I need a production-ready, full-stack web application that mirrors every public-facing screen and interaction on cleartax.in. Pixel-perfect parity in both desktop and mobile views is essential because I want users to feel they are on the same platform they already trust, just under my brand. Core product flow • Self ITR filing • Expert-assisted ITR filing • GST filing Users must be able to start, pause, and complete any of these filings with a single-click submission to the respective government portals, fully compliant with current Indian Income-Tax and GST laws. Automatic calculation of tax liabilities, deductions, late-fee computations, and real-time validation against government schemas should run in the background so the user only sees a smooth progress bar. Authentication & security • Email + password login • OTP-based verification (mobile and email) • Social media sign-in (Google, Facebook) Account data, PAN/Aadhaar information, and uploaded documents must be encrypted at rest and in transit. Please incorporate role-based access controls for the consumer dashboard, CA/expert dashboard, and admin panel. Technology expectations Replicate the snappy React+Node experience cleartax delivers, or propose an equivalent modern stack that can handle high concurrency during filing season. CI/CD, automated testing, and containerised deployment to AWS or GCP will keep releases predictable. Acceptance criteria 1. UI/UX is indistinguishable from cleartax.in on the latest Chrome, Firefox, and Safari. 2. All three filing journeys end in successful e-filing receipts on the sandbox, then live government APIs. 3. Auth methods function independently and fail gracefully. 4. Full source code, build scripts, and environment docs are handed over for my internal DevOps team to take forward. If you have built fintech, RegTech, or large-scale form automation tools for India, your experience will be immediately relevant.