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Lead development and execution of a risk-based internal audit plan, provide advisory services on controls, coordinate with risk and compliance functions, report to Audit Committee, present findings to senior management, and mature the IA function and team.

Prepare and manage federal, state, and local tax compliance for corporate and insurance entities, including returns, estimates, nexus and indirect taxes, tax provisions, journal entries, reconciliations, audit responses, planning support, modeling, and process improvements. Collaborate with Finance and business teams and support GAAP and statutory tax reporting and forecasting.

Lead Oscar's internal audit function by developing and executing a risk-based audit plan, partnering with senior management and risk functions, producing audit reports and Audit Committee materials, advising on controls and risks, training the IA team to IIA standards, and supporting enterprise risk assessments.

Prepare federal, state, and local corporate tax returns and estimates; perform nexus and indirect tax analysis; maintain compliance calendar; prepare tax journal entries, reconciliations, GAAP and Statutory tax provisions, and tax modeling; respond to audits and notices; support tax planning, projects, and process improvements across Finance and the business.

Lead development and execution of a risk-based internal audit plan, advise business partners on controls and risks, coordinate with risk functions (Security GRC, Privacy, Compliance, SOX), produce audit reports and Audit Committee materials, present findings to senior management, develop IA team training and ensure IIA standards compliance.

Lead development and execution of a risk-based internal audit program, produce audit reports, advise business partners on controls and risks, coordinate with risk functions, support Audit Committee reporting, and develop IA team training to meet IIA standards.

Prepare federal, state, and local tax returns, estimates, and payments for the holding company and insurance subsidiaries; perform state nexus and indirect tax work; maintain tax compliance calendar; prepare tax journal entries, reconciliations, provisions, and modeling; support audits, notices, tax projects, process improvements, and cross-functional tax planning.

Prepare federal, state, and local tax returns, estimates, and payments for corporate and insurance entities; perform tax provision and reconciliations; support tax planning, nexus and indirect tax analyses, audit responses, forecasting, and process improvements; collaborate with finance and business teams on tax projects.

Develops market-level strategies for growth, retention, competitive positioning, expansion, and portfolio optimization across health insurance markets. Leads market-entry analyses, business cases, strategic initiatives, and multi-year planning while evaluating competitive, provider, regulatory, and financial dynamics. Translates complex market intelligence into executive-ready recommendations and partners with cross-functional leaders to support strategic decision-making and execution.

Design, build, and maintain production data pipelines, statistical/ML models, and analytical systems for clinical risk adjustment. Partner with Actuarial and Risk Adjustment teams to automate manual workflows, own projects end-to-end, validate outputs, iterate after launch, and mentor junior data scientists.