React & Node.js Full Stack Developer for Food Ordering Platform

# RailBite – Railway Food Ordering and Seat Delivery Platform RailBite is a modern, scalable, web-based railway food ordering and delivery platform designed specifically for passengers travelling on Indian trains. The platform aims to transform the food experience during railway journeys by allowing passengers to discover verified restaurants located near railway stations, browse restaurant menus, place food orders in advance, make secure payments, and receive freshly prepared meals directly at their train seat at a selected station along their journey. The primary purpose of RailBite is to solve the common food-related problems faced by railway passengers, including limited food choices, inconsistent food quality, lack of hygienic meal options, dependency on pantry car food, cash-based transactions, lack of pre-ordering facilities, and the difficulty of purchasing food during short station halts. RailBite acts as a digital marketplace connecting railway passengers, verified restaurant partners, and the RailBite platform operations team. The system coordinates the complete food ordering lifecycle from train or PNR search to restaurant discovery, menu browsing, cart management, checkout, payment, restaurant order processing, station delivery, order tracking, customer support, refunds, ratings, and reporting. The vision of RailBite is to become a trusted food discovery and delivery platform for railway travellers in India by making every train journey more convenient and enjoyable. The platform focuses on accessibility, trust, reliability, scalability, food safety, and regulatory compliance. ## Customer Experience The RailBite customer-facing web application provides railway passengers with a simple and responsive food ordering experience. Passengers can begin their ordering journey by entering their PNR number or train number. The system validates the journey information and retrieves relevant train details, journey dates, boarding stations, and scheduled station stops. After confirming the journey, passengers can select an eligible delivery station along the train route. RailBite determines whether food delivery is possible based on train timing, restaurant availability, station coverage, restaurant working hours, advance ordering requirements, and the minimum delivery window. Once a delivery station is selected, passengers can discover restaurants capable of delivering food at that station. Restaurant listings can be searched and filtered using information such as cuisine type, vegetarian or non-vegetarian food availability, restaurant rating, and operational availability. Each restaurant has a detailed profile containing restaurant information, cuisine types, ratings, working hours, delivery information, minimum order value, and available menu items. Passengers can browse menu categories and food items, view prices and food information, and add products to their cart. Where supported, menu items can include customization options such as sizes, add-ons, extras, and special preparation notes. The shopping cart provides a complete order summary containing selected items, quantities, pricing, taxes, delivery fees, discounts, and the final payable amount. Before checkout, passengers provide their coach and seat information so the restaurant or its delivery representative can coordinate station-to-seat food delivery. Passengers may apply eligible coupons and promotional discounts according to RailBite coupon rules. Guest users can browse the platform and view restaurant menus, but authentication is required before an order can be placed. ## User Authentication and Account Management RailBite provides secure passenger registration and authentication. New passengers can register using their name, mobile number, email address, and password. Mobile verification is completed using an OTP verification process. Registered passengers can log in using supported credentials and receive secure authentication tokens. The platform supports JWT-based authentication with access and refresh token strategies. Users can manage their personal profiles and food preferences. RailBite may store dietary preferences such as vegetarian, vegan, Jain, diabetic-friendly, or other supported preferences to improve the food discovery experience. Users can view their previous orders, track active orders, download invoices, manage relevant account information, submit ratings, and create support requests. Password recovery and reset flows are supported through secure, time-limited verification mechanisms. ## Train and PNR-Based Food Discovery Train journey context is a core part of the RailBite ordering experience. Passengers can search using a valid PNR number or train number. The system integrates with an approved railway data provider to obtain train and journey information. RailBite uses train schedules and station stops to determine the stations available for food delivery. Delivery stations must occur after the passenger's boarding station. The system validates delivery eligibility using the scheduled arrival time of the train and the configured food preparation and delivery requirements. A minimum delivery window is enforced to ensure restaurants have sufficient time to accept, prepare, and dispatch orders. Train delay information may affect active orders. When significant train delays occur, the platform can notify relevant restaurant partners