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I need a full-stack partner who can build a responsive website and a cross-platform mobile app (iOS and Android) that feel like one seamless product. The core of the project is tight integration between an AI layer, a lightweight yet robust CRM, and several business-automation workflows. Here is what has to come together: • Cross-platform codebase feeding both the web front end and the native apps. • AI integration that can analyse user inputs and trigger actions inside the CRM in real time. • A custom CRM module—contact records, deal stages, reporting and role-based access. • Automation flows: WhatsApp messaging, transactional and drip email sequences, plus a visual sales-pipeline engine that can be tweaked from an admin dashboard. Tech stack is flexible, but I usually lean toward React (or Flutter) + Node/Express or Django for APIs, PostgreSQL or MongoDB for data, and Twilio/WhatsApp Business APIs for messaging. If you have a better way to make the AI component sing—TensorFlow, OpenAI, LangChain—I’m open. Just explain why. Deliverables 1. Production-ready web app deployed to a cloud host of your choice. 2. iOS & Android builds published to TestFlight / internal track. 3. Integrated CRM with basic data migrated from a CSV I’ll provide. 4. End-to-end automation workflows tested and documented. 5. Admin guide and annotated source code in a private repo. Acceptance criteria: smooth sign-up with social login, sub-2-second response times on AI prompts, zero failed WhatsApp sends in a 48-hour test window, and clean Lighthouse scores (90+). If this lineup excites you and you’ve shipped something similar, let’s talk timelines and milestones.
Project ID: 40653280
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96 freelancers are bidding on average ₹28,206 INR for this job

Hello, I have 10 years of experience building AI-powered SaaS platforms, CRMs, and cross-platform applications using React.js, React Native, Node.js, PostgreSQL, REST APIs, and cloud deployment. I can create a unified web and mobile product with AI-driven actions, role-based CRM access, sales pipelines, reporting, WhatsApp messaging, email automation, and admin-controlled workflows. I recommend React.js for the web application, React Native for Android and iOS, Node.js for scalable APIs, and PostgreSQL for reliable CRM data. OpenAI or another suitable LLM can analyze inputs, trigger CRM updates, and support intelligent automation with secure validation. I will prioritize clean architecture, responsive UI, API reliability, performance optimization, CSV migration, testing, documentation, and deployment readiness. Let’s discuss your existing workflows and finalize practical milestones for the first release. Best regards
₹25,000 INR in 7 days
7.0
7.0

Hi! We can build your AI-powered web & mobile ecosystem using a unified React / React Native + Node.js (Express) architecture to deliver sub-2-second AI responses, seamless multi-platform sync, and reliable workflow automation. Technical Methodology: AI Gateway & LangChain Integration: Build serverless API endpoints using LangChain + OpenAI API to process user inputs, extract structured JSON entities, and automatically trigger CRM pipeline state changes with zero client-side latency. Cross-Platform Web & Mobile Unified Stack: Leverage React Native for Web (or React + React Native) sharing custom hooks, API services, and state logic across iOS, Android, and Web to ensure a 100% synchronized user experience. Custom CRM & Automation Pipelines: Construct a custom CRM schema on PostgreSQL with RBAC, deal stages, and CSV import logic. Integrate official WhatsApp Business API (Twilio/Meta) with event-driven background queues (Redis/Bull) to guarantee 0% message drop rates during automated drip sequences. Performance & Store Delivery: Optimize asset bundles to achieve Lighthouse ≥ 90 and publish iOS/Android builds to TestFlight / Internal Testing. Deliverables: Web deployment, TestFlight/APK builds, repository, and admin guides. Ready to discuss!
₹25,000 INR in 15 days
7.1
7.1

Hi I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native, and for web and backend on react js and node js, Python Django. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
₹20,000 INR in 14 days
6.5
6.5

Hello Client, Greeting of the day!!!! I read your job description. I can do this job with quality product. I am always available for your support. Thanks
₹12,500 INR in 20 days
6.6
6.6

I can help you build this as a seamless full-stack SaaS product across web, iOS, and Android, with a shared architecture and strong integration between the AI layer, CRM, and automation workflows. I can handle the React/Flutter frontend, Node.js backend, PostgreSQL/MongoDB, role-based CRM, AI integration, WhatsApp Business/Twilio, email automation, sales-pipeline engine, social login, CSV migration, and cloud deployment. For the AI layer, I’d recommend OpenAI with a structured API/service layer rather than overcomplicating it with TensorFlow unless custom model training is actually required. I can also take care of TestFlight/internal Android builds, end-to-end testing, documentation, and private repository setup. A few things I’d like to clarify: What AI actions should be triggered inside the CRM? Which email provider do you prefer for transactional/drip campaigns? Do you already have the WhatsApp Business/Twilio accounts and API credentials? Do you have any existing UI/UX designs, or should I handle the product design as well? Once I have these details, I can suggest a clear MVP scope, timeline, and milestone plan.
₹25,000 INR in 7 days
5.6
5.6

