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Senior Full Stack AI Software Engineer (React, Node.js, TypeScript, Python, LLM, RAG) We are looking for an experienced Senior Full Stack AI Software Engineer to build a modern AI-powered web application from the ground up. The ideal candidate should have strong experience across frontend, backend, cloud infrastructure, databases, and AI/LLM integration. This project involves designing and developing a scalable production-ready platform using modern technologies and best practices. Responsibilities - Design and develop a complete full-stack web application. - Build responsive frontend interfaces using React or [login to view URL] with TypeScript. - Develop secure and scalable backend APIs using Node.js (NestJS/Express) or Python (FastAPI). - Design relational database schemas using PostgreSQL or MySQL. - Integrate Large Language Models such as OpenAI, Anthropic Claude, or Gemini. - Build Retrieval-Augmented Generation (RAG) pipelines using vector databases. - Implement authentication and authorization. - Deploy the application using Docker and cloud services. - Write clean, maintainable, and well-documented code. - Perform testing and debugging. - Participate in architecture and technical decision-making.
Project ID: 40625816
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269 freelancers are bidding on average $2,181 USD for this job

As a Top Rated Full Stack Developer with over 14 years in the field, I have amassed invaluable experience across all of the key areas outlined in your project description. From designing and developing web applications, to utilizing AI-powered tools and implementing data security measures, I've shown consistent proficiency in what your project requires. My expertise covers the essential technologies required for your project such as React.js and Node.js. This includes building scalable backend APIs and implementing authentication features you seek. My strong background in databases including MySQL and PostgreSQL will also ensure proper design of your relational schemas. Additionally, having significant exposure to all aspects of Artificial Intelligence (AI) including its integration into applications like yours, means that I can not only successfully deploy this web application using Docker and cloud services but I can optimize it using AI chatbots to improve user experience. And with over 1,600 successful projects under my belt, I am adept at writing clean, maintainable code that's comprehensively documented for easy maintenance.
$2,250 USD in 30 days
8.6
8.6

Hi — Elias here from Miami. I see you’re looking to develop an AI-powered web application. The goal here seems to be creating a robust platform that leverages AI for enhanced user experience and functionality. What usually matters most here is ensuring scalability and maintainability while handling complex integrations with AI models. A common issue in systems like this is managing data flow and ensuring reliable interactions across different components. The tricky part is usually ensuring that your architecture can adapt to future needs without significant rewrites. My approach would focus on a microservices architecture, using Node.js and FastAPI for backend services, which allows for independent scaling of components. I would also prioritize clean API design and efficient state management to enable smooth integration of the AI features. I’ve worked on similar platforms where I implemented LLMs and ensured seamless data handling with MySQL and PostgreSQL. A few questions to better understand the scope: Q1 – What user roles do you foresee, and how will they interact with the AI features? Q2 – Are there specific integrations with third-party services you need to prioritize? Q3 – What are your expectations for scaling as user demand increases? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$2,500 USD in 10 days
8.1
8.1

Hello, We've thoroughly reviewed your project details and are excited about the opportunity to develop an AI-powered web application that meets your specifications. We understand that you're seeking a Senior Full Stack AI Software Engineer to create a robust platform from the ground up, integrating cutting-edge technologies and best practices. We've previously worked on projects requiring a similar blend of frontend and backend development, AI integration, and cloud deployment. Our expertise in AI-native UI development and Retrieval-Augmented Generation systems, using tools like OpenAI and FastAPI, aligns perfectly with your requirements. With over 8 years of experience in AI product development and a track record of delivering top-rated results, we are confident in our ability to design and implement the full-stack application you need. Our skills in React, Node.js, Python, and other relevant technologies ensure a seamless integration of the specified LLMs and cloud services. Let's connect to discuss ...
$5,000 USD in 25 days
7.7
7.7

⭐⭐⭐⭐⭐ Build Modern AI-Powered Web Apps as a Senior Full Stack Engineer ❇️ Hi My Friend, I hope you are doing well. I reviewed your project requirements and see you are looking for a Senior Full Stack AI Software Engineer. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for building AI-powered applications. I will focus on designing a scalable platform using the latest technologies and best practices to meet your needs. ➡️ Why Me? I can easily create your AI web application as I have 5 years of experience in full-stack development, including React, Node.js, TypeScript, and Python. My expertise covers frontend and backend development, cloud services, and database design. I also have a strong grip on AI integration, ensuring your project will be robust and efficient. ➡️ Let's have a quick chat to discuss your project in detail. I can provide samples of my previous work and explain how I can add value to your project. Looking forward to discussing this with you! ➡️ Skills & Experience: ✅ React ✅ Node.js ✅ TypeScript ✅ Python ✅ PostgreSQL ✅ MySQL ✅ Docker ✅ API Development ✅ AI Integration ✅ Cloud Services ✅ Testing & Debugging ✅ RAG Pipelines Waiting for your response! Best Regards, Zohaib
$1,800 USD in 2 days
8.0
8.0

