Project Overview
We require a freelance mobile app developer to design and develop a mobile application for our IoT Flood Observatory System. The app will subscribe to live data from an EMQX MQTT broker, process the information through Node-RED on a VPS, and provide real-time alerts and notifications to users. The app should support push notifications (FCM) and alternative alerts via Telegram Bot API.
The primary target platform is Android (Google Play), but we welcome cost-effective suggestions for multi-platform development.
1. System Requirements
1.1 MQTT Subscription
The app will subscribe to data from an EMQX MQTT broker.
Data is live and formatted in JSON, carrying 10 parameters in each payload.
The developer must implement a real-time data listener for MQTT topics.
1.2 Backend
Node-RED will be used as the backend for processing and managing incoming data.
A VPS (shared server) will be provided for hosting the backend.
The developer will need to integrate the app with Node-RED APIs for historical data retrieval and processing.
1.3 Push Notifications
Firebase Cloud Messaging (FCM) should be implemented for real-time push notifications.
Notifications should trigger based on threshold conditions (e.g., water level exceeding a dangerous level).
Notifications should support custom sound and click-to-open app functionality.
1.4 Mobile App Development
Preferred development platform: Kodular (open to cost-effective alternatives).
The app should be designed for Android, with an option to scale to iOS in the future.
User Authentication: Basic authentication (e.g., username and password) or integration with Google Sign-In.
User Interface (UI) and User Experience (UX)
Dashboard showing live flood data with graphical representation (charts, gauges, color-coded alerts).
Map Integration (Google Maps) to display flood-prone areas.
Historical Data View to analyze past flood trends.
Custom Alert Settings for users to define personal warning levels.
Dark Mode and Accessibility Features.
1.5 Alternative Alert System
Telegram Bot API should be implemented for alternative alerts.
Users can subscribe/unsubscribe from Telegram alerts via the app.
1.6 User Capacity
The app should be designed to handle 100 to 1000 active users.
The backend (Node-RED) should be optimized to handle concurrent MQTT data requests.
2. Deliverables
Fully functional Android app uploaded to Google Play Store.
Access credentials for:
Node-RED backend.
Firebase Cloud Messaging (FCM) project.
Telegram Bot API settings.
App installation package (APK).
Source code and documentation for (Please quote with & without this):
App development (including API calls and configurations).
Node-RED backend integration.
MQTT topic subscriptions and payload handling.
3. Development Timeline
Project Start Date: ASAP
Beta Version: Within 3 weeks from project initiation.
Final Version: Within 4-5 weeks, including testing and debugging.
4. Budget & Quotation
The developer should provide:
Itemized cost breakdown (app development, integration, deployment).
Maintenance and support package options (if available).
Payment milestones : to be discussed
5. Additional Notes
The app should be lightweight, efficient, and optimized for low-latency data updates.
The UI should be simple, intuitive, and visually appealing.
The developer must ensure the app is secure and follows best practices in data handling.
Any third-party libraries used must be open-source or properly licensed.
How to Apply
Interested developers should provide:
Portfolio of similar projects (especially IoT-related apps).
Proposed development approach (tools, technologies).
Estimated cost and timeline.
HELLO, I HAVE WORKED ON SIMILAR PROJECTS AND CAN PROVIDE EXAMPLES.
I have read your requirements and can confidently handle this project. With over 8 years of experience in mobile app development and IoT integration, I specialize in building real-time data-driven applications. I can develop a lightweight and efficient Android app that seamlessly subscribes to MQTT data, processes alerts via Node-RED, and sends real-time push notifications using FCM and Telegram Bot API. The app will feature a modern UI with live data visualization, Google Maps integration, and custom alert settings, ensuring an intuitive and reliable user experience.
Working Flow:
MQTT Integration & Real-Time Data Processing – Implement MQTT subscriptions for live flood data.
Push Notifications & Telegram Alerts – Trigger alerts based on water level thresholds.
Dashboard & Map View – Provide graphical flood data representation and Google Maps integration.
