The Business Unit Actuary will be responsible for leading IBNR reserve analyses for assigned P C reinsurance lines, including assumption selection, documentation, communication of results, and support for financial, (GAAP and statutory), and management reporting. The role will require regular interaction with underwriting, claims, finance, IT, audit, and management stakeholders, and will include responsibilities for reserving process improvements, actuarial systems, data validation, and special studies. The following are the primary accountabilities of the position: L ead reserving analyses for assigned P C reinsurance lines, including IBNR estimation, reserve reviews, experience analysis, assumption selection, documentation, and communication of results to underwriting, claims, finance, and management. Provide key contributions to reserving system and process improvement initiatives, including involvement in corporate initiatives such as financial and accounting system development. Lead the design, development, and ongoing enhancement of reserving dashboards used to monitor key actuarial metrics, including IBNR, loss development, Actual vs. Expected, selected and indicated loss ratios, ultimate loss estimates, premium trends, and reserve movements across assigned lines of business. Provide technical and analytical leadership through advanced use of Excel, Access, SQL, Power BI, VBA, R/Python, and other tools to improve actuarial processes, reporting, automation, and analysis. This includes the application of emerging AI technologies. Partner with IT, Finance, Internal Audit, external auditors, and business stakeholders to resolve data quality issues, support audit/control requirements, and ensure reserving processes are accurate, repeatable, and well-documented.