Full Stack Engineer with 4.5+ years building production systems in React, Node.js, and TypeScript.

Most recently I architected backend services for a real-time credit data platform integrated with Equifax and Experian — cutting API response times by ~25% through query tuning, connection pooling, and response caching.

I own full product cycles: REST API design, database schema (MySQL + MongoDB), JWT-based auth with RBAC, and React dashboards with Redux Toolkit + RTK Query.

Currently focused on:

• 📚 Deep diving into DSA and System Design — targeting SDE II at product companies
• 🔧 Open source contributions — actively contributing to Payload (42.5k+ ⭐)
• 🏗️ Building side projects that solve real problems

Frontend

Backend

Databases

Tools & Infra

Node.js · Express · MySQL · MongoDB · React · Redux Toolkit · JWT

Production fintech platform integrating Equifax & Experian APIs for real-time credit data processing.

• Reduced API response times ~25% via query tuning, connection pooling, and response caching
• Designed secure REST APIs with input validation, RBAC, and structured error handling
• Built React admin dashboard with Redux Toolkit + RTK Query — eliminated redundant API calls
• Architected MySQL + MongoDB schemas for read-heavy financial data workflows

Node.js · Express · MongoDB · React · Redux Toolkit

E-commerce platform for digital assets with full subscription lifecycle management.

• Built complete subscription APIs — create, pause, cancel, renew
• Implemented secure content delivery and access control
• Optimised frontend state management and lazy loading for cross-device performance

Angular · TypeScript · REST APIs

Enterprise transit management system for a North American client.

• Built reusable Angular component library adopted across multiple feature teams
• Reduced production bugs 15% through component-level unit testing
• Optimised frontend rendering for high-data-volume real-time views

DSA Progress    ████████░░░░░░░░░░░░  Phase 1 of 5
System Design   ██░░░░░░░░░░░░░░░░░░  Starting Week 8
Mock Interviews ░░░░░░░░░░░░░░░░░░░░  Starting Week 12
Target          Microsoft India · Google India · Product Companies
Timeline        September 2026

I'm actively looking for SDE II roles at product-first companies — fintech, developer tools, or high-scale consumer products.

Open to: Bengaluru · Hyderabad · Remote

📩 rajibgupta003@gmail.com · LinkedIn

_{Profile views:}