UPI Payment Gateway Integration

@SBITServices

Hi, I can integrate the complete UPI payment flow in your Expo React Native app, including secure order creation, UPI Intent/Collect, deep linking, webhook verification, sandbox/live testing, and production setup. I have 10+ years of experience building custom web and mobile applications. I can work with Razorpay, PhonePe, Cashfree, or PayU and deliver clean, well-documented code. Ready to start immediately. Thank you. Regards, Sai

@softwarelinkerrs

With profound expertise in API Development, Payment Gateway Integration, PHP, and React Native, I would love to take on the task of integrating a seamless UPI payment gateway into your mobile application. My extensive experience in setting up payment flows, deep-linking with native UPI apps (Google Pay, PhonePe, Paytm, BHIM), handling webhooks, and testing in both sandbox and production environments makes me an ideal fit for this project. Having a comprehensive understanding of the entire process involved - from environment setup to backend & frontend integration - I assure you the successful accomplishment of each step. To create a secure backend endpoint for triggering "Create Order / Payment Intent" API, generate order tokens & ensure transmission of transaction payloads to the front-end safely will be handled with dexterity. My proficiency extends to creating a user- friendly checkout UI enabling selection of UPI as payment method + deep-linking through native applications (Google Pay, PhonePe etc.) or UPI Collect (VPA address).

@abhishek060

Hi, I've integrated secure payment gateways in React Native applications and understand the challenges of implementing UPI flows with Expo. I can set up the complete payment lifecycle—from secure order creation on the backend, UPI Intent/Collect integration, deep linking, webhook verification, and production-ready testing using **Expo (EAS Build)** and **Node.js**. I'll ensure the integration follows payment security best practices with server-side verification, signature validation, proper handling of success/failure/cancel scenarios, and clear documentation for managing sandbox and live environments. I can start by reviewing your existing Expo project and recommend the most suitable gateway (Razorpay, PhonePe, or Cashfree) based on your requirements. Best, Abhishek

@Rajoriadares

Hello Client, Greeting of the day!!!! I read your job description. I can do this job with quality product. I am always available for your support. Thanks

@rudracompuTech

Hello, I reviewed your project requirements for UPI Payment Gateway Intigration and I can easily build professionally, r with all the features you need. I have 14+ years experience developing modern websites and app focused on performance, user experience, and lead generation. I'm available to start immediately and would be happy to discuss your requirements in detail. ~Regards Pradeep

@Mayurisharma7619

Dear Client, I can develop the complete UPI payment flow for your Expo React Native application, including checkout UI, backend order creation, deep linking, webhook handling, and live payment verification. I have 6+ years of experience building React Native and backend solutions. I understand secure payment integration and will ensure the payment flow works smoothly on both Android and iOS. I can share my previous work links in the chat box. Looking forward to your response on chat box. Thanks.

@srdank001

Hi there, I have hands on experience integrating secure payment flows in Expo React Native apps using Node.js backends, deep linking, webhooks, and server-side verification. I can implement Razorpay, PhonePe, or Cashfree with a smooth UPI checkout for Google Pay, Paytm, BHIM, and other supported apps. The solution will include secure order creation, EAS configuration, callback handling, signature verification, payment status updates, sandbox testing, failure-state handling, and production deployment. You’ll also receive clean backend code and clear documentation for updating API keys and managing future transactions. I’d be glad to review your current Expo setup and recommend the most suitable gateway. Thanks, Srdan

@urrj2004

Hi, I have experience integrating UPI payment gateways into React Native (Expo) applications and can implement a secure, end-to-end payment flow using Razorpay, PhonePe, Cashfree, or PayU. I'll configure the Expo/EAS setup, implement backend order creation, integrate UPI Intent and deep linking, set up secure webhook verification, and thoroughly test sandbox and production payment flows on both Android and iOS. Questions: 1) Which payment gateway have you selected, or would you like me to recommend the best option for your use case? 2) Do you already have a Node.js backend, or should I build the required payment APIs and webhook endpoints as part of this project? I'm available to start immediately and can deliver clean, well-documented code with deployment guidance. Regards, RAJAT

@priyanshuk879

Hi, I can help integrate a complete UPI payment flow into your Expo React Native app. I've worked with payment gateway integrations and understand the importance of secure order creation, webhook verification, and smooth deep-linking back to the app. I'll set up the backend for order creation, integrate the gateway into your Expo app using EAS where needed, and make sure Google Pay, PhonePe, Paytm, and other UPI apps work properly. I'll also test success, failure, timeout, and cancellation scenarios before switching to production. You'll receive clean code, clear documentation, and a setup that's easy to maintain and update with live API keys later. I'd be happy to discuss the gateway you prefer and the best implementation approach.