and flag affected orders for operational review. The platform architecture is designed to support external railway APIs while maintaining clear provider abstractions so railway data integrations can be replaced or extended when necessary. ## Restaurant Discovery RailBite connects passengers with verified restaurants and cloud kitchens operating near supported railway stations. Only approved and operational restaurant outlets are displayed to passengers. Restaurant availability is determined using station coverage, restaurant working hours, special holiday schedules, order acceptance settings, delivery windows, and restaurant operational status. Passengers can search restaurants by name and filter restaurant listings based on cuisine and dietary preferences. Restaurant results can be ranked using relevant platform criteria such as ratings and availability. Restaurants with insufficient rating history can be displayed as new platform partners rather than showing potentially misleading aggregate ratings. Each restaurant outlet is associated with one or more supported railway delivery locations according to the approved platform configuration. ## Restaurant Partner Management RailBite provides operational capabilities for managing restaurant partners. Restaurant partners are subject to a structured onboarding and approval process. Restaurant onboarding includes business information, restaurant details, food safety documentation, GST information, bank account information, menu information, store images, and supported station delivery information. A valid FSSAI licence is required before a restaurant can become active on the platform. Restaurant compliance information is reviewed by authorised RailBite administrators. Restaurants can be approved, rejected, suspended, or deactivated according to platform rules. Rejected restaurant applications include reasons so the restaurant can address identified issues and resubmit where allowed. Restaurants can configure working hours, special closure dates, minimum order values, delivery fees, supported cuisines, station delivery coverage, and operational settings. Restaurant menu management supports categories and menu items. Menu items can include names, descriptions, pricing, images, dietary information, availability, and supported customization options. Restaurant managers can manage restaurant operations, while restaurant staff may receive restricted permissions for order processing. ## Cart and Checkout RailBite provides a structured shopping cart and checkout process. Each order can contain food from only one restaurant. The cart maintains selected menu items, quantities, customization information, special notes, and calculated pricing. Server-side validation is performed before an order is created. The backend validates menu availability, current prices, restaurant operational status, minimum order requirements, delivery eligibility, train timing, station information, coupon eligibility, and order totals. The backend is the authoritative source for pricing calculations. Client-provided totals are never trusted as the final payment amount. The checkout process includes passenger information, journey information, selected delivery station, coach and seat details, restaurant details, cart items, coupon information, pricing breakdown, and selected payment method. ## Order Management RailBite manages the complete lifecycle of railway food orders. Orders are created using a controlled state transition workflow. An order may move through states including pending payment, payment failed, order placed, restaurant notified, restaurant accepted, restaurant rejected, preparing, ready for pickup, out for delivery, delivered, disputed, cancelled, refund initiated, refunded, and completed. Order status transitions are governed by platform business rules. Restaurants must respond to new orders within the configured acceptance period. If a restaurant rejects an eligible prepaid order, the platform initiates the required refund workflow. Restaurants can update the preparation status of accepted orders. When food is dispatched for delivery, the order moves into the appropriate delivery state. Delivery confirmation can be provided by the restaurant or handled by configured system rules. Passengers can track the current state of their active orders. The platform maintains an order status history to support customer visibility, support investigations, operational monitoring, and auditing. Administrators can intervene in eligible orders when operational problems occur. Administrative order cancellation requires an appropriate reason. ## Payments RailBite supports secure digital payment processing using an external payment gateway. The platform is designed to support Indian payment methods including UPI, cards, net banking, and supported digital wallets. Cash on Delivery may be available when both the restaurant and order satisfy platform COD requirements. All Phase 1 financial transactions are processed in Indian Rupees. Raw card information is never stored on RailBite servers. Payment processing is delegated to a PCI-DSS-compliant payment gateway. The backend validates orders before initiating payment. Payment gateway callbacks and webhooks are verified securely. Payment success is confirmed using trusted server-side gateway events. Duplicate payment attempts are controlled using idempotency mechanisms. Payment records maintain the necessary transaction