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Senior Full-Stack Developer (Python / React / AWS) Overview We are looking for a Senior Full-Stack Developer to design, build, and scale modern web applications. You’ll work across the stack—from backend APIs and cloud infrastructure to frontend experiences—while also contributing to AI-powered features using agents, AWS Bedrock, and Retrieval -Augmented Generation (RAG). Responsibilities - Design, develop, and maintain scalable backend services using Python and FastAPI - Build and optimize frontend applications using React - Architect and deploy applications on AWS - Integrate payment systems such as Stripe - Build and maintain user management systems including SSO - Design and integrate AI-driven features including agents, AWS Bedrock, and RAG pipelines Required Qualifications - 2-3 years experience as a Full-Stack Developer - Strong proficiency in Python and FastAPI - Strong experience with React - Solid experience with AWS - source code version control and CI/CD - Experience integrating Stripe or similar payment systems - Strong understanding of authentication, authorization, and SSO - Experience building AI solutions using LLMs (OpenAI, Claude, etc..) Nice to Have - Experience with AWS Bedrock - Experience building RAG systems - Experience with AI agents What We Offer - Work on cutting-edge AI-powered products - High ownership and technical influence - Collaborative engineering culture
Project ID: 40207761
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Active 11 days ago
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166 freelancers are bidding on average £12 GBP/hour for this job

Hi there, I am Muhammad Awais, a full-stack developer with 2-3 years’ experience in Python/FastAPI, React, and AWS. I design scalable backends, robust APIs, and responsive UIs, with Stripe payments and secure SSO. I will build AI features using LLMs, AWS Bedrock, and RAG pipelines, focusing on performance, security, and maintainability. My approach is modular: clear API contracts, robust auth, CI/CD, and a solid AWS setup (IAM, VPC, monitoring). I’ll start with an MVP plan targeting core services, Stripe integration, SSO, and an AI demo, then iterate toward production readiness. What is the target timeline for the MVP and full-scale launch?\n\nDo you have an existing codebase and documentation, or is this greenfield?\n\nWhich AWS services do you plan to rely on (EC2, ECS/EKS, Lambda, S3, RDS, Secrets Manager, IAM) and in which region(s)?\n\nDo you want Bedrock/RAG integration in the initial scope or as a follow-up phase?\n\nWhich LLM providers are acceptable (OpenAI, Claude) and any rate or cost constraints?\n\nWhat Stripe features are needed (Checkout, Payment Intents, subscriptions) and currencies involved?\n\nHow should SSO be implemented (Okta, Cognito, Google) and what are provider constraints?\n\nWhat security/compliance requirements apply (PCI-DSS, data residency, encryption standards)?\n\nWhat would success look like in the first 90 days, and how will you measure it? Best regards,
£18 GBP in 22 days
8.1
8.1

Hello, I understand you’re looking for a Senior Full-Stack Developer to build and scale modern web applications with Python/FastAPI backends, React frontends, AWS deployment, and AI-powered features using LLMs, agents, and RAG pipelines. I’m a good fit because I regularly deliver full-stack solutions across React and FastAPI, integrating secure authentication, payment systems like Stripe, and cloud deployment on AWS while implementing AI-driven features and maintaining clean, maintainable code. My working approach: -> Review requirements, architecture, and AI scope -> Build FastAPI backend and React frontend -> Implement auth, SSO, and payment integration (Stripe) -> Deploy and maintain AWS infrastructure with CI/CD -> Integrate AI features using LLMs, RAG pipelines, and agents I ensure all work is tightly scoped, thoroughly tested, and follows best practices to maintain stability, security, and long-term maintainability. I’ve built full-stack applications in production environments where reliable cloud deployment, AI functionality, and robust user management were essential. Which AI features or LLM integrations should be prioritized in the first phase? Best Regards, Niral D
£10 GBP in 40 days
7.9
7.9

With over a decade of experience in designing, implementing, and scaling web applications, I am the seasoned Full-Stack Developer you need for this project. As a specialist in Python, FastAPI, and React -- key technologies you mentioned -- I can adeptly build and optimize both backend services and frontend interfaces for your web app. What sets me apart is my prowess with AWS Bedrock and RAG systems—a valuable skillset rarely found in Full-Stack Developers as it bridges the gap between AI and application development. Being knowledgeable in LLMs (OpenAI, Claude, etc.), I can contribute significantly to enhancing your AI-driven features using AWS Bedrock and RAG pipelines. Moreover, my familiarity with payment integrations (Stripe) and user management systems including SSO align well with your requirements. Also, CICD discipline is deeply ingrained in my development process which ensures constant code-version control and seamless build deployments. If chosen, you'd also get a dedicated collaborator—eager to leverage his extensive experience to deliver frontier-pushing products. Let's revolutionize your web app together!
£10 GBP in 40 days
7.0
7.0

