Global Payroll & Benefits Manager

Job Title: Global Payroll & Benefits Manager Location: Hybrid   About Radiant Radiant is redefining how AI infrastructure is built. We design and operate AI-native cloud platforms engineered for sovereignty, performance, and scale. Our infrastructure powers GPU-native workloads, multi-tenant control planes, and high-performance AI systems designed for the most demanding environments. We are not building a generic cloud. We are building purpose-built AI infrastructure - from powered land, to compute, to software . As we scale our platform and expand our engineering organisation, we are looking for leaders who can build strong teams, uphold high standards, and deliver reliably at pace. Job Summary: Radiant is growing quickly across multiple countries, and we need a payroll and benefits specialist to make sure every employee is paid accurately, on time and in line with local law. As Global Payroll & Benefits Manager, you will own end-to-end payroll delivery for our international entities and manage our employee benefits programmes. You will also lead the systems work that lets payroll scale with the business, with HiBob at the centre. You will sit within the People team and work closely with local HR, Finance and external payroll providers. Key Responsibilities: Payroll delivery and compliance Take ownership of end-to-end payroll delivery for assigned international entities. Manage, audit and execute multi-country payroll, covering payroll inputs, validation, approvals, funding coordination, reconciliations, statutory filings and post-payroll activities, with high accuracy and strict adherence to regional pay schedules. Lead the payroll calendar and operating cadence across countries, proactively managing dependencies, cut-offs, exceptions and risks so that employees are paid accurately and on time. Apply a strong understanding of legislation, statutory requirements and payroll practice across multiple jurisdictions, keeping processes compliant and appropriately controlled. Act as the main point of contact for external payroll providers and Employer of Record partners, holding them to agreed service levels. Resolve employee payroll queries promptly and clearly, escalating complex cases where needed. Support internal and external audits, providing accurate documentation and evidence of controls. Benefits Administer employee benefits across all countries, including pension, health insurance, life assurance and other local schemes. Manage annual renewals and open enrolment, and oversee joiner, leaver and life-event changes. Partner with brokers and providers, benchmarking our offering against local market practice and supporting recommendations on benefits strategy. Ensure benefits deductions and taxable benefits flow accurately into payroll and meet local reporting requirements. Support the design and rollout of benefits in new countries as Radiant expands. Systems and scaling initiatives Act as functional lead for payroll technology projects, using HiBob to automate workflows, optimise system configuration and build custom reporting. Partner with local HR and Finance to ensure payroll inputs are complete, accurate and delivered within agreed timelines. Identify and deliver process improvements that reduce manual work, strengthen controls and support onboarding of new entities. Build and maintain clear payroll documentation, process maps and controls so the function can scale with the business. Qualifications: Significant experience running multi-country payroll end to end, ideally across the UK, Europe and the US. Strong working knowledge of payroll legislation, tax and social security requirements across multiple jurisdictions. Hands-on experience administering employee benefits, including pensions and insured benefits. Experience managing outsourced payroll providers and Employer of Record partners. A track record of improving payroll processes and systems, with experi