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I am taking our company’s EVM initiative together with a brand-new SaaS product to Android and need a developer who can own the mobile side from first screen to Play Store release. The immediate focus is a clean, reliable email-and-password sign-in flow. Session handling, password reset, and basic account management must feel seamless; security best practices (hashed passwords, secure token refresh, encrypted storage) are non-negotiable. We are not adding push notifications or in-app purchases right now, but the codebase should stay modular so those features can slot in later without refactoring the core. You will translate existing REST endpoints into concise Kotlin code, follow Material 3 guidelines for UI, and wire the app to our Git-based CI pipeline so each commit ships an internal testing build. Final deliverables are: • Source code in a private Git repository • Signed release APK / AAB ready for Play Store upload • Brief setup README and API usage notes If you have recent Play Store examples of secure login screens and can keep communication straightforward and proactive, let’s get started.
Project ID: 40719670
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64 freelancers are bidding on average ₹982 INR/hour for this job

With extensive experience as a Senior Software Engineer, I have honed my skills in various programming languages and frameworks including CSS, HTML, JavaScript, Python and importantly- mobile app development - which makes me the perfect fit for this project. My years of work have taught me the importance of clean code and future-proofing. I understand your needs for a robust and secure login system, with smooth session handling and enclosed within a strictly modular framework. This kind of foresight is the reason your project caught my attention. My approaches to project management align with your vision of straightforward communication and proactive engagement. Throughout our collaboration, you'll receive regular updates on GitHub illustrating a seamless integration between our work streams. I've often found this approach improves synergies between teams and helps spot any significant potential issues early on. In addition to ensuring secure login protocols and following Material 3 guidelines for UI, I can also bring my proficiency with hosting platforms such as AWS, Google Cloud and more to assist in delivering notable final products - signed release APK / AAB ready for Play Store upload and brief setup README and API usage notes. With me on your team, you'll get more than just an excellent Android SaaS & EVM app developer but a true partner in your success. Let's craft a remarkable product together!
₹1,000 INR in 40 days
6.2
6.2

Hi Khushi, I will build the Android app from first screen to Play Store release, implementing a secure email‑password login, session handling, password reset, Material 3 UI, Kotlin API calls, CI builds, and deliver private repo, signed APK/AAB and README. I can ship a working prototype in 10 days. Shall I start now? Thanks. Waiting for your response in chat! Best Regards.
₹1,006 INR in 3 days
5.3
5.3

Hi, I can develop the Android side of your SaaS product with a clean, secure and scalable Kotlin architecture, starting with the complete authentication flow. I can handle: Material 3 login and registration UI Secure session/token management and refresh Password reset and account management Encrypted local credential/token storage REST API integration with clean Kotlin architecture Modular structure for future push notifications and IAP Git-based CI pipeline with internal testing builds Signed APK/AAB for Play Store Setup README and API integration documentation I’ll focus on clean, maintainable code and security best practices without unnecessary complexity. I can also work with your existing REST APIs and Git workflow. Ready to review the API documentation and start.
₹1,000 INR in 40 days
5.4
5.4

Hello, I just finished reading your brief for "Android SaaS & EVM App", and I'm genuinely excited about the chance to work on it. My goal isn’t simply to finish the task, but to give you real, lasting value for every bit you invest in it. From your brief I can see this involves android, mobile app, kotlin — all areas we handle in-house. We specialise in JavaScript, Python, Banner Design, Mobile App Development, which lines up directly with what you need. How we'd approach it: - Finalise the screens, user flows and feature list with you - Build smooth, native-feeling UI with clean, maintainable code - QA on real devices, then prepare and ship to the store(s) - Post-launch support and iteration once you’re live I also noted you don’t need refactoring the core — that’s clear, and I’ll keep the work clean and strictly on-brief. Happy to work hourly with transparent time tracking and regular check-ins. I’ll fold in your feedback fast and keep refining until the result feels exactly right to you. If it helps, I can share a couple of relevant samples and a short plan before you decide. Looking forward to it! Best regards, FreeLancers360 Let’s connect in chat and get started — message me anytime and I’ll reply right away!
₹750 INR in 5 days
4.9
4.9

As a seasoned Full-Stack Developer, with a long tenure spanning 7+ years, I’ve successfully orchestrated the end-to-end development of various apps and SaaS products. My experience with Android UI, Java, Kotlin makes me the perfect fit for your esteemed project. I understand the paramount importance of a secure login flow and will ensure that your app aligns flawlessly with your existing REST endpoints. Material Design is my strong suit and adhering to Material 3 guidelines for a seamless UI experience would be second nature to me. I can assure you of delivering an app that's not only high-performing but also scalable and secure. Rest assured, necessary security best practices will be implemented such as hashed passwords, secure token refresh, and encrypted storage. More so, my track record in keeping an open line of communication with clients via daily updates and realistic timelines ensure you'll always be aware of project progression without any ghosting. The satisfaction of my clients is something I prioritize above all else. I have been known to go beyond code to make sure my clients make smarter technical decisions that save time and money - an aspect that I believe sets me apart from others. Additionally, my skills extend far beyond Android Development; Graphics Design being one of them too, allowing me to bring an additional layer of visual flair to your project.
₹1,000 INR in 40 days
5.0
5.0

