Internal Auditor (IT)

About the company

Dexcom is a global leader in continuous glucose monitoring technology and has spent more than 25 years building solutions that help people better manage their health. What started as a small company with a big ambition has grown into an organization focused on improving human health through personalized, actionable insights and biosensing technology. The company’s long-term goal is to keep expanding beyond diabetes care and become a leading consumer health technology business while continuing to support people with serious health conditions.

Dexcom is powered by people who value integrity, dependability, teamwork, and a bold, customer-focused mindset. The company has already affected millions of lives and aims to do much more. Its workplace emphasizes collaboration, innovation, and making a meaningful difference.

About the team

The internal audit group works in a supportive, inclusive environment where team members enjoy working together and contributing to the organization’s mission. This role is based at the Athenry office and supports Dexcom’s global internal audit function.

Role overview

As an Internal Auditor focused on IT, you will carry out Sarbanes-Oxley and operational audits for Dexcom’s technology environment. Reporting to the Global Senior Manager of Internal Audit (IT), you will work with internal and external auditors, partner across functions, and help strengthen controls, improve efficiency, and support risk-based decision-making.

Key responsibilities

• Lead and complete IT audits, including SOX IT general controls, IT application controls, and operational audits, with the goal of strengthening processes and identifying control improvements.
• Work alongside IT audit colleagues in other regions and with global financial audit teams on risk assessments, audit scope planning, and testing aligned to COSO and COBIT.
• Prepare clear walkthrough documents that accurately reflect process understanding, control design, and key risks.
• Carry out ITGC and ITAC testing, maintain well-supported workpapers, and conclude on control effectiveness within required timelines and with minimal review comments.
• Serve as a point of contact for process owners and external auditors during integrated financial statement audits.
• Record audit issues in the tracking system, recommend practical corrective actions, and monitor whether remediation is completed on time and delivers the intended outcome.
• Build constructive relationships with management and help strengthen awareness of internal controls across the business.
• Take on additional assignments or special projects as business needs change.
• Use data-focused methods to evaluate processes, technology dependencies, risks, and controls, and to shape audit procedures; prior experience using data analytics in audit is preferred.

What you need to succeed

• Strong organizational, time management, analytical, and communication abilities, with the flexibility to work independently or as part of a team.
• Practical knowledge of modern auditing standards and hands-on experience with risk assessment and ITGC/ITAC audit execution.
• Good understanding of IT systems, cybersecurity, and network infrastructure.
• Comfort using Microsoft Word, Excel, and PowerPoint, along with Visio or Lucidchart for process mapping and documentation.
• A commitment to continuous development through feedback, mentoring, performance review input, and maintaining CPE requirements.
• Willingness to collaborate across time zones with global audit, finance, business, and IT stakeholders.
• Ability to work in person at the Athenry office and live within commuting distance.
• A positive, adaptable approach for a fast-moving environment with changing priorities.

Experience and education

A bachelor’s degree in Computer Information Systems, Information Technology, or a related field is typically required. Professional qualifications such as CIA, CISA, or CPA are preferred, including candidates who are currently working toward one of these certifications. The role calls for 2 to 3 years of IT audit experience in a public accounting firm, with Big 4 experience considered an advantage.

Hands-on experience with some or all of the following systems and tools is also expected: Oracle EBS, Oracle Fusion, Oracle FCCS, data warehouses, ETL processes, OIC, and integration/logging tools.

Working arrangement

This is an onsite position based in Athenry, County Galway, Ireland. Travel requirements are low, at 0% to 5%.

What you will get

• A close-up view of Dexcom’s life-changing CGM technology and the community that supports it.
• A complete benefits package.
• Strong opportunities for growth in a global organization.
• Access to learning and career development programs, including tuition reimbursement where eligible.
• The chance to join an innovative company that is committed to employees, customers, and the communities it serves.

Additional information

Dexcom requests that staffing and recruiting agencies do not submit unsolicited resumes or applications. The company only accepts submissions from authorized agencies for specific requisitions. Unsolicited profiles sent to the talent acquisition team, employees, or any other company location will not be accepted, and Dexcom is not responsible for any related fees.