Urgent Multiplatform Mobile Developer Wanted - USA TIME WORK HOURS (NY Time Zone)

@Microlent

I'm a real human Hello! I can step in immediately to stabilize your Flutter and React Native codebases, ship the urgent fixes, and transition smoothly into ongoing sprint collaboration. Proposed Architecture: Core Engine • Clean feature-based structure in both Flutter (Dart) and React Native (TypeScript) • Shared API abstraction layer for REST/GraphQL integrations • Platform-specific optimization where required (native modules if needed) • Strict linting and unit testing setup to maintain cross-platform stability Flow • Immediate bug triage and reproduction across iOS and Android • Patch release for urgent fixes • Development of the new module with full cross-platform validation • GitHub PR workflow with code reviews and CI checks Performance Strategy • Profiling using Flutter DevTools and React Native performance monitors • Memory and render optimization for both platforms • Clean state management patterns to avoid regressions • Test coverage for new features and critical flows Availability • US time zone aligned • Weekend availability confirmed • Ready to start immediately Xcode & Publishing • Full Xcode experience • MacBook environment ready • Comfortable building, archiving, and publishing to TestFlight and App Store Connect I can share live store links for both a production Flutter app and a production React Native app during our technical chat. Let’s define your benchmark set and preferred hosting environment so we can move quickly. Best regards, Jasmin

@tangramua

Dear ,   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 JavaScript, Mobile App Development, iPhone, Dart, PhoneGap, iOS Development, React Native, Flutter 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.     

@AhteshamAK

Hello, I'm a real human. I'm ready to jump in and support your urgent multiplatform mobile needs. With hands-on experience delivering production apps in both Flutter and React Native, I can quickly squash bugs, build the new module, and ensure everything compiles and performs smoothly on both iOS and Android from the first build. I work comfortably in US/NY time zone hours and can be available on weekends. I’m well-versed in REST and GraphQL integrations, unit testing, and collaborative GitHub workflows. I also have full Xcode experience and a MacBook, so publishing to TestFlight is no issue. I enjoy fast-paced, ongoing collaborations, and your blend of immediate priorities plus long-term sprints aligns perfectly with how I like to work. I can start right away and maintain consistent momentum. Looking forward to teaming up, Ahtesham

@rohan3188

Hello, I've reviewed your requirements and have worked on similar projects before. With my experience and skills, I can complete your project to your satisfaction. Please contact me via chat to discuss the details. Thank you.

@kamransiyal9

HI! I am an expert web and app programmer. I have a lot of work experience in Laravel, Codeigniter, PHP, Wordpress, JavaScript, HTML, Vuejs, Reactjs, React Native, Flutter, and MySQL. I can start right away. I want to discuss this project in detail. Please contact me to discuss more regarding this project. For more details Chat with me

@Hammadhassan21

Hello hope you are well I'm a real human i will help you build and stabilize your cross platform mobile products with clean compiling Flutter and React Native code that runs smoothly on both iOS and Android from the very first build while handling urgent bug fixes and delivering the new module ASAP within US time zone and weekend availability. I have hands on experience shipping production Flutter and React Native apps live on the stores including TestFlight distributions, working with REST and GraphQL API integrations, unit testing, GitHub code reviews, and structured sprint cycles for long term collaboration. I am comfortable aligning on architecture decisions, improving performance, and ensuring every feature is production ready not just functional. I also have Xcode experience and access to a MacBook, so I can build, archive, and publish TestFlight releases without delays. Let’s connect for a quick technical chat so I can show you relevant live apps and outline exactly how we can hit your urgent milestone fast and continue scaling together. PS: I can start immediately and deliver this project as quickly as possible, ensuring your complete satisfaction and unlimited modifications Discover my professional portfolio: https://www.freelancer.com/u/Hammadhassan21 If you find my offer satisfactory, we will be happy to discuss your project in detail. Best Regards Hammad Hassan

@mobiappsoftware

Hello, I AM READY TO JOIN YOUR TEAM AS FLUTTER DEVELOPER ON US TIME. I will develop your MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks

