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I currently have a website that does not require user authentication or sign-in. I have also developed an Android app that similarly does not support user sign-in or authentication. Before proceeding with the Android app deployment to the Google Play Store, I am considering implementing a sign-in system so that users can create accounts and access personalized features across both the website and the mobile app.
Project ID: 40708450
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126 freelancers are bidding on average $12 USD/hour for this job

⭐⭐⭐⭐⭐ Create a Sign-In System for Your Website and Android App ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and noticed you're looking for a sign-in system for your website and Android app. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for user authentication systems. I will implement an efficient sign-in feature that allows users to create accounts and access personalized features seamlessly on both platforms. ➡️ Why Me? I can easily build your sign-in system as I have 5 years of experience in user authentication and web development. My expertise includes database management, API integration, and mobile app development. Not only this, I have a strong grip on security protocols and user experience design, ensuring a safe and smooth user journey. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing with you in chat. ➡️ Skills & Experience: ✅ User Authentication ✅ Database Management ✅ API Integration ✅ Mobile App Development ✅ Web Development ✅ Security Protocols ✅ User Experience Design ✅ Frontend Development ✅ Backend Development ✅ Testing & Debugging ✅ Java for Android ✅ HTML, CSS, JavaScript Waiting for your response! Best Regards, Zohaib
$9 USD in 40 days
7.9
7.9

Hi, I can help you with "User Authentication Integration for Website & App" as per your given project description. We can discuss more in detail during a chat conversation when you are available. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$9 USD in 1 day
8.0
8.0

Hi, I build shared authentication layers exactly like this. Rather than bolting separate login logic onto your website and your Android app, I'd stand up one central REST authentication service (JWT / token-based) that both clients talk to, so accounts, sessions and personalized data stay consistent across web and mobile. On the PHP side I'd add secure signup/login, password hashing (bcrypt/argon2), email verification, password reset and refresh-token handling. The Android app would authenticate against the same endpoints and store tokens securely, so a user's account behaves identically on both. Two things shape the approach: is your website plain PHP or a framework (Laravel/CodeIgniter), and does the Android app already call any REST API? That tells me whether I'm extending an existing API or building the auth endpoints fresh. I'd start with the core sign-in flow, then layer in the personalized features once accounts are solid. Best regards, Zahidul
$12 USD in 40 days
7.6
7.6

Implementing a user authentication system for your Android app and website is a smart move to enhance user engagement. I see you want users to create accounts and access personalized features, which can be kind of tricky. One common issue is making sure that those user data syncs correctly between the app and website, especially during sign-in. And I’ll set up a solid backend to handle this smoothly. My approach will involve integrating Firebase Authentication for a smooth sign-in experience, alongside a secure database to store user data, I’ll make sure both platforms communicate effectively so users can enjoy a consistent experience. I’m ready to go ahead and get started on this right away for $8. Rajavel Android Developer | Firebase | Google Play Store Deployment
$8 USD in 10 days
7.3
7.3

With over a decade of experience, my team at Walking Dreamz Technologies and I have successfully implemented numerous user authentication systems. Your project aligns perfectly with our expertise. Not only have we specialized in MERN and mobile app development but also in APIs, which will be crucial for integrating your website and app's user sign-in system seamlessly. One of the highlights of working with us is our commitment to clear communication. I will personally be accessible as your main point of contact throughout the project, ensuring no communication gap that could hinder progress. Additionally, our 99% positive reviews from over 300 projects underline our dedication to predictable delivery, clean code quality, and reliable post-launch support. By choosing us, you can expect production-ready solutions ensuring stability for today while being easily extensible tomorrow. Before commencing any work, I make it a point to provide tangible tech approaches, realistic timelines, and budget estimates that allow a fair assessment and shared understanding of project direction. Let's demystify user authentication for your users and take your website and app to the next level together!
$8 USD in 40 days
7.6
7.6

