✨ AI

AI-Powered Contract Review Platform

LexReview

Role: Full-Stack AI Engineer

NestJSNext.jsTypeORMSupabase (PostgreSQL + Storage + Auth)Claude (Anthropic)pdf-parseMammothPDFKitdocxPlaywright

End-to-end AI-driven contract review platform built to eliminate the manual bottlenecks in legal teams' NDA and routine contract workflows — document ingestion, clause extraction, playbook-based risk scoring, and lawyer sign-off. The system automates PDF/DOCX upload and text extraction, intelligent clause splitting, AI risk analysis against firm playbooks, and client-ready report export, letting lawyers focus on judgment calls rather than line-by-line first-pass review. Portals: Lawyer Review Workspace

Project walkthrough

Project Walkthrough

What we built

Built a contract upload pipeline where lawyers upload PDF or DOCX files; text is extracted, files are stored in Supabase Storage, and contracts are persisted with client metadata and contract type (NDA, MSA, Employment, Lease).
Developed an intelligent clause-splitting engine that uses numbered-section and ALL CAPS heuristics first, with a Claude-powered AI fallback when heuristics are not confident, automatically breaking contracts into reviewable clauses.
Implemented a playbook-driven AI risk analysis pipeline where each clause is scored by Claude against seeded playbook rules (acceptable criteria, red flags, severity), returning risk level, reasoning, suggested rewrites, and confidence scores.
Built a full lawyer review workspace with clause-by-clause accept/reject/edit decisions, inline diff view for original vs. suggested text, bulk actions, per-clause and full-contract re-analysis, and a confidence gate that flags low-confidence AI results for mandatory manual review.
Integrated Supabase Auth to protect upload and review routes, with legal disclaimers across the app and exported reports.
Delivered PDF and Word report export summarizing overall risk score, flagged clauses, lawyer decisions, and legal disclaimers, ready for client or internal distribution.

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