App Integrations: Payments, WhatsApp, Instagram

@FreeLancers360

As a full stack developer with extensive experience in API and payment gateway integrations, I am well-suited to handle your project from start to finish. I have worked with a variety of providers such as PayPal, Stripe, and Square, which means I can recommend the best PCI-compliant option based on your specific needs. My focus has always been on security, so rest assured that your users' transactions will be completely secure and all errors will be transparently reported in the UI. On the social media front, I am familiar with all the necessary aspects of using the Instagram Graph API for user authentication, profile data retrieval and content sharing seamlessly. This includes adhering to strict rate limits to ensure optimal performance. My expertise extends to implementing various messaging platforms, including WhatsApp API integration. I understand the need for a pre-filled chat feature in your app so that users can reach out for product information or support efficiently. I look forward to setting this up for you using the official WhatsApp API or any alternative method that may better suit your requirements. In summary, my skills in web application development, payment gateway integration, PHP and working with APIs make me more than capable of delivering exactly what you need- complete integration end-to-end which is smooth, secure and highly functional. Addtionally,mI can provide clear setup documentation and am available for any future support you migh

@erincguray

Greetings I am Erinc I am a Web Developer knowledgeable in PHP and Mobile App Development. I can confirm I am able to help with external services integration to your app under your budget. I am able to start now and on desk everyday. Looking forward to hear from you. Thanks for your consideration.

@ydvhitender

hey, I can seamlessly integrate your app with the chosen payment gateway (PCI-compliant of course), implementing secure tokenized transactions alongside robust webhook handling to process success/failure events and provide clear error reporting in the UI. The same precision integration extends to Instagram as well. I am well acquainted with working with Instagram's Graph API flow and can guarantee refreshable long-lived tokens as standard. Added to that, I have a clear understanding of rate-limiting and can handle it effectively within your given timeframes. Moreover, having previously integrated WhatsApp for chat functions, I'm familiar with its official API system or deep link process to provide users uninterrupted connectivity via your app. I assure you a perks-loaded service package: end-to-end integration of payment gateways, Instagram user authentication, sharing endpoints alongside pre-filled chats through WhatsApp API/deep links; all encapsulated in a comprehensive documentation for any potential future developer quickly get on board. Post project completion, I'll be happy to provide not only a brief hand-off call but also a recorded walkthrough. So, why wait? Let's discuss your project and get started!

@christech1117

I want your app talking to payments, Instagram, and WhatsApp without users ever leaving it. For payments I'd wire Stripe (test + live keys, tokenised card flow, no PCI burden on you) with a verified webhook endpoint that maps success/failure/refund events to clear in-app states — Square or PayPal work too if your market prefers them. Instagram runs on the Graph API: OAuth login, basic profile pull, share to selected screens, long-lived tokens auto-refreshed, and backoff on rate limits. WhatsApp opens via official deep link with a dynamically templated pre-fill from the tapped product or support context. You get all source, test-mode toggles, and setup docs so credentials swap in minutes. I've shipped Android apps through Play review and built anti-bot automation pipelines end to end. Are your existing screens native (Swift/Kotlin) or cross-platform like Flutter/React Native?

@mariamshaikh018

Hi, wiring up payments, Instagram login and a WhatsApp chat button into your existing app so nothing sends users elsewhere. Webhook handling for payment success and failure is the part I will get right first. Which gateway do you prefer, Stripe or PayPal? My team has integrated both before with refreshable tokens and clean error handling. Regards, Mariam

@kushwahavivek05

Hi, I can handle the payment, Instagram, and WhatsApp integrations end-to-end and connect them with your existing iOS/Android app without disturbing the current working features. I’ll implement secure payments with proper webhook and error handling, Instagram authentication/profile integration with rate-limit handling, and WhatsApp deep links with dynamic messages. I’ll also test success and failure cases, document the setup, and provide a short handover walkthrough. I have strong experience with PHP/Laravel, backend APIs, webhooks, third-party integrations, and application architecture. I focus not just on making integrations work, but on keeping them secure, reliable, and maintainable. I can complete this in approximately 5–7 working days after reviewing the codebase.

