Full-Stack Developer – Dental Marketing SaaS Platform (Node.js / Next.js / GoHighLevel / Sikka API)

We're building a white-label dental marketing platform that connects Google Ads to real patient revenue. Dental practices run ads- our platform shows exactly which campaigns brought which patients and how much those patients spent. Think RISEDDS or LassoMD. The stack: 1) GoHighLevel (call tracking + CRM) 2) Sikka ONE API (dental PMS data) 3) TeamCare (online booking) 4) Google Ads API 5) custom Next.js ROI dashboard. You'll build the Node.js middleware that ties them together, the attribution engine that matches ad calls to patient records, and the client-facing dashboard. A full A-to-Z technical specification is provided on acceptance, schema, API code, cron jobs, dashboard requirements, everything. You Must Have: Multi-tenant SaaS experience Strong REST API integration (multiple APIs, rate limiting, error handling) Node.js + Next.js + PostgreSQL HIPAA-aware development (PHI encryption, access control, audit logs) Clean documented code