Requests hamad -- 2

PROJECT TITLE: Senior Full-Stack Engineer / Team: Multi-Portal Ordering & Operations Platform (Figma & DB Ready) PROJECT OVERVIEW: We are seeking an experienced Senior Full-Stack Engineer or Development Team to build the backend and client applications for an advanced Multi-Portal Ordering and Venue Operations Platform. All UI/UX designs are 100% completed in Figma, the database schema is fully defined, and API specifications are ready. Full technical specifications will be shared with shortlisted candidates. CORE DELIVERABLES: 1. Customer Mobile App (iOS & Android): - Digital ordering, table/seat booking, and real-time status tracking. 2. Three Operational Web Portals: - Super Admin Dashboard (Multi-tenant governance & analytics). - Branch / Venue Management Portal (Catalog, resources, and live operations). - Kitchen / Staff Display System - KDS (Real-time order queue & fulfillment). 3. Backend & Real-Time Sync: - Relational database implementation, role-based access control, secure APIs, and WebSocket integration for live status updates. TECH STACK (OPEN): We do not restrict the technology stack. You are free to propose your preferred, proven stack for mobile (Flutter, React Native, or Native) and backend/frontend (Node.js, Laravel, Python, etc.) based on speed, security, and scalability. ENGAGEMENT: Strictly milestone-based contract. Payments are funded in advance and released upon verifiable code deployment and Git repository reviews. TO APPLY: Please share links/demos of similar multi-portal or ordering systems you have built, along with your proposed tech stack and realistic timeline. Project ID: 40697005 41 proposals Open for bidding Remote project Active 3 secs ago Bid amount Email address Set your budget and timeframe It's free to sign up and bid on jobs 41 freelancers are bidding on average $1,028 USD for this job $750 USD in 8 days Hello, I'd love to help with the Senior Full-Stack Engineer / Team project for the Multi-Portal Ordering & Venue Operations Platform. At Xanvra Technologies, we specialize in Mobile App Development, Android, Android App Development, iPhone, iOS Development, and delivering clean, secure, responsive work. From your brief, you need a Customer Mobile App for digital ordering and real-time tracking, along with three Operational Web Portals and backend implementation for real-time sync. Our team has experience in similar projects and is well-equipped to handle the task efficiently. Our approach involves thorough discovery, design/setup, development, and QA/launch phases to ensure a successful outcome. We prioritize performance, security, and clear communication throughout the project. We are excited about the opportunity to work on this project and can align on scope and milestones via Freelancer chat. Please find our portfolio at - MY WORK STATS: ✨ https://www.freelancer.com/u/wardahaider110 Best regards, Team Xanvra Technologies $750 USD in 8 days $750 USD in 4 days Hi there, Your project is well suited to a structured full-stack build since the Figma designs, database schema, and API specifications are already prepared. I can help turn those specifications into the customer mobile app, three operational portals, and the real-time backend. I'd propose React Native for iOS/Android, with Node.js/NestJS for the backend, PostgreSQL for the relational data layer, and WebSockets for live order and fulfillment updates. The architecture would include multi-tenant access control, secure APIs, role-based permissions, and clear separation between customer, venue, kitchen, and super-admin workflows. I'd approach the work milestone by milestone, with each stage deployed and reviewed through the Git repository before moving forward. A realistic timeline would be around 8–12 weeks depending on the final API and Figma specifications. I can share relevant examples of multi-portal and ordering functionality based on the areas you'd like to review. Best, Ivane $1,125 USD in 7 days Hello, With over 15 years of solid experience, a proven track record, and an extensive skillset that aligns perfectly with your project, I believe that I am the Senior Full-Stack Engineer you need to build your Multi-Portal Ordering and Operations Platform. Having built numerous web and mobile applications with similar functionality throughout my career, I'm confident in my ability to transform your existing designs and database schema into a scalable, secure, and highly efficient system. With regards to the core deliverables, I have considerable proficiency in developing customer mobile apps for both iOS and Android platforms. My expertise also extends to operational web portals for multi-tenant governance and analytics, branch/venue management portal as well as kitchen/staff display system - all functionalities necessary for your project. I am adept at implementing relational databases with role-based access control, secure APIs and integrating WebSocket synchronizations for live status updates that ensure timely order fulfilment. Lastly, I align well with your milestone-based engagement strategy. I am accustomed to delivering verifiable code deployment within stipulated timeframes leading to successful releases. Fundamentally, my approach is centered on providing quality solutions that satisfy clients' needs long-term. Furthermore, you will enjoy having me on board owing to my commitment to maintainable code and effective yet t Thanks! $850 USD in 8 days $1,200 USD in 30 days Hi, You're building a multi-portal ordering and venue operations platform with real-time updates across mobile apps and