Business Systems Engineer, Tax Technology

ABOUT THE ROLE As a Business Systems Engineer focused on Tax Technology, you will play a critical role in shaping Lyft's global tax technology architecture during a period of significant expansion. You will be responsible for owning the end-to-end configuration, maintenance, and optimization of Lyft's tax determination platform, as well as designing and maintaining integrations between tax systems and Oracle Fusion Cloud ERP. This is a high-impact opportunity to make a meaningful contribution to Lyft's finance and tax operations. WHAT YOU'LL DO - Own the end-to-end configuration, maintenance, and optimization of Lyft's tax determination platform (currently Vertex), including taxability rules, product mappings, jurisdiction configurations, and rate updates. - Evaluate and implement enhancements to the current tax technology stack to meet evolving global compliance requirements. - Design and maintain integrations between tax systems and Oracle Fusion Cloud ERP, ensuring accurate tax determination across procure-to-pay, order-to-cash, and intercompany flows. - Manage and optimize Vertex tax engine settings for rental and lease transactions, ensuring accurate tax determination based on rental length, car-specific surcharges, and drop-off location requirements. - Translate complex international tax requirements, including VAT, GST, and digital services taxes across Europe, APAC, and Latin America, into precise system configurations and taxability rules. - Own Lyft's e-invoicing compliance program across applicable jurisdictions, including design and maintenance of the technical architecture for generating, transmitting, and archiving government-compliant electronic invoices. - Partner with the Oracle and other internal Engineering teams to drive integration architecture decisions, resolve data flow issues, and ensure sales, rental and use tax and e-invoicing logic is correctly applied across ERP subledgers and boundary applications. - Monitor regulatory changes across active and emerging jurisdictions, including evolving EU ViDA (VAT in the Digital Age) mandates and country-specific e-invoicing rollouts, and proactively implement system updates ahead of compliance deadlines. - Lead troubleshooting and resolution of tax calculation errors, integration failures, and audit findings across the tax systems ecosystem. - Develop and maintain thorough documentation of tax configurations, integration designs, and control evidence to support internal audit and SOX compliance. - Provide expert guidance and training to Finance and Tax stakeholders on system capabilities, limitations, and best practices. - Actively contribute to Boundary Applications team processes and engineering culture through knowledge sharing and technical mentoring. WHAT YOU'LL NEED - Bachelor's degree in Computer Science, Information Systems, Finance, Accounting, or a related field. - 4+ years of experience in tax technology or financial systems engineering roles. - 3+ years of hands-on configuration experience with a major tax determination platform (Vertex strongly preferred; experience with Avalara, Thomson Reuters ONESOURCE, Sovos, or similar solutions also valued). - 3+ years of Oracle Fusion Cloud ERP experience with demonstrated understanding of tax integration points across AP, AR, and GL modules. - Proven experience configuring tax rules for multiple international jurisdictions, including VAT (EU/UK), GST (APAC), and/or US sales and use tax. - Experience with at least one full-cycle implementation of a tax engine integrated with Oracle ERP or a comparable enterprise financial system. - Hands-on experience implementing or operating e-invo