Chirag Sonar
Product Minded Engineer | Frontend | MERN | UI UX
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ContractSPAN
Contract Lifecycle Management and Business Intelligence Platform
Built and maintained the frontend for a CLM platform serving 320+ users across 5 enterprise clients. The platform handles the full contract lifecycle, from drafting to e-signature and approval, with role-based workflows supporting multiple user personas.
Key contributions include a custom PDF field-mapping system for deterministic signature placement, a rich document template editor built on Meta's Lexical framework, and a full e-signature system with audit trails and multi-role approval flows. Also integrated AI-powered contract drafting and LLM-based PDF chat features.
Improved Lighthouse performance scores from 45% to 99%+ and reduced Time to Interactive by 45% through code-splitting, lazy loading, and optimised state management.
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Unstuck is an AI-powered legal clarity tool built for founders and individuals caught in unfair or confusing contracts. The goal was to help users understand their options, identify leverage points, and decide their next move without needing a lawyer.
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LexStack is an open-source legal AI infrastructure platform providing plug-and-play building blocks for teams building citation-aware, grounded legal AI systems. The goal was to eliminate the overhead of stitching together PDF parsing, vector search, chat history, and evaluation pipelines from scratch.
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