I am looking for an experienced developer or team to build a complete sports betting exchange platform with full casino and live casino integration. This is a full-featured system (not MVP), so I need a scalable, secure, and high-performance solution. Core Features: Sports exchange system (Back & Lay betting) Real-time betting market with live odds updates Matching engine and bet settlement system Casino & Live Casino: Full casino games integration (slots, table games) Live casino (real-time dealer games via API) User System: User registration & login Account management Betting history Wallet & Payment: Wallet system Deposit & withdrawal: bKash Nagad Rocket Bank transfer Bonus System: Deposit bonus (2%–5% adjustable) First deposit bonus (100%) Turnover / wagering bonus Ranking System: Elite I–V, Pro, Expert, Master, Grandmaster, Legend, Mythic Other Features: Affiliate/referral system 24/7 live chat Multi-language (Bangla & English) Admin Panel: User management Bet & market control Payment management Bonus & ranking control Requirements: Experience with betting exchange (Back/Lay) Casino API integration experience Real-time system experience Please include: Development plan Timeline Cost Demo or past work