Senior Internal Auditor
Listed on 2026-05-02
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Finance & Banking
Auditor Accountant, Financial Compliance
The Internal Audit Department reports directly to the Audit Committee of Aon plc's Board of Directors. The global department has approximately 70 team members located in Chicago, London, Amsterdam, and Krakow. The department's primary mission is to add value to the organization by providing management assurance and advisory assessments with a focus on evaluating the adequacy of Aon's internal control environment and to assess compliance with corporate policy and designated laws and regulations.
The Senior Auditor is a developing audit professional who is primarily responsible for participating in audit projects of Aon business units to evaluate the adequacy of internal controls in both design and application. The Senior Auditor is also responsible for performing advisory project work, such as assisting in corporate investigations, ad‑hoc special projects and Sarbanes‑Oxley 302 and 404 compliance activities.
What the day will look like- Participating in audits evaluating the adequacy of controls for Aon business units and/or key business processes. Included in these responsibilities are:
- Demonstrating knowledge and understanding of assigned areas under review, including processes, risks and controls, and being able to document the processes accurately and completely.
- Assisting Audit Project Manager in the development of an approach and testing strategy for assigned areas to ensure all key business risks and controls are evaluated.
- Completing audit test procedures, including maintaining appropriate testing documentation to support audit results.
- Identifying potential findings, drawing conclusions, developing recommendations noted from the review and communicating to the Audit Project Manager / Senior Audit Manager.
- Confirming all audit findings with management to ensure full understanding throughout and at the conclusion of the project by discussing process and control deficiencies, recommending corrective actions and other suggestions for improvements in operations and/or reductions in costs.
- Assisting in development of the formal findings and recommendations for inclusion in report to management.
- Participating in ad‑hoc projects, investigations and/or any other required activities including Sox 302 & 404 activities.
- As required, providing assistance to external auditors during their interim and annual reviews of the company.
- As a global resource, participating in audit assignments as required in any location.
- Advanced technical, analytical and problem solving skills.
- Excellent verbal and written communication skills.
- Interpersonal skills and the ability to interface and build professional relationships with management of the area under review within the company.
- The ability to build productive working relationships with peers both internally and externally.
- Knowledge and understanding of internal auditing standards and techniques as well as general accounting methods, principles and practices.
- Organizational, time management and multi-tasking skills.
- The ability to focus on details and perform all required functions timely and with accuracy.
- The ability to learn and develop a competency/understanding of Aon operations including policies and procedures and apply them to assignments.
- The ability to work independently and with initiative to complete audit assignments.
- Knowledge of agile auditing concepts.
- Knowledge of data analytics and visualization techniques.
- 2+ years of professional work experience within audit
- Bachelor's Degree in Accounting or Finance or comparable business degree. Professional designations/certifications, such as CPA or CIA are preferred.
- A competitive total rewards package, continuing education & training, and tremendous potential with a growing worldwide organization.
For positions in San Francisco and Los Angeles, we will consider for employment qualified applicants with arrest and conviction record in accordance with local Fair Chance ordinances.
Pay Transparency LawsThe salary range for this position (intended for U.S. applicants) is $80,000 - $92,000 annually. The actual salary will vary based on applicant's education, experience, skills, and abilities, as well as internal equity and alignment with market data. The salary may also be adjusted based on applicant's geographic location.
The salary range reflected is based on a primary work location of Chicago, Illinois. The actual salary may vary for applicants in a different geographic location.
This position is eligible to participate in one of Aon's annual incentive plans to receive an annual discretionary bonus in addition to base salary. The amount of any bonus varies and is subject to the terms and conditions of the applicable incentive plan.
Aon offers a comprehensive package of benefits for full-time and regular part-time colleagues, including, but not limited to: a 401(k) savings plan with employer contributions; an employee stock purchase plan;…
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