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I am looking for an experienced React Native developer to complete several minor fixes and functionality checks for an existing e-commerce mobile application. The app is already fully developed, and I have complete access to the source code, backend, and documentation from the previous developer. This is not a full rebuild or large-scale development project. The primary goal is to address a few existing issues, improve overall stability, and ensure all core shopping and subscription features are functioning properly. Scope of Work The required updates include: Adjusting button designs and improving visual consistency. Fixing minor bugs and polishing existing functionality. Ensuring product browsing, cart, checkout, and payment flows work correctly. Verifying push notifications and customer communication features are functioning as expected. Testing and resolving issues affecting app performance and user experience. Ensuring the subscription or membership system is properly implemented and operating as intended. Applying FLAG_SECURE only to sensitive account/profile screens to prevent screenshots and screen recording, while keeping product catalog and shopping screens unaffected. Future Enhancements I may also implement additional customization features in future updates, such as: Customer profile personalization. Loyalty and rewards functionality. Membership perks and exclusive content. Enhanced user account customization. The app should be maintained with future scalability in mind, including long-term support for both Android and iOS platforms. Additional Feature Request Currently, customer addresses are stored only for account and shipping purposes. I would like to explore implementing location-based functionality that allows users to discover nearby stores, pickup locations, or local promotions using radius-based search (e.g., 5km, 10km, 50km). Requirements Strong experience with React Native mobile app development. Experience maintaining and debugging existing production applications. Familiarity with e-commerce platforms, payment gateways, subscriptions, and checkout flows. Ability to quickly understand an existing codebase and implement fixes efficiently. Professional communication and reliable delivery. Budget My budget is firm. I am not looking for major feature expansions, upselling, or architectural changes beyond the requested scope. I have a clear vision for the application and need an experienced developer to complete the necessary fixes and improvements. I am the original owner of the application and will provide detailed information regarding the bugs, requested changes, source code, and supporting documentation. If you are interested, please share your relevant experience, availability, and estimated timeline for completing the work. Experience with e-commerce, marketplace, subscription-based, or retail mobile applications is a strong plus. Attach 2-3 relevant portfolios.
Project ID: 40535370
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Hi, I have developed relevant React Native e-commerce and subscription-based mobile apps that closely align with your bug fixing, payment flow, and membership system requirements. [login to view URL] This production e-commerce app required deep cart, checkout, and payment gateway debugging across both Android and iOS, including resolving edge cases in order flow and push notification delivery that only surface in live environments. [login to view URL] This subscription platform handles membership tiers, payment gateway integration, and account-sensitive screen protection, directly matching your FLAG_SECURE implementation and subscription system verification scope. [login to view URL] This cross-platform React Native app required inheriting an existing codebase, stabilizing push notifications, and ensuring consistent UX across Android and iOS without architectural changes, mirroring your exact maintenance brief. My approach would be: 1. I will audit the existing codebase on day one using a structured bug triage to map all broken flows against your documented issues, applying FLAG_SECURE selectively to account and profile screens while leaving catalog and cart screens fully screenshottable. 2. I will implement the radius-based store locator using the device GPS with a configurable distance filter so users can discover nearby pickup points at 5km, 10km, or 50km without any backend architectural changes. Best, Matthewe Moore
$50 USD in 2 days
1.8
1.8
208 freelancers are bidding on average $148 USD for this job

Hi I can help complete the remaining fixes and stability checks for your existing React Native e-commerce app without turning this into a rebuild. The main technical issue is making sure UI polish, checkout, subscriptions, push notifications, and security behavior are corrected without breaking the existing production flow. My approach is to first audit the current React Native codebase, backend integration, payment/subscription logic, navigation, and platform-specific Android/iOS behavior before applying focused fixes. I can adjust button designs, resolve minor bugs, verify product browsing, cart, checkout, payment, push notifications, and customer communication features. I can also review the membership/subscription system, receipt validation flow, app state handling, and API responses to confirm everything works reliably. For FLAG_SECURE, I will apply it only to sensitive account/profile screens while keeping catalog and shopping screens screenshot-friendly. For the future location feature, I can assess address data, geolocation permissions, radius search, store pickup logic, and local promotion filtering. I have experience maintaining React Native apps, e-commerce flows, payment gateways, subscriptions, push notifications, performance debugging, and scalable mobile architecture. Thanks, Hercules
$140 USD in 7 days
7.1
7.1

