Nikki O’Sullivan

Lady Hale Building lit up with rainbow lights at night

Nikki O’Sullivan is the Manchester area Chief of Staff for BNY Mellon. 

Nikki O'Sullivan portrait

Nikki holds the position of Chief of Staff at the Manchester site, one of the company's six strategic locations. With 30 different functions and comprising 2000 employees, Nikki provides direct support to the Site Executive. Her role encompasses leading the Management Office team, implementing site strategy, managing relationships with charitable organisations, government entities, and industry partners, supervising diverse projects, enhancing the firm's reputation to attract new talent, and advancing the infrastructure and real estate development plans. 

Nikki embarked on her career with BNY Mellon in January 2011 as a Human Resources recruiter and has progressively advanced through multiple positions with greater responsibility. She has served as the EMEA HR Service Delivery Manager, leading a significant operational team, and worked as Principal in Third Party Governance, where her responsibilities included overseeing operations teams in dealings with inter-affiliates and external vendors while ensuring regional regulatory compliance. 

Known for her expertise in people management, strategic planning, and operational oversight, Nikki is an advocate for equality, diversity, and inclusion. She champions these values as the executive sponsor of 'HEART', the internal employee resource group dedicated to raising awareness for disabilities and fostering a working environment where all colleagues feel valued and included. In 2023, she received a 'Community & Inclusion' award for her efforts in promoting Manchester's cultural advancement and establishing the first global 'Unwind Room' catering to neurodiverse staff. 

Among Nikki's significant contributions was her pivotal involvement in the Global MYHR project in 2017. She played an instrumental part in the deployment of a case management system which modernised and automated HR procedures throughout the EMEA region, significantly improving efficiency, accuracy, and regulatory adherence of HR endeavours while also refining the overall employee experience. She deftly handled project leadership, stakeholder communication, change management, and training for this extensive initiative.