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Summary We are looking for a highly skilled Full Stack Developer with 5+ years of experience in Web and Mobile Application Development using React.js, Node.js, MongoDB, and Generative AI technologies. The ideal candidate should have strong expertise in building scalable web and mobile applications, integrating AI-powered features, and handling both frontend and backend development independently. Responsibilities * Develop responsive web applications using React.js * Develop mobile applications and APIs for scalable platforms * Build backend APIs and services using Node.js and [login to view URL] * Design and manage MongoDB databases * Integrate Generative AI / LLM APIs such as OpenAI * Develop AI-powered features like chatbots, automation systems, AI workflows, and content generation * Debug, optimize, and maintain existing applications * Deploy and manage applications on Ubuntu/AWS servers when required Required Skills * 5+ years of experience in Full Stack Development * Strong expertise in React.js * Strong expertise in Node.js & [login to view URL] * Experience with MongoDB * Experience in Web & Mobile Application Development * JavaScript / TypeScript * REST API Development * Generative AI / OpenAI API Integration * Git & GitHub Preferred Skills * React Native / Mobile App Development * Docker * AWS / VPS Deployment * Authentication & Role-Based Access * Prompt Engineering * AI Workflow Automation * Performance Optimization What We Expect * Clean and maintainable code * Strong problem-solving skills * Good communication * Ability to work independently * Timely delivery of tasks Project Details * Long-term opportunity * Multiple ongoing projects * Flexible working hours To Apply Please share: 1. Your relevant experience 2. Similar web/mobile projects you have worked on 3. Experience with AI/LLM integrations 4. Your availability 5. Expected hourly/monthly rate Pay Check 1) $4.00 - $10.00 per hour 2) I am willing to pay higher rates for the most experienced freelancers 3) Duration depends on complexity, speed and team size
Project ID: 40467394
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67 freelancers are bidding on average ₹593 INR/hour for this job

As a seasoned full-stack developer with over 5 years of experience, my primary goal has always been to build exceptional web and mobile applications that surpass industry standards. With profound mastery in React.js, Node.js, and MongoDB - which are the bedrock of this project - I am confident that I can deliver fast, scalable, and robust solutions for your needs. What sets me apart is my hands-on knowledge with generative AI technologies like OpenAI. I have successfully integrated AI-powered features into applications, including chatbots, automation systems, AI workflows, and content generation capabilities. This makes me a perfect fit for your venture which seeks to leverage the power of AI for optimal user experience. In addition to my technical expertise and ability to work independently, my aptitude for clean code and problem-solving ensures I can deliver maintainable products that thoroughly meet your requirements. My past extensive works on web/mobile apps with functionalities such as GPS tracking and Audio/Video streaming align directly with some similar projects you've mentioned. My availability is quite flexible and I'm willing to negotiate rates for a long-term opportunity like this. Let's connect!
₹750 INR in 40 days
6.6
6.6

Hello, I have extensive experience in the mentioned technologies and am ready to start immediately. Let’s connect via chat to discuss the project requirements further. Thank you, Jignesh
₹750 INR in 40 days
5.3
5.3

Hello, Your requirement is a strong match for my experience in full-stack web/mobile development and AI-powered applications. I have experience with: * React.js + Node.js/Express * MongoDB database design * REST API development * React Native mobile apps * OpenAI/LLM integrations * Authentication and role-based systems * AWS/VPS deployments * AI chatbots, automation, and workflow tools I’ve worked on SaaS platforms, admin dashboards, AI-powered systems, and scalable web/mobile applications with clean and maintainable architecture. One thing I focus on is building AI integrations in a modular way so workflows and prompts can scale easily without major rewrites later. Availability: Immediate and open for long-term collaboration. A few quick questions: 1. Are the current projects more web-focused or mobile-focused? 2. Is there an existing development team? 3. Which AI features are highest priority right now? I’d be happy to discuss the workflow and project structure further. Thanks, Abhishek
₹500 INR in 40 days
5.5
5.5