I work as a freelancer. I am well versed with web apps development both frontend (reactjs, JS) and backend(python/java) (Mobile android and web app), database, CI/CD (github/jenkins) and devops (AWS/AZURE). I was working on django/flask/reactjs/wordpress/mysql/docker/linux etc previously. Now having a good understanding of developing full stack webapps prior to LLM tools (like chatgpt, claude etc) now its much easier and clearer to do things. Lets connect to discuss more about the project
₹1,000 INR in 40 days
4.9
4.9

As seasoned pros with 7+ years in the industry and a dedication to quality, my team at Kajal IT Service is the perfect fit for your Android SaaS & EVM App project. Our expertise lies in mobile app development and we have a deep knowledge of both Android and iOS. We are fluent in Kotlin and REST APIs, making us more than capable of translating your existing endpoints into clean, concise code. Our extensive experience translates into precise understanding of Android's best practices including Material 3 UI guidelines. We also prioritize security; implementing robust security measures like hashed passwords, secure token refresh, and encrypted storage is second nature to us. We know how important it is for each line of code to be modular for a scalable product. Our commitment to high-quality deliverables means the codebase we build today will accommodate features like push notifications or in-app purchases without needing any core refactoring. At Kajal, we believe that effective communication is key to project success, so expect nothing less than proactive, straightforward exchanges throughout our work together. Let's turn your EVM initiative into an absolute triumph!
₹1,000 INR in 40 days
5.1
5.1

Hi, I can own the Android application from architecture and first screen through internal testing and Play Store-ready release. I recommend Kotlin with Jetpack Compose, Material 3, MVVM/Clean Architecture, Coroutines, Retrofit/OkHttp, Hilt, and encrypted DataStore backed by Android Keystore. The API layer will remain separate from UI and domain logic so push notifications, purchases, and future SaaS modules can be added cleanly. The authentication implementation will include: • Email/password sign-in with clear validation and error states • Password reset and basic account management • Automatic access-token refresh with synchronized retry handling • Secure token storage and complete logout/revocation flow • Session restoration without exposing credentials • Network timeouts, offline states, and API error mapping • Unit tests for session and repository logic Passwords should be hashed and verified only by your backend; the Android app will never store or log them. I’ll also review endpoint behavior, TLS configuration, secret handling, and release logging. For delivery, I’ll configure your Git pipeline to build internal-testing artifacts on approved commits, keep signing credentials protected, and provide the private repository, signed APK/AAB, README, and concise API notes.
₹1,000 INR in 40 days
3.3
3.3

Hi, I can take ownership of the Android app from the authentication flow through Play Store release. I’ll build the email/password login, session management, password reset and account management using clean Kotlin architecture and Material 3, while integrating your existing REST APIs securely. Security will be handled with secure token refresh, encrypted local storage, proper session expiry and safe API handling. I’ll keep the architecture modular so push notifications, payments and future SaaS features can be added without restructuring the core. I’ll also integrate the project with your Git-based CI pipeline for internal builds and deliver the private repository, signed AAB/APK, README and API documentation. Are the REST APIs and authentication endpoints already production-ready? Which token/auth system is currently used JWT, OAuth2, or another method? Do you already have the Android CI pipeline configured? Can you share the existing app screens/design references? Is the Google Play Developer account and signing setup already available? I can start immediately and work toward a production-ready Play Store build. Best Regards VDinfotech
₹1,200 INR in 40 days
3.3
3.3

Hi - Kotlin, Material 3, and starting with auth is the right call because it is the piece everything else inherits. On secure token refresh specifically, the detail that bites: when the access token expires and three API calls fire at once, a naive implementation runs three refreshes and two of them invalidate the third. I use a single-flight refresh through an OkHttp authenticator so concurrent calls wait on one refresh and then retry. Tokens live in EncryptedSharedPreferences, never in plain prefs or logs. One correction worth making early: password hashing belongs on your server, not the app. The app must never hash or store a password - it posts credentials over TLS and holds only tokens. If any part of the current design has the client hashing, that is worth fixing before we build on it. Modularity: feature modules with a clean domain layer, so push notifications and in-app purchases later are additive rather than a refactor. That is a real constraint on how auth and navigation are structured, so it goes in now. Scope: sign-in, sign-up, password reset, session handling, account management, Material 3 throughout, wired to your existing REST endpoints and your Git CI. Two questions: minimum supported Android version, and is there a Figma or do I work from Material 3 defaults? - Aakaash
₹750 INR in 40 days
3.3
3.3

