Built engineering infrastructure and end-to-end payment solutions for PayPal Complete Payments Platform, covering merchant onboarding, checkout, payment processing, subscriptions, and settlement workflows.

• Expanded merchant onboarding across marketsManaged Accounts V3 · 14 European countries

  Helped extend US-only onboarding APIs to 14 European countries, translating country- and entity-specific KYC/KYB requirements into fields, documents, and validation rules. Integrated automated eKYC, manual document collection, and account, payment capability, and limit updates while preserving US backward compatibility.

• Built payment lifecycle workflows around Orders V2Orders V2 · Payment processing

  Covered CAPTURE/AUTHORIZE payment flows, refunds, fixed and rolling reserves, reserve releases, and settlement workflows.

• Extended API automation into buyer-facing Checkout ExperienceXO · Selenium

  Built automation across API and UI layers for login, payment selection, order summary, buyer approval, and payment completion.

• Developed custom webhook configuration for SubscriptionsSubscriptions · REST Apps · Webhooks

  Enabled merchants to select an existing REST App for subscription plans, implemented configuration persistence, retrieval, and updates, and integrated with existing webhook notifications.

• Built an AI-assisted subscription workflow platform and shared engineering infrastructureLLM workflows · Jenkins

  Combined prompt engineering, payment expertise, and reusable workflows to enable natural-language E2E execution and detect cross-service payment regressions.

Role ended due to company-wide restructuring. Context ↗

• Built real-time ETL pipelines for store and order event streamsFlink · Kafka · Redis

  Implemented deduplication, joins, and risk-control rules for real-time anti-scalping workflows.

• Built offline data-sync pipelines (HDFS → MySQL / FTP)Spring Boot · Hadoop

  Added Grafana-based monitoring and alerting to improve data-job observability.