Zero-Dependency Excel Engine

Custom-built spreadsheet computation engine with regex tokenizer and topological dependency resolution.

Tech Stack

What Was Built

• Built a zero-dependency custom Excel-like computation engine to eliminate reliance on legacy spreadsheet workflows.
• Implemented a regex-based tokenizer and a dependency graph with topological sort for stale-free recalculation of dependent cells.
• Supported dynamic custom variables with automatic propagation of updates across 300+ rows × 20 columns of interdependent financial data.
• Designed the engine to plug into the admin panel as a modular computation layer for freight rate calculations, P&L projections, and insurance costing.