Guru Prasath

Software Engineer

Xerago

Jul 2025 - Present

Built an offline-first React Native (Expo) app for field sales agents, using SQLCipher-encrypted SQLite across 24 schema migrations for offline master-data caching. Implemented a sync engine with an outbox pattern (upload/download cursors, retries, dead-letter handling) triggered on reconnect, foreground, and login for reliable sync over unstable networks. Developed a 5-step deal-creation wizard using Zustand state management with debounced autosave and draft resume, supporting multi-brand pricing, bonus, and ROI workflows. Engineered TypeScript domain logic for pricing, tier/bonus resolution, tax computation, and ROI/breakeven calculations, validated with Vitest, and secured offline data with AES-GCM encryption and SSL pinning. Re-architected a legacy marketing site into a Docusaurus-based enterprise web platform, lifting Lighthouse scores from 50 to 90+ and improving SEO across all pages. Designed a three-layer content pipeline (Markdown → JSON → React) with 45+ reusable components, enabling content teams to publish and update pages independently of developers. Engineered a Chrome Extension (MV3) in TypeScript replicating Adobe Experience Platform and Omnibug for enterprise analytics debugging. Delivered cross-tab request capture, SPA route-change detection, and real-time payload comparison for tracking validation. Developed 8+ production REST APIs in Node.js and Express with rate limiting, Google reCAPTCHA, and secure SMTP handling, eliminating spam across client campaigns.