@hireageek

Hi there, I understand the urgency of your need for a multiplatform mobile developer who is adept in both Flutter and React Native. As a top freelancer from California, I’ve delivered numerous successful projects, earning five-star reviews from satisfied clients. I’m experienced in tackling bug fixes swiftly while ensuring new features are implemented flawlessly, and I thrive in collaborative environments like the one you've described. I’m comfortable working on both iOS and Android, and I have experience with Xcode, allowing me to publish test flights seamlessly. I can provide live links to both a Flutter and React Native app that I developed, meeting your requirement for real examples. Let's chat about how I can help you clear this initial milestone and contribute to your ongoing development needs. Can you share more details about your existing codebase and the specific bugs you'd like prioritized? Thanks,

@arbu1499

I'm a real human Hi there, I’m ready to jump in and help with your Flutter and React Native apps, addressing urgent bug fixes and shipping your new module immediately. I have experience building production apps in both frameworks that run smoothly on iOS and Android, integrating REST/GraphQL APIs, writing unit tests, and managing code reviews on GitHub. I also have full Xcode experience with a MacBook for TestFlight builds and App Store publishing. I’m available in your US time zone, including weekends, for both the immediate milestone and ongoing sprints. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T

@rbtech1984

I'm a real human Hi There!!! ★★★★ (Urgent Multiplatform Mobile Developer - USA Time) ★★★★ I understand you need an experienced Flutter and React Native developer available in the US time zone with weekend availability. The role involves urgent bug fixes, a small new module, and then ongoing feature development, API integration, unit testing, and code reviews. XCODE experience and a Mac for TestFlight publishing are required. Services 24*7 available for discussion(reply in a few hours) Ui & UX design with unlimited revisions Deployment Support Source code will be provided at the end of the project 90-days support for bug fixing With 9+ years experience in Flutter, React Native, Dart, and TypeScript, I’ve delivered multiple production apps on iOS and Android. I have XCODE experience and a Mac for TestFlight publishing. I’ll quickly tackle urgent tasks, ensure smooth multi-platform performance, and maintain high-quality code with CI/CD and testing best-practices. Excited to jump in and start collaborating immediately. Best Regards, Farhin B.

@rajubhalani

Lucijana, for this urgent multiplatform mobile development project, would it be fine if I review your existing Flutter and React Native apps to ensure they compile cleanly and perform smoothly on both iOS and Android platforms? So I believe by aligning our architecture and workflow, we can efficiently tackle bug fixes and new module development to meet your immediate needs while setting the stage for a fruitful ongoing collaboration. By the way, do you have a preferred timeline in mind for the completion of the initial bug fixes and new module development? This information would help me tailor my approach to ensure we meet your urgent requirements effectively. By the way, based on your emphasis on XCODE experience and the need for a MacBook for TestFlight publishing, do you have specific preferences or requirements regarding the tools and technologies to be used throughout the project? Understanding your expectations in this regard would enable me to better prepare for our potential collaboration.

@johnallenvillan1

Hi there, I'm an experienced mobile developer proficient in Flutter (Dart) and React Native (JavaScript/TypeScript). I have a track record of delivering clean and smooth-running features for iOS and Android platforms. I'm ready to tackle urgent bug fixes and new modules, paving the way for ongoing collaboration. Let's align on architecture, workflow, and timelines to ensure a seamless transition into your sprint cycle. Looking forward to showcasing my expertise and contributing to your projects.

@ivaylo8

Hello, I’m excited about the opportunity to collaborate with your expanding mobile team. With extensive experience in both Flutter and React Native, I am well-prepared to tackle the urgent bugs and develop new modules you require. My background includes multiple successful projects where I ensured seamless functionality across both iOS and Android from the first build. I thrive in dynamic environments and am available during US time zones, including weekends. I have delivered a production Flutter app and a production React Native app, both available in the app stores. These projects demonstrate my ability to integrate REST and GraphQL APIs effectively while maintaining a high standard of code quality through unit tests and code reviews on GitHub. I also have XCODE experience and work on a MacBook, allowing me to publish TestFlight versions seamlessly. I look forward to discussing how I can contribute to your team's success. Best regards, Ivaylo

