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THIS IS PART TIME / HOURLY AS NEEDED WORK - if not interested in hourly as needed work over a long period of time, please do not bid. ---------------- My Kotlin-based Android app, backed by Node.js functions on Firebase, is already 75 % complete. The next milestone is all about cleaning up bugs and defects—most of them visible as UI glitches. Once the interface is stable we will move straight into performance tuning, focusing on app loading time, memory usage, and stripping out any deprecated code that crept in during rapid prototyping. You will work part-time on an hourly basis (as needed, not continuous work). I’ll keep the project open and raise new milestones as needs arise, so expect an ongoing collaboration that may later include integrating a payment processor and broader UI enhancements. Current sprint objectives • squash the reported UI glitches so every screen renders consistently • shave seconds off the initial launch time and bring memory consumption down to an acceptable level • replace or refactor deprecated code/APIs • refactor node.js to a scalable solution (currently on a personal server) The codebase lives in a private Git repo; I merge through pull requests after review. Android Studio, Kotlin Coroutines/Flows, Firebase Firestore, and standard Material 3 components are the daily tools here, so please be comfortable with them. If this sounds like the kind of iterative, quality-driven work you enjoy, let me know your availability and I’ll share the backlog of open issues so we can start clearing them together.
Project ID: 40362301
87 proposals
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Active 1 mo ago
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87 freelancers are bidding on average $14 USD/hour for this job

➰➰ EXPERIENCED ANDROID (KOTLIN) DEVELOPER SINCE 8+ YEARS Hi there, ✋Based on your requirements, I’d love to help you stabilize and optimize your Kotlin-based Android app. I have strong experience in debugging production-level apps, fixing UI inconsistencies, and improving performance for Firebase + Node.js backed architectures. ⭕ Can you share the list of UI glitches or crash logs from Firebase Crashlytics? ⭕ Is backend refactoring expected to include API restructuring or just optimization? ⭕ Do you have any current performance benchmarks (load time / memory limits) you want to hit? ⚡I’m comfortable working on an hourly, milestone-driven basis and can align with your PR review workflow seamlessly. ➰Let’s connect and start clearing the backlog step by step to stabilize your app. Thank you.
$12 USD in 40 days
10.0
10.0

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 Mobile App Development, Android, Node.js, UI / User Interface, Kotlin, Payment Gateway Integration, Google Firebase, Android App Development, Performance Tuning 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.
$20 USD in 5 days
7.8
7.8

Hi. As an Android, I am very interested in your project. I am very familiar with Android Studio(Kotlin), Firebase and Node.js. I have mobile and backend skills with 8+ years. I wish to work for you. Thanks for attention.
$15 USD in 40 days
7.3
7.3

Hi, To address the UI glitches and improve performance, I'll focus on fixing the reported issues and optimizing the app's loading time. This will include: - Squashing UI glitches for consistent screen rendering. - Enhancing initial launch time and reducing memory usage. - Refactoring deprecated code and APIs. - Upgrading Node.js for a scalable solution. I will work part-time as needed, utilizing Android Studio, Kotlin Coroutines/Flows, and Firebase Firestore to ensure quality results. Ready to start once you provide access to the Git repo and the backlog of open issues. Thanks!
$12 USD in 40 days
7.1
7.1

Hi, I understand your Android app is already well underway and you now need a reliable developer to improve quality through targeted bug fixing, UI stabilization, performance tuning, and cleanup of deprecated code. Since the project is ongoing and hourly, the focus should be on making steady improvements without disrupting the existing architecture or release flow. My approach would be to work through the reported issues systematically, starting with UI glitches and screen consistency, then profiling launch time, memory use, and inefficient rendering paths. I would also review deprecated Android and Firebase related code, refactor where needed, and help move the current Node.js backend toward a more scalable deployment model that fits future growth. I am comfortable working through pull requests, collaborating iteratively, and keeping changes clean and reviewable. Before delivery, I will test affected screens across devices, validate regressions after each fix, profile startup and memory behavior, and confirm refactored code remains stable and maintainable. Best, Justin
$40 USD in 40 days
6.2
6.2

Hello, I am excited about the opportunity to collaborate with you on your Kotlin-based Android app project, supported by Node.js functions on Firebase. I understand the importance of cleaning up bugs and defects in order to enhance the app's performance and stability. I am ready to work part-time on an hourly basis to achieve our sprint objectives and ensure a successful project outcome. Looking forward to discussing further details and working together on this project. Regards, Yogesh Kumar
$13 USD in 37 days
5.8
5.8

Hello, I’m interested in this part-time, ongoing Android work and can help stabilize and improve your app. I have strong experience in Kotlin, Firebase, Node.js backends, UI/UX fixes, and performance optimization. I regularly work with Coroutines/Flows, Material 3, REST APIs, and PR-based workflows. I have solid experience with Firebase integrations and mobile app development, allowing me to fix issues efficiently and improve overall app performance. I can manage tasks at a fair rate and work iteratively on your backlog. Available to start immediately, share the details and I’ll get to work..
$10 USD in 40 days
5.6
5.6