User Authentication & Settings – Enable login, Google Sign-In, and customizable alert preferences.
Backend Optimization – Ensure Node-RED and VPS handle concurrent requests efficiently.
Looking forward to building a powerful and responsive flood observatory system!
Julian
Hello,
I’m excited about the opportunity to develop your IoT Flood Observatory mobile app. With expertise in real-time data processing and IoT integrations, I will design and build a user-friendly app that subscribes to live data from your EMQX MQTT broker, processes it via Node-RED on your VPS, and delivers instant alerts through FCM push notifications and the Telegram Bot API.
By hiring me, you are guaranteed:
100% delivery of work
High-quality, bug-free code
Daily progress updates with no communication delays
Post-development support to ensure your app runs smoothly, free of cost
I am eager to bring my expertise to your team and help you achieve your project goals.
Thank you
Hello, I HAVE DONE SIMILAR WORK AND I CAN SHOW YOU
WHAT I OFFER:
1. UNLIMITED CHANGES UNTIL YOU ARE SATISFIED
2. 1 YEAR FREE SUPPORT AND MAINTENANCE POST LAUNCH
3. FULL SOURCE CODE AFTER COMPLETION
I have carefully read your project requirements and I am confident that I can handle this task efficiently.
I have over 7 years of experience in mobile app development, IoT integrations, and real-time data processing, I have worked extensively with MQTT, Node-RED, Firebase Cloud Messaging, and API integrations.
My approach would be to develop a lightweight, high-performance Android app (with future scalability for iOS) using Flutter for cross-platform capability or Kodular as per your preference.
The app will feature an intuitive dashboard with live data visualization, historical analysis, and Google Maps integration. Security, performance optimization, and a smooth user experience will be my top priorities.
Please come on chat box and I can offer you for more information.
" I'm waiting for your Appreciate Response ",
Thank you!
Anurag.
Hello,
I am excited to propose my services for the IoT Flood Monitoring App development. With extensive experience in mobile app development and expertise in IoT, I am confident in delivering a robust application tailored to your Flood Observatory System.
I will implement a real-time MQTT data listener that processes live JSON data, ensuring users receive timely alerts via FCM and Telegram Bot API. My approach includes developing a user-friendly interface with dashboards for live data visualization, historical trends, and customizable alert settings. Moreover, I can facilitate future scalability to iOS while ensuring the app remains lightweight and efficient.
Regarding the development timeline, I can deliver a beta version within three weeks and the final release within four to five weeks, focusing on rigorous testing to ensure optimal functionality. Thanks,
Musa Alper
Hello, IoT Flood Monitoring App Development With 7 years of experience in mobile app development, I am excited to propose the creation of your IoT Flood Monitoring app. The app will seamlessly integrate with the EMQX MQTT broker, handle real-time data with Node-RED, and send custom push notifications using Firebase Cloud Messaging (FCM). Additionally, I'll implement the Telegram Bot API for alternative alerts to ensure a reliable notification system.
Key Features:
Real-time MQTT subscription for live data with JSON payload handling
Push notifications with FCM for custom alerts based on thresholds (e.g., dangerous water levels)
Google Maps integration to display flood-prone areas and historical flood data analysis
User authentication (basic or Google Sign-In) and custom alert settings
Dark Mode and accessibility features for enhanced UX
Approach & Workflow:
Use a cost-effective platform like Kodular for Android app development (with scalability for iOS)
Integrate with Node-RED APIs for data retrieval and processing, ensuring smooth backend operations
Optimize app performance for low-latency data updates and handle 100 to 1000 active users
Implement security best practices and provide full documentation and source code
I will ensure a lightweight, efficient, and user-friendly application that meets all the requirements. Let’s create a reliable flood monitoring system together!
