Senior HR Advisor

Overview

Who We Are Ultimate Performance (U.P.) is the world's largest globally scaled private personal training business, operating across multiple regions with a reputation for exceptional results, elite coaching, and a premium client experience. Backed by leading private equity firm Inflexion, we are a high-performance, growth-focused organisation with a strong commercial foundation and international reach. We are entering an exciting next phase of growth with an ambition to significantly expand our global studio footprint.

This is a pivotal moment to contribute to the evolution of a truly international, performance-driven brand.

The Opportunity We have a rare opportunity within our People team for a Senior HR Advisor (Employee Relations) to support our global people agenda with a strong focus on employee relations, compliance, and manager capability. This is not a passive or purely administrative HR role. Our HR team operates as trusted people and business partners, working closely with leaders to ensure fair, robust, and commercially sound decisions.

You will support, coach, and at times challenge managers, bringing credibility, empathy, and strong judgement to complex situations. This role offers genuine autonomy and trust, with the freedom to build strong relationships with managers across the global business. It requires confidence, sound judgement, and the ability to operate independently while knowing when to escalate or collaborate. Reporting directly to the Head of HR, with exposure to the Chief People Officer on wider initiatives, this role provides meaningful visibility and the opportunity to develop breadth alongside depth.

You will manage employee relations matters globally, supporting disciplinary processes, performance improvement plans, and terminations, ensuring consistency and best practice across the business. You will work with the Learning & Development team to support manager capability initiatives, including identifying common themes from employee relations casework and contributing to the design of manager development programmes and training. Within a close-knit People team, you will have ownership of employee relations matters and ensure offboarding processes, including exits and terminations, are handled consistently, compliantly, and in line with best practice across all jurisdictions.

You will also support onboarding, benefits administration, learning and development, recruitment, and health and safety, coordinating with Payroll for accuracy and a seamless employee experience across the full employment lifecycle. This role offers a genuine development pathway toward an HR Business Partner or HR Manager role as the business scales globally. You will thrive in a fast-paced, complex environment within a premium, performance-led organisation that values pragmatic, commercially grounded HR support.

The Focus The role will centre on employee relations, operational compliance, performance management, and learning & development, while ensuring alignment with global labour laws, local regulations, and internal frameworks, balancing risk, performance, and culture. For more on who we are and what we stand for, visit

• Employee Relations & Case Management
• Act as the first point of contact for all employee relations matters across the gym estate
• Manage employee relations cases end-to-end, including grievances, disciplinary actions, performance concerns, and absence management
• Ensure fair, consistent, and timely case management in line with company policy and best practice
• Maintain accurate case documentation and records
• Escalate complex or high-risk cases appropriately
• Promote positive employee relations and a respectful workplace culture
• Adapt style and approach to local labor requirements and culture
• Performance Management
• Support the delivery of performance management under the company’s structured framework (PT Check-In)
• Coach Gym Managers on setting objectives, conducting monthly reviews, and addressing underperformance
• Provide guidance on improvement plans, capability processes, and outcomes
• Ensure performance processes are applied consistently and fairly across locations
• Support managers in developing high-performing teams
• Operational HR Compliance
• Ensure Personal Trainers (PTs) and Gym Managers follow corporate HR processes and policies
• Monitor compliance with contracts, working time requirements, and people processes
• Support audits and internal checks related to HR operations
• Identify risks and recommend corrective actions
• Support consistent application of process and policies across all gyms
• Local Labour Relations & Legal Compliance
• Ensure gyms operate in compliance with local labour laws and employment regulations in each country
• Apply global HR standards while respecting local legal and cultural requirements
• Stay informed of changes in employment legislation and best practice
• Support managers with local labour relation issues and compliance queries
• Partner with external advisors where…