Hi, We appreciate your initiative to bring your EVM initiative and SaaS product to Android with a secure, reliable foundation. We understand that the immediate priority is a smooth email/password authentication flow, secure session handling, password reset and account management, while keeping the codebase ready for future features. We can develop the Android app in Kotlin following Material 3 guidelines, integrate your existing REST APIs, and implement secure token refresh, encrypted local storage and proper authentication handling. We can also connect the project with your Git-based CI pipeline so commits generate internal testing builds. We’ll provide the private repository, signed APK/AAB, setup README and API usage notes. Key questions: 1. Are the REST APIs and authentication endpoints already documented and ready for integration? 2. Which Git-based CI/CD platform are you currently using? 3. Do you already have UI/UX designs or should we create the login and account-management screens? 4. Which minimum Android version should the first release support? Note: The final cost may vary based on the confirmed scope. Best Regards, Agnidipa Team Qloron
₹1,250 INR in 40 days
3.0
3.0

With over 6 years of Android development experience, I am confident that I am the ideal fit for your EVM and SaaS initiative. My primary expertise lies in Kotlin, just what is needed for translating your REST endpoints into concise code. In addition to delivering secure login screens, my understanding of Material Design will ensure adherence to the Material 3 guidelines for a UI experience that feels premium and familiar. In terms of session handling and basic account management, my experience with Firebase can guarantee a seamless flow. Again, security is non-negotiable so do know that my implementations include hashed passwords, secure token refresh, and encrypted storage. Additionally, my familiarity with Git-based CI pipelines will enable the app to advance rapidly through your internal testing system. I take pride in producing clean, maintainable architecture with high attention to optimization. While we are not catering to push notifications or in-app purchases currently, I construct codebases in a modular manner. So should these features be required later, they can be effortlessly integrated without significant refactoring. Your project deserves nothing but the best and if you choose me, I guarantee you'll have an exceptional Android app that's ready for the Play Store shelves sooner than you think!
₹1,000 INR in 40 days
3.1
3.1

Hello. Thank you very much for your chance. I have read your project description carefully. I'm a Web, AI & Android Custom | Python, WordPress, Java with over 8 years of experience working with Android, Kotlin, Mobile App Development. I understand you need the mobile side of your SaaS and EVM product: secure email and password sign-in, session handling, password reset and account management, wired to your REST endpoints and CI pipeline. The real challenge is token handling on Android. A common issue: tokens are stored in plain preferences, so a rooted device can read them. I would keep tokens in EncryptedSharedPreferences and refresh them safely. I can build it perfectly : First, project setup with Material 3 and the auth screens. Then, wire the REST endpoints and secure storage. Finally, connect CI for internal builds and produce the release AAB. Q1 - Is the refresh token long-lived or rotating? That decides the retry and logout logic. Q2 - I'd build auth as a separate module so push and in-app purchases slot in later. Agree on that structure? Q3 - Are your REST endpoints already documented, or should I work from the code? Let's connect over a chat so we can discuss this in more detail. Best regards , Muheebwa
₹2,500 INR in 40 days
2.7
2.7

Hi, I have developed several Android applications, SaaS mobile clients, secure authentication flows, REST API integrations, and production apps using Kotlin, Android Studio, Material Design, and Git-based CI/CD. ? The main challenge is implementing a secure and reliable authentication foundation that works smoothly with your existing REST API while keeping the codebase modular for future features. ✅ In similar Android projects, I worked with Kotlin, MVVM architecture, Retrofit, secure token handling, encrypted local storage, session management, password reset, account management, and Material 3 UI. I can integrate your existing REST endpoints with clean Kotlin services, handle access and refresh tokens securely, protect authenticated screens, and manage loading, validation, error, and session-expiration states consistently. ✅ I can structure the project so authentication remains separated from future modules such as push notifications and in-app purchases. I would also connect the repository to your Git-based CI pipeline so each commit generates an internal testing build, then prepare the signed APK/AAB, README, API usage notes, and Play Store release configuration. I can also share relevant Android work and secure authentication examples during the discussion. With this kind of experience, I can contribute to implementing your idea and vision. Looking forward to discussing your requirements with you. Best regards Michel
₹900 INR in 40 days
2.7
2.7

