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I have a fully completed custom e-commerce web application built with: - Frontend: React 19 and Tailwind - Backend: FastAPI - Database: MongoDB I need a freelancer to perform thorough testing and review before launch. Testing Requirements: - Unit Testing: Ensure individual components work as intended. - Integration Testing: Verify interactions between frontend, backend, and database. - UI/UX Testing: Assess user interface and experience for any improvements. Ideal Skills: - Strong knowledge of React, FastAPI, and MongoDB. - Experience with unit, integration, and UI/UX testing. - Detail-oriented and able to provide a comprehensive feedback report. Please provide examples of similar work done.
Project ID: 40540395
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Hello! I am genuinely excited to help you with thorough testing and review of your e-commerce application. I have strong experience with React, FastAPI, and MongoDB, including unit testing, integration testing, and UI/UX analysis. For this project, I will perform comprehensive unit testing on React components and FastAPI endpoints. I will conduct integration testing to verify smooth interactions between the frontend, backend, and database. I will also assess the UI/UX for any improvements in navigation, responsiveness, and usability. I will provide a detailed feedback report with actionable recommendations. Do you have any specific user flows or critical features to prioritize in the testing? Should the UI/UX testing include accessibility checks or focus on visual design? Let me know your answers. I can start right away. Ricardo
$120 USD in 2 days
3.9
3.9
72 freelancers are bidding on average $121 USD for this job

Hello, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on JavaScript, Website Design, Testing / QA, NoSQL Couch & Mongo, AngularJS Lets connect in chat so that We discuss further. Regards
$190 USD in 7 days
7.6
7.6

Hi, We reviewed your requirements and understand that your application is feature-complete, and the priority is to validate its stability, performance, and user experience before launch. The focus will be on identifying issues across the React frontend, FastAPI backend, and MongoDB database while providing clear, actionable feedback. Our approach begins with a structured testing plan covering functional workflows, API interactions, database consistency, and UI/UX. We'll verify that each layer works independently and together, then document all findings with recommendations and severity levels. Our process includes: • Unit Testing Review • Frontend & Backend Integration Testing • API Validation & Error Handling Checks • MongoDB Data Integrity Testing • UI/UX & Responsive Testing • Cross-Browser & Device Testing • Performance & Regression Testing • Bug Reporting with Reproduction Steps • Improvement Recommendations • Final QA Report & Handover A couple of questions: • Do you already have automated test suites (Jest, Vitest, Pytest, etc.), or should the testing focus primarily on manual validation? • Will testing be performed on a staging environment with production-like data? Once we review the application and testing environment, we can perform a comprehensive QA cycle and deliver a detailed report with prioritized findings and recommendations. Doomshell Team
$240 USD in 7 days
7.7
7.7

Greetings, I see you're looking for someone to thoroughly test and review your custom e-commerce web application built with React, FastAPI, and MongoDB. This is an important step before the launch, and I can help ensure everything functions smoothly. My approach would include conducting unit tests to verify each component, integration tests to check how the frontend and backend communicate, and UI/UX testing to enhance the user experience. With a solid background in React and FastAPI, along with hands-on experience in testing, I can provide detailed feedback to help refine the application. I understand the importance of attention to detail in this process, and I’m committed to delivering a comprehensive review that meets your needs. Best regards, Saba Ehsan
$150 USD in 3 days
7.3
7.3

Hello, I see you need someone to thoroughly test and review your custom e-commerce web application built with React, FastAPI, and MongoDB. My approach would involve performing unit tests to ensure all components function correctly, followed by integration tests to check the seamless interaction between the frontend, backend, and database. Finally, I would focus on UI/UX testing to enhance the user experience based on my findings. With 7+ years of experience in web development and testing, I have a strong grasp of the technologies you're using, which allows me to identify any potential issues quickly. I’m detail-oriented and will make sure to provide you with a comprehensive feedback report to guide the final stages of your launch preparations. Could you share any specific areas of the app where you feel testing is particularly critical? Best regards, Ivan Mandinski
$50 USD in 3 days
7.3
7.3

With over 12 years of experience in Full-Stack Development, we have built a strong foundation in the very technologies your project entails - React, FastAPI, and MongoDB. We are thorough when it comes to testing and have a keen eye for detail, making us excellent candidates to validate and enhance the functionality of your eCommerce web application. We're familiar with unit, integration, and UI/UX testing, ensuring that no aspect of your app is overlooked.
$30 USD in 7 days
7.2
7.2

A thorough pre-launch review of your React 19 + FastAPI + MongoDB stack is exactly the kind of work I enjoy — catching issues before your customers do. I'll write unit tests using Vitest with React Testing Library for frontend components and pytest for your FastAPI endpoints and business logic, then build integration tests that validate the complete purchase flow from UI through API to MongoDB writes using Playwright for browser-level coverage and httpx for API chain testing. On the UI/UX side, I'll manually test across devices and browsers, evaluating navigation flow, error handling, loading states, mobile responsiveness, and checkout friction — delivering a detailed report with prioritized findings and concrete improvement suggestions. I work with this stack daily and can start right away.
$30 USD in 1 day
6.6
6.6

