Backend Dev Needed for PaidFamily Platform – API & Real-Time Integration Hi, I’m looking for an experienced backend developer to integrate APIs and real-time features for my platform. All UI templates (HTML/CSS/JS) are fully built and ready. Your role will be to handle backend development, integrations, and making the system fully functional. ⸻ Key Features Needing Implementation 1. Call / Communication System (Most Critical) * Outbound call creation via provider (Twilio / Plivo / similar) * Caller ID configuration using custom caller ID spoofing and real-time call control features * Real-time call control (answer, hangup, DTMF input handling) * Multi-language voice support (TTS integration) * Call recording storage & retrieval * Call flow / verification workflows (menu-based, user input, etc.) * Optional SMS integration (pre/post notifications) ⸻ 2. Real-Time Monitoring * Live call status updates (ringing, answered, ended) * WebSocket-based real-time dashboard updates * Admin ability to monitor active sessions/calls ⸻ 3. Payment System * Subscription system (tier-based plans) * Payment integration (Crypto preferred, crypto only if supported properly) * Subscription activation & status tracking * Admin override for subscriptions ⸻ 4. Admin Panel * User management (create, update, suspend, delete) * Subscription management * System settings * Logs & activity monitoring ⸻ 5. External Integrations * Telephony API (Twilio or similar) * Telegram Bot API (notifications, alerts, support) * Optional SIP/VoIP integration (if experienced) ⸻ Tech Requirements * RESTful API development * WebSocket (Socket.IO or similar) for real-time features * Database design (PostgreSQL or MongoDB) * Authentication (JWT or session-based) * Experience with telephony APIs or VoIP systems is a plus ⸻ What’s Already Done * Full frontend UI (10+ pages) * Responsive design * All forms and UI interactions prepared (currently static) ⸻ What You’ll Do * Connect frontend to backend APIs * Replace static data with dynamic data * Build database schema * Implement authentication system * Integrate all external services * Ensure system is scalable and production-ready ⸻ Project Scope 1. Backend API development 2. Database design & implementation 3. Frontend-backend integration 4. Payment system integration 5. Real-time (WebSocket) features 6. Third-party API integrations ⸻ Timeline & Budget * Timeline: 1–2 weeks (flexible based on scope) * Budget: $50–$250 (open to adjustment depending on experience and scope) Please include: 1. Experience with telephony / VoIP systems 2. Experience with payment integrations 3. Preferred tech stack 4. Estimated timeline 5. Your rate ⸻ Notes * Frontend is complete — minimal UI changes needed * Focus is on backend + integrations * Clean, scalable code is important ⸻ Key Question Do you have experience building real-time call systems using APIs like Twilio (or similar), including call control and event handling? Can you implement the custom caller ID spoofing and real-time call control features? These are most critical.