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

@Microlent

Hello! I can jump in immediately to stabilize your Flutter and React Native apps and ship the urgent fixes within your US-timezone schedule (weekend availability included). Experience & Stack • 8+ years cross-platform mobile (Flutter + React Native) • Strong REST/GraphQL integration (Apollo, Dio, Axios) • Clean architecture (MVVM / feature-based modular structure) • Unit & widget testing (Jest, React Native Testing Library, Flutter test) • CI/CD via GitHub Actions + Fastlane Production Experience I’ve shipped both Flutter and React Native apps to the App Store and Google Play, including finance and booking apps with real-time APIs and push notifications. Live store links and TestFlight access can be shared privately. Workflow • Immediate bug triage + performance profiling • Clean PR-based workflow on GitHub • Strict linting + test coverage • Consistent cross-platform parity checks • Clear sprint-based delivery iOS Publishing • Xcode experience: Yes • MacBook available: Yes • TestFlight + App Store submission handled end-to-end For the urgent milestone, I can start same day and deliver within days depending on scope. Let’s align on the current blockers and architecture so we can move fast. Best regards, Jasmin

@diektech

Hi, This is Elias from Miami. I’ve reviewed your role and understand you need someone who can work confidently in both Flutter (Dart) and React Native (TS/JS), shipping cross-platform features that compile cleanly on iOS + Android immediately. The first assignment is urgent (bug fixes + a small module ASAP), then it rolls into ongoing sprint work (REST/GraphQL integrations, unit tests, GitHub code reviews). You also require US time zone availability plus weekend coverage, and you want confirmation on Xcode/TestFlight capability (MacBook). I can support the workflow from day one: triage → reproduce → fix with tests → PRs ready for review, plus disciplined release hygiene so the same change behaves correctly across both platforms. -Q1 What’s the current priority list for the urgent milestone (top 3 bugs + the module scope), and do you have crash logs (Crashlytics/Sentry) to speed triage? -Q2 What’s your CI setup (Fastlane, EAS, Bitrise, GitHub Actions), and are there existing build/signing issues we should stabilize first? -Q3 Are the RN apps using bare workflow or Expo, and what Flutter state mgmt pattern is in use (Bloc/Provider/Riverpod)? Xcode/TestFlight: I can work with Xcode and iOS signing/build pipelines. If you need the developer to personally publish to TestFlight, that requires access to your Apple Developer account + signing assets. Live app examples: I can share store/TestFlight links privately during shortlist chat (I won’t invent links here). Regards.

@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.     

@asifalimzd

Hello, I’m an experienced mobile developer equally comfortable in Flutter (Dart) and React Native (JavaScript/TypeScript), with live production apps deployed on both iOS and Android. I can jump in immediately to handle urgent bug fixes and deliver the new module, ensuring clean builds and smooth performance across platforms. Highlights: - Production experience in both Flutter and React Native (links to live apps can be shared). - Strong background integrating REST/GraphQL APIs, writing unit tests, and collaborating via GitHub code reviews. - Full familiarity with Xcode and publishing to TestFlight, with a MacBook available for iOS builds. - Comfortable working in US time zone with weekend availability for urgent milestones. Next Steps: I’d be glad to share links to my production Flutter and React Native apps for quick review, then join a brief technical chat to align on architecture, workflow, and timelines. I’m ready to dive in right away and continue as part of your sprint cycle for the long haul. Thanks and regards, Asif Ali Zaman

@sunainawbst

✅Multiplatform| React Native | Firebase |Mobile App Development Expert Hi, Hope you are doing good. I have read your requirements carefully and can give you 100% assistance as a React Native Developer for building or enhancing your mobile application. I specialize in creating fast, stable, and scalable apps for both iOS & Android, backed by a secure and efficient Firebase architecture. Due to NDAs, links aren’t public—but once you open the chat, I’ll share live demos and walkthroughs. I’d love the opportunity to discuss your idea further and collaborate on developing a modern, intuitive, and impactful app. (Note: Please consider the current budget as flexible — we can finalize it after discussing the complete scope.) Thanks & Regards, Kajal

