Senior Python Engineer For Automated Trading Market

I'm looking for a senior Python engineer to become my long-term technical partner in building an automated trading platform for sports prediction markets. Over the past several months I've built a working MVP using AI coding tools (Claude/Codex). The system is already live and profitable for straight markets. Rather than continuing to extend AI-generated code, I'm looking for an experienced engineer to audit the existing platform, improve its architecture, and build the next generation of the system. This is not a simple feature implementation. I'm looking for someone who enjoys building trading infrastructure, real-time systems, and scalable backend software. Please share a Loom video demonstrating a trading application you directly built. Walk through the UI, backend architecture, API integrations, real-time data flow, and explain which parts you personally implemented. EDT working hours are preferred. Please also include your availability and a Loom link with your application.