This role is a hybrid opportunity, requiring a minimum of one day per week on-site at any of the following LGC locations: Milford, MA; Alexandria, MN; Gaithersburg, MD; Middleton, WI; Traverse City, MI; Cumberland Foreside, ME; or Manchester, NH.The Senior Accountant is a U.S.-focused role responsible for managing Canada and U.S. indirect tax compliance, reporting, and advisory activities. The role supports strategic tax planning, risk management, and process optimization across the US legal entities, and collaborates closely with finance teams.Key Duties & Responsibilities:Tax Strategy & ComplianceLead the end-to-end preparation and review of Canadian (GST/HST, PST, QST) and US Sales & Use tax returns and Personal Property renditions, ensuring accurate and timely filings.Manage indirect tax accounting and reconciliations, including overseeing tax liability accounts, month-end accruals, and true-up analysis to ensure financial statement accuracy.Monitor indirect tax legislative changes to assess and communicate impacts on the company’s tax profile.Audit & Risk ManagementOversee and lead indirect tax audits, serving as the primary point of contact for tax authorities and managing the retrieval of transactional data and documentation.Perform regular nexus reviews and taxability studies to identify and mitigate potential exposure across new and existing jurisdictions.Maintain comprehensive support for tax positions, including exemption certificate management and audit-ready files.Tax Planning & AdvisoryProvide strategic indirect tax advice on business initiatives, including product launches, M&A due diligence, and intercompany transactions.Determine taxability for new products and services, ensuring correct tax mappings are applied within ERP systems.Partner with non-tax stakeholders (Procurement, Sales, and IT) to embed indirect tax requirements into business processes and contract negotiations.Process Optimization & TechnologyIdentify and implement process improvements to enhance the efficiency and accuracy of indirect tax data collection and reporting.Drive automation and system enhancements, leading the integration of tax engines (e.g., Vertex) with ERP systems (e.g., SAP or IFS).