Soundar Vellingiri

Growth Engineering: Designed and executed onboarding roadmap with 20+ A/B tests, optimizing onboarding funnel and boosting freemium-to-paid conversions. AI-Driven Onboarding: Led development of a personalized AI onboarding engine that auto-provisions teams, channels, and configurations based on user intent, dramatically reducing time-to-value. Infrastructure Reliability: Architected improvements to critical Sign-in and Onboarding APIs, enhancing SLAs and reducing latency for millions of daily active users.

Growth Engineering (Sign-in & Onboarding): Designed and executed a rigorous onboarding road map with 20+ A/B tests, optimizing the onboarding funnel and driving improvements in user retention and free-to-paid conversion. AI‑driven Onboarding: Led the development of a personalized onboarding engine that automatically provisions teams, channels, and configurations based on user intent, reducing time-to-value for new organizations. Infrastructure Reliability: Implemented improvements for critical Sign-in and Onboarding APIs, boosting service level objectives and reducing latency for millions of daily active users. Multi-tenant Payment Gateway: Architected a sandboxed payment gateway framework using Groovy, enabling runtime control and rapid integration of third‑party gateways (e.g., Stripe). Global Expansion & Ops: Implemented gateway-driven capabilities to launch Mobile Carrier Billing in Japan and led end-to-end accounting integration for the Amazon.nl marketplace. Operational Excel

Healthcare Payments (Amazon Care): Led the payments infrastructure launch for Amazon’s healthcare business. Designed a HIPAA‑compliant anonymous payment processing backend to securely de-identify sensitive patient health data from Amazon’s core financial systems. Revenue & Platform: Engineered a dynamic checkout/payment preference engine that reduced click friction, contributing to $350M+ in annual revenue uplift. System Architecture: Built a multi-tenant, sandboxed payments gateway framework in Groovy to enable runtime control and rapid integration of third‑party gateways (e.g., Stripe). Global Expansion: Drove Mobile Carrier Billing in Japan and end-to-end accounting integration for Amazon.nl; enabled global expansion with compliant financial flows. Operational Excellence & Leadership: Accelerated new marketplace launches by virtualization of fulfillment constraints and helped hire 10+ engineers.