@sanddep5

As an esteemed React Native developer, I wholeheartedly believe that my comprehensive API Integration, JavaScript, and Node.js skills will bring immense value to your UPI Payment Gateway project. Through the years, I've worked on numerous similar projects like with Razorpay, PhonePe, Cashfree, or PayU, precisely what you require for this project. My hands-on experience in setting up payment flows, deep-linking native UPI apps (Google Pay, PhonePe, Paytm, BHIM), handling webhooks and my expertise in both sandbox and production environment testing align perfectly with the scope of work you've outlined. To ensure a seamless process from start to finish, I prioritize establishing a secure backend endpoint for order creation and generating tokens for frontend transactions while maintaining robust VPA address support. Additionally, I always set up server-side Webhook listeners to efficiently handle payment status updates like success or failure and perform thorough testing using test UPI handles/credentials. My relentless commitment to delivering clean code has consistently secured my client's projects against tampering while guaranteeing efficient verification. I appreciate your consideration and look forward to working together on this innovative project. Kindly let me know how we can proceed further discussions.

@dholadipak09

✅Plz review my proposal and reach out to me.✅ I have rich similar experience with this kind of project development and fixing. I can integrate a secure, reliable UPI payment flow into your Expo React Native app using Razorpay, PhonePe, Cashfree, or PayU. The best solution is to use an Expo Development Build with EAS, a secure Node.js backend, deep linking, and server-side payment verification. ✅ Configure Expo, app schemes, environment variables, sandbox/live credentials, and checkout UI for Android and iOS. ✅ Build backend APIs for order creation, payment intent generation, webhook handling, signature verification, and database status updates. ✅ Support UPI Intent and Collect flows, Google Pay, PhonePe, Paytm, BHIM redirects, success/failed/pending states, sandbox testing, production migration, and documentation. I will ensure that payment status is confirmed only through the backend and verified webhook response, preventing frontend manipulation or false success states. My important questions are: 1. Which gateway have you selected: Razorpay, PhonePe, Cashfree, or PayU? 2. Do you already have the backend and merchant sandbox credentials available? I’m ready to review your existing Expo project and begin the integration immediately. Best regards, Dipak

@artifactgeeks

Hi As an accomplished Full Stack & DevOps Engineer, I possess all the necessary skills and experience you need for a successful UPI Payment Gateway Integration. My extensive expertise in React Native, particularly with Expo (EAS Build), complements your project requirements, ensuring the seamless integration of a UPI payment gateway into your mobile application. Moreover, having facilitated payment flows and deep-linking with native UPI apps like Google Pay, PhonePe, Paytm, and BHIM in previous projects strengthens my proficiency further. Additionally, my skills with backend API development using Node.js/Express, creating secure endpoints, dealing with webhooks and order creation logic are well-aligned with the technical demands of your project. I am confident in delivering a fully functional UPI payment flow inside your Expo app – on-time, on-budget and assuring quality throughout. Thanks

@nataliyabest1

Hi there, You've laid out a clear step-by-step for UPI payment integration in your Expo React Native app, covering EAS config, secure backend endpoints for order creation, frontend UPI flow with intent and collect, deep linking, webhook verification, and rigorous sandbox/production testing. For the backend, I'll set up secure API endpoints in Node.js as described, pass payment payloads safely, and manage environment variables for credentials. On the frontend, the checkout flow will support both UPI Intent and Collect, handling deep links back into the Expo app after payment. Webhook listeners will include signature verification to guard against payload tampering, and I will document all flows for easy handoff. I'll make sure no sensitive API keys are ever hard-coded into the app, and all payment status states (success, failure, timeout, cancellation) are visibly handled in the UI. One thing to watch for is handling multiple UPI apps installed - I'll implement logic to gracefully prompt the user to choose, avoiding failed payment attempts due to default app issues. I'm motivated to build a strong reputation here and will stick to your budget. I'm ready to start as soon as I have your current API and app repo access. Which UPI provider do you prefer as primary: Razorpay, PhonePe, or Cashfree? Best regards, Nataliya H.

@dishirajput7

Having spent over 5 years in developing highly performant applications, I bring multifaceted skills to the table - from backend API development to mobile app development (Android and iOS) using React Native, and much more. I have onboarded more than 50 applications and handle client projects emphasizing scalability, performance and security. This aligns well with your overarching requirement for a skilled developer who understands the intricacies of payment gateways and the deep-linking necessary for seamless integration. Should you opt for my services, be assured of quality work delivered on time. My expertise in handling every aspect of this project from setting up environments to building UI and integrating UPI flow within the Expo app comes from hands-on experience garnered in numerous projects similar to yours. Ensuring smooth payment transactions while keenly monitoring failures, timeouts, or cancellations is something I'm adept at, and I amplify it with continuous server-side verifications.

