Engineering & Contracting: ready template

Build an in-house project management office (PMO) system for a contracting company that runs projects from planning through execution in one place. The system includes a schedule (Gantt) per project with the critical path, a bill of quantities (BOQ) linked to the budget and actual cost, and an indicator dashboard showing progress and variance against schedule and budget (EVM). Add fine-grained roles and permissions (RBAC) for the project manager, the engineer, the accountant and senior management, with secure login, data encryption and an audit log of every change. Make the architecture scalable: a database indexed on project number and date, caching for repeated reports, and task queues (queues) to calculate payment applications and generate heavy PDF files without blocking the interface. The interface is English-first with Arabic RTL support, responsive and fast, with accessibility and monitoring and logs (observability) to catch errors and performance issues. Connect the system to ZATCA e-invoicing to issue compliant supplier and client invoices, and add WhatsApp alerts when the budget is exceeded or a critical stage slips. Make it production-ready: a professional user experience, basic tests, periodic backups and concise operating documentation.

Build an external portal facing the client and the consultant to manage approvals, requests for information (RFIs) and variation orders on contracting projects. The owner or consultant signs into a secure account to review drawings and samples and approve or return them with comments, with a clear workflow for each request (submitted/under review/approved/rejected) and a documented timeline of every step. Add fine-grained permissions (RBAC) separating owner, consultant and contractor, secure login, and an electronic signature for approvals with a full audit log. Make the architecture scale to thousands of external users: a content delivery network (CDN) to display drawings and photos quickly, caching of lists, rate limiting and protection against common attacks, and regular backups. The interface is English-first with Arabic RTL support, simple and clear for non-technical owners, responsive on mobile and accessible. Send WhatsApp and email notifications when a new approval request arrives or a response deadline nears, and add monitoring and analytics to follow response times. Make it production-ready with a professional experience, tests and concise documentation.

Build a central automation engine that ties a contracting company's operations together and runs them automatically without manual intervention. The engine watches events (a contractor payment falling due, a critical task slipping, a new payment application arriving, a material running out, an approval deadline nearing) and triggers the right actions: a WhatsApp/SMS notification to the person responsible, escalation to management when it's late, or generating a draft payment application ready for review. Add configurable rules (if/then) and multi-level approval workflows with fine-grained permissions (RBAC), secure login and an audit log of every automated action. Make the architecture reliable and scalable: task queues (queues) that process thousands of events a day with retries on failure, scheduling for the recurring jobs, caching, and a database indexed on event and date. Connect the WhatsApp, SMS and ZATCA keys securely through the secrets vault without exposing them in the code, with rate limiting and protection against abuse. The interface is English-first for managing rules and reviewing the run log, with monitoring and analytics (observability) showing what succeeded and what failed. Make it production-ready with tests, backups and concise documentation.

Build a field mobile app (Expo) for site supervisors and contractors that works even with a weak or dropped network. From site, the supervisor records: labour clock-in and clock-out, the daily report with completed quantities, photos documented with location and date (geotagged), and safety notes and obstructions. The app must store the data locally when the network drops and then sync it automatically when the connection returns, without loss or duplication, with a clear sync-status indicator. Add roles and permissions (RBAC) separating supervisor, contractor and management, secure login, and linking each entry to its project and task. Make the back end scale to thousands of field users: an indexed API, queues to process photo uploads, a content delivery network (CDN) for media, caching, rate limiting, protection, data encryption and backups. The interface is English-first, simple and fast enough to use one-handed in the sun, and accessible. Push the data live to the management dashboard and send a WhatsApp alert when a safety violation or a stoppage is recorded. Make it production-ready with a professional experience, tests, monitoring and concise documentation.

Build a multi-tenant SaaS platform for contracting management serving hundreds of companies and millions of users on a single horizontally scalable infrastructure. Each company's (tenant's) data must be isolated completely and securely, with fine-grained permissions (RBAC) at both tenant and user level, secure login supporting two-factor authentication and single sign-on (SSO), and an audit log of every operation. Design the database to withstand high loads: precise indexing, partitioning (sharding/partitioning) by tenant or date where needed, multi-layer caching, and task queues (queues) for every heavy operation such as calculating payment applications and generating reports. Add a content delivery network (CDN) for media and files, rate limiting per tenant, protection against common attacks, encryption of data at rest and in transit, and backups with a recovery plan. Make the interface English-first with Arabic RTL support, multilingual and multi-currency, responsive and accessible, with comprehensive monitoring, analytics and logs (observability) to watch performance and errors per tenant. Connect payments (mada/Apple Pay/Moyasar) for subscriptions, ZATCA e-invoicing, and WhatsApp for notifications. Make it production-ready with a professional experience, automated tests and concise technical documentation.