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Project Title: React Developer Needed for Custom Lead Management PWA (Construction Sales) Project Description: I need an experienced React developer to build a custom mobile-first web application (PWA) for my construction sales team. This is legitimate business software – I'm hiring a freelancer to write original code from scratch based on my specifications. What I Need: A simple mobile app that helps my team manage outbound sales calls. The app will: Display one lead at a time based on priority rules I'll provide Let salespeople tap to call or WhatsApp the lead (using device native functions) Record call outcomes (answered/not answered, transfer to different lists) Store all data in Supabase (free tier) Technical Requirements: Frontend: React (functional components, hooks) – built with Vite or Create React App Backend: Supabase (direct connection – no custom API needed) Styling: Mobile-first responsive design (Tailwind, Bootstrap, or plain CSS – your choice) Hosting: Static site (Netlify/Vercel) – you can deploy or I'll handle it All business logic runs in the frontend: Priority formula: (stage × 100) + urgency – (call_count × 20) 48-hour cooldown after calls Auto-transfer to "Visit" after 5 calls Status options: pending, current, visit, trash Database Schema (I'll create this in Supabase): text leads table: - id (uuid, primary key) - name (text) - phone (text) - address (text) - stage (integer 1-10) – from external prediction engine - urgency (integer 1-10) - call_count (integer) - missed_call_count (integer) - last_called (timestamp) - status (text: pending/current/visit/trash) - next_appearance (date) - created_at (timestamp) Deliverables: Complete React source code in a private GitHub repository README with setup instructions and environment variables Working demo (optional but appreciated) Budget: Fixed price $400-$800 (based on experience) Timeline: Maximum 2 weeks Skills Required: React (required) Supabase or Firebase experience (required) JavaScript ES6+ CSS (responsive/mobile design) Git How to Apply: Please include in your bid: Links to previous React + Supabase projects you've built Your approach to structuring this app Confirmation you can deliver within 2 weeks Your fixed-price bid Additional Notes: All communication will stay on Freelancer until project is awarded This is custom development – I own all rights to the final code No account transfers, no end-product purchasing – you're building this from scratch for me I will provide Supabase credentials and sample data upon hiring
Projekt-ID: 40257035
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225 freelancere byder i gennemsnit $537 CAD på dette job

⭐⭐⭐⭐⭐ Dear Valuable Client, CnELIndia, led by Raman Ladhani, is well-positioned to deliver your custom React PWA for construction sales. We will build a mobile-first, responsive app using React functional components and hooks, styled with Tailwind for optimal UX. The app will seamlessly integrate with Supabase, managing lead priorities, call outcomes, and status updates entirely on the frontend. We will implement your priority formula, 48-hour cooldowns, and automatic “Visit” transfers after 5 calls. Hosting on Netlify/Vercel and deployment instructions will be included. Our team ensures clean, original code in a private GitHub repo, with thorough README documentation. With prior experience in React + Supabase projects and efficient workflows, we can deliver this fully functional PWA within 2 weeks, ensuring your sales team can immediately manage leads effectively. Fixed-price bid: $700.
$500 CAD på 7 dage
8,3
8,3

Hello, Greetings Hope you are doing well. I am a Mobile Application developer with over 5 years of experience. I am confident in my ability and skills to develop high-quality Mobile apps and would like to work on your project. I will complete the work as per your requirements. I want to discuss more this project to prepare the final concept. So let’s discuss this in detail over chat then will make plans to start work on it. Waiting for your earliest reply. Thanks. Shubham
$250 CAD på 14 dage
8,0
8,0

I HAVE BUILT MOBILE-FIRST REACT PWAs FOR SALES AND LEAD MANAGEMENT USING SUPABASE. I am a React developer with 10+ years of experience delivering custom business applications built from scratch. I can develop a clean, mobile-first PWA for your construction sales team that displays one prioritized lead at a time, enables tap-to-call and WhatsApp actions, records call outcomes, and manages lead lifecycle states (pending, current, visit, trash) exactly as specified. The app will be built using React (functional components + hooks) with Vite, Supabase as the backend (direct connection, no custom API), and a responsive mobile-first UI. All business logic—including priority formula, cooldown handling, call counters, and auto-transfer rules—will run fully on the frontend. Data will sync reliably with Supabase free tier and be deployment-ready for Netlify or Vercel. Deliverables include complete source code in a private GitHub repository, a clear README with setup instructions, environment variables, and an optional working demo. I can confidently deliver within 2 weeks and within your stated budget. I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE, WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PUBLISHING ON STOIRES. I eagerly await your positive response. Thanks
$350 CAD på 7 dage
8,3
8,3

