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Siena Partnership
Data Scientist

Data Scientist

Hybrid

London, United kingdom

Freelance

15-12-2025

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Skills

Leadership Python PyTorch Scikit-Learn TensorFlow Analytics Data Science

Job Specifications

The Siena Partnership are working with a Financial Services provider seeking an experienced Data Scientist to support and enhance AI-driven solutions across the business on a 6-month contract.

This role sits within the central Data & Analytics function and reports to the Director of Data.

The role

Evaluate, optimise, and enhance existing AI/ML and agentic AI models developed by third-party vendors
Ensure models are robust, scalable, well-documented, and aligned with regulatory requirements
Support knowledge transfer and help build a permanent in-house data science capability
Work closely with technology teams, business stakeholders, and senior leadership

Key requirements

Strong hands-on experience with Python and ML frameworks (e.g. PyTorch, TensorFlow, scikit-learn)
Experience with LLMs, prompt engineering, and agentic AI frameworks
Understanding of data pipelines, cloud environments, and model governance
Background in financial services or asset management preferred
Confident communicator able to explain complex concepts to non-technical audiences

About the Company

Siena Partnership is a boutique consultancy providing executive search, interim management, delivery teams and advisory services. We connect high-performing professionals from technology, change, finance and operations across multiple sectors. For further insight into the business please visit our website. http://www.thesienapartnership.com Know more