Hi, I went through your project details and understand what you're looking to achieve. I'd be interested in working with you on this. Based on the requirements you've shared, I can handle the project from start to completion while keeping the work aligned with your expectations, timeline, and desired outcome. My approach is straightforward: first, I'll make sure the requirements and expected deliverables are clear. Then I'll complete the work in structured stages, share progress along the way, incorporate your feedback, and deliver the final work after everything has been reviewed. Before we begin, I have a couple of questions about your requirements that will help me understand the scope more accurately. Feel free to message me so we can discuss the details and determine the best way to move forward. Best regards, Anum
$12 USD in 40 days
6.8
6.8

Hello I can seamlessly integrate a robust user authentication system across your website and Android app, ensuring a unified and secure user experience. My expertise in backend development and secure API design, utilizing tools like Firebase Authentication, guarantees a smooth implementation. Would you be interested in discussing which authentication flow best suits your user base? Best regards, Giáp Văn Hưng
$11 USD in 7 days
6.9
6.9

I can add a secure shared authentication system for both your existing website and Android app so users can create accounts, sign in, manage their profiles, and access personalized features across both platforms. I’ll integrate the login flow without disrupting the current functionality, connect both applications to the same user database/API, and make sure password security, sessions/tokens, validation, and account recovery are handled properly before the Play Store release.
$8 USD in 5 days
6.4
6.4

Dear client, I can develop sign in feature within your existing app and website, I have more than 9 years of exp in apps and web development.
$12 USD in 40 days
6.3
6.3

Hi I will be able to help you. 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. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
$8 USD in 40 days
6.6
6.6

Hi As the head of the renowned MAG Cloud Solutions, I am confident in our ability to seamlessly guide your transition towards a superior user experience on both your website and Android app. My extensive experience in Android App Development, API Development, PHP and Web Development put me in the perfect position to integrate a robust and secure user authentication system for you. At MAG Cloud Solutions, we don't just build features; we build reliable and scalable solutions that align perfectly with your business needs and goals. The integration of a user authentication system will not only enable your users to enjoy personalized experiences but will also empower you with valuable data-driven insights into your customer base, enhancing future decision making. Moreover, my proficiency in API development ensures heightened security during the integration process - a paramount consideration when dealing with personal data. My commitment to excellence means I stay updated on the latest industry trends and adapt to evolving requirements. By choosing me for this project, you're opting for dedicated support, innovative solutions, and an unwavering partner who values your success above all else.
$12 USD in 40 days
6.4
6.4

Hi, I see you're looking to integrate a user authentication system for both your website and Android app to personalize user experiences before launching on the Google Play Store. As a seasoned full-stack developer with extensive experience in PHP and API development, I can help you implement a seamless sign-in system. By leveraging secure authentication protocols and scalable API solutions, we can ensure that users can create accounts and access personalized features across both platforms. Could you share more about any specific user data you plan to manage or any third-party services you're considering for this integration?
$8 USD in 7 days
5.7
5.7

As a seasoned full-stack developer with a wealth of experience in both web and mobile app development, I bring the perfect skillset to execute your project. The user authentication integration aspect you require is something I have adept knowledge and profound expertise on. My backend skills span across various technologies including Core PHP, Laravel and Node.js, which we can skillfully employ to create a robust authentication system. I am well-versed in both native Android app development using Java and Kotlin as well as modern frameworks like Flutter and React Native, assuring seamless integration of the new feature across platforms. My proficiency isn't just limited to implementation; I am skilled in API development too, having worked extensively with APIs from major platforms such as Facebook, Twitter, LinkedIn, Instagram, and many payment gateways like PayPal and Stripe among others. This extensive experience will enable me to effectively integrate the user authentication functionality you desire for your website and Android app. Complemented by my track record of timely delivery without compromising quality, am confident that entrusting me this role will yield a highly functional integrated user authentication system for your website and mobile app.
$12 USD in 40 days
6.1
6.1

Hi, I can implement a secure authentication system for your website and Android app, allowing users to create accounts and access their personalized features seamlessly across both platforms. I can handle the complete integration, including registration, login, password reset, session management, API integration, and secure data handling. I’m ready to start and can ensure the system is reliable, scalable, and Play Store ready. Best regards, Sohail
$12 USD in 40 days
5.5
5.5

