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 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: 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 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-invoicing solutions in at least one country with a mandatory government reporting framework; working knowledge of both clearance model (real-time tax authority validation) and post-audit model (periodic structured reporting) approaches, and the technical differences between them * Working knowledge of at least two of the following frameworks: EU VAT in the Digital Age (ViDA), Italy FatturaPA, Spain SII, UK Making Tax Digital (MTD), SAF-T (Poland, Portugal, Norway or equivalent), India GST e-invoicing, Mexico CFDI, or Brazil NF-e/NFS-e * Strong understanding of procure-to-pay and order-to-cash financial processes and how tax determination intersects with each * Experience in API development or system integrations, with ability to review and contribute to integration designs * Strong analytical skills with the ability to translate tax law and business requirements into technical system configurations * Experience in a SOX-regulated environment and familiarity with ITGC controls around financial systems * Excellent communication skills; comfortable presenting technical designs and compliance impacts to both technical teams and non-technical finance stakeholders * Experience with boundary applications such as Concur, Zip HQ, Gtreasury, or UiPath is a plus BENEFITS: * Extended health and dental coverage options, along with life insurance and disability benefits * Mental health benefits * Family building benefits * Child care and pet benefits * Access to a Lyft funded Health Care Savings Account * RRSP plan with company match to help save for your future * In addition to provincial observed holidays, salaried team members are covered under Lyft's flexible paid time off policy. The policy allows team members to take off as much time as they need (with manager approval). Hourly team members get 15 days paid time off, with an additional day for each year of service  * Lyft is proud to support new parents with 18 weeks of paid time off, designed as a top-up plan to complement provincial programs. Biological, adoptive, and foster parents are all eligible. * Subsidized commuter benefits and Lyft ride credits Lyft is committed to creating an inclusive workforce that fosters belonging. Lyft believes that every person has a right to equal employment opportunities without discrimination because of race, ancestry, place of origin, colour, ethnic origin, citizenship, creed, sex, sexual orientation, gender identity, gender expression, age, marital status, family status, disability, pardoned record of offences, or any other basis protected by applicable law or by Company policy. Lyft also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.  Accommodation for persons with disabilities will be provided upon request in accordance with applicable law during the application and hiring process. Please contact your recruiter if you wish to make such a request. Lyft highly values having employees working in-office to foster a collaborative work environment and company culture. This role will be in-office on a hybrid schedule — Team Members will be expected to work in the office at least 3 days per week, including on Mondays, Wednesdays, and Thursdays. Lyft considers working in the office at least 3 days per week to be an essential function of this hybrid role. Your recruiter can share more information about the various in-office perks Lyft offers. Additionally, hybrid roles have the flexibility to work from anywhere for up to 4 weeks per year. #Hybrid The expected base pay range for this position in the Toronto area is CAD $102,000 - CAD $127,500, not inclusive of potential equity offering, bonus or benefits. Salary ranges are dependent on a variety of factors, including qualifications, experience and geographic location. Your recruiter can share more information about the salary range specific to your working location and other factors during the hiring process. Lyft may use artificial intelligence to screen applicants, however, Lyft employees make the ultimate selection and hiring decisions. This job fills an existing vacancy.