Full-Stack Developer for Hotel Automation Suite

@shrec

Dear client, I am a Full-Stack Developer with 12+ years of experience building Chrome Extensions and hardware-integrated web applications. I specialize in Vue.js/Angular frontends, Node.js/Supabase/PostgreSQL backends, and real-time multi-terminal sync via WebSockets. Build a Chrome Extension ecosystem to handle ID scanning, digital signatures, and key card encoding. Use a central cloud database with real-time WebSockets to ensure that three terminals checking in guests simultaneously stay perfectly synchronized. Implement Native Messaging (Python/Node.js) for seamless hardware integration. I have delivered similar systems with OCR, RFID access control, and POS workflows. I can take your hospitality suite from zero-to-one and ensure it’s robust, scalable, and secure. Best regards, Ivane

@OutsourceMan

With almost two decades of experience in web and app development, CnELIndia is well-equipped to handle the complexity of your hotel automation suite project. Our deep understanding of API development, cloud computing, JavaScript, Node.js, PostgreSQL and software architecture aligns perfectly with the technical challenges you have articulated. We've accomplished projects that involve Chrome extensions and hardware/IoT integration before. In terms of ensuring data synchronization between three different computers simultaneously checking in guests, our approach would be to implement WebSockets on a cloud-based source of truth (in this case Supabase/PostgreSQL or any other preferred cloud architecture). The data from all terminals would be updated on the central database in real-time by triggering synchronized events through WebSockets. Choosing us for this important project means entrusting it to a team that keeps its commitments, meets budgets and delivers success. From automated OCR to secure digital signatures, we'll demonstrate our meticulousness and elegance in developing each module. Additionally, as you expand into new ventures, we have the scalability and foresight required for long-term partnership. Let's transform your hotel business with smooth automation!

@softsolution2000

I have extensive experience in developing Chrome Extensions and integrating hardware/IoT systems. To ensure real-time data synchronization across multiple terminals, I would implement a cloud-based source of truth using Supabase/PostgreSQL along with WebSockets for instant updates. By leveraging Node.js for backend development and creating a Native Messaging Host in Python or Node.js for hardware integration, I will orchestrate seamless communication between the Chrome Extension and local devices. My goal is to architect a reliable and efficient hotel automation suite that optimizes operations and enhances guest experience. Let's discuss your project requirements further to tailor a solution that meets your specific needs. Please go through my profile its 15 years old see the work I did over the years. No Win No Fee means that your satisfaction is my utmost priority. Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you.

@sunainawbst

✅Full Stack | Chrome Extension | Node.js | React | WebSockets | IoT Integration | System Architecture✅ Hello I have reviewed your project requirements and understand that you want to build a zero-to-one Chrome Extension–based automation suite with hardware integration (scanners, RFID), real-time sync across terminals, and modules for OCR, signatures, and key encoding. I can architect a scalable system using React + Chrome Extension APIs, Node.js backend with PostgreSQL (Supabase), and WebSockets for real-time sync, along with a Native Messaging bridge (Node) to securely connect local hardware devices. For synchronization, I would implement a centralized cloud state (Supabase/PostgreSQL) with WebSocket-based event streaming so all terminals receive instant updates, combined with conflict handling (timestamps/locks) to ensure consistency when multiple check-ins happen simultaneously. Due to NDA, I’ll share relevant Chrome extension and hardware integration work in chat. Let’s connect and discuss architecture, modules, and rollout plan. Thanks & Regards Purnima

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Custom Chrome Extension for Your Hotel Management System ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project details and see you're looking for an expert Full-Stack Developer. You have no need to look any further as Zohaib is here to help you! My team has successfully completed over 50 similar projects in creating custom software solutions. I will build a Chrome Extension to streamline ID scanning, digital signatures, and key encoding in real-time across multiple terminals. ➡️ Why Me? I can easily develop your hotel management system as I have over 10 years of experience in full-stack development, focusing on Chrome Extensions, hardware integration, and real-time synchronization. My skills include working with various tech stacks like Node.js, React, and PostgreSQL. I also have a strong grip on integrating hardware devices and ensuring seamless data flow. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm looking forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ Full-Stack Development ✅ Chrome Extension Development ✅ Hardware Integration ✅ Real-time Data Synchronization ✅ Node.js ✅ PostgreSQL ✅ React/Vue.js ✅ WebSockets ✅ Python ✅ Digital Signatures ✅ API Development ✅ Automated OCR Waiting for your response! Best Regards, Zohaib

