I need a developer who can connect to the Betfair Exchange API and automatically place bets on horse-racing markets. My API key and account are ready; what’s missing is the code that reliably logs in, pulls the latest horse-racing markets, and submits bets hands-free according to simple staking rules I’ll supply. Scope of work • Integrate with Betfair’s NG API for secure authentication and session keep-alive. • Retrieve upcoming horse-racing markets, odds, and runner details. • Accept my staking logic from a lightweight input (CSV, JSON, or flat file). • Place BACK or LAY bets automatically at Starting Price or live odds. • Respect Betfair rate limits, handle API errors, and retry elegantly. • Record every request, response, and matched bet in a log or database for audit. • Provide a concise read-me plus sample config so I can run the bot on Windows or a small Linux VPS (Python, Node, or C#—whichever you prefer). Deliverables 1. Well-commented source code. 2. Setup guide showing where to insert API credentials. 3. Proof of concept (screenshots or short clip) of a successful bet in the Betfair sandbox. The solution must comply with Betfair terms, remain extensible for future football or tennis markets, and be straightforward for me to maintain. Experience with Betfair or similar exchange APIs is highly valued; please highlight any live projects you have shipped. Betfair requires you to open your own account to prove 1. That your Country is accepted for this job 2. That they can have your work tested via their SANDBOX as that is the only way we can proceed.