Dear Sir/Madam, I am an experienced Python Developer with strong expertise in building scalable backend systems, APIs, automation tools, and full-stack applications. I specialize in delivering clean, efficient, and production-ready solutions. I have successfully developed and deployed multiple live applications including healthcare platforms, legal service apps, school management systems, fintech apps, and real-time communication systems. My Core Python Expertise ✔ Django & Django REST Framework ✔ FastAPI (High-performance APIs) ✔ Flask ✔ SQLModel / SQLAlchemy ✔ PostgreSQL / MySQL / MongoDB ✔ Supabase Integration ✔ Authentication (JWT, OAuth) ✔ Payment Gateway Integration (PhonePe, Razorpay, Stripe) ✔ Web Scraping (BeautifulSoup, Selenium) ✔ Automation Scripts ✔ WebSocket & Real-time Systems ✔ Docker Deployment ✔ AWS / VPS Deployment ✔ REST API Design & Optimization What I Can Build For You Secure REST APIs SaaS backend architecture Admin dashboards Real-time chat systems Payment systems Data processing systems Microservices architecture AI/ML API integration Custom business logic systems Recent Project Experience Healthcare booking & wallet system Legal consultation backend platform School ERP & management API Fintech wallet & transaction management Real-time chat application (WebSocket + MQTT) Location-based services & geo APIs
₹500 INR in 40 days
4.8
4.8

With over 5 years of experience in Full Stack Development, my expertise resonates well with your requirements. My proficiency stretches across all the major technologies mentioned - React.js, Node.js, MongoDB, and Generative AI technologies. I have successfully deployed web-based and mobile applications on scalable platforms using these tools. Moreover, I've integrated numerous AI-powered features into projects such as chatbots, automation systems, AI workflows, and content generation with OpenAI LLM APIs. Apart from core development skills, my diversified experience stands testimony to my adaptability to various projects. Being a strategist as well as a developer, I can provide reliable insights that can help to streamline the operations and improve efficiency for the application. This is proven by my prior work on ERP systems and Custom Portals. I am well-versed in handling both front-end and back-end tasks independently and have strong problem-solving capability which is crucial for handling complex functionalities. Let's connect to discuss your needs in detail.
₹575 INR in 40 days
4.1
4.1

Hello, I see you're in search of a Full Stack Developer to create AI-integrated applications. Your need for scalable web and mobile solutions using technologies like React.js, Node.js, and MongoDB aligns perfectly with my background. With over 12 years of experience, I have successfully built numerous responsive applications that integrate AI features such as chatbots and automation systems, utilizing Generative AI APIs including OpenAI. My proficiency extends to REST API development and cloud deployments on AWS, ensuring robust backend support. I’ve also worked on similar projects where I developed mobile apps using React Native and optimized performance through clean coding practices. My strong problem-solving skills and commitment to timely delivery will help ensure the success of your ongoing projects. Could you share more about the specific AI features you envision for these applications? Looking forward to collaborating! Best regards, [Your Name]
₹750 INR in 7 days
3.5
3.5

With over a decade of experience in Full Stack and Mobile App Development, I have amassed a skillset that aligns perfectly with your project needs. In particular, my proficiency with React.js, Node.js, MongoDB, and Generative AI would greatly contribute to building scalable and intelligent applications that exceed your expectations. Having delivered more than 400 successful projects, I deeply understand the importance of clean code, timely delivery, and strong problem-solving abilities. I can confidently say that I've tackled projects similar to yours in the past. For example, I’ve developed web and mobile applications with integrated AI workflows and automation systems for various industries. Additionally, I've effectively utilized APIs such as OpenAI to integrate content generation features with outstanding success. What sets me apart is my dedication to delivering end-to-end solutions and my adaptability as a developer. Whether it's designing and managing databases or deploying applications on Ubuntu/AWS servers, I handle tasks independently while ensuring the final product meets the highest industry standards. My reasonable hourly rate of $[YOUR HOURLY RATE] combined with my rich experience makes me an excellent choice for a proven results-driven partnership. Let's discuss in detail how we can overhaul your digital footprint.
₹750 INR in 40 days
2.8
2.8

With a wealth of experience in Full Stack Development, I come equipped with the skills and knowledge necessary to tackle your AI-Integrated Apps project. Having spent over 9 years developing high-quality products, I guarantee precision and professionalism in my work. I specialize in a wide range of technologies, including React.js, Node.js and MongoDB, all of which are vital for this project. My proficiency extends to generative AI as well. I have worked on similar projects that require AI-powered features such as chatbots, automation systems and AI workflows. Additionally, incorporating LLM APIs like OpenAI wouldn't be a problem for me. Another aspect I bring to the table is my strong problem-solving skills. I understand the need for clean and maintainable code, ensuring thorough debugging and efficient maintenance of the application. My commitment to timely delivery and ability to work independently sets me apart as an asset for your team. Allow me to contribute my expertise to make a meaningful impact on your projects.
₹575 INR in 40 days
2.0
2.0