Hi, With my extensive 6 years of experience in mobile application development, I am confident in my ability to deliver top-notch solutions for your e-commerce app. Not only do I have the technical skills you're seeking, but my track record also speaks for itself with a solid history of maintaining and debugging existing production applications. I'm well-versed in e-commerce functionalities and understand the importance of smooth product browsing, cart management, secure payment processes as well as efficient backend APIs to ensure those requirements are met. What sets me apart is my problem-solving approach in tandem with my ability to efficiently familiarize myself with existing codebases. I aim to deliver effective yet budget-friendly solutions that adhere to the desired scope. Moreover, my experience with marketplace apps and subscriptions augments your need for maintaining scalability while incorporating future enhancements seamlessly.
$200 USD in 7 days
7.2
7.2

Hello, I came across your project, and it looks like something our team at ITFlex Solutions would be a great fit for. Our team can surely manage to do the work you need with over 40+ developers, To help you further on your project we can setup a meeting as well to discuss everything, We have around 18 years of expereince with managing projects and developing good things to our clients. Please visit our Freelancer profile https://www.freelancer.com/u/shivmirthyusl to get more details about us and some samples. Please leave me a message, so we can discuss and confirm the requirements. Thanks, SNR
$120 USD in 2 days
6.9
6.9

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 Mobile App Development, Android, Agile Development, iOS Development, Payment Gateway Integration, React Native, Technical Documentation, API Integration, Visual Design, REST API Please come over chat and discuss your requirement in a detailed way. Thank You
$70 USD in 3 days
6.3
6.3

Hi I will be able to help you. May I know on which technology app and backend is done? 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 and php CodeIgniter mvc and Laravel. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$450 USD in 14 days
6.6
6.6

Hi there, I see you're looking for a React Native developer to tackle some bug fixes for your e-commerce mobile app. It's crucial to address these issues quickly to maintain a smooth user experience and ensure payment gateway integrations function correctly. I would focus on debugging the components affecting API interactions and the visual design elements that might be causing user confusion. I'd start by reviewing your existing codebase to identify the specific bugs, then prioritize fixes based on user impact. Q1: Could you specify the main bug areas you're experiencing issues with? Q2: Are there particular devices or operating systems where these bugs are more prevalent? Q3: Do you have any existing documentation on the app that I can reference while working on the fixes? I look forward to your response.
$200 USD in 2 days
6.6
6.6

With a decade of experience in full-stack development and a particular focus on React Native, I am confident that I'm the perfect fit for your e-commerce mobile app project. Not only am I experienced in maintaining and debugging existing production applications, but I've also worked extensively with e-commerce platforms, payment gateways, and checkout flows - configuring them seamlessly to provide smooth user experiences. One aspect of my skill set that aligns perfectly with your requirements is my ability to quickly understand and efficiently implement fixes on top of an existing codebase. This means minimal disruptions and expedited solutions to your app's issues. In addition to bug-fixes, my vision for long-term project success includes ensuring that your app is scalable - giving due importance to your plans of future enhancements. Lastly, several projects in my portfolio are similar to what you're looking for - fully developed apps that required fixing minor bugs, enhancing stability and optimizing performance. All these credentials plus my commitment to transparent communication, clean code and timelines suggest that choosing me would be both technically sound and cost-effective. Don't hesitate to reach out, let's begin polishing off the rough edges of your app!
$140 USD in 7 days
6.6
6.6

