WhatsApp Business API Integration

@NaveenSingh09

Hello, With over four years of backend development in Python, I understand the need for a robust WhatsApp Business API integration that handles webhook authentication and maintains persistent connections for multiple user instances. My plan is to first set up a secure Flask/FastAPI microservice, then implement a session manager that stores instance tokens in a Redis cache, and finally create asynchronous workers with Celery to process inbound and outbound messages in real time. I’ll also design a scalable database schema to track user instances and message logs, and expose REST endpoints for instance creation, deletion, and status checks. Testing will cover webhook verification, message delivery, and error handling. I’ll deliver clean code, Docker containers, and CI/CD pipelines, ensuring quick deployment and easy maintenance. Let’s discuss your requirements in detail so we can start building a reliable system together. Best Regards Naveen Thakur

@fatimamahsud1

Hi, I’m a backend developer with strong experience building scalable Node.js/Express systems and WhatsApp integrations. I can develop a webhook-based backend that manages multiple WhatsApp instances per user, handles messaging events, and maintains persistent sessions using a reliable architecture with MongoDB and REST APIs. The system will be designed for scalability, secure webhook handling, and efficient message processing so users can easily manage and interact with multiple WhatsApp connections. I’m happy to discuss the architecture and implementation details to ensure it fits your long-term scalability needs.

@bhartimalu

Hello, I am excited to assist you with the WhatsApp Business API integration. - I have extensive experience in backend development and have successfully completed similar projects. - My plan includes: 1. Requirement analysis 2. API setup 3. Testing 4. Deployment - I will use Node.js, Express, and MongoDB for a robust solution. - I propose a 2-week timeline with regular updates via your preferred communication channel. Choose me for my dedication to quality and timely delivery. What specific features do you need in the integration? Do you have a preferred tech stack? Regards, Bharti M.

@bilal0356

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on JavaScript, Node.js, Express JS, Software Development, Backend Development, MongoDB, API Integration, AI Chatbot Development Lets connect in chat so that We discuss further. Thank You

@Vickyjajim

Hello, I can help you build a scalable WhatsApp integration system using the WhatsApp Business API with webhook-based communication. I have solid experience in backend development and API integrations, including messaging systems and webhook-based event handling. I can implement a backend architecture that supports multiple WhatsApp instances per user, persistent sessions, and reliable message processing. What I will deliver ✔ WhatsApp Business API integration with proper authentication ✔ Webhook-based message handling system for incoming and outgoing events ✔ Support for multiple WhatsApp instances per user ✔ Session and connection management for persistent communication ✔ Efficient message queue and event processing ✔ Clean, scalable backend structure with proper documentation

@muhammadd7860

Hello, My name is Muhammad Ahmed. I’m very interested in helping build your WhatsApp integration backend. I understand you need a scalable backend system using the WhatsApp Business API with webhook-based communication, where each user can manage multiple WhatsApp instances, maintain persistent connections, and process messaging events reliably. I can help design and develop a clean backend architecture for webhook handling, session management, instance management, message event processing, and connection persistence. The system will be structured for scalability so multiple users and multiple WhatsApp instances can be handled efficiently without unstable session behavior. My focus will be on: * secure webhook integration * reliable backend session handling * multi-instance architecture per user * persistent connection management * efficient message event processing * clean, maintainable backend code I understand this requires more than a simple integration, so I would approach it with production-ready practices, keeping performance, security, and future scaling in mind. I would be happy to discuss your stack, current setup, and the best architecture for implementation. Best regards, Muhammad Ahmed

@kratika0510

Hello sir let's connect on chat with my experience with mera and api integration among various platforms, I believe I'm the most suitable fit for your WhatsApp Business API integration project. With my thorough understanding of software development, especially in PHP and Python, I'm confident in building the scalable backend system you require, where each user can manage multiple WhatsApp instances and handle messaging events efficiently. In terms of experience, I've successfully integrated APIs into different projects—ranging from e-commerce stores to full web apps—for an improved user experience. I understand that in this particular project, the absence of QR-based authentication might be a concern, but I assure you that using webhook configuration and efficient backend session handling can overcome this issue effectively. Above all, my commitment lies with the satisfaction of my clients and ensuring everything works smoothly. So, If you're ready to build a highly functional WhatsApp integration system, please don't hesitate to reach out to me—I guarantee a job done excellently. Let's bring your-vision-to-life!

@aloksinghc03

As a senior software developer with a specialty in JavaScript and Node.js, I am confident that I am highly qualified for the WhatsApp Business API integration project. Throughout my career, I have consistently built robust backend systems that are scalabl and adept at handling complex messaging events. I recognize the unique challenge presented by the absence of QR-based authentication in the existing WhatsApp Business setup, but I have the necessary skills and expertise to overcome it. By leveraging my in-depth understanding of webhook configuration and backend session handling, I will help you establish a stable, persistent connection that ensures efficient management of multiple WhatsApp instances. Moreover, as a passionate problem solver, I am keen on finding creative solutions to any roadblocks we may encounter along the way. I will 그and goal-oriented demeanour to this project and provide you with a result that not only meets but exceeds your expectations. I look forward to discussing further how my skills and experience can contribute to your project's success.

@ffulb

Building a WhatsApp integration system using WhatsApp Business API with webhook-based communication requires handling connections via webhook configuration and backend session handling, as QR-based authentication is not provided. This setup demands a scalable backend system to manage multiple WhatsApp instances, maintain persistent connections, and handle messaging events efficiently. Our experience with API integration, server admin, and AI integration will be beneficial in this project, particularly our work with Telegram/LINE bot development and AI chatbot development using LLM APIs. We have also managed multiple website operations with autonomous AI, which demonstrates our capability to handle complex backend systems. To achieve this, we will utilize Node.js, Express JS, and MongoDB to build a robust backend system, and implement efficient messaging event handling using webhook-based communication. Our technical approach will ensure a scalable and reliable WhatsApp integration system. We are available to start immediately and look forward to discussing the project details further to ensure a successful implementation.

@ibrahimb164

With experienced in integrate service to notified in Line messaging, service can be done within a week

@Ritesh11gupta

Hi there, i can help you with with setting up WhatsApp business api using Facebook official method.

@lexi14

I have built multi-instance WhatsApp backend systems before and understand the webhook + session management challenges you are dealing with. My proposed architecture: 1. Session layer: Use Baileys (Node.js) as the WhatsApp session engine. No QR lockouts, supports webhook-based event delivery, and handles persistent reconnects automatically. 2. Multi-instance management: Each user gets an isolated session stored in a persistent SQLite or Redis store. Sessions are health-monitored and auto-reconnected on disconnect. 3. REST API: Clean endpoints for sending messages, managing instances, and querying session status. 4. Webhook delivery: All inbound events (messages, receipts, status updates) delivered to your configured webhook URL with retry logic. 5. Scalable: Architecture supports 50+ concurrent instances on a single VPS with connection pooling. Tech stack: Node.js + Baileys + Express + Redis Deliverables: Full source code + Docker setup + API documentation + 1 week support. Timeline: 7 days. Ready to start immediately.

@Mabena1

Greetings Sir/Madam, I am a strong fit for your project. I understand you need a scalable backend system with webhook-based communication to manage multiple WhatsApp Business API instances without QR authentication. My expertise in AI automation, web/app development, and digital solutions will ensure a clean, seamless, and professional integration that maintains persistent connections and efficient messaging event handling. While I am new to Freelancer, I have strong real-world experience and have completed multiple successful projects off the platform. Could you share your primary goals and timeline for this WhatsApp integration system? Best regards, Mpumelelo Mabena