I HAVE READ YOUR REQUIREMENTS CAREFULLY AND UNDERSTAND THE FULL SCOPE OF THIS ROLE AND THE AI-DRIVEN PLATFORM YOU ARE BUILDING. I have 10+ years of experience working as a full-stack developer with strong hands-on expertise in Python (FastAPI), React, and AWS. I’ve designed and scaled backend APIs, built secure authentication and SSO flows, integrated Stripe payments, and deployed production systems using CI/CD pipelines on AWS. I also have practical experience implementing AI features using LLMs, including RAG pipelines, agent-based workflows, and cloud-hosted inference (OpenAI, Claude, and AWS-native services). I’m comfortable owning features end-to-end—from architecture to deployment—and collaborating in fast-moving teams. I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE; WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PUBLISHING ON STORES. I am confident my background aligns well with your technical stack and long-term vision, and I can contribute immediately. I eagerly await your positive response. Thanks.
£8 GBP in 40 days
6.4
6.4

With over 8 years of hands-on experience in Full-Stack Development, I believe I am the perfect fit for your project. My versatility in both backend (Python and FastAPI) and frontend (React) technologies aligns perfectly with your needs. Moreover, my proficiency in AWS, source code version control, and CI/CD is an added advantage for this task. Throughout my career as a Full-Stack Developer, I have consistently delivered high-quality projects that are scalable and proficiently integrated with various systems like the payment gateway system Stripe. Additionally, my solid understanding of authentication, authorization, and SSO can ensure secure user management systems for your project. Apart from my core skills, the "Nice to Have" qualifications listed fascinatingly resonate with my interests. Having built AI solutions using LLMs like OpenAI and Claude will enable me to quickly integrate your required AI-driven features with ease. With me on board, you'll have a seasoned hand who is not only comfortable working with AWS Bedrock but also experienced in building RAG systems and AI agents if necessary. Let's leverage my expertise to create some cutting-edge AI-powered products together! With Regards!
£10 GBP in 40 days
6.7
6.7

Hello I design and scale production-ready web apps where Python/FastAPI, React, and AWS actually work together—clean APIs, fast frontends, and cloud setups that do not fall apart under load. I have built Stripe payments, SSO-based auth systems, CI/CD pipelines, and recently shipped LLM-powered features using agents and RAG (OpenAI/Claude, vector search, retrieval workflows), so the AI layer is practical, not experimental. If you want a senior developer who thinks in systems, ships reliably, and takes ownership of both architecture and execution, I would love to help build this. Best Regards, Arzoo Farooq
£10 GBP in 40 days
6.4
6.4

I am confident that my skills in Python, Amazon Web Services, Git, Stripe, and OAuth align perfectly with the requirements of the "Full-Stack Developer Needed (Python/React/AWS Experience)" project. I am eager to work on cutting-edge AI-powered products and bring my 15 years of experience to the table. Let's discuss the project scope and budget further, as I am committed to delivering high-quality results within your requirements. Please review my profile for a comprehensive look at my work history. Looking forward to the opportunity to collaborate.
£7 GBP in 3 days
5.9
5.9

React, AWS, front-end, back-end, AI — the key terms to my profession are embedded throughout your description. As a full-stack developer with over a decade of experience, I have thrived in complex projects of varying scales and have deep proficiency in all the technologies you require. Fluency in Python and FastAPI? Check. Solid AWS understanding? Undoubtedly. React? A breeze! In fact, in the midst of developing applications like yours, I have integrated payment systems like Stripe and user management systems, including Single Sign-On (SSO). My team at WellSpring Infotech has built B2B and B2C solutions across sectors like eCommerce and even Fintech that mandated impeccable attention to detail and data security — aspects critical to your project as well. Moreover, we take pride in delivering work that not only astutely meets business needs but does so with durability and futuristic element intact. Having worked extensively on AI-driven workflows like AWS Bedrock and RAG pipelines, I can offer you not just technical know-how but valuable insights into best practices too. With me onboard, be assured of high ownership and collaborative engagement throughout your project life cycle. I view my clients as partners in innovation and their success is my endorsement letter; let's start planning your success today!!! Thank you!!!
£10 GBP in 40 days
6.0
6.0

