Principal Software Engineer, Last Mile Payments

Principal Software Engineer, Last Mile PaymentsAmazon’s global fulfillment network ships millions of packages worldwide using 3rd party vendors that employ millions of drivers worldwide. Last Mile Payments system is responsible to disburse billions of dollars in payments to these drivers on a recurring cadence across 20+ Geos. These payments are processed using a large-scale distributed system handling millions of transactions and disbursing billions of dollars worldwide addressing Geo specific nuances and maintaining local financial compliance. We have a goal to eliminate tech debt of this platform through multi-tenant architecture, increase platform adoption through onboarding simplification. We plan to increase payment automation rate from 97.5% to 99.5%, improve controllership risk and MM$ cost savings, increase the time payment rate from 99.8 to 99.99% and improve payment accuracy by reducing disputes from 15% to 2% for all types of payments thereby improving customer experience.As a Principal Software Engineer on the Payments team, you will make key architectural design decisions that will have a large impact on these underlying systems and effect change on a critical piece of Amazon logistics. The software you will own in this role will vary from highly scaled backend web services to full-stack web applications, as well as GenAI driven features like agents to resolve disputes, aid approvals for financial claims etc. that reduce payment friction for our drivers and internal operators working. You will actively influence the major technical decision made along the way. The decisions you will make will be pivotal to improving scalability, efficiency, and lowering the cost to serve. You will also have the opportunity to innovate new experiences for drivers, working on full-stack codebases that directly impact the end-to-end driver experience. You will be a hands‑on practitioner on services that power payment experiences for millions of drivers across 20+ Geos, and work on platform features that impact multiple tech teams across payments org. You will be expected to partner with 10+ teams in cross VP orgs. You will drive the adoption of GenAI tools across the organization as well as lead the technical vision for agentic tools, helping inform the long‑term product vision. As the primary PE for our space, you will be the most senior engineer to a group of 40+ SDEs, and you will actively contribute to their career growth and mentor other junior engineers. You will also continue to raise the bar for our operational excellence, which on average is excellent at less than 6 pages per month for the org. You will take action to ensure that our software continues to scale well during peak events and that we operate on a strategy that effectively manages our tech debt over time.About the teamLast Mile payments team owns a self‑invoicing payments platform for Last Mile business; logistics offering for Amazon. Essentially, this is a payroll system for Last Mile vendors disbursing billions of dollars every month. This platform is present in 20+ Geos supporting Amazon deliveries. This system comprises of 5 focus areas 1) Pricing team owns a price management platform used by internal operators to manage pricing plans that powers payment experience for DSPs. Their focus is to simplify price management across various programs, building system controls/approvals in accordance with SOX, reducing controllership risks by removing manual intervention for accurate pricing experience for the drivers. 2) Payee experience owns the charter of building best in class payee experience for DPs/DSPs. This team owns full stack suite of applications, powering the earnings view experience for Delivery providers (DPs) and invoicing experience for Delivery Service Providers (DSPs). They deal with the challenge of building simplified, easy to follow earnings experience across mobile/web platforms across multiple Geos. In addition, they own a rule management platform that ensures payment changes are routed through right level of approvals in compliance with SOX and S&TP policies. 3) Payment processing team is responsible for accurate and timely payments (On time SLA – 99.90%) to the drivers. This team builds solutions for payment computation, invoice generation, tax calculation, disbursement of payments and innovation at the speed of payments. They also own a tips platform which is responsible for accurate and timely calculation and disbursement of tips. 4) Ingestion/Onboarding team focuses on building unified payments onboarding flow for driver pool across multiple tenants, simplifying onboarding time for new Geos/tenants and building region‑specific solutions like e‑invoicing. They also own building a centralized ingestion solution for the payments platform 5) Hawk Team is a vertical pillar which focuses on payment data quality using ML based solutions.Preferred QualificationsExperience with ML and working with science teamsE2E and integration testing patterns, and code qualityCybersecurityNoSQL or NewSQL storage solutionsFrontend developmentAny finance domain experience is a plusOur inclusive culture empowers Amazonians to deliver the best results for our customers. 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