Best regards,
Shipra
Hey,
the project will be developed by developing an android mobile application using kodular to subscribe to live data from an emqx mqtt broker. real-time data will be processed using node-red hosted on a vps, and the app will integrate with node-red apis for historical data retrieval. firebase cloud messaging will be implemented for push notifications, configured to trigger alerts when water levels exceed defined thresholds. telegram bot api integration will provide an alternative alert system, allowing users to subscribe and receive notifications. the app will feature a dashboard displaying live flood data with charts and gauges, google maps integration for flood-prone area visualization, and a historical data view. authentication will be handled via basic login. the backend will be optimized to handle concurrent mqtt requests for 100-1000 active users.
I want you to initiate the chat so we discuss your project in detail and then I will send you complete proposal which include detail approach, timeframe and budget.
we can share our portfolio in chat
I look forward to hear from you.
Regards,
Mughira
As a qualified and experienced Electrical Engineer specialized in Embedded Systems, I would be an excellent fit to develop your IoT Flood Monitoring App. Over the years, I have not only honed my skill-set around microcontrollers and FPGAs but also gained invaluable experience in working with mobile app development. Moreover, my past projects, particularly those focusing on IoT technology, are instrumental to devising optimal strategies for your project.
To best meet system requirements for your app, I'll leverage my deep understanding of MQTT subscriptions and robust backends with Node-RED to ensure smooth data connectivity processes. Additionally, I'm skilled in integrating Firebase Cloud Messaging (FCM) for real-time push notifications ensuring they trigger based on threshold conditions and implement Telegram Bot API for alternative alerts which can be subscribed to or unsubscribed from via the app.
Having tackled numerous large-scale projects involving Android and IoT development, I believe my skills and experience make me an excellent fit for your IoT Flood Monitoring App project. As a seasoned Full Stack Developer, I am not only adept at native Android app development but also well-versed in efficient integration with complex backend systems. My past experience includes utilizing Node-RED and MQTT to process real-time data, which aligns perfectly with the needs of your project.
Moreover, I am proficient in using Firebase Cloud Messaging (FCM) for implementing push notifications, featuring custom sounds and click-to-open functionality - all of which you have explicitly mentioned. On top of that, my strong UI/UX design capabilities will ensure a visually appealing dashboard with graphical representations on par with your needs and user expectations.
Lastly, having previously worked on projects with similar scale user capacity requirements, I understand the cruciality of maintaining performance, even during peak usage. My diligent optimization practices will ensure the app sustains its seamless functionality as you scale from a 100 to 1000 active users. I look forward to providing you with an impeccable solution that not only meets your specifications but elevates your overall flood monitoring system.
With over 8 years of experience in Mobile App Development and a strong background in Java, I possess the requisite skill set to expertly execute your IoT Flood Monitoring App project. I appreciate your preference of Kodular as the development platform, however, as a freelance developer who values cost-effective and constructive suggestions, I would also like to explore the possibility of developing on cross-platform frameworks such as Flutter or React Native to maximize cost efficiency while ensuring top-notch performance for both Android and iOS users.
I am a BLE expert and Full Stack Developer having an experience than 6+ years of developing BLE and IoT-based applications.I have proven experience with maintaining/implementing GPS features based on location, navigation, mapping, timing and etc. I have worked with Data logger systems, Typical GPS loggers, Data pushers, Data pullers, Covert GPS trackers, and Vehicle OBD GPS trackers. As well as I have implemented Google API, Google Maps API, Mapbox, Leaflet, Carto and GIS Expert, Mapbox, Leaflet, Google Maps API, Google Places API, etc.
I have worked on light sensor-based applications in the BLE and RFID domains. App Communicated with Ble device using firmware.. I have 4+ years of experience working with mobile and web applications. I have experience working with Arduino, Raspberry Pi, and Beacons. I have implemented lighting control for the masses, Smart location tracking using gadgets and toys, and Smart event ticketing solutions.
Hello Mate!, thanks for the job posting.
I read your project details carefully and got interested.
I am skilled in Java, Internet of Things (IoT), Mobile App Development, Android and Google Firebase. I can help you perfectly.
Please contact me to discuss more regarding this project.
