Kaustubh Pawar

Frontend Software Engineer (React)

Nashik,India $30/hr Hybrid Full-time 0+ yrs exp 87 · Excellent

About

Software Engineer with hands-on experience in designing and developing scalable full-stack web applications using the MERN stack. Proficient in React.js, Node.js, Express.js, MongoDB, JavaScript, and TypeScript, with a strong understanding of RESTful APIs, database design, authentication, and responsive UI development. Experienced in building end-to-end applications, collaborating with teams using Git, and writing clean, maintainable, and efficient code. Passionate about solving real-world problems, continuously learning modern technologies, and delivering high-quality software solutions. Seeking opportunities to contribute to innovative engineering teams while growing as a Full Stack Software Engineer.

Skills & Expertise (33)

HTML5 Advanced

7.0/10

Years Exp

CSS3 Advanced

7.0/10

Years Exp

ES6+ Advanced

7.0/10

Years Exp

JavaScript Advanced

7.0/10

Years Exp

Node.js Intermediate

6.5/10

Years Exp

Express.js Intermediate

6.5/10

Years Exp

JWT Authentication Intermediate

6.5/10

Years Exp

React.js Intermediate

6.5/10

Years Exp

MongoDb Intermediate

6.5/10

Years Exp

REST API design Intermediate

6.3/10

Years Exp

Role-based access control Intermediate

6.0/10

Years Exp

NPM Intermediate

6.0/10

Years Exp

VS Code Intermediate

6.0/10

Years Exp

Postman Intermediate

6.0/10

Years Exp

GitHub Intermediate

6.0/10

Years Exp

Git Intermediate

6.0/10

Years Exp

Axios Intermediate

6.0/10

Years Exp

bootstrap Intermediate

6.0/10

Years Exp

Middleware Intermediate

6.0/10

Years Exp

Mongoose Intermediate

6.0/10

Years Exp

Context API Intermediate

6.0/10

Years Exp

Tailwind CSS Intermediate

5.5/10

Years Exp

Vercel Intermediate

5.5/10

Years Exp

Netlify Intermediate

5.5/10

Years Exp

AWS S3 Intermediate

5.5/10

Years Exp

AWS EC2 Intermediate

5.5/10

Years Exp

REDUX Intermediate

5.5/10

Years Exp

SQL Intermediate

5.5/10

Years Exp

Typescript Intermediate

5.5/10

Years Exp

Postgresql Intermediate

5.5/10

Years Exp

MySql Intermediate

5.5/10

Years Exp

Socket.IO Intermediate

5.0/10

Years Exp

Python Intermediate

5.0/10

Years Exp

Work Experience

Software Developer Intern

Sumago Infotech Pvt. Ltd

Aug 2025 - May 2026

Engineered and maintained 15+ RESTful API endpoints across multiple modules using Node.js, Express.js, and MongoDB, implementing full CRUD operations validated through Postman; resolved defects surfaced in code review to improve API reliability. Architected normalized MongoDB schemas for 8+ application modules and wrote optimized aggregation queries for multi-collection data operations; integrated REST APIs into React.js components with dynamic form handling and centralized state management, and built a reusable UI component library to reduce duplicate UI code across modules. Implemented JWT-based authentication with role-based access control (Admin, Editor, Viewer) via Express.js middleware, securing all protected API routes; debugged and resolved token-validation edge cases and enforced authorization across 3 permission tiers within a modular routing architecture. Built responsive React.js pages with real-time API integration and global state management via Context API; resolved UI rendering and API integration defects identified during code review and QA cycles to support on-time releases across sprint cycles.