@AhteshamAK

I'm a real human. Hello! I'm Ahtesham, and I bring strong experience delivering high‑quality Flutter and React Native apps that run smoothly on both iOS and Android from the very first build. Your need for a developer who can work US (NY/EST) hours with weekend availability aligns perfectly with my schedule. I’ve shipped production apps in both Flutter and React Native, handled urgent bug fixes, built new modules under tight timelines, integrated REST/GraphQL APIs, and collaborated through GitHub with test coverage and code reviews. I also work extensively with Xcode and publish to TestFlight using my own MacBook, ensuring fast and clean iOS builds. I’m ready to jump into your immediate milestone and continue into long‑term sprint cycles. Best regards, Ahtesham

@techplusintl

Hi there, I'm a real human and I understand that you're looking for an experienced developer skilled in both Flutter and React Native. I appreciate the urgency of your project and the need for a reliable partner who can ensure that every feature runs smoothly on both iOS and Android. I have a proven track record of delivering production-ready applications in both frameworks. I can quickly address the bug fixes and develop the new module you require, ensuring a seamless integration into your existing products. My approach includes thorough testing and adherence to best practices, which will facilitate a smooth transition into your regular sprint cycle. I have experience with Xcode and possess a MacBook, allowing me to publish TestFlight builds without any issues. I look forward to discussing your project further and showcasing my past work that meets your criteria. Please feel free to reach out for a quick chat. Best regards, Burhan Ahmad TechPlus

@divumanocha

As a highly experienced and versatile mobile developer with a strong track record in Flutter (Dart) and React Native (JavaScript/TypeScript) for over 12 years, I assure you that your project would be in the hands of an expert. Having been rated amongst the top developers in the world, I'm well-versed with compiling and optimizing apps for both Android and iOS, ensuring seamless performance from the first build. Not only do I possess immense knowledge and expertise spanning all phases of app development - from bug fixes to feature integration and code reviews - but my diligence has also been honed by working on live products similar to yours. I understand the importance of urgency, time management, and delivering quality work within deadlines. Moreover, I have profound knowledge in XCODE and have access to macOS for easier management of making publishing test flights possible. This will enable me to continue workweekends if required aligning with your job's requirement. My extensive skills don't just revolve around Flutter, React Native but also extend to Node.js, Python, Laravel; thus streamlining collective efforts while delving into Rest/GraphQL APIs or writing unit tests. All these reasons combined guarantee a swift alignment with your team's architecture, workflow, and timeline goals.I'm excited about the opportunity of contributing to this project and await your positive response! Thanks....

@efanntyo

Hi there, I’m excited to jump in and help accelerate your urgent multi-platform mobile needs with a strong focus on reliability, performance, and clean architecture. With solid hands-on experience in both Flutter (Dart) and React Native (JavaScript/TypeScript), I’ve delivered production apps across iOS and Android, where every feature ships cleanly and performs smoothly from the very first build. I’ve led bug-squash sprints, implemented modular screen architectures, integrated REST and GraphQL APIs, and authored comprehensive unit tests to maintain high-quality releases in fast-paced sprint cycles. What I bring to the table aligns with your US time zone requirement and weekend availability: I’m accustomed to collaborating in NY EST windows, coordinating with design and backend teammates on GitHub, and delivering incremental improvements that keep your product momentum going. My approach starts with triaging the urgent bugs, reproducing them in a controlled environment, and shipping a reliable fix within the first 24 hours, followed by a small, well-scoped module to extend functionality. I’ll maintain a robust test suite, perform code reviews, and ensure the merged code meets your team’s standards for performance and maintainability. Why I’m a strong fit: I’ve built production Flutter apps and production React Native apps that are live or in internal/test tracks, with attention to platform-specific nuances, Xcode proficiency for iOS builds, and a practical mindset forMac se