references, order relationships, statuses, and operational metadata. The platform supports payment failure handling and reconciliation workflows. ## Refund and Cancellation Management RailBite implements controlled cancellation and refund rules. Refund eligibility depends on the current order state, cancellation initiator, restaurant acceptance status, preparation status, and applicable business policies. Orders cancelled before restaurant acceptance may qualify for a full refund according to platform rules. Restaurant-rejected prepaid orders trigger a full refund workflow. Orders cancelled after restaurant acceptance may be subject to partial refund rules. Orders already under preparation may not qualify for passenger-initiated refunds. Administrative cancellations caused by operational failures can trigger full refunds. Refunds for online payments are processed to the original payment method through the configured payment gateway. COD refund scenarios may use platform credits according to the approved business rules. Higher-value disputed refunds require elevated administrative approval. All cancellation and refund operations maintain reason information and audit history. ## Coupons and Promotions RailBite supports promotional coupons and discounts. Coupons may be platform-wide, restaurant-specific, or targeted to eligible user segments. Coupon validation considers activation status, validity dates, minimum order values, applicable restaurants, user eligibility, and usage limits. Per-user coupon usage restrictions are enforced across qualifying orders. Coupon usage information is maintained according to order completion and refund rules. The platform prevents invalid or expired coupons from affecting checkout calculations. All discount calculations are validated by the backend. ## Real-Time Order Tracking and Notifications RailBite keeps passengers informed throughout the order lifecycle. Important order events can trigger in-app, SMS, and email notifications. Notifications may include order confirmation, restaurant acceptance, preparation updates, dispatch information, delivery confirmation, payment failure, cancellation, and refund information. Mandatory transactional notifications are separated from promotional communication. Promotional SMS and email communication require appropriate passenger consent. Notification templates are centrally managed and version controlled. Failed notifications can be retried according to configured rules and escalated to platform operations when required. The architecture supports event-driven notification processing so external communication does not unnecessarily block core order operations. ## Ratings and Reviews Passengers can rate restaurants after confirmed food delivery. Ratings are linked to completed orders to reduce fraudulent reviews. A rating can only be submitted within the permitted rating window. Restaurant aggregate ratings are calculated according to platform rules. Newer ratings may receive additional weighting when determining restaurant performance. Restaurants with insufficient ratings can be marked as new platform partners. Review content is subject to moderation rules. Potentially inappropriate content or personal information can be flagged for administrative review. ## Customer Support RailBite includes a structured support ticket system. Passengers can create support tickets related to orders, payments, refunds, invoices, accounts, or other supported categories. Support tickets include descriptions and may include supported file attachments. Tickets can be assigned to support executives. Support executives can view relevant order information and ticket history. Ticket communication is logged for operational visibility. Support requests can be escalated when they exceed the authority of the assigned support executive. Refund operations initiated through support remain subject to role-based approval limits. Closed support tickets may be reopened within the permitted period where the issue continues. Customer satisfaction feedback can be collected after ticket closure. ## Admin Panel RailBite includes a dedicated administrative application for platform operations. The admin panel provides a centralized view of the entire RailBite ecosystem. Authorized administrators can monitor orders, users, restaurant partners, payments, refunds, support tickets, platform content, notifications, reports, and operational alerts. The administrative dashboard provides business and operational metrics such as daily orders, gross merchandise value, active restaurants, order success rates, pending support tickets, user growth, restaurant performance, and order volume trends. The dashboard includes operational alerts for failed payments, order timeouts, flagged reviews, and pending restaurant approvals. Administrative access is controlled using role-based access control. Different administrative and operational roles receive only the permissions required for their responsibilities. Sensitive administrative actions are recorded in audit logs. ## User and Role Management RailBite supports multiple system roles. Passenger users access the customer-facing application. Guest users can access supported public browsing functionality. Restaurant managers manage their assigned restaurant operations. Restaurant staff can process orders according to restricted permissions. Support executives manage customer and restaurant support requests within their