@AITSoft

Hello, I understand you want to build a new hotel automation system from scratch, replacing your current Windows-based one. The biggest part is making a Chrome Extension that works closely with hardware like ID scanners, RFID key encoders, and integrates everything across multiple hotel desks in real-time. I would build a strong bridge between the extension and hardware using Python or Node.js, while syncing data instantly across terminals with a cloud database like Supabase. The plan also covers automating ID checks, capturing digital signatures safely, and generating key cards linked to your locks. I know how important quick, smooth real-time syncing is when multiple computers handle check-ins at once, and I'd ensure the system uses solid WebSocket connections and a single source of truth backend so each terminal updates immediately as tasks happen. What hardware models will we be working with for scanners and RFID encoders, and do you have their SDKs or APIs available? Thanks,

@kamran2012

Hi, I will build your Chrome Extension ecosystem — ID scanning module, digital signature capture, and RFID lock integration — all synchronized through a Supabase backend with real-time Postgres subscriptions. For multi-terminal sync during simultaneous check-ins, I will use Supabase Realtime channels with row-level security and optimistic locking. Each terminal subscribes to a shared channel, and every write includes a version counter — so if two agents check in the same room concurrently, the conflict is caught instantly rather than silently overwritten. Questions: 1) Which RFID lock system are you using — ASSA ABLOY, Salto, or another vendor with an available SDK? 2) For the Native Messaging Host, do the front-desk machines run a consistent Windows version, or do I need to account for mixed environments? Looking forward to potentially working together. Thanks, Kamran

@Rekhathakur

Hello I have thoroughly reviewed your project description and am confident in my ability to assist you in completing it successfully. I believe it would be highly beneficial to delve deeper into the specifics of the job to determine the most effective way forward. I am open to scheduling an interview at your convenience, and I genuinely appreciate the chance to collaborate with you on this project. Your response is eagerly anticipated, and I'm excited about the prospect of working together. Thank you for considering my proposal. Looking forward to your prompt reply! Best regards Rekha!!!

@Herculesz

Hi, I can help you architect and build this from the ground up, especially because it sits right at the intersection of browser automation, real-time systems, backend design, and local hardware integration. I have strong experience with full-stack product architecture, Chrome extension workflows, Node.js backends, PostgreSQL, WebSocket-based sync, and native bridge patterns for connecting browser tools to local devices. The hardest part in a system like this is usually not any single module, but keeping three front-desk terminals synchronized in real time while they are scanning IDs, capturing signatures, and encoding room keys at the same time without collisions or stale data. I would solve that by using a central cloud source of truth with transactional updates, terminal-aware session locking, and event-driven sync so each workstation always sees the latest guest and room state immediately. For the local device layer, I can build a Native Messaging Host in Python or Node.js to bridge the extension safely to scanners, signature devices, and encoder SDKs. I’m also comfortable structuring the extension with service workers, content scripts, and secure messaging so PMS scraping and injection stay reliable and maintainable. The result would be a clean, scalable automation suite that is stable at the desk level and ready to expand into your next venture once the hospitality stack is solid. Thanks, Hercules

