I’m building an online platform focused exclusively on live, in-play wagering. The site has to display changing odds in real time, accept rapid bet placement, and settle outcomes automatically the moment official data updates. A clean, responsive interface is essential so users on desktop and mobile can navigate markets without page reloads. Core needs • Real-time odds feed integration (API of your choice—open to your recommendation) • Scalable backend that records every stake, calculates potential payouts instantly, and writes results to a tamper-proof ledger • Admin console where I can create events, suspend markets, and view financial reports on demand • Player account system with flexible authentication: I’m happy to start with email/password but will entertain social or two-factor options if you can map out the extra effort involved • PCI-compliant payment gateway integration for deposits, withdrawals, and promo credit handling • Rigorous security: encrypted traffic end-to-end, rate-limiting, bot protection, and audit logging • Deployment script or Docker setup so I can reproduce the environment on a fresh server Deliverables 1. Source code for frontend, backend, and admin panel 2. Database schema with migration files 3. API documentation (endpoints, sample requests, response codes) 4. Brief video or screen-share walkthrough demonstrating major flows—user registers, places a live bet, and the system settles it 5. Installation guide with prerequisites and step-by-step commands Acceptance criteria – Odds refresh no slower than one update per second on a 10 Mbps connection – Bet slip persists and confirms under 500 ms round-trip – All high-risk actions logged with timestamp, IP, and user ID – Unit and integration tests covering at least 80 % of critical paths Preferred tech stacks are Node/TypeScript + React or PHP/Laravel, but I’m flexible if you justify an alternative that meets the performance targets. Let me know which external odds feeds and payment providers you’d like to implement, a rough timeline, and any previous live-betting work you can reference.