authority limits. Administrators manage platform-wide operational functionality. Super Administrators have the highest level of platform control. The platform uses role-based access control to enforce authorization. Permissions are validated by the backend rather than relying only on frontend visibility. ## Reports and Analytics RailBite provides reporting and analytical capabilities for platform administrators. Reports can cover order volumes, revenue, restaurant performance, customer activity, cancellation rates, refund activity, and operational trends. Administrative dashboards can use aggregated platform data to display current operational health. Reports support configurable date ranges. Where supported, reports can be exported in formats such as CSV or PDF. Large reporting operations should be processed asynchronously where required to protect API performance. Analytics data must remain consistent with the underlying transactional records. ## CMS and Platform Content RailBite administrators can manage selected customer-facing platform content. CMS capabilities may include FAQs, banners, promotional content, and platform announcements. Administrative content updates must follow appropriate access control rules. Platform content is separated from core transactional business logic. ## Security Security is a core requirement of the RailBite platform. The backend uses secure HTTP headers, controlled CORS configuration, API rate limiting, structured input validation, centralized error handling, and secure environment configuration. Passwords are hashed using an approved password hashing mechanism. JWT-based authentication is used for protected APIs. Refresh token mechanisms support secure session management. Role-based access control protects restricted platform functionality. Sensitive secrets are stored using environment configuration and are never hardcoded in source code. Production error responses do not expose internal stack traces. Application logs use structured logging and request identifiers to support debugging and incident investigation. Raw payment card data is never stored by RailBite. The system is designed to comply with relevant PCI-DSS responsibilities through payment gateway tokenization. The platform also considers Digital Personal Data Protection Act requirements for personal data processing, user consent, and data management. ## Food Safety and Regulatory Compliance Restaurant food safety verification is mandatory. Restaurant partners must provide valid FSSAI information before activation. GST information is required according to applicable platform and restaurant invoicing requirements. Invoices must follow applicable GST requirements. Restaurant compliance information must remain available for administrative review. Restaurants with compliance violations can be suspended instead of permanently deleted so platform history and audit information are preserved. ## Technical Architecture RailBite is implemented as three independently maintained applications. The RailBite Backend is a Node.js, Express.js, and TypeScript REST API. MongoDB Atlas is used as the primary managed database. Mongoose is used for MongoDB data access and schema management. The backend follows a structured architecture with clear separation between domain logic, application use cases, infrastructure integrations, presentation controllers and routes, and shared cross-cutting utilities. The backend uses centralized configuration, validated environment variables, structured Winston logging, request identifiers, standardized API responses, centralized error handling, Zod request validation, API rate limiting, security middleware, and Swagger/OpenAPI documentation. The RailBite Customer Frontend is a React and TypeScript web application designed for railway passengers. The frontend is responsive-first because Phase 1 does not include native mobile applications. The application provides the complete customer journey from train search to restaurant discovery, food ordering, checkout, payment, order tracking, order history, ratings, invoices, and support. The RailBite Admin application is a React and TypeScript administrative dashboard. The admin application provides platform operations, restaurant management, order monitoring, user management, financial visibility, support management, reporting, analytics, CMS functionality, RBAC, and audit visibility. The backend acts as the unified REST API for the customer frontend and administrative application. ## Database MongoDB Atlas is the primary data storage platform for RailBite. The database stores platform entities such as users, authentication information, restaurants, restaurant outlets, station relationships, menu categories, menu items, carts, orders, payments, refunds, coupons, reviews, support tickets, notifications, administrative configuration, and audit records. Database design must support efficient railway station and restaurant discovery. Indexes are required for frequently accessed and filtered fields. Order and payment records require strong consistency at the application level. Financial operations must use appropriate atomic updates or transactions where multiple related records are modified. Soft deletion should be used where historical and audit information must be retained. MongoDB Atlas provides managed database infrastructure, monitoring, replication, and backup capabilities appropriate for the RailBite platform. ## API