Data Scientist

Are you ready to apply Make sure you understand all the responsibilities and tasks associated with this role before proceeding.

Senior Data Scientist

London, HybridCompetitive salary £65,000 to £70,000Can't sponsor

This is a great opportunity to join a growing Data Science function working at the forefront of conversational AI, NLP, and Large Language Model innovation. You will help shape next-generation data products used by high-profile financial services clients, with real scope to influence technical direction and model development.

The Company

This organisation builds advanced analytics and AI products that enable businesses to drive smarter, faster decision-making. Their core platforms combine Natural Language Processing, private LLMs, and robust data engineering to deliver secure, context-aware insights. They have recently expanded into the financial domain and partner with leading firms across trading and investment, offering a strong blend of innovation, stability, and technical challenge.

The Role

You will join a collaborative Data Science team responsible for developing, optimising, and deploying models that power conversational data products.

Your work will include:

• Building and fine-tuning machine learning and LLM-based models for real-time data interaction
• Designing and improving NLP and data-driven pipelines across multiple products
• Applying strong mathematical reasoning to solve complex analytical problems, particularly in financial and trading-related contexts
• Working closely with engineering, DevOps, and product teams to deploy scalable solutions in an AWS environment
• Supporting two senior Data Scientists and contributing to best practice, experimentation, and sprint delivery

• Strong commercial experience in Python and machine learning development
• A solid mathematical foundation and the ability to reason about quant-style problems
• Experience working with NLP models, LLMs, and modern ML techniques
• Exposure to financial data, trading concepts, or quantitative analytics
• Experience xwwtmva with model training, fine tuning, and evaluation
• Familiarity with cloud deployment (AWS preferred) and modern DevOps-aligned workflows
• An interest in building conversational or data assistance technologies

• Salary between £65,000 and £70,000
• Hybrid working from London, typically up to two days per week
• The chance to work with cutting-edge AI technologies and contribute to new product development
• A collaborative environment with strong senior support and room for progression, £100,000

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