Hi there, We’ve built several AI-driven products, including a web app that uses LLMs to generate personalized email templates for sales teams. We also developed a Chrome extension that integrates with Gmail to send these emails directly, allowing users to manage multiple email accounts and track open rates. With 15 years of experience, I’ve worked extensively with Python, JavaScript, and PHP, and I’ve led multiple startups as a CTO. I’m equally comfortable with front-end frameworks like React and Vue, and I’ve integrated various payment gateways, including Stripe and PayPal. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. I’m eager to learn more about your exciting project. Best regards, Adil
£10 GBP in 40 days
6.0
6.0

Hello, I recently built and scaled a Python (FastAPI) + React SaaS platform with AWS infrastructure, Stripe subscriptions, role-based access control, and AI-powered features using OpenAI and Claude with RAG pipelines. The system handled authentication, SSO, CI/CD, and cloud deployment end-to-end. For your role, I can design scalable FastAPI services, build high-performance React interfaces, architect on AWS, integrate Stripe, and implement secure auth/SSO. I also have hands-on experience building LLM-powered features, agents, and retrieval pipelines to support intelligent search and automation. I can start your project immediately and am committed to delivering the highest quality and fastest possible turnaround. Best regards, Elenilson
£10 GBP in 40 days
5.8
5.8

Not only do I possess the exact skills and experience required for this project, but I have also spent over two years perfecting my full-stack development skills, with a particular focus on Python, FastAPI, React, AWS, and Stripe integration. My proficiency in source code version control and continuous integration/delivery aligns seamlessly with the modern demands of scalability and reliability. Moreover, I am no stranger to AI solutions. Having worked extensively with LLMs like OpenAI and Claude, I hold a deep understanding of their integration to build the advanced features you seek such as those with agents, AWS Bedrock, and RAG pipelines. Additionally, my experience in dealing with authentication, authorization, and SSO bolsters my capability in designing reliable user management systems needed for the project. Choosing me means gaining access to an engineer who not only possesses the technical aptitude necessary for this endeavor but is also keen on collaborative cultures. With me, you can be confident that your project will be handled with both an unwavering attention to detail and a deep commitment to your vision. I'm excited for us to work together!
£8 GBP in 40 days
6.0
6.0

I can contribute as a senior full-stack developer with strong experience in Python/FastAPI, React, and AWS, building and scaling production-ready web applications. I’ve implemented secure user management with SSO, integrated Stripe payments, and deployed CI/CD pipelines on AWS-backed infrastructures. I also have hands-on experience designing AI-driven features using LLMs, including RAG pipelines and agent-style workflows, and can extend this into AWS Bedrock where needed. I’m comfortable taking high ownership, shipping clean code, and collaborating closely on AI-powered products.
£8 GBP in 40 days
6.1
6.1

Hello, HAVE HANDS-ON EXPERIENCE WITH SUCH PROJECT I have 9+ years of proven experience building and scaling full-stack applications with Python, React, and AWS, and I clearly understand the requirements for secure, AI-enabled, production-ready systems. The goal is to deliver scalable web applications with clean APIs, strong auth, and AI-powered features that are reliable, secure, and user-centric. -->> FastAPI backend services & scalable API design -->> React front-end with clean state management -->> AWS architecture, CI/CD, and cloud deployment -->> Payments (Stripe), SSO, and AI/RAG integrations My approach is clean architecture, secure APIs, efficient AWS integration, and an agile workflow with clear ownership. In chat, I have a few questions about your current AWS setup and AI stack to proceed further. I would approach your project by starting with wireframes and API contracts, then implementing backend, frontend, and AI features in parallel. I can successfully implement this from start to finish—let’s build something scalable that truly stands out. Thanks & regards Julian
£6 GBP in 40 days
6.2
6.2

Hello there, ●●●Python Expert is Here●●● I’ve checked your project – “Full-Stack Developer Needed (Python/React/AWS Experience)” And read the description carefully. As a professional Python Expert I’m damn sure that I can “Design, build, and scale a modern web applications by using Python for you” as you required. I’ve done a lot of Python project based on ✔Django, ✔Pandas, ✔Flask, ✔FastAPI, ✔Jupyter Notebook, ✔Automation, ✔Selenium & etc in various platform. You can visit my profile and check the Reviews of my previous all Python Project so that you can get the idea about my knowledge and skills. I’m ready to be hired or ready to be awarded as I can start this task Right Now. So, I’m waiting for your response in chat box. Warm Regards! Eng. Bablu Mondol
£10 GBP in 40 days
5.8
5.8

