Cross-Platform Mobile App Collaboration

@Microlent

Hi, I went through your requirement and this is exactly the kind of Android work my team is experienced with. We have worked on advanced Android systems that use subscription models, native libraries, NDK, JNI bridges, and deep OS-level integrations. We can help stabilize your current architecture, remove dependencies on external apps, and build an independent, scalable platform for long term growth. We understand this is not a fresh app but a live system with active global users. That means careful refactoring, backward compatibility, crash-proof updates, and clean integration with existing native components. We can continue development smoothly because you already have the needed technical documentation. Our relevant strengths: • Senior Android engineers with strong experience in Kotlin and Java • System-level understanding including NDK, JNI, AIDL, native libraries and memory management • Expertise in subscription based apps (monthly or yearly) • Ability to take over live systems without breaking existing user flows • Strong experience with architecture redesign, stability improvements and performance tuning Before we proceed, I would like to know: 1. Which native libraries or modules the current app depends on 2. What parts of the system need to be fully decoupled in the first stage Happy to discuss details in chat. Ready to start immediately. Best, Jenifer

@corpmember29

Hello! I’ve carefully reviewed your requirements, and this opportunity aligns very well with my experience and technical background. I have over 10 years of hands-on expertise in Android development, including deep system-level work, JNI/NDK, native library integration, and advanced internal Android mechanisms. I’ve also worked on complex, high-traffic applications that require stability, performance optimization, and scalable architecture—so I’m comfortable joining an existing codebase and elevating it to the next stage. **** You may follow the project's development using the tracker. I am available for work 40 hours a week **** Given that your app is already live with an active global customer base and subscription system, I understand the importance of reliability, security, and a clean transition toward becoming a fully independent platform. With the technical documentation already prepared, I’m confident I can onboard smoothly and begin contributing quickly. I’m also very interested in the long-term vision you described. Taking on a lead developer role with the possibility of partnership and profit-share is something I take seriously, and I would be happy to discuss this in more detail. Please feel free to message me with more information or to schedule a call. I’d be glad to learn more about the project and the next steps. Looking forward to speaking with you. Thanks, Christina

@Julian29

Hello!! " Cross-Platform Mobile App Collaboration " I have similar kind of expertise and work experience. , I have gone through your requirement and understand that,you are looking for highly skilled, qualified, and experience (Android ,iphone /ipad) Mobile App with development API web services where admin can manage the app from backend development team for your project. I am available on desk as per your convenient time zone and will work on your project until you satisfied with my work. Awaiting for your positive response. Thanks Julian

@tangramua

Dear Daniel G.,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in Python, Mobile App Development, Android, UX / User Experience, React Native, Flutter, Mobile Development, Android App Development, Android Studio, WebRTC and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details.    Best regards, Sales department Tangram Canada Inc.     

@divumanocha

Hello, I came across your project and found it truly interesting. With over eight years of hands-on experience in this field, I have successfully delivered high-quality solutions to clients worldwide. My dedication to excellence is reflected in the 180+ positive reviews from satisfied clients. I’d love to bring this expertise to your project and ensure outstanding results. However, I do have a few important points I’d like to clarify to align perfectly with your vision. Let’s connect via chat, where I can also share relevant examples of my past work. I'm looking forward to hearing back from you! Best Regards, Divu.

@h2hvishwakarma

Hi there, I hope you’re doing well. I have carefully read your requirements, and I would love to work with you on this project. I have 7+ years of experience in Mobile App Development, and my team and I have already worked on subscription-based apps, NDK/JNI integrations, native library setups, and system-level Android features, so I’m fully confident I can support and improve your existing platform. Please feel free to message me so we can discuss your goals, timeline, and technical documentation in more detail. Looking forward to hearing from you. Thank you! Harish

@caroldata

I am an experienced Android developer with extensive work on live applications, subscription services, and deep system-level integrations including JNI/NDK and native libraries. I can help stabilize your existing infrastructure, transition the app to a fully independent system, and continue development to enhance performance and user experience. I am very interested in a lead developer role and the opportunity to contribute significantly to the project’s growth, including a potential partnership under a formal contract. I’d be happy to discuss the project further and review the technical documentation so we can plan the next steps efficiently. Best regards,