web portals. Having worked on similar multi-tenant ordering systems, I understand the operational realities: phased rollouts, strict data access, and live sync needs. Recent work included mobile ordering apps and admin dashboards with real-time queues and RBAC. I'd start by validating the current flow against the specs, implement real-time channels and RBAC, and then deliver via milestone-ready increments with end-to-end tests and clear deployment checks. One technical risk / key challenge: Real-time cross-portal state drift can occur if channels are not isolated per tenant. What is the expected latency target for real-time status updates across portals? Do you require separate databases per tenant, or a single shared DB with tenant IDs and strict RBAC? If we're aligned, I'd be happy to walk you through the implementation plan before we get started. Best regards, Brandon $900 USD in 9 days $750 USD in 15 days Greetings! I can build your multi portal ordering and operations platform, including the customer mobile app for iOS and Android, three operational web portals, and a robust backend with real time sync. I would propose React Native for the mobile app, React for the web portals, and Node.js or Python for the backend, with a relational database, role based access, secure APIs, and WebSocket integration. I have experience with similar multi portal ordering systems and can share examples. I can provide a realistic timeline and milestone structure. Let me know your preferred timeline and I can get started. Thanks, Revival $750 USD in 14 days The central challenge is keeping four very different experiences consistent: customer ordering and booking, venue operations, centralized administration, and a KDS that must reflect order changes immediately without duplicating business logic or exposing tenant data across boundaries. I would use a shared, typed API contract across the mobile app and web portals, with the relational model and role permissions enforced in the backend rather than relying on client-side checks. React Native is a practical choice for the iOS and Android customer app, while a component-based React frontend can support the three operational portals with reusable tables, forms, catalog controls, dashboards, and responsive layouts. Server state would remain separate from local UI state so caching, mutations, loading, empty, and error states stay predictable. For real-time behavior, WebSocket events should represent controlled domain changes such as order creation, preparation updates, fulfillment, and booking status changes. I would account for reconnects, duplicate events, stale screens, and refresh fallback so the KDS and customer tracking remain reliable rather than depending on an uninterrupted connection. The main risk is inconsistent state between portals during concurrent updates, so I would de-risk that early through explicit event contracts, backend-owned status transitions, idempotent updates, and permission-focused integration tests. Implementation would be organized into reviewable milestones with deployable code, clean Git history, and repository structure that keeps backend, mobile, and portal concerns maintainable. The supplied Figma designs, database schema, and API specifications can guide implementation closely without introducing unnecessary architectural variation. Could you share the API specifications and authentication details, particularly the expected WebSocket event format and role/tenant permission model, so the integration boundaries can be confirmed before development? $970 USD in 7 days $750 USD in 14 days $1,500 USD in 7 days Hello, Your multi-portal ordering and venue operations platform is a strong fit for structured full-stack delivery. I can contribute to the customer mobile app, operational web portals, secure role-based APIs, relational database implementation, and real-time WebSocket synchronization based on your completed Figma, schema, and API specifications. A useful improvement would be defining shared event contracts early so customer tracking, venue operations, and KDS updates remain consistent across every client. I'm comfortable aligning implementation with milestone-based deployment and Git repository reviews. Please share the technical specifications and access to the relevant Figma/API materials so the architecture and milestones can be mapped accurately. Check our portfolio, https://www.freelancer.com/u/installerpoint Best Regards, Muhammad Adeel $750 USD in 6 days Hi there! I understand you need a senior full-stack engineer to build a multi-portal ordering and venue operations platform with a customer mobile app, admin dashboards, and real-time kitchen operations around your finished Figma, database schema, and API specs. I've spent the last several years solving exactly this type of problem, delivering Mobile App Development, Android App Development, iOS Development, Node.js, Git, and PHP-based systems with secure role-based access, live status updates, and milestone-driven deployments. I'm ready to get started, and I'm confident we can make this project a success and deliver it to a high standard. I'm committed to ensuring everything is completed professionally, efficiently, and exactly according to your requirements. Best regards! $750 USD in 10 days Hi, I've built multi-portal ordering systems with real-time sync, secure APIs, and role-based access. You need iOS and Android customer ordering with table booking plus admin, venue, and KDS portals backed by a relational database and WebSocket updates. I'll follow the Figma and API specs to deliver