My SaaS platform https://myproduct.co.il/ already accepts PayPal, but everything is triggered manually in the back office. I want full payment automation so that every user action—whether they start a one-time purchase or a renewable subscription—immediately moves through PayPal without staff intervention and returns clear status updates to the app. Scope of work • Hook my existing checkout flow to the PayPal REST API so one-time payments complete instantly and post back to our database. • Add subscription logic: plan creation, recurring billing, automatic renewals, and graceful handling of failed or cancelled payments. • Set up IPN / webhooks for real-time payment confirmations, refunds, and chargeback notifications. • Store and surface transaction data in our admin panel so support can quickly verify payment history. • Keep the current UI intact; changes should be invisible to users except for smoother, faster processing. Acceptance criteria 1. A new user can complete a one-time purchase and is automatically redirected to their activated product page. 2. A subscriber is charged on schedule, and their access extends without manual steps. 3. Cancellations, refunds, or payment failures instantly update the user’s status in the database. 4. All calls comply with PayPal’s latest security requirements and pass sandbox then live testing. Tech stack note: the site is built with PHP (Laravel) and MySQL; feel free to suggest libraries or SDKs that speed things up while keeping the codebase clean. If you have solid, demonstrable PayPal automation experience, I’m ready to move quickly—please outline your approach and estimated timeline.