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I need a developer who can quickly wire a WhatsApp-based one-time-password flow into my cross-platform Flutter app. The goal is to add two-factor authentication, so after users log in with their usual credentials they receive a WhatsApp message containing the verification code. The backend work is already complete on my side; you’ll get the API endpoint details, key, and the service provider credentials as soon as we start, so you can focus solely on the client-side implementation and the callback handling inside Flutter. To wrap this up smoothly I’ll expect: • clean, well-commented Dart code that triggers the OTP request, listens for delivery status, and validates the returned code; • graceful error handling and user feedback for edge cases (delays, wrong code, expired code); • a short README outlining any new dependencies and the widget / service class you introduced. Once everything compiles, runs on both iOS and Android builds of the Flutter project, and the verification flow passes a brief live test with my credentials, the job is done.
Proje No: 40082712
23 teklifler
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23 freelancer bu proje için ortalama ₹506 INR/ saat teklif veriyor

As an expert Android and Flutter developer, I understand the essence of crafting clean, well-commented code that seamlessly integrates third-party APIs into apps. Throughout my 8+ years in IT, I've honed my skills integrating various APIs including Facebook, Google, Paypal, and Twilio (similar to WhatsApp) into numerous projects. Drawing from this wealth of experience, I am perfectly positioned to handle your project's OTP integration. Moreover, my proficiency in Flutter (5yrs+) specifically will be an asset in ensuring your app enjoys seamless compatibility across both iOS and Android platforms. My commitment to quality can be seen not only in my coding skills but also in my knack for error handling and user feedback systems design - skills that align perfectly with your project needs. Finally, besides my technical abilities and extensive project experience with different clients worldwide, I believe excellent communication is central in executing successful projects. As a passionate coder who loves a good match of client needs and IT solutions, I'm confident we can work together efficiently on this project and ensure our lines of communication are open throughout. Let's leverage the power of Flutter and Whatsapp APIs to solidify your app's security features.
₹500 INR 40 gün içinde
6,2
6,2

I can integrate the WhatsApp OTP 2FA flow in your Flutter app (iOS + Android) using your existing backend endpoints. I’ll add a clean service + UI step after login to: request OTP, handle delivery/status callbacks (if your API provides them), verify the code, and persist the verified session. Includes solid UX (loading, retries, expired/wrong code states) and well-commented Dart. I’ll also provide a short README with any dependencies and how to maintain the flow.
₹250 INR 40 gün içinde
4,9
4,9

Hello there Vyman H., Good morning! Already have something live to show you I am professional mobile coder with skills including Android, Dart, Mobile App Development, Flutter, API Integration and Mobile Development. Please send a message to discuss more about this project. Best Regards
₹4.478 INR 30 gün içinde
3,8
3,8

Hi, I'm a skilled flutter app developer with extensive experience in creating high-quality mobile applications. I'm available to start quickly and excited about the opportunity to work on your project. Please DM me here so we can discuss project in details and finalise the rate. Best, Khushal Chothani
₹300 INR 40 gün içinde
3,6
3,6

Dear Hiring Manager, I can implement the WhatsApp-based OTP flow into your cross-platform Flutter app efficiently. Using the API endpoint, key, and service provider credentials you provide, I will integrate client-side OTP handling fully within Flutter. Deliverables will include clean, well-commented Dart code that triggers the OTP request, monitors delivery status, and validates the returned code. I will ensure robust error handling with clear user feedback for delays, wrong codes, or expired OTPs. Additionally, I will provide a concise README detailing any new dependencies and the custom widget or service class added for this feature. The implementation will be fully tested to compile and run correctly on both iOS and Android, with the verification flow passing a live test using your credentials. My focus is on a reliable, maintainable, and user-friendly two-factor authentication experience that integrates seamlessly with your existing login flow. Regards, Jagrati!
₹100 INR 40 gün içinde
3,5
3,5

