engineers, Product teams, and cross-functional stakeholders to deliver scalable, production-ready solutions that drive measurable business value.

Key Responsibilities

• Develop and refine machine learning models across NLP, classification, prediction, optimisation, and recommendation systems
• Apply generative AI and NLP techniques to improve modelling and data extraction capabilities
• Perform large-scale data analysis and transformation using SQL and cloud-native technologies
• Design and execute experimentation, benchmarking, and model validation frameworks
• Translate business and product challenges into scalable, data-driven solutions
• Collaborate with Engineering teams to productionise models and APIs
• Maintain best practices across reproducibility, explainability, and responsible AI
• Contribute to the development of knowledge-based and ontology-driven systems

Required Skills & Experience

• Strong commercial experience in Data Science, Machine Learning, or Advanced Analytics
• Strong Python and SQL skills
• Experience building models across NLP, prediction, optimisation, classification, or recommender systems
• Familiarity with embeddings, LLMs, and prompt engineering
• Experience working within AWS and/or Azure cloud environments
• Understanding of experimentation design, model validation, and reproducibility best practices
• Experience supporting model deployment into production environments
• Strong analytical and problem-solving skills
• Excellent communication and stakeholder engagement skills

Technology Stack

Python, SQL, Databricks, PyTorch, Transformers/LLMs, Prompt Engineering, Pandas, Spark, AWS, Azure, PostgreSQL, FastAPI, Git, CI/CD, Knowledge Graphs

What’s on Offer

• Fully remote UK-based role
• Opportunity to work on cutting-edge AI and machine learning products
• Collaborative, research-driven environment
• Exposure to modern AI, NLP, and cloud technologies
• Strong career development opportunities within a growing AI function