Third Party Supplier & Transition Operations Leader

Critical Third Party Supplier & Transition Operations Leader – UK, Ireland and South Africa

Ready to take the lead in shaping how transitions and third-party operations are delivered across Aon UK, Ireland and South Africa? If you bring senior operations experience from complex, global organisations and know how to drive supplier performance and transformation—this role is for you.

This hybrid role is based in our London office and offers flexibility to work both in-office and virtually.

Aon is in the business of better decisions

At Aon, we shape decisions for the better to protect and enrich the lives of people around the world.

As an organisation, we are united through trust as one inclusive team and we are passionate about helping our colleagues and clients succeed.

What the day will look like

The Transitions Operations Leader will lead third-party oversight and transition initiatives across Aon UK, driving operational excellence and transformation. You’ll coordinate cross-functional teams, develop strategies, and ensure seamless implementation of transitions aligned with the Aon Business Services Operating Model.

This role includes managing relationships with strategic UK BPO partners, ensuring governance and performance against SLAs, and acting as a key escalation point. You’ll collaborate with business and operations stakeholders, Global Supplier Management, and Legal teams to support contractual and delivery objectives.

Transition Management

• Lead and manage transition projects from start to finish.
• Develop strategies for smooth transitions and measurable outcomes.
• Coordinate cross-functional teams and ensure timely delivery.
• Track progress, mitigate risks, and ensure adherence to Aon methodologies.
• Partner with Finance to monitor benefits realisation.

Third Party and Operations Leadership, Governance and Stakeholder Relationship Management

• Build strong relationships with senior stakeholders and external partners.
• Guide UK Operations leaders on third-party strategy and delivery.
• Communicate clearly to align stakeholders and manage expectations.
• Maintain governance and performance oversight of third-party suppliers, including Genpact.
• Resolve escalations and support Centres of Excellence.
• Drive automation and process improvements using the ABS service catalogue.
• Ensure compliance with Aon’s Risk Management Framework, including risk assessments and ERM participation.

How this opportunity is different

This is a unique opportunity to join the UK & Ireland COO Leadership Team and collaborate across solution lines, central teams, Centres of Excellence, and BPO partners to transform Aon’s operating model and deliver client and financial benefits.

Skills and experience that will lead to success

• Proven experience in third-party management and transition delivery.
• Strong background in global matrix environments and offshore collaboration.
• Exceptional partnering and communication skills, with the ability to engage and influence senior and C-suite stakeholders.
• Expertise in change management and operational improvement.
• Excellent organisational skills, with the ability to manage multiple projects and priorities effectively.
• Experience in regulated environments, with sound knowledge of risk and compliance frameworks.

How we support our colleagues

In addition to our comprehensive benefits package, we encourage an inclusive workforce. Plus, our agile environment allows you to manage your wellbeing and work/life balance, ensuring you can be your best self at Aon. Furthermore, all colleagues enjoy two “Global Wellbeing Days” each year, encouraging you to take time to focus on yourself. We offer a variety of working style solutions for our colleagues as well.

Our continuous learning culture inspires and equips you to learn, share and grow, helping you achieve your fullest potential. As a result, at Aon, you are more connected, more relevant, and more valued.

Aon values an innovative and inclusive workplace where all colleagues feel empowered to be their authentic selves. Aon is proud to be an equal opportunity workplace.

Aon provides equal employment opportunities to all employees and applicants for employment without regard to race, colour, religion, creed, sex, sexual orientation, gender identity, national origin, age, disability, veteran, marital, domestic partner status, or other legally protected status.

We are committed to providing equal employment opportunities and fostering an inclusive workplace. If you require accommodations during the application or interview process, please let us know. You can request accommodations by emailing us at or your recruiter. We will work with you to meet your needs and ensure a fair and equitable experience.

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