As a seasoned Full Stack Web Developer, with proficiency in Flutter, I am well-suited to seamlessly integrate the required WhatsApp OTP functionality to your Flutter app. In my 5+ years of experience, I've successfully executed numerous API integrations and smartened up front- and back-end of varied web applications for performance, UX, and security -skills that will be highly beneficial in delivering a clean and efficient OTP flow for your users. My profile speaks not only of my proven skills but also of my ability to deliver on-time while staying within budget. Meticulous and detail-oriented, I have a strong track record in delivering robust code solutions fortified with thorough documentation that makes them easier for any team member to maintain. Gathering from your project description, these traits will be particularly valuable in light of the comprehensive Readme file you are looking for. Lastly, my communication skills are quick and effective so you can trust me to reach out promptly should there be any issue during the implementation process. My dedication to customer satisfaction is unstoppable until we achieve full functionality running smoothly on both iOS and Android devices. Rest assured, I am equipped to bring your vision of a secure two-factor authentication into reality. Let’s connect and build something great together!
₹250 INR 40 gün içinde
3,3
3,3

As an experienced mobile app developer, I would be a strong fit for your WhatsApp OTP integration project. I have a proven track record of successfully implementing complex functionalities, such as the one-time-password feature you require. Over my career, I’ve coded robust and efficient solutions to manage user registration, authentication, and security, which aligns closely with your project needs. Furthermore, my fluency in both iOS and Android platforms will ensure a smooth cross-platform Flutter app integration. Your expectation of clean, well-commented code with proper error handling resonates well with my approach to constructing reliable applications. My projects are characterized by their simplicity and efficiency in engaging—and delighting—end users. In sum, I'm confident in my ability to bring your vision to life while also adding my own unique insights into the project. My experience makes me poised to deliver not just what you're asking for, but an overall solution focused on usability and convenience. Thank you for considering me for this project—I'm looking forward to hearing from you soon!
₹400 INR 40 gün içinde
2,5
2,5

Hi, I've reviewed your project and completely understand your requirements. My 4+ years as a Flutter Developer and expertise in AI (Master's in AI, UMT) perfectly match your needs. I have proven experience with Indian market apps like Matka, UPI, DTH recharge, and doctor appointment systems. I deliver high-performance Android/iOS apps with robust backends (Firebase, Laravel, Node.js). My focus is on integrating intelligent AI features and providing custom AI solutions to make your project stand out. I prioritize dedicated collaboration to ensure precise results. Let's discuss how my skills can bring your vision to life for the Indian audience. Looking forward, Muhammad Umair
₹400 INR 40 gün içinde
0,7
0,7

Hello , I can help integrate the WhatsApp-based OTP flow into your Flutter app quickly and cleanly. Since your backend APIs are already ready, I’ll focus on the Flutter side—triggering OTP requests, handling callbacks, verifying codes, and managing edge cases like delays, wrong or expired codes. You’ll get well-structured, commented Dart code, smooth user feedback, and a short README explaining the implementation. I’ll also make sure everything works on both iOS and Android before delivery. Ready to start as soon as you share the credentials. Best regards, As Technolabs
₹200 INR 40 gün içinde
0,0
0,0

Hi, I can quickly integrate a WhatsApp-based OTP flow into your Flutter app with clean, well-commented Dart code. I’ll handle the OTP trigger, validation, callbacks, and proper error handling for delays or wrong codes. The solution will work smoothly on both Android and iOS, with a short README explaining the setup. lets connect for quality work - will enjoy our working style chat for past result
₹250 INR 40 gün içinde
0,0
0,0

Hello, I can quickly integrate a WhatsApp-based OTP flow into your Flutter app and keep it clean, stable, and production-ready. Since your backend is already complete, I’ll focus fully on the client-side logic and callback handling. I will: * Implement Dart services/widgets to request the WhatsApp OTP using your API details. * Handle delivery status, OTP input, validation, expiry, and retry logic. * Add clear user feedback for delays, wrong codes, and expired OTPs. * Ensure the flow works consistently on both Android and iOS builds. * Keep the code well-commented and easy to maintain. Deliverables will include the working Flutter implementation, graceful error handling, and a short README explaining new dependencies and how the OTP flow is wired. I can start immediately and complete this quickly once credentials are shared. Regards, Amit & Raju Voxelate
₹350 INR 40 gün içinde
0,0
0,0