With over a decade of experience in full-stack web development, e-commerce testing and UI/UX evaluation align incredibly well with my skill sets. I have a profound understanding of React 19, FastAPI and MongoDB -- the crux abstractions your e-commerce app is built upon-- making me readily capable to carry out comprehensive quality assurance. My keen eye for detail ensures that I not only perform unit, integration and UI/UX testings but also discern potential improvements that can make your app more polished for a flawlessly simple shopping experience. My previous work in web automation and data extraction demands the same high-level scrutiny that your project requires. For instance, in the past, I've scraped sports data from sites like FlashScore and Wyscout which required understanding multilayered dependencies akin to how your backend should interact with different components in your app. As an AI-specialist, I use automation to validate web forms, solve captchas, even extract complex data such as OCR-based bank statements or invoices. Leveraging these multi-faceted skills and my passion for delivering scalable solutions, I firmly believe that I am uniquely positioned to ensure your e-commerce platform is robustly tested and primed for success.
$30 USD in 1 day
6.3
6.3

Hello! I see you're looking for testing and review of your custom e-commerce web application built with React and Tailwind. It’s crucial to ensure that both the frontend and backend perform well, especially with e-commerce where user experience can directly impact sales. I’d focus on functional testing to verify that all features work as intended and usability testing to evaluate the customer journey. Given your tech stack, I’d consider using Jest for unit tests and Cypress for end-to-end testing to cover different aspects of your application effectively. I'd start by analyzing the existing codebase and setting up the testing framework before diving into specific test cases. Q1: Are there any specific features or user flows you want prioritized during testing? Q2: What types of devices or browsers do you want to ensure compatibility with? Q3: Do you have any existing test cases or documentation that would help guide the testing process? Let’s make sure your app is ready for users.
$200 USD in 2 days
6.0
6.0

Hello, I am Adham, a seasoned Website Designer with over 15 years of experience. I have a deep understanding of various technologies and frameworks, including React, FastAPI, and MongoDB, which are essential for your e-commerce app testing and review project. I have carefully reviewed your requirements and am confident in delivering a professional and thorough testing process to ensure the functionality and user experience of your custom e-commerce web application meet the highest standards. With a track record of successfully completing projects for over 1500 companies worldwide, I offer a comprehensive range of services in graphic design, web design, and interior design. You can view my portfolio here: https://www.freelancer.com/u/engmoriadham Let's discuss further details in the chat. Thanks, Adham
$100 USD in 3 days
5.7
5.7

A finished React 19/Tailwind app with FastAPI and MongoDB needs the awkward pre-launch checks: cart state, auth/session edges, catalog data, order creation, and what happens when the UI and API disagree. I'd run this as an engineering-led QA pass across the real buyer/admin flows, then back each finding with steps to reproduce, expected vs actual result, severity, affected area, and a practical fix recommendation. I'd cover frontend behavior, API responses, MongoDB persistence, validation gaps, broken states, responsive UI, and UX friction around checkout/catalog/account flows. For $250 over 3 days, I'd deliver one QA findings report covering reproducible bugs, integration issues, UI/UX notes, and launch-risk recommendations. This is an indicative estimate from the brief; I'll give you a firm quote once the exact scope and app access are locked. Quick check before I start: do you already have test accounts and seed product/order data ready, or should I include setting up basic test scenarios as part of the review?
$250 USD in 3 days
5.6
5.6

Hi There! I specialize in web application testing and QA for modern full-stack platforms. With 9+ years of experience, I can thoroughly validate your React, FastAPI, and MongoDB application to ensure it's stable, secure, and launch-ready. Here’s how I can help: 1. Perform unit, integration, and end-to-end testing across the frontend, backend, and database. 2. Review UI/UX for usability, responsiveness, accessibility, and user flow improvements. 3. Identify bugs, performance bottlenecks, and integration issues with clear reproduction steps. 4. Deliver a detailed QA report with prioritized findings and actionable recommendations. Do you already have automated test coverage in place, or should I evaluate both existing tests and manual testing from scratch?
$140 USD in 7 days
5.2
5.2

Greetings, I see you need someone to thoroughly test and review your custom e-commerce web application built with React, FastAPI, and MongoDB. My approach would be to conduct unit testing to ensure each component functions as expected, followed by integration testing to check how well the frontend, backend, and database communicate with each other. Additionally, I’d perform UI/UX testing to enhance the user experience and interface, providing actionable insights for improvements. With my solid background in React, FastAPI, and MongoDB, along with extensive experience in all areas of testing, I can deliver detailed feedback that will help ensure a smooth launch for your app. Looking forward to helping you with your project. Best regards, Muhammad Arshman
$200 USD in 4 days
4.9
4.9

