Trade copier for combine futures

We are seeking an experienced software developer to build a professional-grade, low-latency futures trade copier for trading combine and prop firm accounts. The platform must connect directly to trading APIs such as Rithmic and be designed to copy trades from one master account to multiple follower accounts with speed, accuracy, and reliability. The ideal developer will have strong experience with C#/.NET, asynchronous programming, multi-threaded systems, real-time order routing, futures trading, and financial APIs. The copier must support market, limit, stop, stop-market, bracket, OCO, partial-fill, scale-in, scale-out, and close-position orders while accurately synchronizing entries, exits, stop losses, and profit targets across accounts. The system should be optimized for extremely low internal latency, ideally under 10 milliseconds when network and API conditions allow, and must include automatic reconnection, heartbeat monitoring, connection health checks, duplicate-order protection, retry logic, order-state synchronization, detailed logging, and emergency flatten controls. It should support at least 100 follower accounts and include configurable risk controls such as contract multipliers, maximum position size, daily loss limits, maximum contracts, and individual account enable or disable settings. The finished application should have a modern dark-themed dashboard showing account connections, trade activity, copier status, errors, latency measurements, and risk settings. Secure credential storage, encrypted configuration files, clean source code, documentation, installation instructions, testing, and a post-delivery bug-fix period are required. Applicants should provide examples of previous trading software, relevant Rithmic or brokerage API experience, an estimated timeline, project cost, and links to a portfolio or GitHub account.