Looking for Expert Full Stack & AI Developer (SaaS / WhatsApp / OpenAI)

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand the importance of finding an expert Full Stack & AI Developer for your Multi-Tenant SaaS platform project. Your goal of enhancing the existing architecture, implementing new features, and maintaining a professional production level aligns perfectly with my background in handling high-complexity systems, such as scaling for 1M+ users and developing AI-focused applications in the FinTech sector. One strategic insight I can offer for your project is to prioritize a modular architecture design to ensure scalability and flexibility as new features are added. Drawing from my experience in building and scaling Telegram Mini Apps serving over 1 million users, I am confident in my ability to deliver the level of complexity required for your SaaS platform. I encourage you to reach out to me to discuss how we can collaborate on this project and ensure its success. Let's connect and dive into the details of your project roadmap.

@Herculesz

Hi, this multi-tenant SaaS platform combining AI chatbots, realtime messaging, and WhatsApp integration presents a complex orchestration challenge that demands robust scaling and data isolation. The real engineering risk lies in ensuring low-latency, reliable message delivery and seamless AI response orchestration under multi-tenant constraints. I usually structure systems by separating ingestion, realtime messaging, and AI response layers to isolate concerns and optimize performance. I've built several production systems with similar realtime and AI orchestration demands. The Custom Feature Development & Integration project reflects my ability to dive into existing codebases and improve architecture for scalable SaaS platforms, while the TikTok AI Livestream Setup highlights my experience with realtime WebSocket flows and AI chatbot integration. I recommend implementing tenant-aware routing and robust queueing to handle spikes and failures gracefully, alongside embedding refresh and fallback routing for AI reliability. Systems I design prioritize long-term maintainability and production readiness, with clear boundaries between realtime messaging, AI logic, and external integrations. I can start by outlining the retrieval and messaging pipeline, mapping agent flow for AI interactions, and reviewing the current chunking and tenancy strategy. Thanks, Hercules

@ykarora26

With a solid background in Full Stack development and AI technologies, I'm well-equipped to contribute to your Multi-Tenant SaaS platform project. I understand the need for enhancing the architecture, integrating AI chatbots, and real-time messaging systems. Could you share more insights on your preferred approach to handling WhatsApp Business API integrations? Regards, Yogesh Kumar

@TechizeBuilder

Hi, I came across your project "Looking for Expert Full Stack & AI Developer (SaaS / WhatsApp / OpenAI)" and I'm confident I can help you with it. About Me: I'm a full stack developer and agency owner with over 8+ years of experience in Node.js, Next.js. , and I understand exactly what’s needed to deliver high-quality results on time. Why Choose Me? - ✅ Expertise in required Technologies and 1 year post deployment free support - ✅ On-time delivery and excellent communication - ✅ 100% satisfaction guarantee Let’s discuss your project in more detail. I’m available to start immediately and would love to hear more about your goals. Looking forward to working with you! Best regards, Deepak

@albertc1996

Hi, I’ve worked on AI-powered systems and understand how to structure scalable, multi-tenant SaaS platforms with real-time messaging and chatbot integration. I can help you stabilize and improve your current codebase, then extend it with AI features like RAG-based responses, structured chatbot flows, and reliable API/webhook integrations. My focus is always on clean architecture, performance, and production-ready delivery—not just quick fixes. Before we start, could you share: • Current stack details (monorepo or separated services?) • Main bottleneck right now (performance, architecture, or features)?

@AlexVydrin

Hi there, this feels very aligned. I’ve worked on multi-tenant SaaS systems with React/Node and RAG-based AI features, so stepping into an active codebase to improve architecture, real-time flows, and tenant-aware AI functionality is the kind of work I’m comfortable owning. My strongest fit here is the combination of product engineering and system thinking: TypeScript/React/Next on the front end, Node APIs and integrations on the backend, and AI layers that stay grounded, observable, and production-safe rather than “demo-ready only”. For the messaging side, I’m familiar with the operational realities of WhatsApp Cloud API and webhook systems, especially the need for fast 200 responses, idempotent processing, signature verification, and queue-based async handling to avoid retries and duplicate events. For multi-tenant and realtime architecture, I’d pay close attention to tenant isolation, websocket scaling, Redis/queue support, and clean boundaries between chat, CRM, AI retrieval, and external integrations so the platform can grow without becoming fragile. Portfolio/GitHub can be shared, and I’d be happy to contribute both feature delivery and architectural cleanup from day one.

