Build an internal trading desk platform — PostgreSQL + Retool + n8n + Telegram bot

We are a B2B trading company looking for an experienced developer to build an internal pricing platform from an existing, complete technical specification. The project must be delivered in 7 consecutive working days... (Budget: $1500 - $3000 USD, Jobs: AI Chatbot, AI Development, AI Model Development, Microsoft Access, n8n, PHP, PostgreSQL, Software Architecture)