Hi, As a software developer with over a decade of experience under my belt, I can proficiently address and implement your project requirements. Having worked with industry giants like Avaya, Pramati, CGI, and more, I bring a rich skill set that will be instrumental in integrating user authentication for your website and mobile app. My focus on efficient coding, performance optimization, and scalable architectures resonates strongly with what you're looking for. In particular, my extensive experience in building high-performance, low-latency systems for complex real-time workloads aligns perfectly with the challenges of user authentication integration across both platforms. With me on board, you need not worry about system lags or any other such hindrances affecting your end-users' experience. Adding further value to your project, I have significant proficiency in Mobile App Development using Flutter and Kotlin among others. For instance, I've built trading and fintech mobile apps complete with real-time data flows, charts, and alerts - making sure security is given primary importance. Going forward, I can effectively channel this expertise to secure APIs and backend integration for seamless sign-in processes within your app. Trust me to navigate everything from App Store/Play Store deployment to performance tuning effectively. In short, Team up with me to turn your app potentienl_proprietise into real-world functionalities!
$11 USD in 40 days
5.5
5.5

I can integrate user authentication system in your mobile apps and web apps. Let’s connect to get started. Thank you.
$12 USD in 40 days
5.4
5.4

Hello, I can implement a secure sign-in and account system across your existing website and Android app, allowing users to create accounts and access their personalized features consistently on both platforms. I’ll integrate the authentication with your current backend, handle registration, login, session management, password recovery, and account data securely while keeping the existing functionality intact. Ready to start immediately.
$13.50 USD in 40 days
5.1
5.1

Hello, I appreciate the opportunity to work on enhancing your website and Android app by implementing a sign-in system. I understand that you aim to provide users with personalized features through account creation, which will significantly improve user engagement and experience. I have extensive experience in developing authentication systems for web and mobile applications, utilizing technologies such as Firebase Authentication and RESTful APIs. This expertise allows me to ensure a secure and seamless user experience across both platforms. To successfully implement the sign-in system, I would approach the project as follows: - Analyze your existing website and app architecture to integrate the authentication system smoothly. - Design a user-friendly sign-in and registration flow that aligns with your current branding. - Implement secure authentication protocols and data handling practices to protect user information. - Conduct thorough testing to ensure the functionality works flawlessly on both the website and Android app. I am eager to help you enhance your project and am confident in delivering quality results on time. Please feel free to reach out to discuss any further details or to get started right away.
$12.01 USD in 40 days
5.0
5.0

Hello, "Shared REST Authentication" - one secure sign-in across web and Android I would add a central REST authentication layer so the website and Android app use the same accounts and user data. I would keep the existing applications intact where possible, adding registration, login, token/session handling, protected API routes, and the required app integration. The important part is defining the API boundary clearly so authentication works consistently on both platforms and can support future personalized features. My confirmed stack includes PHP, Java, Android, REST API development, OAuth, databases, and web applications. Is the current website backend PHP, and does the Android app already use a REST API? Looking forward to working with you. Artur Gizycki
$15 USD in 40 days
4.7
4.7

Hi, I’m Juan Pablo. I can implement a secure, scalable authentication system across your existing website and Android app, allowing users to create accounts and seamlessly access their personalized features on both platforms. I’ll integrate secure registration, login, password recovery, session management, email/OTP verification, and protected user data, while ensuring the website and Android app communicate reliably with the same backend authentication system. I’ll also review your current architecture before implementation so the authentication layer can be added without disrupting existing functionality. Security, API protection, data privacy, and a smooth user experience will be priorities, especially with the Google Play Store deployment in mind. I can handle the implementation, testing, security checks, deployment support, and documentation, leaving you with a clean and maintainable authentication system ready for future features.
$12 USD in 40 days
4.9
4.9

India
Member since Aug 20, 2007
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