Next.js Developer to Replace Stripe with Flutterwave & Integrate Meta Pixel / Conversions API

We are looking for an experienced Next.js / React developer to update our react framework website hosted on Vercel. We need to swap out our current payment processor. Stripe, and set up comprehensive Meta (Facebook) tracking for ad campaigns. (meta pixel) for when we run our meta ads soon. We are based in Gabon, so we can't have Stripe, but rather Flutterwave. Key Responsibilities: Payment Integration: Remove the existing Stripe integration and integrate Flutterwave to process payments smoothly (including handling webhooks and post-payment redirection). Meta Tracking Setup: Fully integrate Meta Pixel and Meta Conversions API (CAPI) into our Next.js application to track key events (e.g., PageViews, InitiateCheckout, Purchase/Conversion). Testing & Deployment: Ensure smooth end-to-end payment flows and tracking accuracy before deploying to production on Vercel. Requirements: Proven experience with Next.js, React, and Vercel deployment. Hands-on experience integrating Flutterwave API & webhooks. Deep understanding of Meta Pixel, Conversions API (CAPI), and event tracking in single-page/SSR React applications. Strong focus on clean code, security, and error handling.