@hireageek

Hi there, I understand the urgency of expanding your mobile team to tackle immediate needs while setting the stage for ongoing collaboration. As a top California freelancer, I have extensive experience in both Flutter and React Native, delivering high-quality applications that perform flawlessly on iOS and Android. I have completed numerous projects that have been well-received, evidenced by my 5-star reviews on this platform. I am well-versed in bug squashing, integrating REST/GraphQL APIs, and conducting thorough code reviews on GitHub. My familiarity with XCODE and access to a MacBook enables me to efficiently handle test flights and ensure successful deployments. The combination of my technical skills and commitment to collaboration makes me a perfect fit for your team. Let's chat soon to align on your immediate milestones and timeline. Could you specify the expected timeline for the bug fixes and new module delivery?

@arbu1499

I’m a real human I’m comfortable shipping production apps in both Flutter and React Native, with hands-on experience ensuring clean iOS and Android builds from day one. I’ve handled urgent bug-fix sprints, API (REST/GraphQL) integrations, unit testing, and GitHub-based code reviews within active release cycles. I also have macOS + Xcode experience and can build/archive, manage certificates/provisioning, and publish to TestFlight without friction. US time zone and weekend availability work for me, and I’m ready to jump in immediately and continue long-term through your sprint cycles. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T

@MohammedSabih

Hi, jumping in immediately to stabilize live mobile products and then integrating into your long-term sprint cycle is exactly the type of engagement Talvon Technologies handles best. With 7+ years of experience in cross-platform development, we’ve shipped and maintained production apps in both Flutter (Dart) and React Native (TypeScript), ensuring parity across iOS and Android from the first build. We’re fully aligned with US time zones and weekend availability when urgent releases demand it. Our approach: ⭐ Rapid bug triage and stabilization for immediate release ⭐ Clean feature module development in Flutter & React Native ⭐ REST/GraphQL API integrations with structured error handling ⭐ Unit testing and GitHub-based PR workflow participation ⭐ Performance profiling across both platforms Technical readiness: ⭐ Xcode experience for iOS builds and debugging ⭐ Mac environment available for TestFlight publishing ⭐ Store deployment experience (App Store & Play Store) We’re ready to dive in immediately and transition smoothly into your sprint cadence—happy to share live production app links and align on architecture in a technical call.

@rajubhalani

For your core requirement of finding an experienced developer proficient in Flutter and React Native, would it be fine if I first review your urgent bug fixes and new module, then suggest a seamless approach to ensure clean compilation and smooth performance across iOS and Android platforms? So I believe that with my expertise in both Flutter and React Native, we can achieve a seamless integration of REST/GraphQL APIs, unit testing, and efficient code reviews on GitHub, aligning perfectly with your ongoing sprint cycle. By the way, could you provide more insight into the expected timelines for this initial assignment and the tools currently in use to streamline the collaboration process?

@kareemmaize

I’m a real human Hi there To ship urgent fixes across both Flutter and React Native without breaking production stability, the most critical part is disciplined cross-platform testing and clean state management. I’m comfortable working in Dart and TypeScript, ensuring features compile cleanly on iOS and Android from the first build. I also have Xcode experience and a MacBook, so TestFlight builds and App Store submissions are handled without friction. For urgent bug squashes, I’ll begin with reproducible issue isolation, verify platform-specific edge cases, and implement fixes with proper unit and integration tests to prevent regression. Once stabilized, I can roll directly into sprint cycles—API integrations (REST/GraphQL), modular UI builds, code reviews, and performance optimization. I’m aligned with NY EST hours and weekend availability when required. After reviewing your current repositories, I’ll provide a precise execution plan for the immediate milestone and outline ongoing sprint capacity. If speed, clean architecture, and long-term collaboration matter, I’m ready to jump in.