I can assign the senior fullstack developer currently working for the big ai and transformation project for the big insurance company. Your requirements are exactly matching with his expertise let’s connect and I am sure your search will over
$2,250 USD in 7 days
6.7
6.7

Hi, I checked your "AI-Powered Web Application Development" project and it looks like understanding the existing workflow will be important before making any changes. I've worked on similar PHP projects involving python, mysql, node.js, postgresql, docker, full stack development, fastapi, large language model, langchain and prefer delivering work in small milestones so everything stays easy to review and adjust if needed. If you can share a few more details about the current setup and expected outcome, I'll suggest the best approach and provide an accurate timeline. ⭐ 5.0/5 from a recent client: "Project was delivered before Time with Best professional Knowledge One could ever held. Thanks for the support" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$1,800 USD in 36 days
6.4
6.4

Hello!, I am a Florida-based senior software engineer(frontend, backend, ecommerce, etc) with 15+ years of experience building production-grade React, Node.js, TypeScript, Python, FastAPI, PostgreSQL/MySQL systems, including LLM, RAG, and LangChain workflows. I read your project carefully. This is not just “build an AI app” work, it’s about creating a solid, scalable web application that uses AI in a way that is actually useful, fast, and maintainable. That part matters, and I can help you get it right. My approach would be: 1) clarify the workflow and success criteria 2) design the backend/API and data model 3) build the AI pipeline with clean retrieval and prompt logic 4) connect the UI, test thoroughly, and deploy with Docker I’ve built AI dashboards, automation tools, SaaS platforms, and data-heavy apps where performance and reliability mattered. A few relevant examples: - internal AI ops dashboard for a logistics team - RAG knowledge assistant for a consulting firm - customer support automation platform - analytics portal for a subscription business Could you please clarify the following questions to help me better understand the project? 1) What is the main user action you want the AI to handle first: search, chat, summarize, classify, or generate? 2) Do you already have the data source(s) for RAG, or should I help structure ingestion and indexing too? 3) Are you expecting a full production deployment, or an MVP with the core AI workflow first? If you want someone
$2,600 USD in 9 days
5.7
5.7

I am excited about the opportunity to develop an AI-powered web application tailored to your vision! With extensive experience in full-stack development and a strong grasp of modern technologies including React, Node.js, and Python, I am well-equipped to bring your project to life. My approach focuses on creating scalable, production-ready platforms, ensuring not only performance but also the highest standards of security and maintainability. I understand the intricacies involved in integrating Large Language Models and building Retrieval-Augmented Generation pipelines, which are crucial for your project's success. I will ensure that all components, from the responsive frontend to the robust backend and cloud deployment, are well-coordinated. To ensure the best results, How do you envision the balance between frontend and backend complexity in this application? Let's build something remarkable together! Best regards, Talha
$1,500 USD in 13 days
5.4
5.4

With my 5+ years of professional experience and specialized skills in Full Stack development, especially within the sphere of web applications, your AI-powered project would be in good hands with me. I have solid expertise in using the tools and technologies outlined in your project description - React.js, Node.js, TypeScript, Python, LLM, RAG - which will allow me to design and develop a robust back-end and a user-friendly front-end for your application. In addition to my technical skills, I bring a commitment to delivering clean code that is maintainable and optimized - qualities that are critical in any project but even more so when dealing with sophisticated systems like LLM and RAG. I take pride in my ability to turn ideas into reality through code; your project would be another valuable opportunity for me to demonstrate this. With an emphasis on clear communication and punctuality, I aim not just to do a job but to add real value to every project I embark upon. I can assure you of on-time delivery along with complete support throughout the development process. Let's connect and discuss how we can create something amazing together for your AI-powered web application!
$2,250 USD in 7 days
5.4
5.4