@corpmember29

Hello, {{{ I HAVE CREATED SIMILAR (Hotel Automation Suite ) BEFORE AND I CAN SHOW YOU }}}} I have carefully reviewed your requirement for building a hotel automation suite with Chrome Extension, hardware integration, and real-time synchronization. With 10+ years of experience in full-stack development, Chrome Extensions, and hardware/IoT integrations, I have worked on systems involving OCR, device communication, and real-time multi-terminal environments. For synchronization across multiple terminals, I will implement a centralized cloud-based source of truth (Supabase/PostgreSQL) with WebSocket-based real-time updates. Each terminal will push events (check-in, ID scan, key encoding), and all connected clients will receive instant updates with conflict handling (timestamps/locking) to ensure data consistency. My approach includes building the Chrome Extension (content scripts + service workers), integrating a Native Messaging Host (Node/Python) for scanners/RFID devices, and developing modules for OCR-based ID processing, digital signatures (PDF), and lock system integration via SDK/API. The system will be secure, scalable, and optimized for real-time operations. I WILL PROVIDE 2 YEAR FREE ONGING SUPPORT AND COMPLETE SOURC CODE, WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PUBLISHING ON STOIRES. I can share similar work and a detailed technical plan after discussion. I eagerly await your positive response. Thanks.

@Feriver

Hello, I will architect and build your Chrome Extension–based hotel automation suite with a strong focus on real-time synchronization, hardware integration, and scalable system design. I have extensive experience in full-stack systems, including Chrome Extensions (service workers, content scripts), Node.js backends, and PostgreSQL with WebSocket-based live sync. For synchronization, I will implement a centralized cloud state (Supabase/PostgreSQL) with WebSockets and conflict-resolution logic to ensure atomic updates when multiple terminals check in guests simultaneously. Hardware integration will be handled via a secure Native Messaging Host (Node.js/Python) to interface with scanners, RFID encoders, and cash devices reliably. Each module (ID OCR + DNR validation, digital signatures with PDF generation, lock encoding, and cash handling integration) will be developed as a decoupled, testable service. The system will be production-ready, secure, and optimized for multi-terminal concurrency with full audit tracking. Thanks, Asif

@planDapps

SYNCHRONIZED HARDWARE TO BROWSER ARCHITECTURE To ensure 100% data integrity across three terminals simultaneously, we will implement a WebSockets layer over PostgreSQL (Supabase) with Realtime Subscriptions. Any action on Terminal A (ID scan or room assignment) is broadcasted and locked on Terminals B and C in sub 100ms, eliminating race conditions and double-bookings. At Plan D Studios, we bring 12+ years of experience in software architecture and custom software, specifically bridging browser sandboxes to local hardware. Our Technical Strategy: Hardware Bridge: A Node.js Native Messaging Host to bypass Chrome limitations and interface directly with USB RFID encoders and Spectral Payout hardware. PMS Orchestration: Advanced content scripts and Reverse Engineering to inject data into your existing web PMS seamlessly. Module Build: In house OCR for ID validation and secure PDF generation for the Sign Module, all synced via a cloud API integration. We do not outsource; all Node.js, Vue.js, and automation logic is handled by our senior in house team. Have you finalized the SDKs for the RFID encoders, or should we evaluate bridge compatibility during discovery? Regards, Haider

@purplemaestro

Hi. I'm an experienced full-stack developer with a proven track record building scalable web applications and integrating third-party hardware systems. I have expertise in PMS integrations and can handle both single-property and multi-tenant architectures to support your future growth. I'm comfortable conducting integration research for RFID locks and payment systems, or working with existing SDK documentation you provide. My approach prioritizes clear communication through milestone-based delivery to ensure the project runs smoothly and meets your exact specifications. I'm ready to discuss your specific requirements and provide a detailed timeline once we clarify the scope.

@InterconnectBPO

Hi, We are a skilled full-stack team with 10+ years of experience in React/Vue.js, Node.js, Python, PostgreSQL/Supabase, and Chrome Extensions, specializing in web + hardware integration. We can build your unified hotel automation system Central Web Portal, Chrome Extension for PMS (SynXis/eZee Absolute), and Middleware for cashboxes, ID scanners, and RFID locks ensuring real-time synchronization across multiple terminals via WebSockets and a cloud-based source of truth. Our Approach: Hardware Bridge: Native Messaging Host in Python/Node.js to connect Chrome Extension with local devices. Modules: ID Module – OCR & DNR validation Sign Module – Digital signatures & PDFs Lock Module – RFID key card generation Cash Module – Spectral Payout transactions We ensure simultaneous guest check-ins remain consistent across terminals using live updates and timestamped event handling. Experience: Chrome Extensions, IoT/Hardware integration, real-time data sync, and payment automation. We’d love to start with a prototype to validate synchronization and hardware communication. Best regards, Interconnect Team