With almost a decade in the digital arena, I am fully equipped to bring your AI-driven project to life. My proficiency in MERN and Flutter enables me to build a unified, cross-platform system that powers your web app and native mobile apps flawlessly. And as for your CRM needs, I have extensive experience developing custom modules encompassing everything from contact records to deal stages and reporting. One aspect of this project that particularly excites me is the integration of AI capabilities. Though your preference is towards React and Node architecture, I'm open to exploring alternative technologies such as TensorFlow, OpenAI, or LangChain if they promise better performance. Rest assured, be it node or another language; my understanding of data systems using APIs, databases (SQL/NoSQL like MongoDB), and services like Twilio will provide lsrukest efficiency required for integrating messaging within WhatsApp coming out with an effective CRM automation workflow.
₹35,000 INR in 7 days
4.7
4.7

My name is Mayank and I am confident that I have the skills and experience needed to tackle your complex project. With over 20 years of experience specializing in PHP-based development, I am no stranger to building scalable solutions and automating operations to make businesses more efficient. I have a deep understanding of various frameworks and languages such as WordPress, Laravel, MongoDB - all of which you mentioned being compatible with your project. Moreover, as an e-commerce specialist, I have extensive knowledge in WooCommerce which aligns with your need for a lightweight yet robust CRM module. Having worked on mission-critical projects related to payment gateways and backend logic, I understand the importance of clean and maintainable solutions - a principle I apply in each project. Due to the nature of my work, I am comfortable working with various APIs and their integration to deliver a seamless experience. Lastly, my commitment extends beyond just completing tasks; it is about providing ongoing support that enables businesses like yours to scale. This mindset has earned me repeat clients who appreciate my dedication even after the initial contract. Should you choose me for this opportunity, you can expect a dependable professional who delivers on time and exceeds expectations. Let's discuss further how we can bring your vision to life!
₹12,500 INR in 7 days
4.8
4.8

Hello! I have built full-stack web and mobile platforms with React, Node.js, PostgreSQL, AI APIs, CRM modules and business automation. I can handle the complete web, iOS and Android integration. I’ll build a shared cross-platform architecture with a Node.js API, PostgreSQL database and AI layer using OpenAI/LangChain where suitable. I’ll connect CRM actions, role access, reporting and automation workflows. I’ll also integrate WhatsApp Business/Twilio, email sequences, social login, CSV migration and an admin pipeline dashboard, then test performance and reliability before deployment. Timeline: 3 weeks I can start immediately as I am free now. I respect your technical suggestions and can adapt the stack to your needs while aiming for a long-term partnership. Thanks
₹18,000 INR in 21 days
4.8
4.8

With my 6+ years of experience in mobile app development, Node.js, and web development, I am confident that I can deliver the high-quality, integrated solution you are seeking. As an AI enthusiast, I have a proven track record of building autonomous agents and solid CRM systems - both crucial components for your project. My proficiency with React Native means that you'll have a native feel on both iOS and Android while maintaining a unified codebase for easy management and scalability. Moreover, my familiarity and experience with powerful tools such as LangChain and OpenAI would greatly enhance the AI integration aspect of your project. Additionally, my astute comprehension of WhatsApp Business APIs would ensure not a single message is left unsent during your test phase. Looking at your stack preferences, I couldn't help but notice the similarity to the projects I have accomplished in the past where my clients found great satisfaction in the finished products. My work exudes reliability, efficiency, and top-notch functionality often praised by clients who were buried under unnecessary manual tasks before they met me. Let me bring this same level of excellence to your project.
₹12,500 INR in 2 days
4.7
4.7

I will build your integrated web and cross-platform mobile app (iOS/Android) using React Native/React and Node.js with PostgreSQL, providing a unified codebase, custom CRM, and automated WhatsApp/email pipelines via Twilio and SendGrid. I will connect OpenAI/LangChain to process user inputs in real time with sub-2-second response times, ensure clean Lighthouse scores, migrate your existing CSV data, and deliver complete cloud deployments alongside TestFlight/Play Store internal builds. Regards, Bilal
₹25,000 INR in 2 days
4.3
4.3

