PHP Developer with Proven Experience Integrating GCash (via Xendit) + Stripe Payment Flows - Contract to Hire

Project OverviewWe are looking for an experienced developer who has successfully implemented GCash payments (via Xendit) and understands how to integrate it alongside Stripe within a unified payment flow. Our current team has been unable to complete the integration, so we need someone with real-world, hands-on experience implementing this exact setup or a very similar one. You will work with an existing PHP backend and JS frontend. Your task is to implement a reliable, production-ready GCash flow that works smoothly with our existing Stripe payment process.What We Need Developed1. GCash via Xendit IntegrationImplement GCash payments using Xendit’s eWallet Charges API. Redirect users to Xendit’s hosted payment page. Handle success/failure callbacks. Implement secure Xendit webhook processing (validate x-callback-token). Ensure correct currency conversion (centavos ↔ pesos). 2. Works AlongsideOur Existing Stripe FlowWe currently use Stripe for:Card paymentsSubscription logicOptional revenue reportingWe need GCash added without breaking or changing our Stripe setup.3. Optionally (Nice to Have)If you have experience with it:Unifying GCash inside Stripe’s Payment Element using custom payment methods (cpmt_…). Creating Stripe invoices marked paid_out_of_band for reporting accuracy. Not required but highly valuable. Tech Stack You Must Be Comfortable WithPHP (Laravel or custom MVC — we’ll provide details)JavaScript / Stripe.jsStripe Payment Intents + Payment ElementXendit eWallet APIs, especially GCashWebhooks & secure signature/token verificationJSON API designExperience RequiredPlease apply only if you have experience with ALL of the following:✔ Implemented GCash using Xendit API✔ Integrated multiple payment providers in a single checkout flow✔ Strong PHP backend development✔ Strong Stripe experience (Payment Intent flow, webhooks)✔ Ability to debug payment issues and test end‑to‑end flowsBonus: Experience adding custom payment methods inside Stripe's Payment Element.DeliverablesFully working GCash payment flow in production. Backend PHP endpoints for GCash session creation + webhook handling. Frontend integration (Stripe + GCash branching logic). Clear documentation for our internal team. Brief handover call if needed. Apply tot his job