PayPal API Jobs

My PHP-based e-commerce back-office is already wired to the Mercado Libre API, yet the moment the access token expires the whole link goes down and I start getting “failed to connect to Mercado Libre API”. I have not attempted any troubleshooting so far. What I need you to do: • Review the current OAuth flow in the existing PHP codebase and update it so the token refreshes automatically before it expires. • Make sure the restored connection allows my local MySQL database to stay perfectly in sync with listings, inventory and orders on Mercado Libre. • Test the fix end-to-end so that product uploads, status updates and order retrieval all complete without errors. Acceptance will be based on: 1. Successful authenticated calls to Mercado Libre API from...

Senior Development Agency Needed — Real-Money Skill Gaming Platform Project Overview We are hiring a development agency, not individual freelancers, to build a real-money skill gaming platform based on a completed SRS, existing UI wireframes, an active GitHub repository, and existing payment/compliance providers. This platform is a full rebuild from a prior Unity implementation into a custom architecture with: • a React Native player app • web dashboards for Admin, Affiliate, and Customer Support • a server-authoritative real-time game engine • Plaid Identity / Auth / Transfer • PayPal integration • tournament systems, fraud controls, geo restrictions, and support tooling The platform is designed to support large-scale tournament play, multiple...

I need a specialist who can fast-track my merchant onboarding with Payu, RazorpayX, HoadaPay or a similar gateway that offers instant settlement, then wire the live APIs into my WordPress site so payments start flowing immediately. Here is what a successful engagement looks like: • Obtain gateway approval and live credentials, including activation of instant (T+0) settlement. • Set up the merchant dashboard and confirm that reports, refunds and webhook alerts all function correctly. • Integrate the gateway on my WordPress front end, pass test mode, switch to live and run a real transaction. • Deliver clean, well-commented code, store keys securely in wp-config and supply a brief hand-off guide or screen-recording. Acceptance is a live INR payment that lands ...

I own the existing site at and need it rebuilt under the new domain thepopuptournaments.com. The core concept stays the same—organising popup pickleball tournaments—but several features must be repaired or expanded while we keep only minor design tweaks in mind. Key deliverables • Round-robin engine: adjust the current match-making logic so every player meets any given opponent no more than twice during round-robin play. • Payments: integrate a Stripe credit-card checkout flow tied to each event registration. Players should be charged automatically once their spot is confirmed, with basic refund handling in the dashboard. • Email validation: block invalid or disposable email addresses at sign-up and during any profile edits, both client- and server-side. ...