Hello There!!! ★★★★ (React Native eCommerce app bug fixing, checkout validation, subscription verification, and long-term scalability support) ★★★★ I carefully reviewed your project and understand that you need an experienced React Native developer to resolve existing bugs, improve UI consistency, verify payment and subscription workflows, optimize app stability, and ensure the application performs reliably across both Android and iOS. ⚜ React Native Bug Fixes & Maintenance ⚜ UI Refinements & Visual Consistency ⚜ Cart, Checkout & Payment Flow Testing ⚜ Subscription & Membership Validation ⚜ Push Notification Troubleshooting ⚜ Performance Optimization & QA Testing ⚜ API Integration & Security Enhancements I have worked on eCommerce, marketplace, and subscription-based mobile applications, helping businesses stabilize production apps without unnecessary rebuilds. I enjoy quickly understanding existing codebases and delivering clean, efficient fixes with proper testing. My approach is to first audit the application, reproduce reported issues, verify checkout and payment flows, review notification systems, implement FLAG_SECURE only on sensitive screens, and thoroughly test the app before deployment. I’m available to start immediately and would be happy to review the bug list, source code, and documentation. Looking forward to discussing the project further. Warm Regards, Farhin B.
$110 USD in 10 days
6.6
6.6

Hi, I am a seasoned React Native developer with a strong background in maintaining and enhancing existing e-commerce mobile applications. I can swiftly address the required bug fixes, UI enhancements, and functionality checks for your app. With a keen eye for detail, I will ensure seamless product browsing, checkout processes, and push notifications. I am well-versed in implementing subscription systems and can efficiently enhance user experiences through personalized features like loyalty programs and location-based services. My expertise in e-commerce platforms and payment gateways will guarantee the stability and scalability of your app. I look forward to collaborating on this project and delivering exceptional results. Thank you for considering my proposal. Best regards,
$100 USD in 2 days
5.9
5.9

Hi, We’ve developed several e-commerce apps with subscription models and integrated payment gateways like Stripe and PayPal. We also have extensive experience with server-side technologies like Node.js and PHP, which can be valuable for optimizing backend processes and improving overall app performance. In addition to fixing bugs, we can proactively identify and resolve issues that may not be immediately apparent but could impact your app’s stability and user experience. Let’s schedule a 10-minute introductory call to discuss your project in more detail and ensure I fully understand your requirements. I usually respond within 10 minutes. I’m eager to learn more about your exciting project. Best regards, Adil
$132.64 USD in 7 days
5.9
5.9

It sounds like the hard part is already done—the app is live, the codebase exists, and what you need now is someone who can step into an existing React Native project, understand it quickly, and clean up the rough edges without turning it into a bigger project than necessary. My first step would be to review the current flows end-to-end: product browsing, cart, checkout, payments, subscriptions, notifications, and account management. From there I'd reproduce each reported issue, identify whether it's UI, API, or state-management related, and work through fixes systematically so nothing breaks elsewhere. For FLAG_SECURE, I'd apply it only to the sensitive account/profile areas and verify shopping-related screens remain unaffected. I’d also run performance and UX checks around navigation, loading states, and error handling since small issues there often create the biggest customer frustration. I’ve worked on production applications where maintaining existing functionality was more important than adding new features, so I’m comfortable working within an established codebase and documentation. For the future location-based feature, do you already have store/location data available through the backend, or would that need to be introduced as part of a later phase? I can start reviewing the codebase as soon as access is provided.
$140 USD in 7 days
5.6
5.6

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have successfully fixed and enhanced several React Native e-commerce apps, ensuring smooth shopping and subscription features. From my experience, understanding the existing codebase quickly is key to delivering fast and reliable fixes. Approach: ⭕Analyze reported bugs and inconsistencies ⭕Fix button designs and improve UI visual consistency ⭕Test product, cart, checkout, payment flows thoroughly ⭕Verify push notifications and customer communication ⭕Apply FLAG_SECURE selectively on sensitive screens ⭕Ensure subscription system operates correctly ❓Could you please provide the most critical bugs and issues to prioritize? I am confident I can efficiently complete these fixes and improve your app stability. Looking forward to working together. Best regards, Nam
$200 USD in 3 days
5.4
5.4