Design The RailBite backend exposes versioned REST APIs. API endpoints use a consistent response structure containing success status, message, data, errors, and metadata. Request validation occurs at the presentation boundary. Controllers are responsible only for HTTP request and response handling. Application use cases coordinate business workflows. Domain rules remain independent from infrastructure-specific implementations. Infrastructure adapters provide database and third-party service implementations. The architecture uses constructor-based dependency injection and a centralized composition root for dependency wiring. API documentation is maintained using Swagger and OpenAPI. Pagination is required for large list endpoints. Protected endpoints require authentication and authorization. Administrative APIs enforce backend role and permission checks. ## External Integrations RailBite is designed to integrate with railway data providers for PNR validation, train schedule information, and station stop data. Payment processing is handled through an approved payment gateway such as Razorpay. SMS communication can be integrated through providers such as MSG91 or Twilio. Transactional email can be delivered through supported email providers. Media files and generated invoices can use managed object storage such as AWS S3. Static assets may use CDN infrastructure when required. External providers must be abstracted behind application interfaces where practical so the platform is not unnecessarily coupled to a single vendor. ## Reliability and Performance RailBite must remain reliable during peak railway travel periods. The architecture is designed to support simultaneous ordering activity across multiple railway stations. API operations should use efficient MongoDB queries and appropriate indexes. Pagination must be used for large datasets. Long-running work should not block HTTP request processing. External API failures must be handled gracefully. Payment callbacks must support idempotent processing. Order status transitions must be validated. Application errors must be centrally logged. Database connections must support graceful startup and shutdown. Health monitoring endpoints provide visibility into application and database health. The platform should be capable of scaling as RailBite expands from an initial pilot corridor to additional routes and stations. ## Business Model RailBite operates as a railway food ordering marketplace. The platform generates revenue primarily through commission charged on eligible restaurant orders. Restaurant subscription models may also be supported according to business strategy. The platform provides restaurant partners with access to railway passengers who may otherwise have limited awareness of local food options near their journey stations. For passengers, RailBite provides convenience, food choice, hygiene assurance, digital payments, transparent pricing, order tracking, and structured customer support. ## Phase 1 Scope RailBite Phase 1 focuses on a production-ready web platform. The primary deliverables are: Customer Web Application. Administrative Panel. Unified REST API Backend. MongoDB Atlas database integration. Passenger authentication. Train and PNR search. Station-based restaurant discovery. Restaurant and menu management. Cart and checkout. Online payment and eligible Cash on Delivery. Order lifecycle management. Order tracking. Notifications. Refund and cancellation workflows. Coupons. Ratings and reviews. Customer support. Administrative operations. Reports and analytics. CMS functionality. Role-based access control. Audit logging. Security and compliance foundations. Native mobile applications are not included in Phase 1. A dedicated delivery partner application is not included in Phase 1. Real-time GPS delivery tracking is not included in Phase 1. AI-powered recommendations, loyalty programs, group ordering, vernacular language support, and other future expansion features must not be implemented as part of the Phase 1 MVP unless the product requirements are formally updated. ## Product Goal RailBite's goal is to make railway food ordering simple, reliable, safe, and predictable. A passenger should be able to enter their train or PNR information, identify eligible food delivery stations, discover trusted restaurants, select food according to their preferences, complete checkout securely, and receive a fresh meal at their seat without leaving the train. At the same time, restaurant partners gain a digital sales channel for railway passengers, while RailBite administrators receive the tools required to monitor platform operations, restaurant compliance, orders, payments, refunds, customer support, and business performance. RailBite is not intended to be a generic food delivery application. It is a railway journey-aware food ordering platform where train schedules, station stops, restaurant delivery capabilities, passenger seat information, preparation windows, and railway operational conditions directly influence food ordering and delivery. The system must preserve this railway-specific context throughout its architecture, APIs, database design, customer experience, administrative operations, and future development. The final RailBite platform should provide a secure, scalable, maintainable, and production-ready foundation capable of supporting an initial railway corridor pilot and future expansion across India's railway network.