With my comprehensive expertise in Full Stack Development, MySQL, Node.js, PostgreSQL and most importantly Python with Django, I bring valuable skills to fully realize your ambition of building an efficient AI-powered web application. Over the years, I have developed a knack for automation that will enable me to deliver fast, scalable and clean code while automating data extraction using different tools like BeautifulSoup, Scrapy and Selenium. My experience in RESTful API Development intricately aligns with your requirement of securing and scaling back-end APIs using Node.js or Python. The project's emphasis on integrating Large Language Models (LLM) such as OpenAI or Anthropic Claude falls right into my area of proficiency. I am particularly adept at developing Retrieval-Augmented Generation (RAG) pipelines using vector databases – a skill that assures my capability to effectively merge advanced AI models with databases. Commitment to writing clean and maintainable code makes for an organized project that ultimately saves time during testing and debugging phases. Moreover, my international experience working with diverse teams will bring an added dimension to your project's technical decision-making process. Attritionally, my passion for delivering quality work with post-deployment support will give you the peace of mind you deserve throughout this endeavour. Choose me and together we can build a robust and cutting-edge platform that revolutionizes your domain!
$2,250 USD in 7 days
5.3
5.3

The biggest risk in a greenfield AI application like this isn’t wiring up React, FastAPI, or an LLM—it’s making sure the RAG layer, data model, and API boundaries are designed correctly early, because changing them later tends to ripple through the entire platform. I’d start by defining the core architecture and data flow first: how data is stored, indexed, retrieved, and passed into the LLM, then build the backend APIs and frontend around those decisions. For RAG, retrieval quality and document chunking matter as much as the model itself, so I’d treat that as a first-class part of the application rather than an add-on. On the backend, I’d keep the AI workflows isolated behind service layers so model providers can be changed without affecting the rest of the system. A small but important detail: with LangChain-based RAG systems, keeping metadata structured from ingestion onward makes filtering and retrieval far more reliable as the dataset grows. One question: do you already have the product requirements and user workflows defined, or is architecture/design expected as part of this engagement?
$2,000 USD in 7 days
5.1
5.1

With your project centered around designing and developing a complete full-stack web application, I'm thrilled to offer my expertise as a seasoned web developer with an emphasis on modern technologies including React, Node.js, and Python. Having built numerous scalable web applications from scratch, I have demonstrated my ability to both utilize and integrate diverse tools such as PostgreSQL, MySQL, OpenAI, Anthropic Claude, among others. Not only do I possess a comprehensive understanding of AI/LLM integration but also bring in over seven years of experience in various aspects of full-stack development including deploying applications using Docker and cloud services. My proficiency in writing clean code and thorough testing will ensure your application meets industry standards for performance, security, and maintainability. As a technology partner to several startups and growing businesses like yours, I truly understand the significance of building systems that cater to long-term business growth. Hence, I not only focus on delivering quality systems but also ensure they are designed for lasting success. Let me be the person who translates your AI-powered web application vision into reality - reliable technology that solves real-world problems and propels your business forward.
$1,500 USD in 10 days
4.7
4.7

Hello, Greetings! I have gone through your project details and we are experienced in this domain. I will send you some case studies regarding ai, ml project. Let’s connect. Thanks Suman
$2,250 USD in 7 days
4.6
4.6

Hi, this is exactly the kind of build where the details matter: a full-stack AI product needs solid architecture, not just feature delivery. I’ve built React and TypeScript frontends, Node.js and Python backends, and production integrations with OpenAI-style APIs, PostgreSQL, Docker, and cloud deployments. I’m comfortable designing clean APIs, auth flows, and RAG pipelines that stay maintainable as the product grows. My approach is to define the core user flow first, then shape the data model, API layer, and LLM integration around it. I’d keep the codebase modular, add testing early, and make sure the app is ready for deployment and iteration. If you want someone who can handle both the product logic and the technical foundation, I’d be glad to discuss the build. Best regards, Gabriel
$1,500 USD in 20 days
4.5
4.5

As an experienced Full Stack Developer, my skillset aligns perfectly with your project's needs. I specialize in building robust and scalable web applications while ensuring optimal performance and security across the stack. I am well-versed in the technologies you require - React, Node.js, TypeScript, Python, PostgreSQL, and more. In fact, in my 7+ years of experience developing AI-powered solutions for various clients worldwide, I have consistently integrated LLMs such as OpenAI and crafted RAG pipelines using vector databases. What sets me apart is my commitment to quality code and clear communication. I believe in keeping you updated every step of the way, maintaining realistic timelines so that there are no surprises. Moreover, my extensive experience in delivering on-time projects (over 98%!) will ensure that your product is ready by the deadline without compromising on its quality. With a strong ability to think beyond the code and make meaningful technical decisions that save both time and money, I bring more than just development skills to your project. My aim is to build not just something functional but a digital solution that truly works for your unique needs. So let's have a conversation about your vision and how we can bring it to life. Let's
$2,500 USD in 15 days
4.5
4.5