As a seasoned React Native developer with over a decade of full-stack development experience, I am confident in my ability to resolve any bugs, fix issues with functionality, and enhance the overall performance of your e-commerce mobile app. My familiarity with e-commerce platforms, payment gateways, subscriptions, and checkout flows will be an invaluable asset for your project goals. Apart from my tech expertise, my team and I prioritize efficient communication. Your clear vision for the application aligns perfectly with our goal of providing reliable delivery that stays within the scope. Additionally, based on your future enhancements plan, rest assured that we will maintain your app with scalability in mind. We'll ensure long-term support for both Android and iOS platforms. I understand it is crucial for you to have professionals who can quickly dive into an existing codebase and troubleshoot every problem efficiently. It is no challenge for us to understand your business logic and documentations. With every project, we bring not only technical skills but also a strategic mindset to amplifying your digital product. Team up with me to leverage the power of experience!
$50 USD in 7 days
5.3
5.3

Hi, I’m interested in helping with your React Native application. I understand this is not a rebuild but a focused maintenance and stabilization project for an existing production e-commerce app. For your project I can: • Fix UI inconsistencies and button styling • Resolve bugs and improve app stability • Verify product browsing, cart, checkout, and payment flows • Test and troubleshoot push notifications • Review and validate subscription/membership functionality • Implement FLAG_SECURE only on sensitive account/profile screens • Perform cross-platform testing on Android and iOS • Prepare the codebase for future enhancements and scalability I also have experience with location-based features and can advise on implementing radius-based store discovery, pickup locations, and local promotions in a future phase. My approach starts with a codebase audit, issue verification, and testing of all critical user journeys before implementing fixes and delivering a tested build. Estimated timeline: 3–7 days depending on the final bug list and scope. Quick question: are you using Stripe, RevenueCat, Google Play Billing, App Store Subscriptions, or another subscription/payment solution? Regards, Khurshid Ahmed
$85 USD in 7 days
5.3
5.3

Hello! Completing minor fixes and functionality checks on an existing React Native e-commerce app — with source, backend and docs in hand — is a clean, well-defined job we can turn around quickly. We'll audit the reported issues, fix the shopping and subscription flows, improve overall stability, and verify everything end-to-end on Android and iOS before handover. We maintain and ship production React Native / Flutter commerce apps regularly (our live products include Govear and iCargos), so we're comfortable jumping into someone else's codebase and stabilising it without a rebuild. Share the issue list and I'll confirm timing fast. — Muhammad Idrees / Global IT Vision Pvt. Ltd
$220 USD in 7 days
6.0
6.0

Good Day! I have carefully analyzed your project and understand you need a React Native developer to refine and stabilize your existing e-commerce mobile app by fixing UI inconsistencies, debugging checkout and subscription flows, ensuring push notifications work correctly, and improving overall performance without altering the core architecture. I can efficiently work within your existing codebase to resolve issues, implement FLAG_SECURE appropriately, and ensure both Android and iOS versions run smoothly while keeping the app scalable for future enhancements like loyalty features and location-based discovery. I am eager to contribute my expertise and deliver top-notch results for your project. Let's discuss the project further in chat or let's have a quick call! Best regards, M Adeel.
$100 USD in 3 days
5.0
5.0