Hi, I see your app is already 75% complete and this phase is focused on UI bug fixing, performance tuning, and refactoring deprecated Kotlin/Firebase code—I’ve worked on similar cleanup sprints where I stabilized Material 3 UI, optimized app launch time/memory, and improved Node.js/Firebase scalability. I’m comfortable with Kotlin Coroutines/Flows, Android Studio, Firestore, and PR-based workflows, and I can jump in part-time to systematically clear your backlog. I can also help refactor your Node.js backend from a personal server to a scalable Firebase/Cloud setup when needed. My availability is flexible for ongoing hourly collaboration—ready to start as soon as you share repo access. Looking forward for your positive response in the chatbox. Best Regards, Arbaz N
$12 USD in 40 days
5.2
5.2

Hello We can work on stabilizing your Kotlin Android app by fixing UI glitches, improving launch performance, optimizing memory usage, and refactoring deprecated code. We are comfortable with Android Studio, Kotlin Coroutines/Flows, Firebase Firestore, and collaborating through Git pull requests in an iterative development process. Available for part time hourly work and long term collaboration as required. Can discuss more now?
$12 USD in 40 days
5.0
5.0

Hello, this kind of long-term, as-needed work actually fits me well. I’ve worked a lot with Kotlin Android apps using Coroutines/Flows + Firebase (Firestore + Cloud Functions), and I’m very used to jumping into partially completed codebases to stabilize UI, clean up tech debt, and improve performance without breaking existing flows. UI glitches and inconsistent rendering are usually a mix of state handling + lifecycle issues — I can go through screens systematically and fix those while keeping everything aligned with Material 3. On the performance side, I’ll profile cold start time, trim unnecessary initializations, and reduce memory usage (especially around ViewModels, listeners, and Firestore usage). For the backend, I can help refactor the Node.js functions into something more scalable (Firebase Functions best practices or even a cleaner service structure if you’re planning to grow). Also comfortable cleaning up deprecated APIs and making the codebase more maintainable going forward. I’m fine working via PRs, async updates, and picking up tasks from a backlog over time. Availability-wise, I can jump in a few hours per week to start and scale up if needed. Happy to take a look at the repo and current issues whenever you’re ready
$12 USD in 40 days
5.1
5.1

Hey, I am ready when you are.✅ I’ve worked on something very similar. Fixing bugs and optimizing Android apps can be tricky, especially when it comes to UI glitches and performance issues. In a recent project, I successfully tackled similar challenges by optimizing app loading times and memory usage, as well as refactoring deprecated code. While I haven't worked on this exact setup, I have experience with Kotlin, Firebase, and Node.js, which are key components of your project. I would approach this by first addressing the reported UI glitches, optimizing loading times, and refactoring any deprecated code. Let's chat! -Oleksandr
$15 USD in 40 days
4.9
4.9

Hi, this kind of ongoing cleanup and optimisation work is exactly what I enjoy—your Kotlin app with Firebase and Node.js is already in a solid place, and I can jump in to squash UI glitches, stabilise rendering with Material 3, and improve startup time and memory usage. I’ve worked with Kotlin Coroutines/Flows and can also refactor deprecated APIs and move your Node.js backend to a more scalable setup. I’m comfortable with part-time, hourly collaboration via PRs and can stay available long-term as new milestones come in. Happy to review your backlog and start clearing issues right away. Looking forward for your positive response in the chatbox. Best Regards, Hassan T
$12 USD in 40 days
4.9
4.9

Hello, I appreciate the opportunity to collaborate on your Kotlin-based Android app. It sounds like you have a solid foundation, and I'm excited to help you enhance its stability and performance. With extensive experience in Android development, particularly using Kotlin and Firebase, I have a strong background in debugging UI issues and optimizing app performance. I am well-versed in Android Studio, Kotlin Coroutines, and Material 3 components, making me a good fit for your project. To address your current sprint objectives, my approach would include: - Systematically identifying and fixing UI glitches to ensure consistent rendering across all screens. - Conducting performance profiling to reduce app launch time and optimize memory usage. - Refactoring deprecated code and APIs to improve maintainability. - Enhancing the Node.js backend for better scalability on a suitable server. I am eager to support your ongoing development needs and collaborate closely with you to achieve your project goals. I can start right away and am flexible with my hours. Let's discuss how we can tackle the backlog of issues together. Thank you for considering my proposal!
$12.01 USD in 40 days
4.6
4.6

