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Project Title: Fix Firebase Phone Authentication (OTP) & Google Cloud Configuration for FlutterFlow App Project Description: I am developing a Job Portal app called "Maharojgar" using FlutterFlow. The app is nearly complete, but I am facing a persistent "Not Authorized" error with Firebase Phone Authentication. I need an expert to audit and fix the backend configuration. Key Tasks to be Done: Fix Authentication Error: Resolve the "This app is not authorized to use Firebase Authentication" error that appears during the OTP request. Google Cloud Audit: Verify and fix API Restrictions and Credentials in the Google Cloud Console. SHA Key Sync: Ensure SHA-1 and SHA-256 fingerprints are correctly configured and synced across Firebase, Google Cloud, and FlutterFlow. Package Name Verification: Double-check the consistency of the Package Name ([login to view URL]) in all consoles. Identity Toolkit & App Check: Ensure Identity Toolkit API is enabled and Firebase App Check (if needed) is correctly set up. Testing: Verify that the OTP is successfully sent and received on a real Android device (APK). Requirements: Proven experience with FlutterFlow and Firebase integration. Strong understanding of Google Cloud Console settings and billing. Ability to communicate in Marathi or Hindi is a big plus for better coordination. Must be able to complete this task quickly as the project is in the final stage.
ID Projek: 40343157
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नमस्ते! ? I'm a Flutter developer with hands-on Firebase + Google Cloud experience. I've handled exactly this type of configuration issue before and can get it resolved quickly. I'll audit your GCP credentials, SHA key setup, package name consistency, and Identity Toolkit config — and verify the full OTP flow on a real Android device before wrapping up. Hindi communication is no problem at all. Happy to jump on a call and get started right away.
₹700 INR dalam 1 hari
0.0
0.0
13 pekerja bebas membida secara purata ₹992 INR untuk pekerjaan ini

Hello, i have been working as android developer for more than 10 years. I have a day off today and i want to continue working again on my freelancer account so starting with this project. Looking forward to hearing from you. i understood the task of otp error due to SHA key or auth code error will charge only 1100 for this project.
₹1,100 INR dalam 7 hari
5.5
5.5

Hello, I bring 8+ years of experience in mobile app development and backend integrations, with strong expertise in Firebase, Flutter/FlutterFlow, and Google Cloud configuration. I have resolved similar OTP authentication and authorization issues across multiple apps. Deliverables: Fix Firebase Phone Auth error, configure SHA keys, verify package setup, enable required APIs, and ensure successful OTP testing on a real device. Why hire me: I provide quick, precise debugging with a deep understanding of Firebase and Google Cloud. Collaboration: I ensure clear communication (Hindi supported), fast turnaround, and step-by-step updates until your app is fully functional.
₹1,050 INR dalam 7 hari
4.5
4.5

As a seasoned developer with over 8 years of experience, I’m confident that I can resolve the errors you’re experiencing with Firebase Phone Authentication for your Maharojgar app. With my deep understanding of FlutterFlow and Firebase integration, you can trust that I'll dig into the backend configuration thoroughly to identify and fix the “Not Authorized” error. My strong knowledge in Google Cloud Console settings and billing would help me efficiently verify and rectify any API restrictions and credentials. Apart from being technically adept, I believe my ability to communicate in Marathi and Hindi gives us an added advantage in managing this project seamlessly. Since we are already at the final stage of development, timeliness is crucial; and rest assured, I would prioritize your project and complete it promptly without compromising on quality. Moreover, I’ve had hands-on experience with Web scraping using PHP CURL and mobile app development using frameworks like Ionic, Cordova, and Flutter. This comprehensive skill set aids in solving complex issues by considering multiple aspects of the project. Let’s work together to eliminate all backend glitches so that you can launch your job portal app smoothly!
₹1,500 INR dalam 1 hari
3.8
3.8

Hi, I can help you quickly fix the Firebase Phone Authentication issue in your FlutterFlow app. I have experience with Firebase, Google Cloud configuration, SHA key setup, and resolving “Not Authorized” errors. I’ll audit your setup, fix API restrictions, verify package name and fingerprints, and ensure OTP works properly on a real device. I can start immediately and complete this quickly. Also comfortable communicating in Hindi/Marathi ? Let’s connect.
₹600 INR dalam 7 hari
3.3
3.3

Hello, I bring 8+ years of experience in mobile app development, specializing in Flutter and Firebase integrations. I have resolved complex OTP and authentication issues, configured Google Cloud APIs, and synced SHA keys for seamless app authorization. Deliverables: audit and fix Firebase Phone Authentication, verify Google Cloud API credentials, sync SHA-1/SHA-256 fingerprints, confirm package name consistency, enable Identity Toolkit & App Check, and fully test OTP flow on a real Android device. Why hire me: I work efficiently under tight deadlines, ensure accurate configuration, and provide clear, step-by-step validation so your app is deployment-ready. I communicate clearly in English, Hindi, or Marathi for smooth collaboration.
₹1,400 INR dalam 7 hari
3.4
3.4

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank Sahu
₹1,050 INR dalam 7 hari
0.0
0.0

I saw your project and am confident I can deliver on this. I'm currently working on a similar project and understand the importance of fixing Firebase Phone Authentication errors. By ensuring proper configuration in Firebase, Google Cloud, and FlutterFlow, I can guarantee a seamless experience for users of your "Maharojgar" Job Portal app. Rest assured, the authentication error will be resolved, providing the required benefit of a smooth OTP process, essential for user engagement and security. I invite you to view my portfolio, which showcases the quality and results of my past work. With a proven track record in FlutterFlow and Firebase integration, I am well-equipped to handle the complexities of your project. Let my expertise speak for itself when it comes to resolving backend issues efficiently and effectively. I look forward to hearing from you. Regards, Sadiya
₹1,050 INR dalam 7 hari
0.0
0.0

Hello, I hope you are doing well I have read your Complete description you need a Experienced Flutter developer for your project. I have more than 3 years of work experience in Mobile application development have a hand-on experience in many terms like Figma to Flutter, Firebase, Google maps and Rest APIs integrations I am confident that will handle your task in a reasonable price and time and I am available to start working on it Let's chat to Proceed
₹600 INR dalam 7 hari
0.0
0.0

I will resolve the Firebase Phone Authentication "Not Authorized" error by auditing your Firebase and Google Cloud Console configurations. This includes verifying API restrictions, syncing SHA keys, checking package names, enabling the Identity Toolkit API, and setting up Firebase App Check. I understand FlutterFlow and Firebase integration thoroughly and will ensure OTP testing on a real Android device. Since I am new to freelancer, I would like to extend a special offer to you at a discounted rate of 15%. Based on what I know about your needs, I believe that we would work incredibly well together. However, please note that this offer will only be valid until the end of the day. Are you tired of struggling with freelancers who doesn't communicate throughout the project, don't keep you updated, miss deadlines and has excuses for why projects are behand schedule or not exactly how you want it? If so, reach out to me. Regards, Adriaan Potgieter.
₹700 INR dalam 7 hari
0.0
0.0

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