Senior Manager, Technical Accounting

At Iron Mountain we know that work, when done well, makes a positive impact for our customers, our employees, and our planet. That’s why we need smart, committed people to join us. Whether you’re looking to start your career or make a change, talk to us and see how you can elevate the power of your work at Iron Mountain.

We provide expert, sustainable solutions in records and information management, digital transformation services, data centers, asset lifecycle management, and fine art storage, handling, and logistics. We proudly partner every day with our 225,000 customers around the world to preserve their invaluable artifacts, extract more from their inventory, and protect their data privacy in innovative and socially responsible ways.

Are you curious about being part of our growth story while evolving your skills in a culture that will welcome your unique contributions? If so, let's start the conversation.

Iron Mountain is seeking a dynamic Senior Manager, Technical Accounting to join our Global Controllership team. In this role, you will be responsible for leading the company's interpretation, application, and documentation of complex US GAAP. You will serve as a primary resource for emerging technical accounting issues across all corporate functions and core/evolving businesses, directly supporting the company's financial reporting process.

The Global Controllership team works closely with Regional Controllership, Accounting teams, and external auditors to maintain the quality and consistency of accounting practices and policies across all business units.

In this role, you will:

• Serve as a key member of the Global Controllership team, acting as a primary resource for identifying, interpreting, and driving resolution of emerging technical accounting issues across the Company’s corporate functions (including real estate, HR, IT, finance, legal, and others) as well as our core and developing businesses.

• Support the application of a broad range of US GAAP standards and interpretations—such as business combinations, leases, PP&E, segment reporting, exit and disposal activities, contingencies, stock-based compensation, derivatives, software, and income taxes—and document conclusions in detailed technical accounting memorandums shared with internal stakeholders and external auditors.

• Ensure consistency and alignment in accounting practices and policy application across all business units.

• Manage key aspects of our relationship with Deloitte & Touche LLP, including supporting audit planning and scope, tracking fees for Audit Committee preapproval and proxy disclosure, coordinating quarterly review and annual audit meetings, and driving issue resolution. You will work closely with Regional Controllership & Accounting teams and our finance shared-services Outsource Provider to support the global audit of the Company and its consolidated subsidiaries.

• Serve as a liaison to designated centers of excellence, ensuring that material issues impacting the Company’s consolidated financial reporting are identified early and resolved promptly.

• Take ownership of various ad‑hoc monthly, quarterly, semi‑annual, and annual projects that help maintain the quality, consistency, and rigor of our accounting practices, policies, judgments, assumptions, and review protocols across business units.

• Partnering with Investor Relations, you will ensure alignment between GAAP and non‑GAAP reporting across SEC filings (Forms 10‑Q and 10‑K), supplemental reporting, and other investor‑facing materials.

• Support Regional Controllership & Accounting teams and the Outsource Provider in assessing issues identified at the country or business‑unit level and determining whether they have broader implications across the Group.

• Support the Company’s financial reporting process for quarterly and annual SEC filings, including Forms 10‑Q and 10‑K.

• Provide SEC reporting and technical accounting leadership to the Treasury function on equity and debt offerings, including reviewing offering documents and supporting due‑diligence and auditor comfort letter processes. This support may also extend to regional and country‑level activities,…