@rahulk0744

Having solid experience as a full-stack developer, specifically working with React Native/Expo and Node.js, I am confident in my abilities to seamlessly integrate UPI payment gateways like Razorpay, PhonePe, Cashfree, or PayU into your mobile application. I have developed numerous REST APIs, authentication systems, and have worked on deep-linking configurations in the past - skills that are essential for successfully completing this project. Moreover, I have prior knowledge of setting up backend endpoints to trigger Create Order/Payment Intent API and ensuring secure communication between the front end of app and server using transaction payloads. My ability to handle webhooks efficiently will ensure we capture every aspect of payment- including dealing with any failures or timeouts. In a nutshell, my vast experience in REST API & SDK Integration development, payment gateways implementation like Razorpay/PhonePe/PayU/Cashfree along with deep understanding of web-hooks makes me the ideal candidate for your project. I assure you of delivering a fully-functional UPI payment flow in your Expo app while adhering responsibly to all stages from testing to go-live.

@deepaktiwari2810

Hello, Thank you for considering my proposal. I am committed to delivering high-quality work with accuracy, professionalism, and on-time completion. Before starting, I carefully understand every project requirement to ensure the final result matches your expectations. I communicate clearly, provide regular progress updates, and remain available for revisions until you are completely satisfied. My focus is not just completing a task—it’s delivering a solution that adds value to your project. I believe in building long-term relationships through reliability, attention to detail, and consistent quality. I would appreciate the opportunity to prove my skills and exceed your expectations. Let’s discuss your project and get started. Thank you.

@blazeh2

Hello, I understand you need an Expo React Native developer to integrate a complete UPI payment flow with secure backend processing, deep linking, webhook verification, and production-ready deployment. I can implement the payment workflow using Razorpay, PhonePe, Cashfree, or another suitable gateway, including Expo development build configuration, EAS setup, secure environment variables, and native dependency handling when required. I will develop the backend payment flow for order creation, token generation, webhook handling, signature verification, and secure transaction status updates. On the mobile side, I can build the UPI checkout interface, integrate UPI Intent/Collect flows, handle redirects from Google Pay, PhonePe, Paytm, and BHIM, and ensure proper success, failure, and cancellation handling. I will test the complete flow in sandbox and production environments and provide clear documentation for API keys, deployment, and future maintenance. I have experience with React Native, Expo, Node.js APIs, payment gateway integrations, deep linking, and secure mobile application development. My goal is to deliver a reliable UPI payment system that works smoothly across Android and iOS while keeping the architecture secure and maintainable. I would be happy to review your existing app structure and backend setup to begin the integration.

@tridiprong

Hi, I can help integrate a secure and reliable UPI payment flow into your Expo React Native application. I have experience building Node.js backend APIs, third-party integrations, webhooks, authentication, and production-ready systems. For this project, I can deliver: • Secure backend API for order creation • Integration with Razorpay, PhonePe, Cashfree, or your preferred gateway • UPI Intent and Collect flow support • Expo (EAS Build) compatible implementation with deep linking • Server-side webhook handling and signature verification • Payment status tracking (Success, Failed, Pending) • End-to-end testing in sandbox and production • Clean documentation for API keys, deployment, and future maintenance My focus is on building a secure implementation where payment verification happens server-side before updating application data, following payment gateway best practices. Before we begin, I'd like to clarify: 1. Which payment gateway have you finalized (Razorpay, PhonePe, Cashfree, or PayU)? 2. Do you already have a Node.js backend, or should I build the payment APIs as part of this project? 3. Is your Expo app already using EAS Build, or are you currently on Expo Go? I look forward to discussing your requirements and delivering a clean, production-ready integration. Thank you.

@cashk2

Hello, I understand you need an Expo React Native developer to integrate a complete UPI payment solution with secure order creation, native UPI app handling, webhook verification, and production deployment. I can implement the full payment flow including Expo EAS configuration, required native setup, secure environment variables, and integration with Razorpay, PhonePe, Cashfree, or another suitable gateway. I will develop the backend payment APIs for creating orders, generating secure payment requests, handling webhook callbacks, verifying signatures, and updating transaction status safely. On the mobile side, I will build the UPI checkout flow, support UPI Intent/Collect methods, configure deep linking, and handle success, failure, pending, and cancellation scenarios. I will perform complete sandbox testing, verify transactions across supported UPI apps, prepare production configuration, and provide clear documentation for API keys and future maintenance. I have experience with React Native, Expo, Node.js APIs, payment gateway integration, webhook systems, deep linking, and secure mobile application development. My goal is to deliver a reliable UPI payment integration that works smoothly on both Android and iOS with clean and maintainable code. I would be happy to review your existing app architecture and backend setup to start the implementation.