Senior Data Scientist

The Pure Gym Way

The Pure Gym Group is a global gym business with a community of more than 700 gyms and over 2 million members. At Pure Gym, everything we do comes back to one simple idea: helping you feel good.

We're proud of our people and have a strong focus on internal progression. Championing diversity, we are committed to providing an excellent employee experience and workplace culture. As such, we are a Disability Confident Committed employer, and offer interviews to candidates who meet the essential criteria for a role, and opt-in to the scheme on their application form.

Our gyms are friendly, supportive, and judgement-free spaces where everybody can come in, work out and leave Feeling Pure Gym Good. We are proud to be certified by Top Employers Institute. See our careers page for full benefits.

We offer

• Free nationwide gym membership for you + 1
• Hybrid working
• A truly flexible working culture
• Personal private healthcare, including digital GP
• Life insurance x4
• Company pension contribution
• 25 days annual leave, plus 1 personal day
• Option to purchase additional holiday (up to 5 days)
• Great learning & development resources
• Enhanced maternity pay, paternity and adoption leave

Location: London / Hybrid

Type: Full Time

Contract: Permanent

Final date to receive applications: 19/10/26

We are looking for a Senior Data Scientist to join our Data & Analytics team, working between home and our London office in Angel, Islington.

The Role

Data Science at Pure Gym influences some of the biggest decisions we make, from where we open our next gyms and how we price, to how we keep millions of members coming back.

Our models shape real decisions across retention, pricing, customer lifetime value and estate growth, with the impact showing up in the numbers our business runs on.

We're a small, experienced team that's great at turning good ideas into working solutions quickly. You'll join people who care about doing Data Science well, and you'll see your work used to make real commercial decisions throughout the business, not just admired in a notebook.

As our Senior Data Scientist
, you'll take the technical lead on the modelling behind Pure Gym's spatial analytics capability.

You’ll help us answer some of our most commercially important questions:
where should we grow, how do our gyms fit within their local communities, and what drives the performance of different locations?

This is a role with significant ownership. You'll take spatial and location models from prototype through to trusted, production-ready assets, ensuring they're rigorous, explainable and capable of supporting confident investment and commercial decisions.

What you'll be doing

• Own the spatial and location models that power our analytics tools, taking them from prototype through to maintained, well-documented production assets.
• Build and evolve catchment, location and demand models that help us understand our markets, communities and opportunities for growth.
• Partner closely with Property and Finance
  , translating commercial questions into analytical problems and ensuring our models deliver meaningful business value.
• Rigorously validate models through out-of-time testing, leakage checks, sensitivity analysis and clear measures of uncertainty, ensuring every input genuinely reflects the information available at the point a decision is made.
• Develop approaches for locations with limited historical data, using your technical judgement to determine when there is enough evidence to trust a result.
• Work with Engineering and Data colleagues to turn model outputs into reusable, scalable data assets rather than one-off analysis or tables
  .
• Partner with MLOps colleagues to deploy, monitor and retrain models, with clear ownership, versioning in MLflow and documented handover points.
• Turn complex model outputs into clear, commercially relevant recommendations for senior stakeholders
  , including being transparent about uncertainty and where a model should, and should not, be used.
• Evaluate external and third-party models with technical rigour, challenging assumptions and helping set the standard for how we assess them.
• Contribute to shared development standards and peer review, sharing knowledge so that our capability can scale and no critical model is dependent on one person.
• Help shape the future of spatial analytics at Pure Gym
  , identifying opportunities to improve our methods, tools and the commercial impact of our models.

The Person

You're an experienced Data Scientist with strong geospatial expertise who…