@abhisaini0188

Hello there!! Having worked on a diverse range of full-stack development projects for over 8 years, I genuinely enjoy taking on challenging tasks and seeing them through to success. In particular, my experience in cross-platform mobile app development Android, React Native, and Flutter - aligns perfectly with the needs of your project. By leveraging these skills, I can help streamline your app's infrastructure for independent system operation while ensuring compatibility across different platforms. My proficiency in working with advanced system mechanisms and integrating native libraries can aid in stabilizing the existing infrastructure - a crucial step toward enhancing app performance. Having tackled a variety of complex projects before, I wholeheartedly believe I have what it takes to handle the technical aspects of this endeavor efficiently. Lastly, I am thrilled by the potential your application holds and the opportunity to contribute as a lead developer. I believe our collaboration should be mutually beneficial and I am open to discussing proposals for partnership that align with our shared objectives. My main priority has always been client satisfaction; thus, you can rest assured that any instructions or guidelines provided will be meticulously followed and executed during the project's lifecycle. Let's connect soon and discuss this lucrative prospect in more detail!

@ciss26

Hello there Hope you are doing well as you are looking for a "Build a android and ios mobile application " so will make the same as you want , I have already develop and Design the so many Application , - I will use latest technology to develop your Application - I will share daily update with you - I Will deliver your project within timeline - After project completion will share complete source code - I will provide 1 year support our develop work - I have 10+ year experience in Web & App development - I will make the 100% responsive design , fast loading , SEO friendly and all - I will provide you super admin panel there you can manage the whole thing Please initiate the chat so will discuss together and all Thanks & Regards Dheeraj K.

@hoangnn90

✅Full Experience in Cross-Platform Mobile App with Android/Kotlin/React Native/Flutter Programming✅. ✳️I am very confident that complete your project perfectly. ✳️I can guarantee the quality of the job and deliver the result on time. I hope we will discuss in more detail via chat. Best regards!

@ixorawebmob

Hi Daniel, Hope all is good at your end! I am excited to have the opportunity to contribute to your cross-platform mobile app. I understand you’re looking to transform your existing application into a fully independent system while stabilizing the infrastructure for your global customer base. I believe I am the best fit for this job because: - I have extensive experience in Android development, ensuring smooth integration and enhancing system performance. - My strong understanding of JNI/NDK and native libraries will facilitate the transition you need. - I am dedicated to creating user-centric applications that prioritize UX, ensuring high engagement and retention rates. I’m eager to discuss this further and see how I can help propel your project forward. When would you be available for a chat?

@trm66614

Hi there,Good morning I am Talha. I can work with your project skills Android Studio, Android App Development, Python, WebRTC, React Native, Mobile App Development, Android, Mobile Development, Flutter and UX / User Experience I am excited to present my proposal, which centers around a personalized approach designed to elevate your project. We will start with an in-depth consultation to gain a deep understanding of your project's unique requirements, goals, and constraints. Our commitment to customization means that we will tailor our services to align perfectly with your project, and we will explain how this approach will meet your expectations. Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan

@rbtech1984

Hello There!!! ⚜⭐⭐⭐⭐⚜(( transforming your existing Android subscription app into a stable, fully independent platform ))⚜⭐⭐⭐⭐⚜ Your project stood out because it involves taking a live application with a global user base and evolving it into a robust, self-sufficient system. You need a lead Android developer capable of stabilizing infrastructure, integrating native libraries, and continuing feature development efficiently. With extensive experience in Android development, JNI/NDK integration, and system-level optimization, I have successfully led complex mobile projects from live deployment to scalable improvements. I focus on performance, maintainable code, and smooth user experiences while ensuring seamless collaboration with existing systems. Three key features • Stabilization and enhancement of live Android app • Deep system-level expertise with native library integration • Scalable development to support subscriptions and global users I am ready to take a lead role and contribute immediately to help realize the app’s full potential. Warm Regards, Farhin B.

