Full Stack Developer / Development Agency Needed – CRM & Operations Platform

Project Overview We are building a modern, secure, scalable CRM + Operations Platform for a multi-city two-wheeler service company. The platform will manage complete business operations including customer management, leads, service workflows, billing, inventory, employees, vendors, WhatsApp CRM, analytics, and mobile app integrations. We prefer developers experienced with AI-assisted development tools like Cursor, Claude Code, GitHub Copilot, Windsurf, or ChatGPT to accelerate development while maintaining enterprise-grade code quality. Required Tech Stack Frontend Flutter Web Backend NestJS (TypeScript) Database & Infrastructure PostgreSQL Redis Docker / Docker Compose VPS Deployment Caddy Server Core Modules Lead & Customer Management Vehicle & Service History Management Booking & Technician Assignment Job Cards & Service Workflow POS Billing & GST Invoicing Membership Management Inventory & Vendor Management Employee Productivity Tracking Dashboards & Reports Complaint & Feedback Management Audit Logs & Activity Tracking WhatsApp CRM Module WhatsApp Business API Integration Shared Team Inbox Customer chat history Lead creation from WhatsApp Auto follow-ups & reminders Booking/service updates Invoice & document sharing WhatsApp chatbot integration Broadcast campaigns Customer segmentation Conversation analytics Required Integrations WhatsApp Business API Payment Gateway Calling / IVR Software SMS & Email Customer & Mechanic Mobile Apps Security Requirements Must have experience with: JWT Authentication Role-Based Access Control (RBAC) OAuth-ready architecture HMAC Request Signing API Rate Limiting OWASP Security Practices Secure File Uploads Audit Logging SQL Injection & XSS Protection Secure Session Management Timeline & Delivery Deadline: 30 Days Complete delivery includes: Frontend Development Backend Development Database Implementation API Development Third-party Integrations WhatsApp CRM Setup Deployment on VPS Production Configuration Testing & Bug Fixing Security Testing & Hardening Performance Optimization Documentation & Handover Preferred Experience Apply only if you have experience building: CRM / ERP Platforms SaaS Applications Multi-tenant Systems Large Admin Panels WhatsApp CRM Solutions Payment Integrations Business Automation Platforms Only apply if you can commit to a production-ready delivery within 1 month.