Rajesh Kumar

Full-Stack Developer

New Delhi, India 0+ yrs exp 81 · Excellent

About

Full-Stack Developer who builds scalable web applications and integrates LLM services (OpenAI, Google Gemini) into real products. Proficient in React, Node.js, Express, FastAPI and TypeScript, with solid database design (MongoDB, MySQL, PostgreSQL), RESTful API architecture and secure JWT authentication. Shipped an AI-powered portfolio generator and an end-to-end e-commerce platform, with a focus on performance and clean, maintainable code.

Skills & Expertise (28)

React Intermediate

7.5/10

0.5

Years Exp

Node.js Intermediate

7.0/10

0.5

Years Exp

HTML5 Intermediate

7.0/10

0.5

Years Exp

CSS3 Intermediate

7.0/10

0.5

Years Exp

JavaScript Intermediate

7.0/10

0.5

Years Exp

RESTful APIs Intermediate

7.0/10

0.5

Years Exp

Git Intermediate

6.5/10

0.5

Years Exp

Python Intermediate

6.5/10

0.5

Years Exp

MySql Intermediate

6.0/10

0.5

Years Exp

MongoDb Intermediate

6.0/10

0.5

Years Exp

Postgresql Intermediate

6.0/10

0.5

Years Exp

GitHub Intermediate

6.0/10

0.5

Years Exp

FastAPI Beginner

5.0/10

0.5

Years Exp

JWT Authentication Beginner

5.0/10

0.5

Years Exp

Pydantic Beginner

4.5/10

0.5

Years Exp

Context API Beginner

4.0/10

0.5

Years Exp

Tailwind CSS Beginner

4.0/10

0.5

Years Exp

bootstrap Beginner

4.0/10

0.5

Years Exp

OpenAI API Beginner

3.5/10

0.5

Years Exp

Google Gemini API Beginner

3.0/10

0.5

Years Exp

LLM Integration Beginner

3.0/10

0.5

Years Exp

Prompt Engineering Beginner

3.0/10

0.5

Years Exp

Typescript Express.js Responsive UI Design REDUX Postman Cd pipelines

Work Experience

Technical Support Engineer

Teleperformance

May 2026 - Present

Delivered technical support for WDC US operations, diagnosing complex client queries and troubleshooting web and software issues. Collaborated with cross-functional engineering teams to speed up escalation resolution and maintain SLA benchmarks.

Software Developer Intern

Deeptrlent Technology

Jan 2026 - Apr 2026

Contributed to full-stack feature development and REST API integration for client-facing product modules. Created modular React UI components, improving interface responsiveness and frontend maintainability.