Ritik S. - Fullstack Engineer

Jersey City, United States

Experience

Aug 2025 - Oct 2025

3 months

Architected end-to-end QuickBooks integration for 10+ financial entities using OAuth 2.0, implementing a three-tiered sync strategy: real-time webhook processing, scheduled CDC via nightly cron jobs, and manual refresh, all orchestrated through AWS SQS queues with dedicated worker processes handling 1,000+ daily sync operations
Built full-stack financial management platform with React/TypeScript/MUI frontend and Django REST backend featuring role-based access control, JWT authentication, SendGrid email integration, and advanced data filtering (trigram similarity search, date/amount ranges, multi-field sorting) with server-side pagination across all entity views
Developed AI-powered business insights system leveraging LLM workflows to detect supplier concentration risks and overstock patterns, analyzing vendor spend distribution, inventory velocity metrics, and capital allocation to generate actionable recommendations with urgency-based prioritization

Jul 2025 - Aug 2025

2 months

New York, United States

Architected enterprise-grade authentication system using React 19, TypeScript, Redux Toolkit, and React Router 7 with JWT token management, automatic refresh handling via Axios interceptors across 10+ API endpoints, and secure cookie-based persistence implementing master-only login flow
Designed and implemented centralized Redux state management architecture migrating from local React state to establish single source of truth with memoized selectors handling authentication, email management, client data caching, and UI state across 20+ components
Built reusable component library translating Figma designs into a comprehensive design system featuring DataTable with pagination, React Toastify notifications, composition-based page layouts, and custom Tailwind CSS styling system across 15+ application pages

May 2025 - Present

7 months

Built contact discovery system with privacy controls using React Native Contacts API and Supabase edge functions, implemented branch.io deep linking for invite tracking and conversions, designed weighted scoring analytics with PostgreSQL schema for tracking product interactions and recommendation algorithms
Implemented OAuth2 Google Calendar sync for automated occasion reminders with real-time Supabase sync, developed centralized priority queue system preventing UI conflicts with feedback collection using idle detection and smart cooldowns
Fixed critical email verification and UI bugs, optimized contact list with alphabetical navigation, integrated recommendation algorithms for personalized user experiences using React Native, PostgreSQL, Supabase, and Zustand