@Rekhathakur

Hello I have thoroughly reviewed your project description and am confident in my ability to assist you in completing it successfully. I believe it would be highly beneficial to delve deeper into the specifics of the job to determine the most effective way forward. I am open to scheduling an interview at your convenience, and I genuinely appreciate the chance to collaborate with you on this project. Your response is eagerly anticipated, and I'm excited about the prospect of working together. Thank you for considering my proposal. Looking forward to your prompt reply! Best regards Rekha!!!

@abhishek060

Hi, With strong expertise in advanced Android development, JNI/NDK, and system-level integrations, I’m ready to stabilize your existing infrastructure and lead the transition to a fully independent, high-performance application. I’d be glad to contribute as a long-term technical partner and help drive the platform’s continued growth. Can we discuss on chat. Regards Abhishek

@rehmananjam786

With a solid background in Android and a focus on cross-platform development, I am confident I have the skills necessary to convert your app into a fully independent system. My experience with JNI/NDK and integrating native libraries will be vital in transforming the existing infrastructure and enhancing platform performance. I pride myself on building user-friendly applications that meet client demands, just as you outlined yours. Working with you, I'll ensure we stabilize the current system while efficiently implementing new functionalities. You can trust that your project will remain on course as I am well-versed in stepping into ongoing projects and contributing my expertise without any delays. Moreover, as an app developer who understands the significance of partnership structures, I'm intrigued by the potential opportunity to become a company partner. This project aligns with my career aspirations and I am prepared to give it my all to ensure its success. Let's discuss further details and potential synergies between my skill set and your needs.

@KarthikTechCon

Hi, I’m Karthik — Senior Android Engineer with 10+ yrs experience building high-performance, subscription-based apps, deep integrations with native libraries, and system-level features using JNI/NDK. Your project — stabilizing an existing global app and transforming it into a fully independent platform — aligns perfectly with my background. What I bring ✔ Expert in Android SDK, Kotlin/Java ✔ Strong JNI/NDK experience (native libs, C/C++ integration) ✔ Deep system-level knowledge (permissions, services, memory, background tasks) ✔ Experience with apps that integrate with external applications ✔ Subscription systems (monthly/yearly), in-app billing, Play Store compliance ✔ Performance optimization + infrastructure stabilization ✔ Ability to continue work seamlessly using your current technical docs What I will deliver • Full refactoring and stabilization of the existing codebase • Remove dependency on external apps & build an independent flow • Optimize native integrations & fix JNI/NDK-level issues • Improve app performance, stability, and subscription reliability • Plan next development phases with a long-term roadmap • Can take a lead developer role with commitment to growth Why me • 10+ yrs Android expertise • Worked on global apps with active user bases • Comfortable with ownership, leadership & long-term collaboration • Open to profit-share/partnership with a transparent contract Happy to discuss technical details and next steps.

@tbrandt78

Hello As a seasoned mobile engineer, I specialize in translating complex concepts into elegant and user-friendly solutions. Over the past 8+ years, I have successfully designed and deployed numerous native and cross-platform Android applications with high user satisfaction. My meticulous approach to implementing best practices for code quality and performance optimization would be instrumental in stabilizing your app's existing infrastructure while transforming it into a fully independent system. Furthermore, my proficiency in Android development is matched only by my passion for staying ahead of industry trends. My familiarity with Flutter also enables me to provide any necessary support in the development process. Best Regards, Timothy B.

@santoshkumars17

With over 5 years of professional experience in Full Stack Web and Mobile App Development, I believe I have the right expertise and skills for your ongoing project. Specifically, my knowledge and understanding of Android Development combined with stronger system-level understanding and advanced mechanisms make me an ideal candidate for the role. I've worked extensively on similar projects like yours - stabilizing existing infrastructures while developing and improving platforms to meet changing market needs and demands. Furthermore, my knowledge of JNI/NDK, integration with native libraries is a great asset to help transform your app into a fully independent system. Aside from that, the prospect of taking on a lead developer role and becoming your partner aligns perfectly with my career aspirations. Just like you, I believe in the potentia