Hello, HAVE HANDS-ON EXPERIENCE WITH SUCH PROJECT I have 10+ years of experience in React and full-stack development, including Supabase/Firebase integrations, and I clearly understand your requirement for a mobile-first construction sales lead management PWA with priority-based lead display and native call/WhatsApp functionality. Your goal is to build a lightweight, responsive PWA that enables your team to efficiently manage outbound calls, track outcomes, and automate lead status updates. -->> Mobile-first React frontend using functional components + hooks -->> Supabase integration for real-time data storage and updates -->> Priority-driven lead display with auto-cooldown and status transitions -->> Tap-to-call and WhatsApp interactions using device-native APIs -->> Responsive design using TailwindCSS (or preferred styling) I will structure the app with a clean component hierarchy, state management via React hooks/context, and all business logic in the frontend to respect your Supabase-only backend requirement. Deliverables include full source code in a private GitHub repo, setup instructions, and an optional working demo. I can complete this project within 2 weeks. in chat as I have a few clarifying questions on edge cases for status transitions and lead prioritization rules. Thanks & regards Julian
$250 CAD på 7 dage
8,4
8,4

Hello I have read your job and I am very interested in developing the React-Driven Construction Sales Lead Management App for you, since I have done a similar type of project, so I am very clear with the flow. I have more than 6 years of experience in the development of websites and applications (Android, iOS). I developed the taxi booking application, the chat and appointment application, the development of shopping cart applications, etc. My experience as a developer includes working with mobile applications when integrating them with different platforms using a variety of protocols that make me perfect for their work. In the past I worked for many applications development projects that required extensive details. I hope you choose me for this job, Do you already have user interface design screens? Please share the details of your project to start working together, Waiting answer, Thank you.
$2.500 CAD på 35 dage
7,8
7,8

Hi there, I’m ready to start immediately and will build your custom lead management PWA using React. I will ensure the app displays leads based on your priority rules and allows for easy call and WhatsApp integration. I've previously developed a similar app that managed sales leads effectively. Can you clarify how you want the priority rules to be set up in detail? Regards, Burhan Ahmad
$400 CAD på 5 dage
7,7
7,7

Hello there, I will build your lead management PWA in React with Supabase, one lead at a time ranked by your priority formula, tap-to-call and WhatsApp, outcome logging, cooldown logic, and auto-transfer after five calls. I will centralize the ranking in a single useLeadQueue hook so the priority formula and cooldown filtering live in one place, easy to adjust thresholds later without touching multiple components. Questions: 1) Will multiple salespeople use this simultaneously, or is it single-user? 2) Do you need offline support via service worker, or is always-online acceptable? Looking forward to potentially working together. Thanks, Kamran
$800 CAD på 10 dage
7,9
7,9

Hi, As the CodeNomad team, we specialize in delivering a blend of unique skills that perfectly align with your requirements. Our expertise in React.js ensures we can create a custom, mobile-first web application that meets your construction sales team's needs with ease. With 12+ years of experience serving clients globally and being one of the top-rated experts on Freelancer.com, our code-writing capabilities are unmatched. True to your project's demands, we have hands-on proficiency in Supabase, which means we can swiftly and accurately store all data as per your needs without any additional API creation. Apart from this, our git skills guarantee a seamless sharing and transfer of code throughout the project's lifecycle. Lastly, meeting deadlines is second nature to us. Our time management has helped us continuously deliver quality projects to satisfied clientele for a dozen years and more. Thanks....
$750 CAD på 7 dage
7,5
7,5

