Data Scientist - Tax & Legal

Job Title: Data Scientist
Location: London
Salary/Rate: Up to £620 per day inside IR35
Start Date: 10/11/2025
Job Type: Contract

Company Introduction

We are looking for a Data Scientist to join our Data and AI Team supporting internal service delivery transformation projects across Tax and Legal. You will be a Python and Azure expert in designing and building cutting-edge generative AI solutions for complex challenges. You will report to the Technical Lead and collaborate with data scientists, software engineers and market specialists across the team to build and deliver high-impact solutions

Job Responsibilities/Objectives

Build and deploy Python based AI applications
Research and design advanced experiments and prototypes using cutting edge techniques, specifically in GenAI
Develop various LLM assisted frameworks
Design and write clean, maintainable, auditable and well documented codebases
Implement testing pipelines and evaluation frameworks
Good documentation practices to ensure seamless operations
Exceptional teamwork and communication skills working in a cross functional environment with other data scientists, software engineers and T&L domain expertsRequired Skills/Experience
The ideal candidate will have the following:

Be an expert Python programmer proficient in frameworks/libraries such as: Numpy, Pandas, Scikit-Learn, Langchain, Llamaindex, Azure AI Foundry amongst others.
Must have Azure and be an expert with R&D on generative AI techniques
Practical experience with GenAI techniques such as Finetuning, Prompt engineering, prompt orchestration, retrieval methods (RAG and Knowledge graph techniques), Agentic Systems etc.
Knowledge of Agentic frameworks such as LangGraph, Azure AI Foundry Agents, Semantic Kernel Agents etc.
Knowledge of prompt orchestration and optimisation techniques such as Azure Semantic Kernel, Prompt flow etc.
Skilled at working with AI engineers to write production ready python code and implementing robust quality control methods in solutions
Have knowledge of basic software engineering concepts and best practices for team-based programming, including versioning, testing, and deploymentDesirable Skills/Experience
Although not essential, the following skills are desired by the client:

Adept at creating highly optimised workflows and solutions
Deep knowledge of various Microsoft Azure AI services
Strong data analytics and visualisation skills specifically using tools like Excel and Alteryx
Knowledge of Responsible AI practicesIf you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.

Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.
Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement