I need a full-stack developer to build a Diamond-style betting exchange website that plugs directly into the Betfair API. The heart of the platform is real-time betting, so every architectural and design choice must keep latency to an absolute minimum and guarantee rock-solid stability when traffic spikes. Core real-time features I must see live on staging before sign-off: • Live odds updates pushed instantly to every active market • Instant bet confirmations that appear the moment a wager is matched • Embedded live match streaming so users never leave the exchange while betting While football, horse racing and basketball are obvious early markets, the codebase should stay modular so I can add further sports or even non-sport events later without rewriting core logic. What I expect you to deliver: • Responsive web interface styled in my Diamond branding • Secure user account layer (registration, KYC hooks, wallet) even though the priority is real-time betting • Complete integration with Betfair’s API for odds, bet placement, and market settlement • Admin panel for market creation, liquidity monitoring and basic reporting • All build scripts, database schemas and clear README so another dev can spin the system up from source • Source code handed over at each agreed milestone and in a clean, well-documented state Tech stack is your call as long as you justify it against performance and maintainability targets, but WebSockets, a modern JS framework (React, Vue or similar), and a scalable backend (Node, Go, or equivalent) make sense. Hosting can stay local during development; we’ll containerise before production. Propose a realistic timeline that shows you understand exchange-grade latency challenges, and highlight any previous work with betting APIs or high-frequency real-time apps so I can gauge fit quickly.