@brayanstiven5

Hi, there, I am an experienced mobile developer proficient in Flutter (Dart) and React Native (JavaScript/TypeScript), with a strong background in developing cross-platform mobile applications for both iOS and Android. I have the required skills in Flutter, React Native, Dart, and JavaScript to deliver high-quality results efficiently. ✅ Leveraging my expertise in mobile development, I will tackle the urgent bug fixes and develop the new module to ship ASAP. Following that, I will seamlessly transition into our regular sprint cycle, working on building new screens, integrating APIs, writing unit tests, and actively participating in code reviews on GitHub. ✅ For the ongoing collaboration, I will ensure that every feature compiles cleanly and performs smoothly on both platforms from the first build, enhancing the overall user experience. ✅ Utilizing my experience, I will showcase a production Flutter app and a production React Native app that are live in the stores, demonstrating my ability to deliver robust and user-friendly mobile solutions. ✅ I am ready to engage in a brief technical chat to align on architecture, workflow, and timelines, ensuring a seamless collaboration to achieve our project goals. ✅ If needed, I have Xcode experience and a MacBook to publish TestFlights efficiently. I look forward to working with you. Best Regards. Brayan

@inventivedesigne

I’m a real human Before starting , do you want immediate bug fixes prioritized over new feature development, or a mix from day one? I’ve built production Flutter and React Native apps live on iOS and Android, integrating REST/GraphQL APIs, handling unit tests, and performing smooth cross-platform deployment. I work directly with Xcode on Mac for TestFlight builds and can manage app publishing workflows end-to-end. To prevent rework, I follow modular architecture, clean code practices, and thorough QA per sprint. You’ll receive a phased workflow: urgent bug fixes → new module → sprint cycle → code reviews → delivery.

@Fazeennazar

I'm a real human Hello I have checked your requirements carefully . Your project description is very interesting for me and I do have skills & experience that are required to complete it to a high standard. I will provide my best effort to complete your project perfectly and build a long-term relationship with you. My time zone is very flexible for you and I will provide 100% Satisfaction / 24-7 Support. I am ready to work for you from now and can provide you perfect result to your requirements. I hope I would be the right candidate for this project.. I am awaiting an affirmative response from you. Please message me for further discussion. Thanks for your reading my proposal. Regard.

@kishanbwts

I'm a real human I’ve handled urgent bug fixes and feature rollouts in both Flutter and React Native apps that had to work smoothly on iOS and Android from day one. For example, I helped a client in healthcare release a critical update under tight deadlines, ensuring both platforms passed QA without glitches. I have a MacBook with Xcode experience and can manage publishing builds via TestFlight quickly. Are your current builds automated through CI/CD pipelines, or is manual deployment preferred? Also, do your REST and GraphQL APIs have consistent versioning to avoid integration issues during new screen builds? I’m comfortable working US Eastern hours and can cover weekends immediately. Ready to jump in now and help clear that urgent backlog so we can switch to steady sprint development without delay.

@khurshid040462

Hi there, I am excited to apply for the mobile developer position you have posted. With a solid background in both Flutter and React Native, I am confident in my ability to address the urgent bug squashes and develop the new module you need. My experience with cross-platform mobile applications means I ensure that features are optimized for both iOS and Android right from the first build. I have successfully delivered production-level applications on both platforms, including a Flutter app available on the app store and a React Native app accessible through TestFlight. You can view my work here: • Flutter App: [Link to production app] • React Native App: [Link to production app] Additionally, I have Xcode experience and access to a MacBook, ensuring seamless publishing of TestFlight builds. I am ready to dive into this urgent task and look forward to a long-term collaboration. Best regards,

@maryam951

Hello Lucijana P., I am Maryam Abbas, a seasoned developer with 4 years of experience in Flutter and JavaScript. I have carefully reviewed the requirements for the urgent multiplatform mobile developer project and am confident in my ability to deliver exceptional results. I have a proven track record of successfully completing projects, receiving positive feedback, and maintaining a high level of client satisfaction. I have extensive experience working with various technologies and have a strong portfolio showcasing my skills. You can view my portfolio here: https://www.freelancer.pk/u/maryam951 I am eager to discuss your project further and explore how we can work together to achieve your goals. Let's connect and discuss the details. Best regards, Maryam Abbas