Hi! I can build this as a mobile-first PWA that keeps your sales team in a tight loop: show the right lead, make the call/WhatsApp in one tap, and record the outcome so the queue updates itself automatically. The core is a “one-lead-at-a-time” screen driven by your rules: the priority score, the 48-hour cooldown after a call, and the automatic move to Visit after 5 attempts. Salespeople won’t be hunting through lists—each action updates the lead (call counts, last called, next appearance, status) so the next lead is always ready. On the data side, Supabase is a good fit, but I’ll set it up so it’s safe for real use: team sign-in (if you want it) and database rules so only the right updates are allowed. That way you keep the “no custom API” approach without turning your database into a public spreadsheet. Deliverables: clean React code in a private GitHub repo, a clear README (env vars + setup), and a working build you can deploy on Netlify/Vercel (or I can deploy it for you). I can deliver within your 2-week timeline. Nico – widuIT - Top Freelancer LATAM
$700 CAD på 14 dage
7,2
7,2

PRIORITY LEAD MANAGEMENT: SCALABLE REACT + SUPABASE PWA FOR CONSTRUCTION SALES I have reviewed your priority formula and schema requirements. At Plan D Studios, we specialize in building lightweight, logic heavy custom software that empowers field teams. With 12+ years of experience in web development and mobile app architecture, we ensure your sales logic is executed with pixel perfect precision. Technical Strategy: Architecture: We will build the frontend development using React with Vite for maximum speed. Tailwind CSS will be used for a robust mobile first UI. Logic Engine: Your priority formula and the 48 hour cooldown will be managed via custom React hooks, directly interacting with your Supabase instance to ensure data integrity and "lead truth." Deployment: We will provide a clean GitHub repo with Vercel deployment readiness and clear documentation. Direct Answers: 2 Week Delivery: Confirmed. We can deliver the final code within 10 days. Original Code: We do not outsource; all work is done in house. Projects: We have built similar CRM and dashboard tools using Supabase's real time features. Would you like to see a quick video demo of a similar React lead management tool we’ve recently deployed? Regards, Haider
$750 CAD på 30 dage
7,2
7,2

React frontend using functional components and hooks? styled mobile first with Tailwind (or your preferred CSS framework)? Perfect Implement all business logic in the frontend, including your priority formula, 48-hour cooldown, auto-transfer rules, and status management Connect directly to Supabase to store and update leads in real-time, ensuring smooth call tracking and status updates Enable native device actions for calling and WhatsApp directly from the app Provide clean, documented code in a private GitHub repository with a README for setup and environment variables Lets do quick cal, If possible
$690 CAD på 7 dage
7,2
7,2

Hello, I will develop your CONSTRUCTION SALES MANAGEMENT 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
$250 CAD på 22 dage
6,5
6,5

Hi there, I am a top freelancer based in California with extensive experience in building mobile-first web applications using React. I understand the importance of a robust lead management system for your construction sales team. With expertise in React functional components and a strong background in integrating with Supabase, I'm confident that I can deliver a tailored solution that meets your specific requirements. I will ensure the app efficiently manages outbound sales calls, displaying leads individually based on your priority rules, and streamline functionalities for calling and capturing outcomes. My focus will be on delivering a responsive design that enhances user experience and meets your timeline of two weeks. I would love to discuss this further and ensure we align on all specifications. What specific priority rules do you have in mind for displaying leads? Best regards,
$610 CAD på 7 dage
6,2
6,2

Hello! As per your project post, you’re looking to build a Construction Sales Lead Management React App for your construction sales team that displays prioritized leads, enables direct call or WhatsApp contact, and records call outcomes while syncing all data with Supabase. The goal is to create a fast, easy to use lead management tool that improves call efficiency, ensures structured follow ups, and helps your team manage outbound sales effectively. My focus will be on building your lead management PWA featuring: mobile first responsive React interface optimized for quick lead access, seamless call and WhatsApp integration using device native functions, priority based lead display with cooldown and status automation logic, and real time Supabase integration for secure data storage and synchronization. The app will ensure smooth performance, reliable tracking, and scalable structure for future enhancements. I specialize in React and Supabase based application development with focus on clean frontend architecture, efficient state management, and scalable database integration. My focus will be on delivering a fast, installable PWA that simplifies your sales workflow and improves team productivity. I am confident I can deliver a reliable, mobile friendly lead management app tailored to your team’s workflow. Best regards, Nikita Gupta.
$1.000 CAD på 28 dage
6,3
6,3

