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Brendan Castle

Chief People Officer
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Brendan leads our People & Culture organization, a team focused on attracting, developing, and retaining incredible professionals worldwide through talent acquisition, learning and development, internal business partners, diversity, equity, inclusion, and workplace experience.


Brendan has 30 years of senior management and employee operations experience at large organizations. Most recently, he led Google’s 3,000-person global recruiting organization, covering all hiring from new graduates to industry and executives for all products, services, sales, and engineering. He brings expertise in building highly motivated, productive teams and implementing modern employee programs.


Before joining Google in 2014, Brendan served as Managing Director and Global Head of HR Shared Services at Citigroup. There, he oversaw 1,400 employees across 45 countries in onboarding, offboarding, employee operations, payroll, equity, and mobility for Citi’s global workforce (over 300,000 at the time).


Originally from Australia, Brendan has also lived in Hong Kong, Singapore, London, New York, and now California, working in people-related capacities including HR Business Partner, HR Systems, Organizational Development, Project Management, Strategy, and Location Development.


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