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I'm looking for a developer to help with the continuous development of several online card games. Our games have a WEB version and also mobile apps (iOS and Android), all of which share the same database and backend code. The development is organized into two servers - prod and dev. All the architecture is hosted on Google Firebase servers. Firebase RealTime Database un Firebase functions are used for the backend, React + Redux for the WEB frontend, and React Native + Redux for the mobile apps. I already have one senior developer for the web and backend, and another developer for the mobile apps. Currently, I am looking for an additional developer to help with implementing further features and bug fixes on both platforms - Web and native apps. What we're expecting from you: - strong skills and experience with NodeJS, Firebase, and ReactJS, as these are the main tools & languages used in our project for now - availability to work for at least 20 hours per week - good communication and English skills to coordinate with other devs and to understand the requirements - experience with developing native apps (iOS and Android), as you might also need to get involved in the development of mobile apps What we're offering: - a solid workload for at least 20 hours per week (or more) - work on interesting projects and ideas - clearly described tasks of features to implement and bugs to fix
Project ID: 39686093
167 proposals
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Active 9 mos ago
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167 freelancers are bidding on average $34 USD/hour for this job

Hello, I understand you're looking for a developer with strong skills in NodeJS, Firebase, ReactJS, and React Native to help with the ongoing development of your online card games. I have solid experience in these technologies and can effectively contribute to both the web and mobile apps, ensuring seamless integration with your existing architecture on Firebase. I'm ready to jump into implementing new features and resolving bugs, working closely with your current team to understand the requirements clearly. With my background in developing native apps for both iOS and Android, I can help enhance your projects while maintaining good communication with the existing developers. I'm excited about the opportunity to work on such interesting projects and am available for at least 20 hours per week as required. What specific features or bugs do you want me to prioritize initially for both the web and mobile applications? Thanks, Muhammad Awais
$25 USD in 33 days
9.2
9.2

I have over 10 years of experience in web and mobile development, specializing in Node.js, Firebase, React.js, and React Native – all key tools required for your card games project. I understand the need for continuous development, and I am here to help implement new features and fix any existing bugs on both the web and native apps. In the realm of gaming, I have successfully worked on similar projects, ensuring seamless integration of databases and backend code across different platforms. My expertise in Node.js and React.js has enabled me to deliver high-quality solutions in the past, and I am excited to bring that experience to your project. With my availability of at least 20 hours per week, strong communication skills, and experience in developing native apps for iOS and Android, I am well-equipped to meet your project requirements. I am eager to contribute to your project and bring your ideas to life. Let's discuss how we can work together to achieve your goals.
$40 USD in 15 days
8.4
8.4

Hi, Could you share more about the typical feature types or bugs that need attention most often? I have strong experience working with NodeJS, Firebase, ReactJS, and React Native, which matches well with your technology stack. I have worked on both web and mobile app development, including implementing new features and fixing bugs, and I am comfortable working with Firebase Realtime Database and functions. look forward to discussing how we can move forward. Best Regards, Yasir Khurshid LEADconcept FYI. Current bid amount is placeholder to submit the proposal.
$38 USD in 40 days
8.5
8.5

Hello, I have extensive experience with NodeJS, Firebase (RealTime Database & Functions), ReactJS, and React Native, making me well-prepared to contribute to both your web and mobile platforms. I can efficiently implement new features, resolve bugs, and ensure consistent performance across prod and dev environments. I’m available for 20+ hours weekly, communicate clearly in English, and thrive in collaborative environments with other developers. Having worked on cross-platform applications, I can seamlessly support both web and mobile development to keep your online card games evolving smoothly. Looking forward to connecting! Thank you, Niral D
$25 USD in 40 days
8.3
8.3

