Business Systems Engineer, Tax Technology

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. Lyft connects people to transportation to change the way we live and get around our communities.

Lyft’s engineering team is growing rapidly, and we are looking for Technical Program Managers to help us scale. Come be part of a new team at Lyft focused on enabling and empowering engineering teams to deliver at scale. The Finance Technology team is seeking a Business Systems Engineer focused on Tax Technology to join our Boundary Applications team.

In this role, you will serve as the primary owner of our tax determination and compliance systems, working at the intersection of tax policy, system architecture, and Oracle Fusion Cloud ERP integration. You will partner closely with our Oracle Engineering team and collaborate with stakeholders across Tax, Finance, Legal, and Procurement to ensure Lyft's tax systems are accurate, scalable, and audit-ready as we grow internationally. This is a high-impact opportunity to shape our global tax technology architecture during a critical period of expansion.

Responsibilities

: 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

, including assessing alternative or complementary solutions where gaps exist 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

Translate complex international tax

, 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: design and maintain the technical architecture for generating, transmitting, and archiving government-compliant electronic invoices, including clearance model integrations (where invoices must be validated by a tax authority in real time before issuance) and post-audit model reporting (e.g., SAF-T, MTD in the UK, Italy, and equivalent frameworks in APAC and LatAm) Partner with the Oracle and other internal Engineering team and 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 Experience: 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