@omarkhe

My name is Omar and I am a seasoned software engineer with a strong background in MERN stack development and Flutter applications. I have successfully integrated numerous payment gateways, social media platforms, and messaging APIs into various applications throughout my career. Regarding the payment gateway, I am familiar and experienced with PayPal, Stripe, Square, and other PCI-compliant services. I will ensure secure tokenised transactions, robust webhook handling, and transparent UI error reporting to provide a seamless user experience for your app's financial transactions. For the Instagram feature, I'm knowledgeable about the Instagram Graph API and its limits. Rate limit handling is a priority for me to ensure you don't exceed any constraints while allowing users to sign in easily with their Instagram accounts. Lastly, I understand you want a convenient way for users to communicate with you through WhatsApp. My approach is to use the official WhatsApp API/deep link which helps launch pre-filled chats directly from your app. Nevertheless, if there's an even better method available, I'm open to exploring it as well. Overall, my software engineering perspective qualifies me to not only implement the integrations requested but also document the process comprehensively for any future modifications. Let's have a call where sophisticatedly merge my expertise with your app's codebase for a successful enhancement that users will cherish!

@joshuam669

Howdy ❤️ Dear Client, Having worked extensively with both iOS and Android, in addition to your required skill sets of API Integration and PHP, I believe that I am the ideal fit for your project. My experiences building business platforms and customer portals have reinforced my proficiency in creating seamless experiences through multiple integrations. For instance, I once designed a SaaS product that relied on Stripe, Paypal, and Google Services all working harmoniously for payments and user authentication - I believe this scope matches up well with what you need involving Instagram login, WhatsApp chats, and secure transactions. My vast understanding of different payment gateways, such as Stripe, PayPal, Square, will be instrumental in determining the best choice for your app. Beyond just payment gateways though, a conversation early-on about other potential APIs you think would add value is something I highly encourage. By leveraging reliable frameworks like Node.js and React which you are already utilizing in your project, nothing gets lost in translation while handling these intricate integrations. Finally, my commitment to clear documentation ensures a seamless handover process. I believe that any software is only as good as its initial complexity wants to add anything new. My deep dive into existing systems gives me confidence to not only fix what currently exists but to thoroughly understand how to incorporate new features without compromising vital functionalities

@mikhailivanovai

Wiring external services into a working app is mostly about the failure paths, since the happy path is usually an afternoon. Payments: webhooks verified and made idempotent, so a retried callback never double credits an order, and the app state derives from the provider rather than from a local guess. WhatsApp: through the Business API with a provider, since the plain app cannot automate. Instagram: permissions kept to what the app demonstrably uses, because wider scopes are the usual cause of review rejection. Each integration tested end to end with a real transaction before hand-off. 1400 INR, 7 days. Which payment provider, and are the Meta apps already created?

@indreshpnk

Hello, I understand you need to connect your existing iOS & Android app with payment, Instagram, and WhatsApp services end-to-end. The goal is to provide secure, seamless integrations that work reliably without users leaving the app unnecessarily. Here’s what I can provide: Secure payment gateway integration with tokenized transactions, test/live modes, webhooks and clear UI error handling. Instagram authentication, profile data, sharing endpoints, long-lived tokens and rate-limit handling. WhatsApp deep-link/API integration with dynamic pre-filled messages, plus complete setup documentation and testing. I bring over 4+ years of experience in mobile app development, API integrations, payment gateways and third-party service integration, with a strong focus on security, reliability and clean implementation. Just to clarify a few things: Which payment provider are you currently leaning toward, or should I recommend one? Is the existing app built with Flutter, React Native, or native iOS/Android? Please come to the chat box to discuss more about your project. Best regards Indresh Kushwaha

@nitkarsh1

Hello, I’m a professional Web Developer with experience in building responsive, modern, and user-friendly websites. I can help you with: • Frontend development using HTML, CSS, JavaScript, React.js • Backend development using Node.js • Database integration with MongoDB/MySQL • Responsive design for mobile, tablet, and desktop • Website bug fixing and improvements • API integration and deployment I focus on clean code, attractive UI, good performance, and delivering the project on time. I have also completed a Web Development internship and work on freelance projects, so I understand both client requirements and real-world development needs. I would be happy to discuss your project and start working on it. Thank you! Best regards, Nitkarsh Web Developer