Kieran Greatholder-Allen

Global Payroll Lead, Associate Director 

Astellas Pharma 

Stepping into the role with extensive experience in global payroll strategy, transformation and governance, and will be responsible for leading the organisation’s global payroll operations. In his new position, Greatholder-Allen will oversee payroll standardisation, compliance and vendor management across multiple territories, supporting Astellas Pharma’s continued global growth. 

Michael McAllister

Partner, Head of Payroll & Employment Tax

AMS Group

McAllister brings significant expertise in payroll leadership and employment tax strategy. In his new role, he will lead the firm’s payroll and employment tax offering, advising clients on compliance, risk management and operational excellence while strengthening AMS Group’s advisory capabilities in this area. 

Justyna Ciesielska

Payroll Implementation Manager

Deel

Ciesielska will be supporting clients through complex payroll implementations, ensuring smooth transitions and compliance across international markets. She joins Deel’s growing implementation team, helping organisations streamline global payroll processes through technology-led solutions. 

Monique Gillis

Global Payroll Director

AppLovin

In her new role, Gillis will lead the company’s global payroll strategy, focusing on operational efficiency, compliance and scalable processes. She will work closely with finance and HR teams to support AppLovin’s expanding international workforce. 

Tara Flynn

Chief People Officer

Aer Lingus

Flynn will oversee the airline’s people strategy, including talent, culture, employee engagement and organisational development. She joins the executive leadership team to support Aer Lingus’ long-term growth and workforce strategy. 

Emma Hardaker-Jones

Chief People Officer

Hardaker-Jones will be responsible for leading the organisation’s global people function, driving workforce transformation and embedding a people-first culture across the business. She will play a key role in shaping National Grid’s strategic workforce priorities. 

Nicola Marr

Head of People Services

JD Sports Fashion

Marr will lead the retailer’s people services function, focusing on operational excellence, employee experience and scalable HR service delivery. Her appointment supports JD Sports Fashion’s continued expansion and investment in its people infrastructure. 

Tom Smith

Pensions and Benefits Manager 

Marks & Spencer

Marks & Spencer has appointed Tom Smith as its new Pensions and Benefits Manager. In his new role, Smith will be responsible for overseeing the retailer’s pensions strategy and employee benefits provision, supporting the wider people agenda and enhancing the overall reward offering across the organisation. 

Lynne Bird

Deputy Head of Payroll Services

MFT NHS 

MFT NHS has named Lynne Bird as its new Deputy Head of Payroll Services. Bird steps into the role with responsibility for supporting payroll operations, ensuring service excellence and compliance, and strengthening payroll delivery across the trust. 

Janette Guerrero-Keller

Head of Global Payroll (Mobility)

S&P Global Mobility 

Janette Guerrero-Keller has accepted the position of Head of Global Payroll (Mobility) at S&P Global Mobility. She will lead the organisation’s global payroll mobility strategy, focusing on streamlining international payroll processes and enhancing governance across jurisdictions. 

Andrew Blake

EMEA Payroll Manager

Andrew Blake has returned to the financial services sector, taking up the role of EMEA Payroll Manager at Evercore. In his new position, Blake will oversee payroll operations across the region, supporting the firm’s continued growth and ensuring robust payroll management across its EMEA footprint.