Hi, Your stack is my daily driver — React, Node, MongoDB, and GenAI integrations are exactly where I operate. I'm in for the long haul. What I Bring ⚛️ Frontend — Production-grade React.js apps with clean component architecture, TypeScript, responsive design, and performance optimisation baked in. ? Backend — Scalable Node.js/Express APIs, well-structured MongoDB schemas, role-based auth, and REST endpoints built for maintainability. ? Mobile — React Native cross-platform apps sharing business logic with your web codebase — faster builds, consistent UX. ? Generative AI — This is where I go beyond most full-stack devs. I've integrated OpenAI APIs to build chatbots, automated content pipelines, AI workflows, and LLM-powered features that actually ship and scale. I also use Cursor and Claude daily — meaning I write cleaner code faster, and debug smarter. ☁️ DevOps — AWS/VPS deployment on Ubuntu, Docker containerisation, CI/CD pipelines, environment management. What You Can Expect Clean, documented, reviewable code every PR Proactive communication — no chasing for updates Independent execution — give me a ticket, I'll ship it Long-term reliability across multiple projects I thrive in async, multi-project environments and I'm ready to onboard quickly. Let's jump on a quick call or you can drop me the first task — either works. — Abhay Vaishnav
₹800 INR in 40 days
2.0
2.0

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Royal IT service
₹575 INR in 40 days
0.0
0.0

As you're looking for a Full Stack Developer for AI-Integrated Apps, I believe my diverse skill set and extensive experience make me an excellent fit for the role. Having worked in Mobile App Development, JavaScript, and Node.js for more than five years, I have hands-on expertise in the tech stack you seek. My proficiency with React.js, Node.js, MongoDB, and Generative AI is particularly noteworthy for your project requirements. At your company, my primary aim will be to develop innovative solutions using AI to enhance user experiences. Drawing from my expertise in LLMs such as OpenAI API integrations and REST API Development - I can effectively deliver features like chatbots and automation systems that would revolutionize your web and mobile applications. Having debugged and optimized pre-existing applications throughout my career, I can promptly analyze any inefficiencies within your projects and optimize them to perform at their peak. My commitment to clean code, combined with strong problem-solving aptitude and excellent communication skills will ensure a smooth integration within your team. As someone who values timely delivery and works well both independently and as part of a team, I am eager to lend my expertise to not just this project but also future ones as a long-term collaborator. Building scalable applications has always been my forte; let's create something remarkable together!
₹575 INR in 40 days
0.0
0.0

With over 5 years of experience in full stack development, I specialize in building scalable web and mobile applications using React.js, Node.js & Express, and MongoDB. I’ve successfully integrated Generative AI APIs like OpenAI to deliver features such as chatbots, automation workflows, and content generation. My strengths include: Developing responsive web apps and mobile platforms Designing REST APIs and managing databases Writing maintainable code with JavaScript/TypeScript Implementing unit/feature tests and Git-based workflows Deploying and managing applications on Ubuntu/AWS servers I’m confident in handling both frontend and backend independently, ensuring performance, scalability, and clean architecture. I’d be excited to contribute to your team and deliver AI-powered features that enhance user experience. Sincerely,
₹575 INR in 40 days
0.0
0.0

Hi, Your requirement aligns strongly with my experience in full-stack web/mobile development and AI-powered applications. I have 5+ years of experience working with React.js, Node.js, MongoDB, REST APIs, and scalable application architecture, along with OpenAI/LLM integrations for AI-driven workflows and automation systems. I can help with: • React.js web application development • Node.js/Express.js backend APIs & scalable architecture • MongoDB database design & optimization • AI/LLM integrations using OpenAI APIs • AI chatbots, automation workflows & content generation systems • Mobile app support with React Native • AWS/VPS deployment & server management • Authentication, RBAC & performance optimization I’ve worked on projects involving: • AI chatbot platforms • SaaS dashboards & CRM systems • Marketplace & booking platforms • Automation systems using OpenAI APIs • Web/mobile applications with scalable backend infrastructure Availability: • Available for long-term collaboration • Flexible working hours • Can start immediately Rate: • Comfortable within your mentioned hourly range depending on project scope and complexity. A couple of quick questions: 1. Are your current projects more AI-focused SaaS platforms or traditional web/mobile products with AI features added? 2. Do you already have existing codebases, or will some projects start from scratch? Would love to discuss the opportunity further. Best Regards, Sagar
₹400 INR in 40 days
0.0
0.0

