Senior Internal Auditor

Senior Auditor

Company Description

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

Job Description

Audit Execution & Project Delivery

• Execute assigned audits in accordance with the annual risk-based audit plan and ASG methodology, promoting adherence to the Institute of Internal Auditors (IIA) Standards.
• Lead assigned audits or discrete audit workstreams under the supervision of an Audit Manager or Audit Lead.
• Participate in audit planning activities, including risk assessment, defining audit scope, and determining audit timing.
• Perform audit testing to maintain appropriate coverage of identified risks and controls.
• Support the Audit IT team, as required, with testing of IT General Controls (ITGCs) and application controls, under IT Audit guidance.
• Obtain and analyze financial and non-financial data, including extracting information independently from systems or through coordination with relevant teams.
• Ensure timely completion of audit work in line with established performance and quality standards.

Reporting & Issue Management

• Draft clear, concise, and evidence-based audit findings, including root cause analysis and risk impact.
• Assess the adequacy and practicality of management action plans.
• Contribute to the preparation of audit reports and presentation of results to management.
• Escalate significant risks, control deficiencies, or disagreements with management conclusions to Audit Managers in a timely and professional manner.

Advisory & Judgment

• Provide advisory support on finance-related processes, controls, and system issues as assigned.
• Apply professional skepticism and risk awareness to challenge audit scope, findings, and management responses, ensuring audit conclusions are meaningful and aligned to business risk.

Stakeholder Engagement & Collaboration

• Build and maintain effective working relationships with key stakeholders, including senior management, while maintaining independence and objectivity.
• Participate in audit opening, status, and closing meetings with auditees and management.
• Contribute to enterprise-wide ASG initiatives to share best practices, identify emerging risks, and continuously improve audit processes.

Coaching & Team Enablement

• Provide informal coaching, technical guidance, and on-the-job support to junior auditors and new team members.
• Act as a role model for audit quality, professionalism, and ASG values, fostering a collaborative, high-performing team environment.

 

Qualifications

• Bachelor’s degree in Accounting, Finance, Business Administration, or a related field.
• 3–5 years of relevant experience in internal audit, public accounting, or risk assurance, typically gained post‑qualification.
• Qualified Chartered Accountant (e.g., ACA, ACCA, CA), CPA, or Certified Internal Auditor (CIA); other relevant certifications, such as CISA, are highly desirable.
• Experience with SOX compliance related to financial controls is required; exposure to IT SOX controls (including ITGCs, application controls), and project accounting is desirable.
• Awareness of and ability to stay current with changes in accounting standards, audit standards, policies, and organizational structures.
• Ability to function effectively in different cultures and business environments.
• Willingness and ability to travel up to 20%, including international travel (valid passport required).

Additional Information

• Communication: Ability to communicate clearly and effectively with diverse audiences; fluency in English is required, and additional languages are desirable.
• Customer Focus: Ability to establish and maintain strong professional relationships and proactively enhance stakeholder experience.
• Attention to Detail & Quality: Meticulous approach to audit execution, with sound judgment and a focus on preventing and identifying errors or issues.
• Problem Solving: Ability to analyze moderate to complex issues, apply best practices and technical expertise, and recommend practical solutions.
• Judgment & Ethics: Demonstrates professional skepticism, ethical behavior, and appropriate escalation of issues.
• Adaptability & Team Enablement: Comfortable operating in evolving environments; supports team development through collaboration, coaching, and knowledge sharing.

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

 

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines. 

Experience Level

Senior Level