Hi, This is Elias from Miami. I’ve reviewed your project description and understand you’re looking for a developer skilled in NodeJS, Firebase (Realtime Database & Functions), React + Redux for web, and React Native + Redux for mobile, to help build features and fix bugs across your online card games ecosystem hosted on Google Firebase. I have 10+ years experience in full-stack JS development and have worked extensively with Firebase backend services and React-based frontends. I’m comfortable coordinating with teams and ramping up quickly on existing codebases. Mobile app dev with React Native is also a core strength of mine. A few questions to align expectations: Q1: Are the mobile and web apps sharing the exact same Redux store shape and logic, or are there platform-specific differences I should be aware of? Q2: What’s your preferred communication and project management setup (Slack, Jira, GitHub issues, etc.)? Q3: Will I be handling bug fixes and features on both platforms equally, or is the focus heavier on one side (web vs mobile)? Looking forward to collaborating with your team! Regards, Elias
$38 USD in 40 days
7.9
7.9

Hello Kaspars, I am Lei, with over 18 years of experience in iOS Development and Mobile App Development. I have carefully reviewed your project requirements and am confident in my ability to contribute effectively. With over 10 years of mobile development experience on iOS and Android platforms, including a specialized focus on Flutter in the last 3 years, I am well-equipped to handle the development of your online card games. Additionally, I bring 8 years of backend service development and database optimization experience to the table. You can view my portfolio here: https://www.freelancer.com/u/mikelilei82 I would love to discuss this project further with you. Please feel free to connect with me in the chat. Thanks, Lei
$38 USD in 40 days
7.7
7.7

Dear Kaspars Andris 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 Mobile App Development, Android, Node.js, AngularJS, React.js, Web Development, iOS Development, Backend Development, React Native, Google Firebase 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. P.S. As seen from the details of your profile, you located in Europe. Be informed that our technical offices located in Europe too i.e. you will be able to work with our developers almost in the same time zone.
$35 USD in 5 days
8.3
8.3

Hello! I have extensive experience in developing applications using NodeJS, Firebase, and React, which align perfectly with your project's needs. In the past, I worked on a similar project involving a multiplayer card game that required real-time updates and a seamless user experience across both web and mobile platforms, utilizing Firebase for the backend and React Native for mobile development. For your project, I propose a high-level technical plan that includes first assessing the current codebase to identify areas for improvement and feature implementation. I would focus on enhancing the user experience by integrating new features based on feedback, alongside fixing existing bugs. I am also well-versed in communication, ensuring smooth collaboration with your existing developers. I would love to discuss this project further and explore how I can contribute to your team! Best, Inderdeep
$38 USD in 40 days
7.6
7.6

Hi, its not a auto bid so i need a chance to discuss the proejct with your, wehter you assign it to some other )I’m used to jumping into ongoing products with a prod/dev split, shipping features while fixing nagging bugs, and keeping player sessions stable. I work clean PRs, clear commit messages, and keep communication tight so the other devs always know what’s moving. On the web side, I build React + Redux features that keep state predictable, handle reconnects, and avoid re‑renders that hurt FPS in animated UIs. I’m comfortable with sockets or Firebase listeners for real‑time rooms, match state, and spectate modes. I also add unit tests where it matters and small storybook entries for tricky components. On the backend, I write Node/TypeScript cloud functions that are small, testable, and cost‑aware. I’ve handled matchmaking, turn validation, anti‑cheat checks, and rate limits with Firebase Auth, RTDB/Firestore rules, and Cloud Tasks when needed. I keep logs readable and set alerts for the events you actually care about. For mobile, I work with React Native + Redux, handle iOS/Android builds, push notifications, app distribution, and OTA updates when the setup allows. I can give you at least 20 hours weekly, align with your workflow, and start by picking a couple of well‑scoped tickets so you can see how I fit with the team. If you share a small starter task, I’ll propose an approach and estimates before coding. Ahmed
$30 USD in 40 days
7.3
7.3