How do you do? Your project is a strong match for me because it is already built to a meaningful stage, and the current need is exactly where careful engineering matters most: bug fixing, UI consistency, performance tuning, cleanup of deprecated code, and improving backend reliability without disrupting what already works. I am comfortable with Kotlin Android development, Android Studio, Coroutines/Flows, Firebase/Firestore, Node.js backends, and PR-based collaboration in private repos. I also understand the value of long-term hourly work where issues are handled steadily and responsibly instead of forcing a rushed rebuild. How I would contribute: * fix UI glitches screen by screen with clear root-cause analysis * improve launch time and memory usage with profiling and targeted optimization * remove or refactor deprecated APIs safely * help move the current Node.js functions from a personal server toward a more scalable and maintainable setup * keep changes clean, review-friendly, and easy to merge through pull requests I work well in iterative environments where quality, stability, and ongoing support matter. I am open to part-time, hourly, as-needed collaboration over the long term, and I am comfortable adapting as the project grows into payments and broader UI improvements later. I would be glad to review your issue backlog, prioritize quick wins first, and then move into deeper performance and architecture improvements in a structured way. Sihalath S
$12 USD in 40 days
4.1
4.1

Hi, This is exactly the kind of iterative, quality-focused work I enjoy—especially stepping into a 75% complete product and bringing it to a stable, production-ready state. From your description, I see four immediate priorities: • Fix UI inconsistencies across screens (likely layout constraints, state handling, and rendering issues) • Improve cold start time and reduce memory footprint • Clean up deprecated APIs and stabilize the Kotlin/Firebase layer • Refactor Node.js backend into a more scalable, maintainable setup I’m very comfortable working with: • Kotlin (Coroutines, Flow, modern Android architecture) • Firebase (Firestore + Functions) • Git-based PR workflows with clean, reviewable commits Availability: Available for long-term, part-time (hourly/as-needed) collaboration and comfortable working in milestone-based iterations as you described. If you share the backlog/issue list, I can start by prioritizing quick wins (UI + visible bugs) and move into performance tuning right after. Let’s get your app stable and fast. Best regards, Kunal K.
$12 USD in 40 days
3.8
3.8

Hello, I have extensive experience in the mentioned technologies and am ready to start immediately. Let’s connect via chat to discuss the project requirements further. Thank you, Jignesh
$14 USD in 40 days
3.8
3.8

★•══•★ Hi client ★•══•★ Thanks for posting about my specialist job area. I’ve worked on similar projects where applications were already partially built and required stabilization, UI refinement, and performance optimization before scaling. For example, I improved a React Native + Firebase app by fixing cross-device UI inconsistencies, optimizing API calls to reduce load times, and restructuring state management for better performance. I also upgraded legacy backend services by refactoring Node.js APIs into clean, modular architectures, improving scalability, and ensuring smoother deployment pipelines. For your project, I’ll focus first on resolving UI glitches to ensure consistent rendering across screens, then optimize app startup time and memory usage using profiling tools. I’ll refactor deprecated code safely and improve your Node.js backend for scalability. I’m comfortable working via Git PRs and collaborating iteratively as new tasks come in. Estimated availability: flexible, long-term. Hourly rate: $10/hr. Given the opportunities to apply my passion and expertise to your project, I am sure I will complete it perfectly on time and maintain high code quality. Let me know once you ready to start this.
$10 USD in 40 days
3.2
3.2

Hi, hope you are well. I’ve carefully reviewed your requirements, and this is essentially the same type of project I completed two months ago. I am an experienced and specialized freelancer with 6+ years of practical experience in Google Firebase, Node.js, Android, Kotlin, Mobile App Development and I’m able to complete and deliver this project promptly. Please visit my profile to check the latest work and honest client reviews. Let us make this great together, please connect in chat. Regards.
$10 USD in 40 days
3.0
3.0

I can help with this, I will work through your Kotlin UI glitch backlog, profile memory and launch time, replace deprecated APIs, and move the Node.js layer from your personal server onto Firebase Cloud Functions. For the launch-time target, Baseline Profiles (AGP 7.1+) typically cut cold start by 30 to 40 percent on Material 3 apps. I will pair that with LeakCanary and the Android Studio Profiler for the memory side rather than guessing. Questions: 1) Compose or classic XML views on the affected screens? 2) How many open tickets in the backlog to start? Looking forward to potentially working together. Best regards, Faizan
$12 USD in 40 days
2.9
2.9

Dear Sir, I am thrilled to bid your project. Your setup is a strong fit for the kind of long-term, hourly collaboration I enjoy, especially when the focus is steady quality improvement rather than rushed one-off delivery. I am comfortable working inside Kotlin Android codebases with Coroutines, Flows, Firebase, Firestore, Material 3, and PR-based workflows, and I can help clean up UI glitches, improve startup performance, reduce memory usage, replace deprecated APIs, and support the Node.js backend transition to a more scalable setup. I also understand the value of part-time, as-needed work where issues are handled in focused sprints and the codebase is improved carefully over time. My focus would be clear debugging, maintainable fixes, and practical optimization rather than temporary patches. One important question: for the Node.js side, are you aiming to move from the personal server to Firebase Functions, Cloud Run, or another managed backend path? That decision will affect the cleanest scalability plan from the start. Sincerely, Adison.
$12 USD in 40 days
2.9
2.9

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