Full-Stack Developer for System Enhancements, Webhooks & Metabase Integration

Overview We are looking for an experienced Full-Stack Developer to execute a well-defined sprint consisting of system enhancements, API webhooks, database updates, and technical documentation. The workload is strictly scoped to approximately 31 hours. Core Tech Stack & Ecosystem Bright Data Metabase Vite & PM2 SQL Make (Integromat) Fireberry CRM Scope of Work 1. Frontend & Backend Enhancements User Type Management: Execute a backend DB migration, create a new endpoint, and build a frontend column featuring a select dropdown, color-coding, and real-time saving capabilities. Filtering System: Develop a multi-select filter for the 'Type' parameter with Apply/Cancel logic, seamlessly integrating it into the existing filter architecture. UI/DOM Optimization: Implement targeted DOM updates for automatic status changes without triggering full page re-renders. Conditional Logic: Implement logic to hide specific UI buttons based on active statuses. 2. Integrations & Data Processing Contact Aggregation: Refactor the aggUserContacts function to merge data seamlessly from posts and comments, updating all usage instances across the application. WhatsApp Webhook (via Make): Segment phone numbers into blocks, add UI 'Send' buttons, build the integration with Make, implement a strict guard against double-sending, and ensure clean JSON payloads (stripping symbols). Fireberry Webhook: Set up an integration to transmit user data automatically upon a 'Positive response' trigger. Database Maintenance: Update group databases, configure DB file permissions, and thoroughly test related SQL queries. 3. Troubleshooting & Documentation Calculator App Repair: Diagnose and restore the functionality of the calculator module following a recent system failure. Metabase Setup & Guide: Investigate user access rights, resolve current 'read-only' limitations, test the solution, and write a step-by-step internal guide with screenshots. Architecture Documentation: Analyze the PM2 + Vite architecture of the calculator app and write clear, maintainable documentation.