@SBITServices

Hi, I have extensive experience in Full Stack development and AI technologies, specializing in TypeScript, React.js, Node.js, MongoDB, and more. I have successfully worked on similar projects, focusing on AI Chatbots, WhatsApp API integration, and SaaS architecture. Let's discuss how I can contribute to your Multi-Tenant SaaS platform. Please start the chat for further discussion. Regards, Sai Bhaskar

@softwarelinkerrs

As the founder of SoftwareLinkers, I've successfully helped numerous start-ups and established businesses across different industries build reliable and scalable digital systems. With over a decade of experience in PHP & MySQL backend development, RESTful API integration, as well as React.js / Flutter app development (which consumes PHP APIs like what your project requires), I'm confident in my ability to handle your Multi-Tenant SaaS platform effectively. Moreover, I'm well-versed in diverse AI technologies such as RAG, Prompt Engineering, and Vector Databases which equip me with valuable insights that can exponentially enhance your AI Chatbot and other required functionalities. Additionally, my skills in message integrations with WhatsApp Business API coupled with my understanding of SaaS Architecture and Multi-Tenant Systems make me an ideal fit for your project. I understand that delivering clean, scalable, and production-ready code is crucial for your project's success. That's why my team at SoftwareLinkers doesn't just write code; we understand your unique business goals and design solutions that perfectly align with them. We take pride in our high client retention rate and 96% job success rate due to timely delivery and clear communication throughout the project lifecycle. If these are the qualities you're looking for in a freelance developer, then let's have a chat about how we can bring your project to life!

@krisk63

Hi, this is Kris from McKinney, Texas, I've reviewed your project requirements and understand that you are seeking a highly experienced Full Stack / AI Developer to join your team in continuing the development of a Multi-Tenant SaaS platform. The key challenges include improving the existing architecture, building new features, and ensuring professional production-level quality. My approach involves delving into the existing codebase, enhancing system architecture and performance, developing clean and scalable code, resolving issues, optimizing system performance, and implementing new features to meet your project goals effectively. A few additional questions: Q1: Could you provide more details about the current tech stack being used in the project? Q2: Are there any specific AI technologies or integrations that you prioritize for this phase of development? Q3: What are the key performance metrics or KPIs that you aim to achieve with the platform? Best regards, Kris Kramer

@amadorjay

Hello, The primary engineering challenge lies in managing the complexity of a multi-tenant architecture while ensuring optimal resource allocation and performance. Additionally, real-time messaging requires robust data synchronization to maintain state across concurrent users and devices. What is the current state of the existing infrastructure? Are there specific API design constraints we should be aware of, particularly regarding the WhatsApp Business API integration? Furthermore, how do you envision the security model to handle sensitive user data across different tenants? I look forward to discussing the architecture and your vision for this project.

@aliAdelElroby

Hey, I just read your post. You need a full-stack developer to build a multi-tenant SaaS platform with features like an AI chatbot, live chat, WhatsApp Business API integration, and a CRM system. For this, I would use Node.js and integrate the AI chatbot alongside a real-time messaging system to ensure smooth communication. I'll also make sure everything works well with the WhatsApp Business API so that you can manage customer interactions seamlessly. I have built multi-user applications and integrated chat functionalities before, so I know exactly what this takes. I'm available to start immediately. Have you decided on the specific platforms or tools you want for the live chat feature? Check out my portfolio at effivio.com. Ali

@ciss26

Hello, I hope you are doing well. I understand that you are looking to build a MULTI-TENANT SAAS PLATFORM, and I would be happy to help. I have extensive experience in designing and developing platforms and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.