Hi , As im new to this Ive keen interest to learn and develop on real handson experience and understand in deep how the workflow works
₹575 INR in 40 days
0.0
0.0

Hi, I have strong experience with React.js, Node.js, MongoDB, and AI integrations, including OpenAI APIs for chatbot and automation features. I’ve worked on both web and mobile applications and can handle frontend, backend, APIs, and deployment independently. I understand you need scalable applications with clean code and long-term support. I can also help with AI workflows, role-based access, performance optimization, and Ubuntu/AWS deployment when needed. I’m available for long-term collaboration and can share similar projects along with my AI integration experience, availability, and rate details. Please share the project details and I can start right away.
₹800 INR in 40 days
0.0
0.0

Rahul here. I can contribute as a long-term full stack developer across your ongoing projects, handling React, Node.js, MongoDB, and Generative AI integrations independently with clean, maintainable code and reliable delivery. With 10+ years in full stack web and mobile development, I have built scalable platforms with React.js, Node.js, Express, MongoDB, OpenAI API integrations, AI-powered chatbots, automation workflows, and AWS deployments across multiple production environments. My first step would be reviewing your active projects, understanding priorities, and contributing meaningful work from day one without requiring heavy onboarding or supervision. Happy to share relevant project examples, AI integration experience, availability, and expected rate to get the conversation moving. Looking forward to growing with your team on something substantial.
₹525 INR in 40 days
0.0
0.0

Hi there. I’ve recently completed a similar project involving full stack development with React.js, Node.js, MongoDB, and integration of OpenAI APIs, and I can deliver your project efficiently to the same standard. I have over 5 years of experience building scalable web and mobile applications, developing REST APIs, and implementing AI-powered features like chatbots and workflow automation. I’m proficient in React Native, Docker, and AWS deployment, ensuring clean, maintainable code with strong problem-solving and communication skills. Your multi-project, long-term opportunity with flexible hours aligns well with my working style. Could you clarify the preferred tech stack for mobile app development—React Native or another framework? Regards, Riyaaz
₹580 INR in 14 days
0.0
0.0

I HAVE DONE SOMETHING SIMILAR BEFORE! Your need for clean, professional, user-friendly, and seamlessly integrated web and mobile applications with automated AI features aligns perfectly with my expertise. I specialize in full stack development using React.js, Node.js, MongoDB, and integrating Generative AI like OpenAI APIs. With 5+ years tackling scalable platforms, API design, and AI-powered automation, you won’t find someone more aligned with what you’re looking for. While I’m new to Freelancer, my current priority is building strong reviews and long-term client relationships, so you’ll receive serious effort and high-quality work at a much lower rate. Come chat with me, worst case you get a free consultation :) Regards, Toufeeq
₹400 INR in 14 days
0.0
0.0

Hello, I am a Full Stack Developer with 8+ years of experience in building scalable web applications, backend systems, and API integrations using Node.js, NestJS, React.js, MongoDB, and TypeScript. I have strong experience in designing REST APIs, microservices, authentication systems, third-party integrations, and performance optimization. I have worked on enterprise-grade platforms in insurance and logistics domains, handling complex workflows, transactional systems, and scalable backend architectures. I am also familiar with AI integrations and can work with OpenAI APIs to build chatbot, automation, and AI-powered features. My focus is on writing clean, maintainable, and scalable code while ensuring timely delivery and smooth communication throughout the project. I can independently handle both frontend and backend development and would be excited to contribute to your long-term projects.
₹778 INR in 30 days
0.0
0.0

I build exactly this stack end to end: React.js front ends, Node.js and Express APIs, MongoDB schemas, and React Native mobile apps, with generative AI features wired in on top. For your AI side I integrate LLM APIs through a clean service layer with streaming responses, retries, rate limiting and token accounting, so chatbots, content generation and automation workflows stay reliable under load. I handle auth with role based access, Dockerise the services, and deploy to Ubuntu or AWS with proper environment separation and logging. I work independently, commit clean and maintainable code to GitHub, and ship in small testable increments so you see progress continuously rather than one big drop. I am available for the 40 hours a week you mentioned and can start immediately on whichever project is most urgent. Which app or feature would you want me to pick up first?
₹575 INR in 30 days
0.0
0.0

Bhubaneswar, India
Member since May 25, 2026
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