Hi, I'd be happy to build your AI-powered platform from the ground up. I have experience with React, FastAPI/Node.js, PostgreSQL, Docker, and LLM integrations including RAG-based applications. I can help not only with implementation but also with architecture, scalable system design, and production deployment. To better estimate the scope, could you share the core business workflow, primary AI use case, preferred LLM/cloud provider, and whether the product requirements are already defined? Looking forward to discussing your vision and delivering a robust, production-ready solution.
$2,800 USD in 15 days
4.1
4.1

Hi, I’d love to help build your AI-powered web application and bring your vision to life with a secure, scalable, and production-ready solution. I have **8+ years of experience** as a FULL STACK developer specializing in AI-powered applications, SaaS platforms, APIs, and modern web technologies. My team and I have successfully completed **1000+ projects**, delivering clean architecture, high performance, and long-term reliability. ### How I'll Approach Your Project • Build a modern, responsive frontend using React and TypeScript • Develop secure and scalable backend APIs with Node.js or Python (FastAPI) • Integrate OpenAI, Anthropic Claude, Gemini, or other LLMs based on your requirements • Design a clean, maintainable, and well-documented architecture for future scalability • Implement secure authentication, authorization, and role-based access control • Optimize application performance, API response times, and database efficiency • Containerize the application with Docker and assist with cloud deployment • Perform thorough testing before launch and provide ongoing support I focus on building AI applications that are fast, secure, scalable, and easy to maintain. Every solution is developed with clean code, modular architecture, and future growth in mind, ensuring your platform can evolve as your business expands. I can start immediately and would be happy to discuss your technical requirements, AI workflows, and product roadmap in detail. Best, Shaili
$2,250 USD in 7 days
4.2
4.2

My name is Kajal, and I'm the lead software engineer at a reputable IT company with over 7 years of experience. My team and I specialize in creating scalable and user-friendly solutions catered specifically to unique business goals. Our developers have extensive skills in Full Stack Development, MySQL & Python - exactly what your project requires. For your AI-Powered Web Application Development project, we bring more to the table than just coding proficiency. We understand that your goal is not only to create an application but also to design and develop a production-ready platform. With our strong background in cloud infrastructure, databases, and AI/LLM integration, we can ensure that your application will be both secure and scalable. Furthermore, our commitment to clean code and thorough testing guarantees that your platform will be maintainable and efficient in the long run. Lastly, the skills we possess not only adhere to all of your specific requirements but also extend past it- providing you with a valuable resource who can contribute more than just basic functionalities. I'm confident in my abilities and our team's collective skills; partnering with us means receiving on-time delivery, high-quality code, transparent communication throughout the process, and continued support beyond project completion
$2,250 USD in 7 days
4.5
4.5

Hello - Ricardo from Buenos Aires here. I've handled *Similar Challenges* before and also I am completely *Confident* that I am the *Right Person* for this project. I understand you need a modern AI web application with strong full-stack architecture and reliable LLM integration. I can build a scalable solution combining React, backend APIs, databases, Docker, and AI workflows with a clean development approach. My creative plan is to create a flexible system with secure APIs, efficient RAG pipelines, and smooth user experiences so the platform can grow confidently. As we move forward, let us remember that powerful AI solutions need both smart technology and a simple user journey. I'd love the opportunity to bring your idea to life. Feel free to message me anytime - I'm ready to get started. Looking forward to hearing from you!
$1,650 USD in 13 days
4.1
4.1

Hi, Aashiq here from Cape Town, South Africa. This project instantly caught my eye, so I had to reach out. I see you’re looking for a Senior Full Stack AI Software Engineer to build a scalable production-ready platform. With a focus on integrating Large Language Models and developing secure backend APIs, this aligns perfectly with my expertise. I’ve helped numerous businesses thrive by creating high-performing web applications using React, Node.js, and Python. My experience with database design and cloud deployment ensures I can deliver the robust solution you need. Feel free to ask for samples of my successful projects. Based on what you mentioned, here is how we would approach the project: - Start with a detailed architecture plan. - Develop the frontend using React with TypeScript for a seamless user experience. - Build secure backend APIs and integrate AI models effectively. - Ensure thorough testing and documentation for maintainability. You can expect clear communication throughout, delivering a user-focused solution optimized for performance using the latest technologies. Best Regards, Aashiq
$2,700 USD in 7 days
3.9
3.9

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