Hi , I hope you’re doing well. Understanding Your Needs You need to add a WhatsApp-based OTP (2FA) flow to an existing Flutter app, where users receive a verification code on WhatsApp after their normal login. The backend is already implemented, so the focus is purely on Flutter client-side integration and callback handling for both iOS and Android. Proposed Approach I’ll integrate your provided API endpoint and credentials into Flutter with clean, well-structured Dart code. Scope includes: • Triggering OTP requests after login • Handling delivery status and responses • Secure OTP input and validation flow • Graceful error handling (expired code, wrong code, delays, retries) • Clear user feedback and loading states The implementation will be platform-safe, lightweight, and easy to maintain. Deliverables • Clean, commented Dart code (service + UI/widget layer) • WhatsApp OTP flow working on iOS & Android • Short README documenting dependencies and architecture • Live test with your credentials before sign-off Experience With 13+ years of mobile and full-stack experience, I’ve integrated OTP, 2FA, and custom auth flows in Flutter apps using third-party messaging and verification services. I focus on reliability, UX clarity, and clean code. I can start immediately and complete this quickly. Best regards, Davinder Pal
₹250 INR 40 gün içinde
0,0
0,0

I can quickly add this WhatsApp-based OTP verification flow to your Flutter app. I have solid experience implementing OTP and 2FA flows in Flutter for both iOS and Android. Since your backend is already ready, I’ll focus entirely on the client-side integration and callback handling. What you’ll get: Clean, well-commented Dart code to request and verify the WhatsApp OTP Proper handling for delays, wrong codes, and expired OTPs Clear user feedback and smooth UX A short README covering new dependencies and implementation details The flow will compile and run cleanly on both Android and iOS and will be verified with a live test using your credentials. Once it works end-to-end, the job is done. Ready to start immediately.
₹250 INR 40 gün içinde
0,0
0,0

Hi, I can integrate the WhatsApp OTP flow into your Flutter app quickly and cleanly. I have experience working with Flutter API integrations and client-side authentication flows, including OTP verification and handling delivery status, errors, and edge cases on both iOS and Android. Here’s what I’ll do: Implement OTP request trigger in Flutter using your API Listen for delivery status and validate the returned code Handle errors (delays, wrong codes, expired codes) with proper user feedback Provide well-commented Dart code and a short README explaining any new classes or dependencies I can start immediately and ensure the flow works smoothly for a brief live test. Quick question: Are you using a specific WhatsApp OTP provider library, or should I implement the API integration from scratch? Thanks, Mohammed Ali
₹300 INR 40 gün içinde
0,0
0,0

Hello, I have hands-on experience in Flutter and have worked extensively with API integration, authentication flows, and OTP-based verification systems. I can efficiently implement the WhatsApp OTP flow in your Flutter app using the API details and credentials you provide.
₹250 INR 40 gün içinde
0,0
0,0

Hi, I can integrate a WhatsApp-based OTP (two-factor authentication) flow into your Flutter app quickly and cleanly for both Android and iOS. Since your backend and provider setup are already complete, I’ll focus entirely on the Flutter client side—triggering the OTP request, handling callbacks, and validating the verification code. I’ll structure the solution with a dedicated service and reusable widgets, keeping the code well-commented and easy to maintain. I’ll also implement graceful error handling and user feedback for delayed delivery, invalid or expired codes, and network issues. A short README will be included to explain any new dependencies and how the OTP flow plugs into your existing login process. Once the flow compiles, runs on both platforms, and passes a live test with your credentials, the task is complete.
₹250 INR 40 gün içinde
0,0
0,0

Woburn, India
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