Hi, I’m a Senior Full-Stack Developer with strong experience building modern web applications using Python/FastAPI, React, and AWS, including AI-powered features. I’ve designed and deployed scalable backend APIs, integrated payment systems like Stripe, implemented SSO and user management, and contributed to LLM-based AI solutions, including RAG pipelines and agents. I’m comfortable working across the stack—frontend, backend, cloud, and AI integration—with CI/CD workflows and version control. I have hands-on experience with AWS services, deployment automation, and delivering performant, secure applications. I thrive in collaborative teams and enjoy high ownership, building cutting-edge solutions that combine web, AI, and cloud capabilities. Happy to provide examples of recent projects combining FastAPI, React, Stripe, and AI-driven workflows. Thanks
£10 GBP in 40 days
5.6
5.6

⭐Hi there, I’m ready to assist you right away!⭐ I believe I’d be a great fit for your project since my experience aligns perfectly with your requirements. With 3 years in Full-Stack development, I excel in Python, React, and AWS, ensuring robust backend services, optimized frontend applications, and seamless deployments on AWS. I’ve successfully integrated payment systems like Stripe, built user management systems, and designed AI-driven features to enhance user experiences. This project offers an exciting opportunity to leverage AI technologies and cutting-edge tools to deliver exceptional web applications. If you have any questions, would like to discuss the project in more detail, or would like to know how I can help, we can schedule a meeting. Thank you. Maxim
£14 GBP in 34 days
5.4
5.4

You need someone who can move across backend, frontend, AWS, and AI features without creating fragile systems. Most projects like this fail when AI features and core product logic are bolted together instead of designed properly from the start. I work daily with Python and FastAPI backends, React frontends, and AWS deployments. I have built production systems with auth, payments, and LLM powered features, so I am comfortable owning features end to end. What I can handle FastAPI services with clean architecture and async performance. React frontends with strong state management and API integration. AWS deployment, CI/CD, and environment setup. Stripe integration and subscription logic. Auth and SSO with proper security and role handling. AI features using LLM APIs, RAG pipelines, and agent style workflows. I focus on shipping stable features quickly while keeping code maintainable and well structured for scale. Availability Can start immediately and work long term with high ownership. Happy to discuss current architecture and what AI features you want to ship first.
£15 GBP in 40 days
5.4
5.4

With a decade of experience as a Full-Stack Developer, I can confidently say that I am proficient in all aspects of the project you've outlined. The technologies you've mentioned are in my regular wheelhouse - Python, React, and AWS Bedrock are all tools I am confident with. Moreover, I am also experienced in building and maintaining scalable backend services using Python as well as utilizing FastAPI. In addition to my Full-Stack skills, I have extensive experience integrating payment systems such as Stripe and building user management systems including SSO. Authentication, authorization, and Single Sign-On were central components to many of my previous projects. Moreover, I have practical knowledge of AI too. I have built AI-powered applications integrating machine learning algorithms over data processed on Python ensuring fine-tuned control over API endpoints using OpenAPI. Throughout my career, I have emphasized reliability and maintainability in my code while prioritizing quality and performance. But more than just technical ability, I believe my greatest strength is my dedication to client satisfaction. I aim for clear communication, fast response times, and deliverables that consistently align with both your needs and your expectations. With Regards!
£10 GBP in 40 days
5.5
5.5

Hello, I understand that you are seeking a Senior Full-Stack Developer to design, build, and scale modern web applications with expertise in Python, React, and AWS. I have over three years of experience in full-stack development, specializing in Python with FastAPI and delivering responsive frontend applications using React. My background includes architecting and deploying scalable applications on AWS, integrating payment systems like Stripe, and implementing user management features with single sign-on (SSO), alongside developing AI-driven solutions utilizing AWS Bedrock and RAG. I am confident in my ability to contribute effectively to your cutting-edge AI-powered projects. Regards, Davide
£36 GBP in 35 days
4.9
4.9

Drawing on my 2-3 years of experience as a Full-Stack Developer, I would be an ideal fit for your project. My proficiency in Python and FastAPI aligns with your need for scalable backend services, while my hands-on experience with React attests to my ability to build and optimize frontend applications. Furthermore, my solid experience with AWS ensures I can properly architect and deploy applications on the platform. Additionally, my knowledge of source code version control, CI/CD processes, integrating Stripe or similar payment systems, and creating user management systems including SSO correspond directly to your project scope. Notably, my diverse background expands beyond Full-Stack Development – I've got hands-on experience building AI solutions using LLMs like OpenAI and Claudefor creating AI-driven features. With these skills, I am confident I can successfully design, build, deploy and scale the modern web applications you have in mind—complete with the necessary functionality such as integrating a payment system like Stripe. My commitment to delivering results and taking ownership of my work aligns well with your collaborative engineering culture.
£8 GBP in 40 days
5.1
5.1

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