Hi there, I see you're looking for someone to thoroughly test and review your custom e-commerce web application built with React, FastAPI, and MongoDB. It sounds like you want to ensure everything works perfectly before launch, which is essential for a smooth user experience. With my 4+ years of experience in testing and development, I can help with unit testing to confirm that each component functions correctly, integration testing to check the interactions across the stack, and UI/UX testing to provide insights on how to enhance user engagement. I’m detail-oriented and committed to delivering a comprehensive feedback report that highlights any areas for improvement. Could you share more about any specific user scenarios or features you want to focus on during the testing phase? Best regards, Arslan Shahid
$30 USD in 3 days
4.9
4.9

Hey, I'm really pumped about this opportunity! I recently led a project with similar challenges and nailed it. Drawing from my experience in JavaScript, Website Design, Testing / QA, NoSQL Couch & Mongo, AngularJS, I’m ready to dive into your project. Please come over chat and discuss your requirement in a detailed way. Cheers, Vishal Maharaj
$250 USD in 5 days
5.7
5.7

Hi there I can thoroughly test your React + Tailwind frontend, FastAPI backend, and MongoDB stack and give you a clear, actionable report before launch. I’ll add focused unit tests (components, hooks, API endpoints), run end‑to‑end integration checks across frontend–API–DB, and do hands-on UX testing of the full e-commerce flow (browse → cart → checkout). You can see similar-quality work in apps like TradeHat and Forrio, where we shipped React-based, API-driven products only after structured testing passes. To keep things efficient for you: do you already have any testing framework in place (Jest/React Testing Library, Pytest) or should I set up the baseline from scratch?
$140 USD in 7 days
4.8
4.8

As an accomplished full-stack developer with over a decade's experience, I'm well-versed with every aspect of your e-commerce app stack including React, FastAPI, and MongoDB. But it's not just knowing the technologies that matter, it's in leveraging this knowledge to deliver on an all-inclusive requirement such as yours that sets me apart. My past work records in end-to-end project handling and my deep understanding of client requirements ensure minimal back-and-forth and projects delivered on time without having to make any quality compromises. Testing is a crucial phase before launching an application - something that should never be taken lightly. Here, my attention to detail takes center stage! I have extensive experience conducting unit tests, integration tests and UI/UX tests designed for easy comprehension, ensuring seamless interactions between frontend, backend, and databases. Moreover, I don't limit my expertise to just bug-reporting—I take great care to identify potential areas of enhancement and contribute comprehensive feedback.
$30 USD in 7 days
4.5
4.5

Hi, I can perform a complete pre-launch review of your React 19, FastAPI, and MongoDB application, covering unit testing, integration testing, UI/UX validation, and overall performance. I'll thoroughly test the user flows, API interactions, database operations, responsiveness, and edge cases, then provide a detailed report with bugs, recommendations, and prioritized fixes to ensure a smooth production launch. A few questions: Do you already have a staging environment and existing test cases, or should I create them from scratch? Would you like automated testing (Jest, Playwright, PyTest, etc.) included, or is the focus on manual QA with a comprehensive feedback report? Also, are there any critical workflows you'd like me to prioritize during testing? I can deliver a structured QA report with reproducible test cases, UI/UX suggestions, performance observations, and validation of frontend-backend integration to help you launch with confidence. Regards, Solves Inn
$100 USD in 3 days
4.2
4.2

⚠️ If you're not happy, you don’t pay. ⚠️ Hi there, Thank you for sharing your detailed e-commerce web application project brief. I can review and test your custom e-commerce web application built with React 19, Tailwind, FastAPI, and MongoDB for a flawless launch. I will deliver: • Thorough unit testing for individual components • Comprehensive integration testing for frontend, backend, and database interactions • Detailed UI/UX testing for enhanced user experience You will also receive: • Extensive feedback report for improvements I am confident I can ensure your application's quality and performance. Looking forward to discussing further details. Best regards, Chirag.
$200 USD in 7 days
4.3
4.3

Hi there! I'm excited to offer my expertise in testing and reviewing your custom e-commerce app. With my experience in React, FastAPI, and MongoDB, I can ensure seamless unit and integration testing. I'll meticulously assess UI/UX to enhance user experience. In past projects, I've successfully executed similar tasks, providing detailed feedback reports. Let's discuss how I can help elevate your app's performance. Looking forward to connecting further!
$30 USD in 7 days
4.5
4.5

Hi, I am a full stack AI developer with 8 years of rich experience in software development, with a background in full stack web application testing and quality assurance. I am familiar with React, Tailwind, FastAPI, MongoDB, JavaScript, Testing and QA, UI and UX testing, integration testing, and NoSQL databases. I can test your completed ecommerce application across the frontend, backend, and database layers to verify components, API flows, user actions, and data handling before launch. I will also review the UI and UX, document bugs clearly, and provide a practical feedback report with fixes and improvement suggestions. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$250 USD in 7 days
4.1
4.1

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