Quantitative Researcher - Horse Racing

Sorry, this job was removed at 04:15 p.m. (UTC) on Thursday, Oct 09, 2025
Be an Early Applicant
London, Greater London, England, GBR
In-Office
Information Technology • Software
The Role

Are you a quantitative researcher or modeller ready to make an impact? Join us in developing sophisticated models that determine our betting strategies—what horses to back, when to place our bets, and how much to wager. In this exciting role, you'll enhance the predictive capabilities and structure of our models, embracing rapid iteration and driving innovation at the forefront of the industry.

In this position, you'll focus on enhancing model accuracy and accelerating our progress ahead of the competition. If you're someone who has hands-on experience in building innovative solutions and possesses a strong intuition for data and modelling, we'd love to connect with you!

What You'll Do

  • Build and iterate on quantitative models to make them as predictive as possible as quickly as possible – strive to make them the best on the market.
  • Design and implement state space models, neural architectures, or other statistical frameworks – whatever works best to extract predictive signals.
  • Prototype quickly, iterate and push your solutions to the production environment.
  • Work together with the wider quant team as well as the trading team, and challenge / help improve their ideas.

What You’ve Done

We are interested in what you’ve built and how you go about solving problems.

  • You have solved at least one difficult modelling-based problem (can be Kaggle).
  • You’ve designed and built your own modelling pipeline / tool end-to-end.
  • You’ve built models on real data, and have developed intuition for what works in your domain.
  • You managed to implement modern statistical tools / models yourself and understand how they work under the hood.
  • You have a background in a STEM field like statistics / mathematics / machine learning / computer science / physics.

Requirements

You'll have:

  • Strong grasp of statistics, preference for understanding neural network architectures and state space / time series models and how to make them work in code.
  • Strong intuition for working with real-life data and its traps.
  • Proficiency in at least one programming language, preference for Python.
  • Clarity of thought and being able to own and defend your modelling choices without unnecessary jargon.
  • High velocity: you learn and build fast, iterate, and enjoy pushing what’s possible through engineering.

Horse racing knowledge is not required. We have a separate data team helping us, so building data pipelines does not fall within the scope of this role.


Benefits

Why join Mustard Systems?

    • Work on cutting-edge systems in a competitive and innovative field.
    • Collaborate with a smart, driven team, where your contributions directly impact business performance.
    • Opportunity to drive the company’s technical direction and double its revenue in the next three years.

Comprehensive benefits, including:

    • Competitive salary and significant bonus potential.
    • Enhanced pension match with salary sacrifice option.
    • Health insurance and life assurance.
    • Sabbatical leave after five years.
    • 33 days of annual leave (including bank holidays).

Similar Jobs

Square Logo Square

Enterprise Account Executive

eCommerce • Fintech • Hardware • Payments • Software • Financial Services
Remote or Hybrid
London, Greater London, England, GBR
12000 Employees

Square Logo Square

Business Development Representative

eCommerce • Fintech • Hardware • Payments • Software • Financial Services
Remote or Hybrid
London, Greater London, England, GBR
12000 Employees

TIDAL Logo TIDAL

Creative Director

Consumer Web • Information Technology • Mobile • Music • News + Entertainment • Software
Remote or Hybrid
London, Greater London, England, GBR
450 Employees

Boeing Logo Boeing

Airworthiness Engineer (Certification)

Aerospace • Information Technology • Software • Cybersecurity • Design • Defense • Manufacturing
Hybrid
Frimley, Surrey Heath, Surrey, England, GBR
170000 Employees
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: London
65 Employees
Year Founded: 2014

What We Do

We are a young fast growing company in London W6. We develop pricing models and use those models to provide various services to our clients who include renowned licensed bookmakers and professional gamblers. Mustard Systems was founded in 2014 having spun out of a highly successful quantitative research and software business. With the experience from this great heritage combined with a young, aspiring and bright team, we are very well positioned to take advantage of market developments in both the short and long terms.

Similar Companies Hiring

Revel Thumbnail
Aerospace • Hardware • Robotics • Software
Marina Del Rey, California
70 Employees
Blee Thumbnail
Artificial Intelligence • Marketing Tech • Software
New York, New York
33 Employees
RapidScale Thumbnail
Cloud • Information Technology • Consulting
Raleigh, NC
600 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account