Best regards
Kerr
With my strong background in industrial automation, I believe I am well-equipped to take on the role of developing your IoT Flood Monitoring App. I have worked extensively with systems involving live data processing, such as wastewater and water treatment plants. I am highly proficient in using platforms like SIEMENS TIA Portal for system software and WinCC SCADA for monitoring and control - skills that would prove invaluable in designing a reliable and efficient flood observatory system.
Furthermore, my energy automation experience where I worked on generator PLC and SCADA systems aligns closely with the scalability demands of your project. I am skilled at handling high capacities and orchestrating concurrent data requests, which is crucial given the anticipated 100-1000 active users for your app. In addition, I have extensive knowledge in working with MQTT brokers and can seamlessly integrate Node-RED APIs to facilitate real-time alerts.
Drawing from my diverse range of work experiences, especially including IoT-centric projects like yours, I have honed my ability to adapt to new technologies quickly and can confidently assure that your specified needs would be realized effectively within your stipulated timeline. Lastly, since security is a crucial aspect of any IoT project, you can trust me to handle sensitive user data responsibly and ensure that all API calls and configurations adhere to best practices. Choosing me means choosing commitment, reliability, and quality -
With a solid background in both frontend and backend development, I am the ideal choice for your IoT Flood Monitoring App project. I have ample experience in working with mobile app development technologies such as Java and platforms like Kodular, ensuring that your primary target platform on Android will be met efficiently. Moreover, I am skilled in integrating backend services, including MQTT subscription and Node-RED handling, which is crucial for processing and managing live data; precisely what's needed for your flood observatory system.
My understanding of Firebase Cloud Messaging (FCM) makes me an asset in implementing real-time push notifications. I can guarantee that your users will receive timely alerts based on relevant threshold conditions. Additionally, my familiarity with Google Maps integration will prove instrumental in displaying flood-prone areas.
What sets me apart from others is my exposure to the Web3 space including blockchain technology. This equips me to handle large-scale user capacities effectively while maintaining the security and efficiency demanded by your project. My competence extends to optimization, low-latency data updates, advanced UI/UX design aligned with interactive features like Dark Mode and accessibility traits all within a cost-effective range. Overall, I assure a fully functional app within your specified timeline and budget scope. Looking forward to bringing this application to life together!
"Previously, I built an iOT APP"
Hi, I have carefully read your project description and understand that you require the development of an IoT Flood Observatory System that provides users with live flood data and alerts. That will connect to an EMQX MQTT broker, process the data via Node-RED on a VPS, and offer users notifications through Firebase Cloud Messaging (FCM) and Telegram Bot API. Right?
I am glad to tell you that I have prior experience in building similar IoT apps. With my knowledge and skills, I can do this project with all the features and functions that you have specified, such as:
1. Real-Time Data Subscription and Monitoring:
MQTT Integration
Data Display
Node-RED Processing
2. Alerts & Notifications:
Real-Time Alerts
Push Notifications (FCM)
Telegram Bot Integration
Customizable Alert Preferences
3. User Interface & Experience:
Clean and Intuitive UI
Dashboard
Map Integration
Data History
4. Authentication & User Management:
User Accounts
Multiple User Roles
5. Device Connectivity & IoT Management:
Sensor Status Monitoring
Device Health Monitoring
6. System Configuration & Customization:
Threshold Configuration
Location-Based Alerts
7. Security:
Data Encryption
Authentication
Please contact me via chat so we can continue discussing the project.
Thanks & Regards
Prateek
Hello, I am keen to collaborate on your IoT Flood Monitoring App project. With extensive experience in mobile app development and integration of MQTT protocols, I can ensure a robust solution that meets your requirements. My approach will utilize Kodular for cost-effective Android development, ensuring compatibility for future iOS scaling. The app will feature the specified user authentication, real-time data display, and integrate both FCM and Telegram for alerts. For better understanding, could you clarify if there are specific threshold conditions you envision for triggering notifications? I look forward to discussing your project in detail and delivering a quality solution aligned with your goals.
Hi There,
Hope you're doing well!