Drawing from my extensive experience, I believe I'm the perfect candidate for your project. Having built a plethora of mobile apps, I'm well-versed in Native languages for both iOS and Android - making me comfortable with the current technology stack you employ. Alongside that, my mastery over NodeJS, Firebase Real-Time Database and Firebase functions, highlights my proficiency with your server organization and back-end requirements. Furthermore, my prowess with React JS, Redux & React Native is invaluable when it comes to frontend and simultaneous multi-platform development. Beyond providing the needed technical skills, I want to emphasize my dedication to clear communication, a critical aspect considering we have a hierarchical development system in place. Good English skills and my ability to understand complex requirements will ensure smooth coordination with all team members including understanding your needs in real-time. Additionally, I take great pride in delivering scalable & responsive solutions. These games require continuous improvement, updates and bug-fixes while sharing a common database and backend codebase - something I can handle without any hitch. My availability of minimum 20h/week is well suited for your workload which will ensure consistent progress on your projects.
$38 USD in 40 days
7.5
7.5

Hi. As React and React Native expert, I am very interested in your project. I am very familiar with Firebase, React and React Native. I have web and mobile development skills with 8+ years. I wish to work for you. Thanks for attention.
$29 USD in 40 days
7.3
7.3

Hello, I can support the ongoing development of your online card games across both Web and mobile platforms. With strong experience in Node.js, Firebase (Realtime Database and Functions), React + Redux, and React Native + Redux, I can implement new features, resolve bugs, and maintain consistent functionality across all environments. I’m comfortable working in collaborative setups with prod/dev servers, version control workflows, and coordinated releases, and can ensure seamless integration between web and native codebases while keeping performance and stability a priority. Questions: – Will tasks be split evenly between web and mobile, or will one be the primary focus? – Do you use any specific project management or communication tools for coordination? I am a TOP Rated Freelancer, and you can check my reviews here as well: https://www.freelancer.com/u/kamran2012 Looking forward to potentially working together on this project. Thanks and Best regards, Kamran
$25 USD in 40 days
7.5
7.5

Hi there! Your project sounds like a lot of fun, and I’d love to be part of it. I’ve worked extensively with Node.js, Firebase, React/Redux, and React Native on both web and mobile apps, so I can jump right in to help with new features and bug fixes. I’m available for 20+ hours a week and happy to collaborate closely with your team. Looking forward to building something great together, Thanks, Truong.P
$35 USD in 40 days
6.6
6.6

Hi, I have strong expertise in Node.js, Firebase (Realtime Database & Cloud Functions), React, and React Native, making me well-equipped to contribute to both your web and mobile card game platforms. A key challenge in projects like this is maintaining consistent functionality across multiple platforms sharing the same backend — I address this through modular coding practices, robust testing across prod/dev environments, and efficient Redux state management. My experience includes integrating new features, optimizing Firebase queries for real-time performance, and resolving cross-platform bugs without disrupting live users. I can work closely with your existing senior developers to implement enhancements on both web and native apps, ensuring smooth coordination and clean version control. I’m also skilled at debugging complex data flows between shared backends and multiple frontends, which is critical for multiplayer card games. With strong communication skills and proven remote collaboration experience, I’m ready to help accelerate your development pipeline. Thanks, Hercules
$50 USD in 40 days
6.7
6.7

Hello, I’m Oleksiy, CEO of Mobiwolf — a Ukraine-based mobile & web development team with 14 years of experience building real-time, multi-platform applications. We’re excited about the opportunity to contribute to your ongoing card game projects and integrate smoothly with your existing team. Why We’re a Good Fit • Full Tech Match: Our developers are highly skilled in NodeJS, Firebase (Realtime DB, Functions), ReactJS, React Native, Redux, and cross-platform development for both iOS & Android. • Multi-Platform Experience: We’ve built apps that share the same backend across Web, iOS, and Android, ensuring seamless synchronization and minimal latency. • Collaborative Approach: We’ve successfully joined existing teams mid-project, adapting quickly to their coding standards, workflows, and deployment processes. • Real-Time App Expertise: Strong background in multiplayer gaming logic, low-latency event handling, and secure real-time data sync. What We Offer • Availability in 2 weeks for 40 hours per week. • Ability to work across both web and native app tasks (features & bug fixes). • Clear, proactive communication in English to ensure smooth collaboration. • Fast onboarding — we can adapt to your dev/prod server structure and Firebase environment quickly. We’d be happy to start with a short intro call, review your current architecture, and take on an initial feature or bug fix to demonstrate our fit. Best regards, Oleksiy Karaykoza CEO, Mobiwolf
$38 USD in 40 days
6.9
6.9