As the head of Web Crest, I bring extensive experience in end-to-end development, particularly with full-stack and mobile applications. Your project is an exciting one for us because it pulls together a number of technologies including AI, CRM, and business automation, all of which we have significant expertise in. We have built complex web apps harnessing cross-platform codebases utilizing React, Flutter, Node.js nested with Express, PostgreSQL/MongoDB-driven databases to name a few; though we are flexible with new and better technologies. Our prior work abounds with success stories helping our clients to achieve various deliverables such as yours. Streamlining workflows via integrating AI tools like TensorFlow or comparable falls well within our purview. In addition, my team has consistently delivered robust CRM modules, implemented successful automation flows alongside seamless integration among social platforms - qualities your project requires. Let’s talk timelines and milestones. My commitment is always to secure client satisfaction as I ensure smooth sign-ups, sub 2-second response times on AI prompts, zero failed messages along with clean Lighthouse scores (90+).
₹25,000 INR in 5 days
4.0
4.0

Hi, I will build the responsive website and iOS/Android app on React and Node, with an OpenAI layer that reads user inputs and triggers actions inside your custom CRM. I will wire WhatsApp via Twilio, email sequences, and the visual sales pipeline. I can start today. For the CRM, I will set contact records, deal stages, reporting, and role-based access, then migrate your CSV. Questions: 1) React Native or Flutter for the apps? 2) PostgreSQL or MongoDB for data? Looking forward to discussing further. Regards, Shayan.
₹21,250 INR in 3 days
3.5
3.5

I’d use React/React Native + Node.js + PostgreSQL for a shared product architecture, with OpenAI behind a controlled AI service. The AI can interpret user input, trigger CRM actions, and keep every action auditable rather than letting the LLM directly modify business data. My approach: Shared API/auth layer for web + iOS + Android CRM with contacts, deals, pipeline stages, reporting and RBAC AI action layer with structured tool/function calling WhatsApp via Twilio/WhatsApp Business API with delivery/retry tracking Transactional + drip email automation Admin-configurable visual sales pipeline CSV migration with validation/deduplication Cloud deployment, monitoring and performance optimization For the <2s AI requirement, I’d keep prompts/context lean, use async processing where an action doesn’t need to block the UI, and cache predictable data. For WhatsApp, I’d implement webhook-based delivery tracking and retries so the 48-hour acceptance test is measurable rather than relying on a simple API call. A couple of things I’d clarify before estimating milestones: Should one account support multiple companies/workspaces, or is it single-tenant? Which social logins are required (Google, Apple, etc.)? Do you already have the CSV structure and WhatsApp Business/Twilio account?
₹50,000 INR in 35 days
3.7
3.7

I’m an experienced Full-Stack AI Developer and can build the responsive web + iOS/Android app with AI-to-CRM automation, PostgreSQL, WhatsApp/Twilio, email workflows, role-based CRM, social login, cloud deployment, and complete testing/documentation.
₹25,000 INR in 7 days
3.6
3.6

As someone who's been involved in full-stack development for over five years, I'm confident in my ability to tackle your ambitious AI web and mobile app project. My skillset includes not only the languages and frameworks you've specified like React, Node, Express, MongoDB, and PostgreSQL but others such as Django and Laravel that can greatly enhance a project's flexibility and efficiency. We won't simply build a cross-platform codebase, we'll make sure it operates harmoniously with the AI layer, the CRM, and all the business automation workflows. I've also had extensive experience integrating AI into systems, using languages such as Python. So whether it's Tensorflow or OpenAI—or any other framework or API—you need for your AI component, I'll ensure it sings in harmony with your desired goals. What sets me apart is my dedication to long-term success. Beyond building just another web or mobile app, I focus on delivering practical, scalable solutions that are designed for long-term success. My aim is to turn your ideas into reliable digital products that can adapt and grow alongside your business. I can guarantee a smooth sign-up process with social login, rapid response times for AI prompts, dependable WhatsApp functions and Lighthouse scores above 90. I promise not just a satisfactory completion of the outlined tasks but an admin guide and annotated source code in a private repository—no hidden knowledge. Let's discuss timelines and milestones further.
₹20,000 INR in 7 days
3.9
3.9