@ixorawebmob

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile app development, working specifically with Flutter and React Native. I focus on clean architecture, scalable code, and clear communication to ensure that every feature performs smoothly across both iOS and Android from the first build. For this urgent assignment, I am available to dive right in, tackling bug squashes and developing the new module while keeping your timelines in focus. I also have experience with Xcode, as I work on a MacBook, which enables me to publish TestFlight builds seamlessly. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. What specific features do you need to develop right away? Let’s discuss over chat! Regards, Arpit Jaiswal

@rbtech1984

Hello There!!! ★★★★ ( Urgent Multiplatform Mobile Developer - US EST Hours ) ★★★★ I understand you need a highly experienced Flutter and React Native developer to work in US (NY EST) hours, tackle urgent bug fixes, and implement a small module immediately, with long-term collaboration for new screens, API integration, testing, and GitHub code reviews. Weekend availability and Xcode/macOS setup are required for TestFlight builds. Services mentioned here based on project details ⚜ Immediate bug fixes and small module deployment ⚜ Flutter (Dart) development for iOS and Android ⚜ React Native (JavaScript/TypeScript) development for iOS and Android ⚜ Integration with REST/GraphQL APIs ⚜ Writing unit tests and participating in code reviews ⚜ TestFlight / App Store build and deployment support ⚜ Weekend availability for urgent releases With 9+ years building cross-platform mobile apps, I’ve shipped production Flutter and React Native apps, handled live bug fixes, and managed full TestFlight workflows. I can start immediately and stay aligned with your US team schedule. Warm Regards, Farhin B.

@softwarelinkerrs

As a real human, and an experienced multiplatform mobile developer, I believe I fit perfectly with your project. Throughout my career at SoftwareLinkers, I have been responsible for developing secure, scalable digital systems that are PHP and MySQL-based, and RESTful API integration with different platforms. My proficiency in Flutter (Dart) coupled with my React Native (JavaScript/TypeScript) skills make me a perfect match for this project as you require someone comfortable with both languages. My work transcends language barriers as my primary focus has always been on making sure the final product runs effectively on both iOS and Android platforms. My clients choose me not only because of my varied skill set but also because of the value I place on their businesses. It’s never about just writing a code for me, it's about realising your business goals and building solutions that are secure, scalable and future-ready; a philosophy that resonates well with your project. So, let's not just fix the bugs you have currently but take this as an opportunity to build something even more robust together.

@AnhTVc

I am a real human Hi, I’m ready to jump in and help with your urgent milestone and long-term roadmap. I have strong experience working with both Flutter (Dart) and React Native (TypeScript), building and maintaining production apps for iOS and Android with clean cross-platform performance. I’ve handled urgent bug fixes, feature rollouts, REST/GraphQL integrations, and CI/CD workflows including TestFlight and Play Store deployments. I do have Xcode experience and am comfortable handling iOS builds, certificates, provisioning profiles, and publishing to TestFlight. I also have access to a Mac environment for building and distributing iOS releases. I’m available in US time zones and open to weekend work for urgent releases. I’d be happy to share live app examples and discuss architecture and timelines in a quick technical chat.

@GameOfWords

I'm a real human Opening (Experience): I have 6+ years of experience developing cross-platform mobile apps using both Flutter (Dart) and React Native (JavaScript/TypeScript). I’ve successfully shipped production-ready apps for iOS and Android, handling everything from API integration and state management to UI/UX polish and store submissions. I am fully comfortable with Xcode, TestFlight, and publishing builds from a MacBook. Project Understanding & Execution Plan: I understand you need an experienced mobile developer to address urgent bug fixes, ship a small module immediately, and then join your ongoing sprint cycle. I will quickly triage and resolve existing issues, implement the new module with clean, maintainable code, and ensure all builds compile and perform smoothly on both platforms. Long-term, I will integrate REST/GraphQL APIs, develop new screens, write unit tests, and participate in code reviews via GitHub, all aligned with your US timezone and weekend availability. Are there any CI/CD pipelines currently in place for automating Flutter/React Native builds, or should I plan to manage builds locally for TestFlight and Play Store? Also, are there preferred state management solutions you want for new screens?