Hi Kaspars Andris G., I appreciate you considering me for your card games development project. With strong expertise in NodeJS, Firebase, and ReactJS, I can seamlessly integrate into your existing team and contribute to both web and mobile platforms. My experience includes working with Firebase RealTime Database, Firebase Functions, and implementing complex features in React + Redux applications. I'm also proficient in React Native development for iOS and Android, ensuring a smooth transition between web and mobile codebases. I'm available for 20+ hours per week and can start immediately. I look forward to the possibility of collaborating on your exciting projects. Best, Adil
$50 USD in 40 days
6.2
6.2

Hello Draxo, I once faced a tough issue with real-time data syncing in a React Native app, but I resolved it by optimizing Firebase functions. I have strong experience in NodeJS, Firebase, ReactJS, and React Native, making me a great fit for your project. I can easily handle feature development and bug fixes for both your web and mobile platforms. I’m available for at least 20 hours a week and have great communication skills to work closely with your current developers. I'm excited about the opportunity to contribute to your online card games!
$38 USD in 40 days
6.1
6.1

Hello, As an experienced full-stack developer with extensive knowledge in NodeJS, Firebase, and ReactJS, I can seamlessly integrate into your existing team and deliver impactful results for your online card games. Moreover, bringing on board someone with experience in developing native apps for iOS and Android will certainly facilitate my involvement in enhancing the capabilities of your mobile platforms. I am confident in my ability to meet and exceed your expectations as a developer who has been delivering top-notch solutions to clients similar to you throughout my career. In addition, my background in both front-end and back-end technologies allows me to effectively tackle challenges, implement new features efficiently, and fix any bugs that may arise. Beyond just the skills and experience listed, what sets me apart is my commitment to client satisfaction and strong communication abilities. I pledge not only to work for at least 20 hours per week but also to provide clarity in detailing tasks and actively coordinating with my colleagues. With me on board, you would be getting a capable team player willing to take on responsibility and contribute significantly to the growth of your project. With Regards! Abhi
$25 USD in 40 days
5.9
5.9

Hi, I have extensive experience in NodeJS, Firebase, ReactJS, and React Native, making me the perfect fit for your project. I can seamlessly integrate new features and address any bugs on both the web and native app platforms. With a strong background in backend and frontend development, I can collaborate effectively with your existing team to ensure smooth project delivery. Let's discuss your project requirements in detail to provide a tailored solution that aligns with your goals. Please start the chat so we can delve deeper into your project needs. Regards, Sai Bhaskar
$25 USD in 40 days
5.6
5.6

As an experienced Full Stack Developer, I have spent years honing my skills in NodeJS, Firebase, ReactJS and React Native which are all integral to the development of your online card games. I'm well-versed in organizing projects across digital platforms like iOS, Android as well as Web. Rest assured, my familiarity with Firebase RealTime Database and functions ensures a seamless integration within the existing architecture. Having previously undertaken similar work involving separate servers and shared databases, I appreciate the significance of clear communication and a collaborative approach. My English fluency along with good interpersonal capabilities renders me capable of effectively coordinating with your senior developer and other stakeholders. My experience extends to native app development for both iOS and Android, ensuring that you can rely on me not only for implementing new features but also debugging existing ones. By choosing me, you can expect dedication of at least 20 hours per week or more depending on your requirements. In return I assure a high standard of dedicated work and provision of 24/7 support throughout our journey together. My aim is always to create quality code that's easy to maintain, so that even with future feature additions or improvements, you can rely upon your product to remain robust. Let's get started on enhancing your compelling online card games!
$25 USD in 40 days
5.7
5.7

Valmiera, Latvia
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