Senior Full-Stack Engineer (AI + SaaS Automation) – Build an AI-Powered Real Estate Operating System
UpworkUSNot specifiedexpertScore: 67
AI Agent DevelopmentAI BotAPI DevelopmentChatGPT API IntegrationNode.jsPythonArtificial IntelligenceJavaScriptAPI
We are building WholesaleOS™, a fully automated AI-powered real estate wholesaling operating system.
This is not a basic CRM automation job.
We are building:
AI Lead Manager Agent
AI Acquisitions Agent
AI Follow-Up Agent
Voice AI integration
SMS AI orchestration
Dual pipeline CRM (Acquisition + Disposition)
Marketing attribution engine
Real-time KPI command center dashboard
GHL + Twilio + Meta integrations
The goal is to create a near fully autonomous operation powered by AI agents with deterministic business rules and complete analytics visibility.
This is essentially building a vertical SaaS product for internal use.
Scope of Work
You will design and build the core middleware + analytics engine that connects:
• OpenAI API (agent-style orchestration)
• Twilio (SMS + Voice)
• Meta Lead Ads (Facebook)
• GoHighLevel CRM (API sync)
• PostgreSQL database
• Custom KPI dashboard (React / Next.js)
Core Responsibilities
• Architect multi-agent AI workflow system
• Build webhook handling system for SMS + FB leads
• Implement structured tool-calling logic
• Design deterministic business rule engine
• Build dual pipeline tracking (Acquisition + Disposition)
• Create marketing attribution + ROI engine
• Build real-time KPI dashboard
• Design database schema for scalable analytics
• Implement logging + monitoring system
• Optimize token usage and AI cost
Required Technical Skills
Must Have:
• Strong Node.js OR Python backend experience
• PostgreSQL database design experience
• Experience building SaaS dashboards
• API integrations (REST/webhooks)
• Experience with OpenAI API or similar LLM APIs
• Experience deploying to AWS / Vercel / Railway / similar
Strong Plus:
• Conversational AI systems
• Twilio integration
• CRM integrations
• Event-driven architecture
• Data aggregation / KPI computation systems
• Experience designing scalable products
How to Apply
To be considered, include:
Links to SaaS or dashboard systems you’ve built
Description of a multi-system API integration you’ve designed
Explanation of how you would architect a real-time KPI aggregation engine
Your preferred stack and why
Estimated timeline for completion
Bonus Question (Important)
How would you:
• Prevent an AI agent from executing actions outside defined business rules?
• Design a system that can scale to 50,000+ leads?
• Attribute revenue accurately to marketing channels?
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