✋ Hi There!!! ✋ THE GOAL OF THE PROJECT:- FIX BUGS AND IMPROVE STABILITY OF AN EXISTING REACT NATIVE ECOMMERCE MOBILE APP WITH PAYMENT AND SUBSCRIPTION FLOWS I have carefully reviewed your requirement for a React Native developer to debug, optimize, and validate your existing production e-commerce application without changing the core architecture. I am the best fit for this project because I have strong experience in maintaining live React Native apps, fixing critical production issues, and improving performance in e-commerce systems. Key points matching your requirements: 1 Bug fixing and UI consistency improvements across app screens 2 Validation of checkout, payment gateway, cart, and subscription workflows 3 Push notification, FLAG SECURE implementation, and performance testing fixes I will provide UI adjustments, bug fixing, database/API validation, testing, and full source code updates after completion. I have 9+ years experience in full stack and mobile app development and have worked on multiple React Native e-commerce and subscription based applications. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$144 USD in 3 days
5.0
5.0

Hi there, Thank you for outlining such a clear and comprehensive overview of your project needs. We at DemiVision LLC are a dedicated team of experienced mobile developers specializing in React Native, with a strong track record in building, refining, and supporting high-quality e-commerce and subscription-based applications for both Android and iOS platforms. We’ve carefully reviewed your requirements and fully understand the importance of addressing the current bugs, enhancing UI consistency, and ensuring seamless functionality across your shopping, checkout, and subscription flows. Our expertise covers not only React Native development but also payment gateway integration, RESTful API work, and robust technical documentation. We have successfully delivered similar projects, ensuring secure handling of sensitive screens with features like FLAG_SECURE, while maintaining an optimal user experience throughout. For the additional feature regarding location-based discovery, we have implemented radius-based store and promotion searches in past projects and can integrate this functionality in a scalable, efficient manner without disrupting your current structure. When you share the detailed bug list and access to your codebase, our team will conduct a comprehensive review, prioritize the fixes, and maintain clear communication throughout the process. Our approach emphasizes stability, future scalability, and a user-centric experience, ensuring your app remains reliable and ready for long-term growth. Please find attached a selection of our relevant portfolio projects demonstrating our experience with e-commerce, membership, and marketplace mobile solutions. We look forward to collaborating with you on this project and supporting the ongoing success of your application.
$140 USD in 5 days
4.6
4.6

Hi There, I understand that you are looking for an experienced React Native developer to address minor fixes and ensure the stability of your existing e-commerce mobile application. I specialize in improving app functionality, debugging existing applications, and implementing design adjustments – all key elements of your project. With over 6 years of experience in Mobile App Development, I am proficient in React Native, Android, iOS, and Payment Gateway Integration. My expertise in Agile Development and API Integration ensures efficient implementation of your requirements while maintaining high-quality standards. Here are some relevant examples of my work: - [E-commerce App Development](https://www.freelancer.com/u/haseebsidd07) - [Subscription-based Application](https://www.freelancer.com/u/haseebsidd07) - [Mobile App Performance Optimization](https://www.freelancer.com/u/haseebsidd07) I look forward to the opportunity to discuss your project in more detail. Thank you, Regards, Abdul Haseeb Siddiqui
$30 USD in 7 days
4.9
4.9

I can jump into your existing React Native codebase and handle the targeted fixes you need without disrupting the architecture. I’m used to maintaining production e‑commerce apps, so I can quickly identify UI inconsistencies, patch minor bugs, and ensure the full shopping flow—browsing, cart, checkout, payments and subscriptions—works smoothly on both iOS and Android. I’ll verify push notifications, customer messaging, and performance issues, then apply FLAG_SECURE only to sensitive account/profile screens while keeping catalog and shopping screens unrestricted. I’ll also confirm that your subscription/membership logic is implemented correctly and stable. For your future roadmap, I can extend the app with loyalty features, profile personalization or exclusive membership perks. And if you want to explore location‑based store discovery, I can add a radius search using geolocation + backend filtering. I work efficiently with existing codebases, provide clear communication, and can give you a realistic timeline once I review your bug list and repo. I’ve built and maintained multiple retail, subscription and marketplace apps, and can share 2–3 relevant examples. Best, Juan F.
$200 USD in 7 days
4.8
4.8

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