The most significant challenge was designing an information flow that kept contractor submissions completely separate from what clients see until an admin has reviewed and approved them. This required a multi-stage workflow with clearly defined statuses, rejection and resubmission paths, and role-specific visibility rules, all without adding friction for any of the three parties involved. Building a colour-coded project health system that reflected schedule adherence accurately in real time, while also allowing manual admin overrides for situations on the ground, required careful logic design. Document version control added further complexity: it was to ensure that outdated files were replaced cleanly, with no risk of the wrong version reaching a client or contractor. Delivering a fully bilingual experience in both English and Arabic, with proper RTL layout across both the marketing site and the portal, required the language system to be built into the architecture from the start rather than added later. Managing four distinct user roles within a single system, each with its own permissions, views, and workflow interactions, also required a modular and well-structured access control approach.