With a passion for turning complex requirements into clean, scalable systems that fuel long-term business growth, I am confident I can deliver on every aspect of your project. My in-depth understanding and hands-on experience with React.js, Node.js, and Python aligns perfectly with your tech stack preference. What sets me apart is my ability to blend robust functionality with an aesthetically pleasing UI/UX design - a key factor that ensures your users will get the best possible experience across platforms. In regards to the AI component of your project, I have practical experience working with n8n and AI Automation, which guarantees an efficient system capable of delivering impressively fast response times, exceeding the defined sub-2 second threshold. Even better, my expertise goes beyond just choosing technologies: it's about crafting comprehensive solutions designed specifically to meet unique business requirements, such as those you've laid out. Not only will I deliver according to the acceptance criteria - smooth sign-up flow with social login, zero WhatsApp send failures within 48 hours of testing window – but I'll also provide you with well-documented work and an admin guide to ensure streamlined future management. It's time to turn your vision into a seamless reality that powers lasting success for your business. Let’s connect and discuss further details!
₹12,500 INR in 5 days
3.4
3.4

Here! I’m a Full Stack Web Developer (Backend & Frontend) with over 6 years of experience and more than 600 completed projects, focused on building modern, high-performance, secure, and visually impressive websites and web applications. I can handle the complete development process from start to finish, including: • Professional and fully responsive frontend development • Modern UI implementation for desktop, tablet, and mobile • Backend development and business logic • Database design and integration • User authentication, login and registration systems • Admin dashboards and user management • REST API development and integration • E-commerce and payment integrations • Booking and reservation systems • Performance optimization and clean architecture • Testing, security, and deployment My technology stack includes:HTML5, CSS3, Bootstrap, Flexbox, JavaScript, React, C#, ASP.NET Core, REST APIs and Microsoft SQL Server. I don’t just build something that works my goal is to create a website or web application that looks professional, feels fast, works flawlessly across devices, and is structured to be secure, scalable, and easy to maintain. Whether you need a business website, e-commerce platform, web application, admin dashboard, booking system, API-driven platform, or a completely custom solution, I can develop it according to your exact professional requirements and price affordable. I’m waiting for your answer Kind regards, Jure
₹15,000 INR in 2 days
2.3
2.3

You're trying to sync real-time AI decisions with a CRM that also fires WhatsApp messages, race conditions will pop up when two users hit the same deal stage at once. I'd lock the record in PostgreSQL for the 200ms it takes the AI to respond, then release it so the next automation can run without stepping on the first. Most devs bolt the AI onto the CRM as an afterthought, which tanks performance when 50+ users are typing at once. I'd start with LangChain agents that cache embeddings in Redis, so the CRM queries stay under 200ms even during peak load. Ready to start immediately.
₹25,000 INR in 4 days
2.4
2.4

✅✅✅✅Hi, there.✅✅✅✅ Your project excites me! I specialize in building seamless website-app integrations with AI layers and robust CRMs. I am confident in delivering your project within the specified timeframe with top-notch quality. Let's connect and discuss further. Please take a look at my profile. This project involves creating a responsive website and cross-platform mobile app with tight integration between AI, CRM, and business automation workflows. The tech stack aligns perfectly with my expertise, and I am eager to collaborate with you to bring your vision to life. I am committed to not only meeting but exceeding your expectations. I will ensure thorough testing, documentation, and smooth handover of the project to you upon completion. Looking forward to connecting with you for a fruitful collaboration. Best Regards, Oleksandr
₹25,000 INR in 7 days
1.7
1.7

Having worked with various businesses and startups in transforming their innovative ideas into robust digital solutions, I believe I am tailor-made for your AI Web & Mobile App project. My holistic skill set in Full-Stack Development, UI/UX Design, API Integration, and Business Automation perfectly aligns with the requirements you've laid out. Over the years, I've developed and deployed production-ready applications spanning across different verticals using a flexible tech stack—React/Flutter + Node/Express/Django, PostgreSQL/MongoDB,—which are not only reliable but scalable as well. Given your preference for tight integration between various components and platforms, my expertise in CRM Development would significantly contribute to the seamless performance of data migration tasks. Moreover, my affinity to ensure high performance and minimum response time directly resonates with your acceptance criteria – wherein sub-2 second response times on AI prompts are key. My efficient grip on Twilio/WhatsApp Business APIs helps me guarantee zero failed WhatsApp sends on the stipulated test window. Above all this, my clean codes contribute to ensuring better Lighthouse scores (90+). I am confident that my skills and experiences will help transform your project from an idea into a powerful reality. Let us connect to discuss more about timelines and milestones. Together we can build an extraordinary product while accelerating your business growth!
₹25,000 INR in 7 days
1.4
1.4

Jaipur, India
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