@seefattechnologi

I checked your project description -------I believe I can do this project in an efficient and professional manner. I am highly proficient to work on this project . I am Passionate NODE.JS/React.js/Full stack developer having rich experience with all the latest technologies with so many successful Tasks. I have some queries to give you accurate time and price Please ping me to get started and provide you great results. Thanks

@artemb35

Hey there! I’m genuinely excited about the opportunity to jump into your multi-tenant SaaS platform project. It sounds like a fantastic challenge, and I love working on solutions that blend AI with real-time communication. In my previous project, I developed a similar SaaS platform that integrated live chat and AI chatbots, optimizing the user experience and ensuring seamless communication. One clever feature we added was a dynamic routing system for the chatbots, which adjusted responses based on real-time user interactions—this not only enhanced user satisfaction but also improved response accuracy. I’ve worked extensively with TypeScript, React, and the OpenAI APIs, so I’m confident I can help elevate your platform. My GitHub showcases some of my past projects, where you can see my hands-on experience with the tech stack you’re using. I’d love to know more about your current architecture and any specific challenges you’re facing with the WhatsApp API integration. How about we set up a quick Zoom this week to discuss? Looking forward to your reply! Best, Artem

@matheussilva114

Hi there, THE CHALLENGE is ensuring seamless integration of AI technologies, such as OpenAI APIs and AI chatbots, with the existing SaaS platform architecture. Additionally, handling the complexities of real-time messaging and system design to create a scalable and efficient system poses a technical challenge. As the Full Stack/AI Developer, I would approach these challenges by conducting a thorough analysis of the current architecture, identifying areas for improvement, and implementing best practices for integrating AI technologies and real-time messaging features. By leveraging my experience in SaaS architecture and AI technologies, I would focus on optimizing system performance, enhancing user experience, and ensuring smooth integration of WhatsApp Business API and other messaging integrations. Regards, Matheus

@YuriiVusochin

Hello, I have read your description and I understand what you are expecting. 1. Will the system require integration with external services such as WhatsApp Business API, Meta Cloud API, or Twilio/Vonage for messaging and integrations? 2. Should the architecture be designed to handle multi-tenancy effectively, considering scalability and performance targets? 3. Will the AI components of the platform utilize OpenAI APIs, RAG, Prompt Engineering, and other AI technologies mentioned in the project description? I take ownership of execution, ensuring stable, production-grade delivery. Communication will be direct and efficient. Let’s align on the details and move forward. Best regards, Yurii

@DngPhgNam

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have worked on multi-tenant SaaS platforms integrating AI chatbots and real-time messaging using React, Node.js, and OpenAI APIs, making the applications robust and scalable with ease. The most important part to successfully complete this project is understanding and improving the existing architecture while seamlessly integrating AI and messaging APIs. Approach: ⭕ Review and master the current codebase to ensure full understanding. ⭕ Enhance multi-tenant SaaS architecture for scalability and performance. ⭕ Integrate and optimize OpenAI API and AI chatbot functionalities. ⭕ Implement robust WhatsApp Business API and real-time messaging using Socket.IO. ⭕ Ensure secure authentication and smooth deployment using Docker and Linux VPS. ❓ Could you please clarify if there is existing documentation for the system architecture? ❓ Are there particular AI features or chatbot behaviors prioritized for development? I am confident in delivering high-quality, production-ready code and scalable features, leveraging my extensive experience with full stack SaaS and AI integration. Looking forward to contributing to your project and delivering excellent results. Best regards, Nam

@abhiramukk

Hi, This is Abhiram from UK. I understand the need for a skilled Full Stack / AI Developer to enhance your Multi-Tenant SaaS platform. With expertise in TypeScript, React.js, Node.js, and MongoDB, I can contribute to improving architecture and implementing new features. Let me ask you a couple of things so I understand it better: Q1- Are real-time updates crucial for the messaging features? Q2- How do you envision integrating AI Chatbots with the existing CRM system? Looking forward to discussing how I can support your project effectively.

@zuoe1

Question 1 - Is the current multi-tenant structure already implemented, or does it need to be reviewed and redesigned for proper tenant isolation? Question 2 - Which WhatsApp provider are you currently using: Meta Cloud API, Twilio, Vonage, or another BSP? Question 3 - Do you already have the AI chatbot/RAG flow working, or should the first milestone focus on building that part properly?