Hi I can build your mobile first React PWA exactly as specified, with clean functional components, hooks based state management, and direct Supabase integration. I have experience structuring lightweight sales and CRM style tools where business logic runs fully on the frontend while keeping the data layer simple and reliable. I would structure the app into three core layers: a Supabase data service module, a lead engine module that handles priority scoring, cooldown logic, and status transitions, and a mobile optimized UI layer. The priority formula, 48 hour cooldown, auto transfer to Visit after 5 calls, and list filtering will be encapsulated in reusable utility functions to keep the logic testable and maintainable. The interface will be optimized for fast single lead focus, tap to call or WhatsApp deep linking, and quick outcome logging. Deployment can be done via Vercel or Netlify, and you will receive a complete GitHub repository with clear README setup steps. Best, Justin
$500 CAD på 7 dage
6,4
6,4

Hello, I hope you are doing well. I understand that you are looking to build a MOBILE APPLICATION and I would be happy to help. I have extensive experience in designing and developing Application and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.
$250 CAD på 7 dage
6,9
6,9

Hello, I am really excited about the opportunity to collaborate with you on this project! It aligns perfectly with my skill set and experience, and I’m confident I can contribute meaningfully to your vision. I genuinely enjoy working on projects like this, and I believe we can create something both functional and visually engaging. Please feel free to check out my profile to learn more about my past work and client feedback. I’d love to connect and discuss the project details further your goals, expectations, and any specific features or ideas you have in mind. The more I understand your vision, the better I can bring it to life. I am ready to get started right away and will put my full energy and focus into delivering quality results on time. My goal is not just to complete the project, but to exceed your expectations and build a long-term working relationship. Looking forward to hearing from you soon! With regards! Abhi
$500 CAD på 7 dage
6,5
6,5

With strong experience in React (functional components and hooks) and backend integrations like Supabase, I can confidently deliver a clean, reliable solution aligned with your existing tech stack. I focus on well-structured front-end architecture while ensuring smooth data handling and business logic integration. I’ll implement mobile-first, responsive designs using Tailwind, Bootstrap, or custom CSS so your sales team can manage leads seamlessly across devices. I also understand the importance of your priority rules and automation logic (such as auto-transfer after 5 calls) and will ensure these workflows function accurately and efficiently. I’m comfortable delivering high-quality work within your timeline and fixed $600 budget, with clear communication throughout the project. Thanks, Jay
$500 CAD på 7 dage
6,1
6,1

Hi there To build this lead management PWA correctly, the most critical part is implementing the priority engine and state transitions cleanly. The formula (stage × 100) + urgency – (call_count × 20) plus the 48-hour cooldown and auto-transfer rules must be deterministic and predictable so your team always sees the right lead next. I’ll structure the app using React functional components with hooks, separating business logic into dedicated utility modules. Supabase will handle persistence directly from the frontend, with filtered queries to fetch only eligible leads based on status and next_appearance. Call outcomes will immediately update call_count, timestamps, and status transitions in a controlled way to avoid inconsistent states. The UI will be fully mobile-first, optimized for one-handed use, with tap-to-call and WhatsApp deep links using native device capabilities. My process is simple: Define lead-selection and cooldown logic clearly Build React + Supabase integration with clean state handling Test edge cases and deploy to Vercel/Netlify Fixed price: $4,000 CAD Delivery: within 2 weeks If this aligns with you, let’s discuss in detail via private chat.
$4.000 CAD på 10 dage
5,9
5,9

Hello There!!! ★★★★ ( React-Driven Construction Sales Lead Management App ) ★★★★ I understand you need a mobile-first React PWA for your construction sales team that shows one prioritized lead at a time, enables tap-to-call/WhatsApp, and stores all activity in Supabase. The focus is clean logic, speed, and reliable workflow. ⚜ React PWA with hooks and functional components ⚜ Lead priority engine implementation ⚜ Tap-to-call and WhatsApp integration ⚜ Supabase direct database connection ⚜ Mobile-first responsive UI ⚜ Status flow and cooldown automation ⚜ GitHub repo with clean README With 9+ years in web apps, I’ve built several sales dashboards and Supabase-driven tools. I write clean, original code and keep performance very light for field teams. My approach is Vite + React + Tailwind, Supabase client integration, and structured state logic for priority rules and cooldown timers. Yes, I can deliver within 2 weeks. Let’s discuss your lead flow and start quickly. Warm Regards, Farhin B.
$256 CAD på 12 dage
6,5
6,5

Surrey, Canada
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