Scalable Outbound Email System Development

I am looking for an experienced automation developer to build a scalable outbound email system for my company. The system needs to handle lead imports, automated email sequences, reply detection, lead status tracking, follow-ups, CRM updates, and handoff of interested prospects to a salesperson... (Budget: $1500 - $3000 USD, Jobs: API, Automation, CRM, Email Marketing, Java, PHP, Software Architecture, Workflow Automation)