@arbu1499

Hi! I’m excited about building your zero-to-one hospitality automation suite. I have extensive experience with full-stack development, Chrome Extensions, and hardware integrations. For your system, I’d implement a Native Messaging Host (Python/Node.js) to securely communicate with USB/TWAIN scanners and RFID encoders, while using PostgreSQL (Supabase) with real-time listeners via WebSockets to keep all terminals perfectly synchronized. Content scripts would handle PMS interactions safely, and modules for ID scanning, digital signatures, and lock/key encoding would be fully integrated and robust. I’ve previously delivered Chrome Extension + hardware integrations that managed concurrent device inputs with near-instant cloud sync. Looking forward for your positive response in the chatbox. Best Regards, Arbaz M

@softwarelinkerrs

With over 10 years of industry experience as a Full-Stack Developer, I am particularly adept at handling complex projects like the one you've detailed. I have extensive knowledge of Chrome Extensions and Native Messaging Hosts, which would be core to bridging your extension with local hardware, such as USB/TWAIN scanners and RFID key card encoders. Additionally, my mastery of JavaScript, Node.js, and RESTful API development perfectly aligns with your project's needs. Data synchronization is paramount in your project, especially with multiple front desk terminals working simultaneously. Utilizing my solid command of WebSocket technology, I can design a seamless protocol that ensures instantaneous updates on all three systems whenever there is a new guest check-in or any other PMS actions performed. Furthermore, my work philosophy revolves around understanding clients' business goals and designing solutions that are not only secure and scalable but also future-ready. I believe in becoming a valued partner rather than just an external developer. If you entrust me with this exciting venture, I'm confident that my skills, experience, and dedication will be the right match for enabling your Hotel Automation Suite vision to materialize successfully.

@johnallenvillan1

Hello, I see you’re replacing a third‑party Windows PMS with a synchronized Chrome Extension ecosystem that can manage ID scanning, digital signatures, and key encoding across multiple terminals. I’ve built similar hardware‑integrated extension systems, including a TWAIN‑based ID module for a resort chain and a WebSocket‑driven lock‑encoder service that reduced check‑in time by 40%. I’ve learned that the real risk in projects like this isn’t the hardware calls themselves but keeping the local native host, browser extension, and cloud sync layer consistent under load, especially when multiple terminals create overlapping check‑in events. Concurrency and idempotency rules need to be engineered up front. I’ll implement a Native Messaging Host in Node.js to manage scanners and RFID encoders, enforce event‑level locking in PostgreSQL, and broadcast state changes through WebSockets so every terminal stays aligned within milliseconds. I’ll also isolate PMS content‑script logic to avoid brittle dependencies and keep instrumentation controlled. Before proceeding, I need details on your lock vendor SDK and how the Spectral Payout hardware is currently configured. Thanks, John allen.

@juanjosec63

Hi, I’m available to start right away. I have strong experience with modern web technologies like Chrome Extension development, Native Messaging with Node.js and Python, React.js, PostgreSQL with Supabase, WebSocket real-time synchronization, OCR integration, hardware and SDK interfacing, and scalable full-stack architecture, You can expect clear communication, fast turnaround, and a high-quality result that fits seamlessly into your existing workflow. Best regards, Juan

@DeveloperStation

Hi, We’ve developed multiple Chrome extensions that integrate with hardware, including a solution for a client that used a USB-connected camera to capture images and send them to an external server for processing. We also built a web app that allowed users to manage multiple cameras and schedule image captures. For your project, we can use a dedicated web server to handle image processing and serve as a central hub for multiple Chrome extensions. This way, we can avoid overloading the extension with heavy processing tasks and ensure it remains lightweight and responsive. We’re also experienced with real-time data synchronization using WebSockets and have worked with various databases like MySQL, PostgreSQL, and MongoDB. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m looking forward to hearing more about this exciting project. Best regards, Adil