Hi, I can take complete ownership of the Android side of your EVM/SaaS product—from the first authentication screen through a production-ready Play Store build. I have 3+ years of full-stack development experience and am comfortable working with existing REST APIs, authentication systems, Git workflows and production deployments. For your Android app, I’ll deliver: • Native Kotlin application with Material 3 UI • Clean email/password login and account management • Password reset and seamless session persistence • Secure access/refresh-token lifecycle • Encrypted local storage for sensitive credentials/tokens • Clean REST API integration with proper loading/error states • Modular architecture so push notifications, payments and additional SaaS modules can be added later • Proper validation, logout/session-expiry handling and API error management • Git-based CI pipeline generating internal testing builds on commits • Testing across common Android versions/screen sizes • Signed APK/AAB ready for Play Store submission • Complete source code + setup README and API documentation I would structure the app using Kotlin + Jetpack Compose, MVVM/Clean Architecture, Retrofit/OkHttp, Coroutines and secure Android storage practices. I can work directly with your existing backend/API contracts, keep communication clear throughout development, and handle the mobile implementation end-to-end. Ready to review the API documentation and start immediately. Apoorva
₹750 INR in 40 days
2.9
2.9

Hello, I understand you need an Android developer to take your company’s EVM initiative and SaaS product from the first screen through Play Store release, starting with a secure email/password authentication flow. The goal is a clean Kotlin codebase with seamless sessions, password reset and modular architecture. Here’s what I can provide: • Build Kotlin + Material 3 authentication with secure token refresh, encrypted local storage and password reset • Integrate your REST APIs with clean, maintainable Kotlin networking and account-management flows • Connect the project to your Git-based CI pipeline for automated internal testing builds and deliver signed APK/AAB I bring over 4+ years of full-stack development experience with Python, JavaScript/TypeScript, React, REST APIs, databases and cloud services. I can work closely with your existing API contracts while keeping the Android architecture modular for future notifications, payments and additional SaaS features. Just to clarify a few things: • Are your REST authentication endpoints and API documentation already finalized? • Which Git/CI platform are you currently using for automated Android builds? Please come to the chat box to discuss more about your project. Best regards Indresh Kushwaha
₹1,000 INR in 40 days
2.6
2.6

I can take ownership of the Android side from the first login screen through Play Store-ready release, with security and clean architecture as the main focus. I have 5 years of full-stack development experience and have worked with Android apps, REST APIs, authentication, backend systems and production deployments. I’ll build the email/password login flow in Kotlin with Material 3, including secure session handling, password reset, account management, hashed passwords, secure token refresh and encrypted local storage. I’ll connect your existing REST endpoints with clean Kotlin code and keep authentication modular so push notifications, in-app purchases or other features can be added later without changing the core. I’ll also connect the project with your Git-based CI pipeline so every commit can generate an internal testing build. You’ll receive the private Git repository, signed APK/AAB, setup README and API usage notes. I can also share relevant Android login work in chat. Best regards, Ritesh N
₹750 INR in 40 days
2.3
2.3

With decades of experience spanning academia and industrial software engineering, my skill set exceeds the bar for this project. I'm seasoned in translating API endpoints into clean and concise Kotlin code, bridging reliable data transmission to secure user authentication. Apart from my technical qualifications, my recent work as Chief Technology Officer of an AI startup provided me with the familiarity of developing scalable, modular backends for Saas apps like yours that are ready for feature expansion. The trust you place in your hire's adherence to security practices is a great testament to the importance of professionalism and attention to detail. That's what you get by choosing me. As evident from my experience in custom-built AI tools, I understand crypto-hashing, token refresh and encrypted storage mechanisms vitally intertwined with our project. My fluency with Git-based CI pipelines also aligns perfectly with your internal testing build objective, leaving no room for bottlenecks.
₹750 INR in 40 days
2.0
2.0

Hi, I can build and own the Android application from the initial UI through Play Store release. I’ll use Kotlin with Material 3, implementing secure email/password authentication, session handling, password reset, account management, encrypted local storage, and secure token refresh. I can integrate your REST APIs, maintain a modular architecture, and connect Git-based CI for automated internal builds. I’ll deliver the private repository, signed APK/AAB, README, and API documentation with clear communication throughout.
₹1,000 INR in 40 days
1.4
1.4

hi there, Most login bugs i see come from token refresh firing twice at the same time and randomly logging users out. Sounds small but it kills trust in an app fast, so i always make sure that part is rock solid before anything else. I work in Kotlin with Material 3 and have shipped apps with secure sign-in, token refresh and encrypted storage to the Play Store. Keeping it modular so push and in-app purchases can slot in later is something i plan for from day one. Got recent Play Store examples i can show u once we connect. Quick q, are ur endpoints using JWT with refresh tokens or session based auth? Would also love to hear more about the SaaS and the EVM side. Lets hop on a quick call, i keep communication simple and regular so ur never left guessing. Drop me a msg
₹800 INR in 40 days
1.4
1.4

Ahmedabad, India
Member since Aug 7, 2026
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