Senior Data Scientist – Loan Deal Scoring & LLM Workflows - (Remote, Outside IR35)

Overview

We’re partnering with a high-performing applied AI team delivering advanced analytics solutions within financial services. They are seeking a Senior Quant Data Scientist to help build next-generation loan deal scoring models combining traditional machine learning, time-series analysis, and LLM-driven workflows.

This is a fully remote, outside IR35 contract with strong likelihood of extension (or potential permanent conversion).

Key Responsibilities

• Develop and deploy ML models for loan/deal scoring (classification, regression, ranking)
• Analyse financial, credit, and time-series data to extract predictive signals
• Build and benchmark models such as:
  • Gradient boosting (XGBoost, LightGBM, CatBoost)
  • Random Forests
  • Logistic / linear regression
• Design LLM-powered workflows for:
  • Document understanding (loan docs, credit memos, financials)
  • Risk factor extraction
  • Deal-level reasoning and recommendations
• Combine structured ML outputs with LLM-based reasoning to deliver explainable scores
• Work closely with stakeholders to translate credit policy into data-driven workflows
• Support model validation, explainability, and performance evaluation

Requirements

• Strong experience as a Senior Quant Data Scientist
• Deep understanding of:
  • Regression, classification, and ranking models
  • Time-series analysis & feature engineering
• Hands-on experience with:
  • Python (pandas, NumPy, scikit-learn, etc.)
  • Gradient boosting frameworks (XGBoost / LightGBM / CatBoost)
• Experience working with LLMs (prompting, RAG, embeddings, evaluation)
• Ability to work across structured + unstructured data
• Strong communication skills – able to engage directly with stakeholders

Desirable

• Experience in:
  • Credit risk / lending / underwriting
  • Financial data / loan documentation
  • Deal scoring / probability of default
• Exposure to agentic workflows / LLM orchestration
• Experience with production ML or MLOps

Details

• Contract: 6 months rolling
• Rate: £750 (Outside IR35)
• Location: Fully remote
• Start: ASAP