Data Scientist

TWENTY FIRST GROUP

London, UKhybridPosted Jul 21, 2026
Posting intelligenceActively listedReposted 50×, possible evergreen/ghost posting

Skills

bayesianpython

About the role

Data Scientist, Sports BettingRole Overview

We're looking for a Data Scientist to join our Sports Betting vertical. You’ll develop predictive models, contributing to our growing portfolio of pre-match and in-play products and services for the sports betting industry.

What You’ll Do

Modelling & Analysis: Develop, train, and evaluate predictive models using machine learning and statistical techniques, with a focus on probabilistic and Bayesian approaches. Contribute to the modelling lifecycle from feature engineering and training through to validation and deployment.

Data Work: Query, clean, and explore datasets using Python and SQL to surface patterns and support model development.

AI-Assisted Development: Leverage AI tools to accelerate and improve your day-to-day workflow.

Quality & Rigour: Apply good model development discipline through version control, testing and documentation.

Requirements

What You’ll Bring

Passion for Sport: You follow sports and understand the context of the data and markets we build for. Comfortable with sport-driven modelling decisions.

Machine Learning & Statistics: Solid grounding in machine learning, supervised and unsupervised methods, and classical statistical techniques. Comfortable working with probabilistic models, uncertainty estimation and Bayesian inference.

Model Development: Understanding of the full model training pipeline, including data preparation, feature selection, model selection and model validation.

Experience: Hands-on experience building and evaluating models in a data science or quantitative context.

Python & SQL: Comfortable using python and SQL for data exploration, feature development and modelling workflows.

Communication: Able to present findings clearly to both technical and non-technical audiences.

Nice to Haves

Simulation: Experience with Monte Carlo methods or probabilistic simulation.

AI Integration: Comfortable using AI-assisted coding tools such as Claude Code or Cursor as part of your everyday workflow, and open to integrating them deeper into how you model and build.

What We Look For

Curiosity: You are naturally curious about the “Why”. You look at data and customer behaviour to inform your decisions.

Collaborative & Open: You treat your work as a starting point for collaboration. You contribute to shared knowledge and code bases, and value engaging with your peers to build solutions.

Continuous Development: You are keen to develop knowledge and skills, keeping up to date with relevant developments and applying new learning where appropriate.

Benefits

What We Offer

Hybrid working out of our London office (Farringdon) - most of our staff come into the office about twice a week

Salary based on our external benchmarking framework, plus eligibility for a bonus scheme

Private health insurance, occupational life cover, and income protection insurance

Personal days, including birthdays and health and wellness days

AI forward culture including Claude Code Premium subscription

Questions about this role

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