Applied AI Engineer - Full Time

Location: Hybrid (3 days per week in Clapham Junction)

We're The Gym Group, one of the UK's leading fitness businesses. With more than one million members and 265+ gyms, we're the UK's second-largest gym operator by membership and the fourth largest in Europe. Our mission is to break down barriers to fitness for all. Technology, data and new ideas play a central role - and you'll have the opportunity to take ownership, challenge how things are done and see the impact of your work.

This is a rare opportunity to be the first dedicated Applied AI Engineer at The Gym Group - a role with real scope, real ownership and real impact. You will build production AI solutions that change how our teams work and how our members experience fitness, working across the business as a hands-on engineer who ships code, not just ideas.

What you'll be doing:

• Designing and building production-ready agents, copilots and workflow automations that integrate with our existing systems, data and processes.
• Embedding with business and product teams to identify, scope and deliver high-value AI solutions from prototype to production, with clear measures of success and defined handover points.
• Contributing AI-enabled features to member-facing products alongside our Product Engineers, owning your work through deployment and incidents.
• Evaluating and monitoring AI solutions in production and reporting impact honestly - including cost, error rates and what did not work.
• Coaching team members while building real solutions so that capability stays with the team after each engagement, and creating reusable playbooks and standards shared across the business.
• Working daily with the AI Platform Engineer, Tech Leads, Product Leads and AI Ambassadors to use approved models and tooling and contribute reusable components back to the platform.
• Keeping human oversight and clear accountability at the centre of every solution, working with Information Security and Data Protection throughout.

What we're looking for:

• Practical experience building applied AI solutions with large language models, including retrieval-augmented generation, agents and workflow automation.
• Substantial experience building and deploying production software end-to-end, owning outcomes through deployment and support.
• Hands-on experience with LLM APIs, prompt and context engineering, retrieval and vector search, and agent workflows involving tool use and human oversight.
• Experience building and deploying secure solutions using cloud infrastructure, CI/CD and appropriate controls for data access.
• Experience working directly with non-technical stakeholders to turn ambiguous problems into scoped, working solutions.
• Proficiency in Python as a primary production language, with working knowledge of at least one additional language.
• Experience integrating APIs, systems and data sources into existing business processes in real-world environments.
• Experience evaluating and monitoring AI solutions in production, including observability and impact measurement.
• A collaborative, low-ego approach and evidence of coaching others so that technical capability stays with the team.

If you have a disability or condition that makes it difficult for you to complete your application online please email your CV or alternatively call the TGG Recruitment team for support. We actively encourage applications from a diverse demographic and are passionate about culture and value alignment.

Your application may be reviewed by an AI tool to help assess your suitability based on the information you provide. Automated decision-making is never used - every application is reviewed and all decisions are made exclusively by a member of our recruitment team. Your data will be handled in accordance with our Privacy Policy and UK GDPR.