I am excited to submit my proposal for the development of your app for both iOS and Android platforms. With extensive experience in mobile app development and a strong track record of delivering high-quality applications. We have 7+ years in the IT industry in which I have gotten a chance to work on Mobile Applications (ReactNative, Hybrid, Flutter, Xamarin) with JS technologies like VueJS, AngularJS, ReactJS, NodeJS, MeteorJS.
Below is our Sample work:
~LEAP FITNESS GROUP
~Fiskl - Mobile Invoicing App
~Agent Jack
~Inventory Unique
~Mentorship App -
~Drinkr App -
~Tipsy Tales App -
I am looking forward to hearing from you soon.
Best Regards,
Gayatri
Hello!
I’ve carefully reviewed your project requirements and am genuinely interested in working with you. I recently completed a very similar project for another client, and I believe we should have a chat—you might find it valuable!
My Expertise Includes:
✔ Development Stack: Laravel, React, Vue, Electron-Vite, Node.js, Django
✔ AI & Automation: AI Chatbots, Lip-sync, Video Streaming, Auto-caption, N8N, Bot Development
✔ AI & Market Analytics: Predictive Analytics, Market Trading
✔ Computer Vision: Image Classification, Object Detection, Facial Recognition
✔ Related Skills: Java, Google Firebase, Android, Mobile App Development and Internet of Things (IoT)
I’d love to discuss your project in detail and can start immediately. Let’s connect!
Best regards,
Ahmad F.
Hey there!
I couldn't help but notice your posting for an IoT Flood Monitoring App Developer, and I think my 5+ years of experience as a full-stack web developer could be a great fit. I've worked extensively with WordPress, PHP, and frontend techs like JavaScript, React.js, and Vue.js, and I'm always eager to take on new challenges.
One project that's particularly relevant is the smart home app I built for a client last year. It connected various IoT devices and sensors to monitor and control things like temperature, humidity, and water levels. I'd be happy to chat more about how I can apply that experience to your flood monitoring app.
I'm confident I can help your team deliver a secure, scalable solution that meets your SOC 2 compliance requirements. Let me know if you'd like to discuss this further!
Looking forward to hearing from you.
Dear Sir/Madam,
I hope this message finds you well. My name is Xiaoteng, and I am a seasoned full-stack developer with 12 years of experience in mobile and web development, specializing in scalable, real-time applications. Your project, an IoT Flood Observatory System mobile application, aligns perfectly with my expertise in MQTT-based real-time data processing, cloud integration, and user-friendly mobile app development. I am excited about the opportunity to contribute to this critical system, ensuring reliable flood monitoring, real-time notifications, and an intuitive user experience.
Why Choose Me?
Extensive Technical Expertise in IoT & Real-Time Systems
Deep understanding of EMQX MQTT and real-time data handling, ensuring efficient and scalable MQTT topic subscriptions.
Strong experience integrating Node-RED with mobile applications, optimizing API interactions for historical data retrieval.
Expertise in Firebase Cloud Messaging (FCM) & Telegram Bot API for seamless multi-channel notifications.
Proven ability to build Android (Jetpack Compose) and cross-platform apps (Flutter, React Native) for cost-effective solutions.
Best regards,
Xiaoteng
Hello,
I am excited about the opportunity to develop a mobile application for your IoT Flood Observatory System. With my experience in mobile app development and IoT systems, I am well-prepared to deliver an app that is both efficient and user-friendly.
My approach will focus on creating a robust Android application using Kodular to ensure cost-effectiveness, with potential scalability to iOS in the future. I will integrate real-time data processing from your EMQX MQTT broker via Node-RED hosted on your VPS, ensuring seamless communication and data handling. Push notifications will utilize Firebase Cloud Messaging, offering customizable alerts with unique sounds and app interaction.
The app will feature an intuitive dashboard with live flood data, maps highlighting flood-prone regions, and customizable alert settings. The inclusion of Telegram Bot API will provide an alternative alert system, catering to diverse user preferences. I will ensure the app is optimized for performance, accommodating up to 1000 active users efficiently.
Thanks,
Artem