milestone-ready client apps, portals, and live status workflows. I've shipped similar multi-tenant dashboards and fulfillment screens with dependable deployments and clean Git history. Best, Razmik $1,200 USD in 10 days Hi - Jordan here "REQUESTS HAMAD -- 2" , you need a Multi-Portal Ordering and Venue Operations Platform with a customer mobile app, three operational web portals, and backend real-time sync. I'd map your defined schema and API specs into a single event-driven backend, then wire RBAC, WebSockets, and deployment checks so live status drift never breaks ordering or operations. Each portal and app will carry role boundaries, audit-ready state transitions, and versioned endpoints, with the Figma flows rendered exactly and a first milestone of one working ordering path plus one live KDS queue used as the acceptance test. What is the one status transition that must be atomic across customer, venue, and KDS views? Looking forward to work with you $990 USD in 10 days Hello, Having amassed significant experience as a Senior Full-Stack Engineer, I am well-equipped to bring your Multi-Portal Ordering and Venue Operations Platform to life. My expertise covers the entire tech stack you've mentioned, from Flutter and React Native to Node.js and Laravel. This includes a comprehensive understanding of mobile application development, secure APIs, real-time sync, and more. Throughout my Flutter and React Native journey, I have continuously improved my skills by successfully shipping apps in the healthcare, wellness, fitness, and gaming sectors. My native iOS and Android proficiency has proven critical in ensuring smooth deployment across all platforms for every app. Moreover, my strength in Firebase ensures robust backend development, seamless connectivity enforced through FCM for quick updates on all operational aspects. Other vital skills I offer include an excellent grasp of databases, role-based access control, and WebSocket integration. I've put these skills to good use in previous similar projects like a subscription-based Fitness App on both stores where restore functionality was significantly improved playing a crucial role in its 2.4x growth of paid subscribers over two quarters. In conclusion, choosing me means selecting someone with proven capabilities in designing complex backend systems alongside dynamic frontends - all while prioritizing security and scalability. It'd be great to leverag Thanks! $750 USD in 3 days Hello! I've spent the last several years solving exactly this type of multi-portal ordering and operations problem, and your setup is very clear: Figma done, schema defined, and APIs ready. I can move quickly on the backend, customer app, admin portal, venue portal, and KDS with clean real-time syncing. I would implement a proven stack such as Flutter for iOS/Android, Node.js/NestJS or Laravel for the backend, PostgreSQL for the relational model, and WebSockets for live status updates. My approach would be to map your approved database schema to secure RBAC services, build the multi-tenant admin logic, connect ordering and booking flows, and then wire the live kitchen and staff queues with deployment-ready code reviewed in Git at each milestone. Thanks! $1,200 USD in 8 days Hi, The main challenge with a multi-portal platform like this is that the real-time sync between the customer app, the branch portal, and the KDS needs to be consistent across all layers. If a customer places an order, the KDS should show it immediately, and the branch portal should reflect the updated order status without delays or polling. The WebSocket integration needs to handle reconnections gracefully, and the role-based access control has to ensure that each portal only sees the relevant data. The database schema is already defined, which is a good start, but the API layer needs to be designed with versioning and scalability in mind, especially for future multi-tenant expansion. For the tech stack, I'd recommend React Native for the mobile app to share code between iOS and Android, and Node.js with a relational database (PostgreSQL) for the backend, with WebSocket for real-time updates. Laravel is also a solid choice if you prefer a more structured PHP framework. I'd need to confirm the number of venues expected and the anticipated user load, as that influences the database indexing and caching strategy. I can share links to similar multi-portal or ordering systems I've built. Happy to review the Figma designs and technical specifications once we discuss the approach. $750 USD in 15 days Hi, there. "MULTI-PORTAL ORDERING & VENUE OPERATIONS PLATFORM" - you need one backend connecting the customer app, admin portal, venue operations, and KDS with reliable real-time order status. I'd use Flutter for iOS/Android, React for the web portals, and Node.js/NestJS with PostgreSQL for the backend. I'd keep ordering, bookings, inventory/catalog, tenant management, permissions, and KDS workflows as separate modules, with WebSockets handling live order states. Since Figma, database schema, and API specifications are already prepared, I'd build directly against those contracts and validate each milestone through deployed code and Git review. The key risk is keeping order state consistent across customer, venue, and kitchen screens, so I'd make the order lifecycle explicit and handle reconnects and duplicate events safely. Which part should be delivered first: the backend/API foundation, customer app, or operational portals? Looking forward to working with you. $750 USD in 1 day Jeddah, Saudi Arabia Member since Feb 10, 2026