Associate Director, International Tax

Alnylam Pharmaceuticals•Cambridge, MA

3d•$170,000 - $230,000•Hybrid

About The Position

We are seeking a strategic and experienced Associate Director of International Tax to be a key partner in global tax planning, compliance, and reporting across our multinational operations. This role will serve as a key advisor to senior leadership, ensuring alignment of tax strategies with business objectives while maintaining compliance with evolving international tax regulations. The ideal candidate will bring deep expertise in cross-border taxation and global tax structuring, along with strong leadership and partnership skills.

Requirements

Bachelor’s degree in accounting, finance, or related field (Master’s in Tax preferred)
8-10+ years of international tax experience in public accounting and/or a multinational organization
Deep expertise in U.S. international tax (GILTI, FDII, Subpart F, BEAT) and familiarity with OECD Pillar Two
Proven ability to build and leverage tax models for forecasting and scenario analysis

Nice To Haves

Experience with tax provision (ASC 740), global compliance, and reporting processes, preferred
Experience with OECD Pillar Two implementation preferred
Experience operating in a publicly traded or high-growth environment preferred
Familiarity with ERP and tax technology tools (e.g., SAP, Oracle, OneSource) preferred
CPA, JD, MST, or equivalent certification preferred

Responsibilities

Lead global tax strategy and planning to optimize effective tax rate and cash tax position
Provide technical expertise on U.S. international tax matters (GILTI, FDII, Subpart F, BEAT, OECD Pillar Two)
Support M&A, restructurings, and global expansion through tax planning and modeling
Ensure accurate reporting, including CFC filings, Forms 5471/8858, and country-by-country reporting
Develop and maintain tax models to forecast effective tax rates, cash taxes, and impacts of structural or legislative changes
Deliver data-driven insights to support strategic decision-making
Identify and manage global tax risks, maintain internal controls, and support audits and tax authority inquiries
Partner cross-functionally with Finance, Treasury, Legal, and executive leadership to support business initiatives and market expansion
Support global transfer pricing strategy, including policies, intercompany agreements, and audit defense
Lead external advisor relationships, drive process improvements, and leverage technology to scale tax operations
Support international tax compliance and global tax provision (ASC 740 / IFRS), partnering with internal teams and external advisors, as needed