Hi, I'm Kuldeep Singh Negi
I am a

About me

I'm Kuldeep and I'm a

Passionate and results-driven Backend Developer with 2 years of professional experience delivering backend solutions for high-impact government projects. Proficient in JavaScript, Node.js, MongoDB, SQL with strong foundations in REST API development, backend architecture, and secure authentication systems. Adept at writing clean, testable code, integrating third-party APIs, and collaborating cross-functionally with product, frontend, and QA teams.

Work Experience

Backend Developer

Quartech Private Limited

June 2025 - December 2025

Worked as a Backend Developer at a product-based company, specializing in building scalable and efficient backend systems.

  • Developed multiple RESTful APIs using TypeScript and Node.js for robust backend solutions
  • Implemented gRPC calls for inter-service communication, replacing traditional API calls to improve performance and efficiency
  • Optimized numerous APIs to enhance system performance, reduce latency, and improve overall application responsiveness
  • Wrote comprehensive test cases to ensure code quality, reliability, and maintainability
  • Collaborated with cross-functional teams to deliver high-quality backend services in a product-driven environment

Backend Developer

Moneymul Technologies Pvt. Ltd. - Noida, India

March 2024 - June 2025

Project: eSign Pro - A government eSign platform enabling Aadhaar-based digital document signing.

  • Built and maintained RESTful APIs consumed by the frontend
  • Created critical systems: webhook handling, low balance alert, notification triggers, and invoice generation
  • Wrote unit and integration tests using Mocha to ensure API reliability and stability
  • Optimized backend logic, integrated third-party APIs, and supported deployment on UAT and production servers
  • Authored technical documentation to help clients understand system architecture and logic
  • Collaborated cross-functionally: reviewed merge requests, translated requirements into actionable tasks, and guided frontend/backend teams

Project: PAN 2.0 Dashboard - A dashboard solution for managing PAN application workflows and analytics (Delivered for Government Review).

  • Developed and maintained backend APIs and wrote test cases using Mocha
  • Reviewed code (MRs), gathered requirements, and coordinated implementation across teams
  • Integrated Razorpay API for payment processing
  • Created and maintained Swagger API documentation for backend endpoints
  • Enforced high code quality using ESLint and XO, achieving an "A" grade in SonarQube
  • Implemented RBAC (Role-Based Access Control) using Casbin
  • Managed authentication and authorization using Keycloak for secure access control

Project: PAN POC - A lightweight demo application for showcasing simplified PAN workflows (Proof of Concept).

  • Developed core backend APIs and participated in code reviews
  • Assisted peers in refining logic and improving backend efficiency

Technical Skills & Tools

Technical Skills

HTML

HTML

CSS

JavaScript

JavaScript

Node.js

Node.js

Express.js

Express.js

MongoDB

MongoDB

Socket.io

Socket.io

MySql

MySQL

Tools

GitHub

GitHub

VS Code

VS Code

Thunder Client

Thunder Client

PostMan

Postman

Git

Git

Projects

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DentDesk Clone

Dent Desk is a feature-rich dental appointment booking system with authentication, authorization, RBAC, user scheduling, doctor approval, admin management, advanced filtering, backend development, appointment tracking, responsive design, and automated email notifications via Nodemailer.

Tech Stack: NodeJS | ExpressJS | JavaScript | MongoDB | Nodemailer | HTML | CSS
Live   Git Repo  
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Desk Time Clone

DeskTime is the ultimate productivity companion, empowering individuals and teams to unlock their full potential. With its powerful time tracking, insightful analytics, and intelligent activity monitoring, DeskTime revolutionizes the way you work and helps you achieve your goals with precision and efficiency.

Tech Stack: HTML | CSS | JavaScript | ExpressJS | MongoDB | Socket-io
Live   Git Repo  
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SurveyMonkey Clone

SurveyMonkey offering a user-friendly platform for creating, distributing, and analyzing surveys. With its robust features and customizable templates, SurveyMonkey empowers individuals and organizations to gather valuable feedback and make informed decisions.

Tech Stack: HTML | CSS | JavaScript | NodeJs | ExpressJS | MongoDB
Live   Git Repo  
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Doller Tree Clone

Introducing my Dollar Tree Clone, an E-Commerce website where you can browse and shop from a wide selection of products, all priced at just $1 each.

Tech Stack: HTML | CSS | JavaScript
Live   Git Repo  
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Rentomojo-clone

Introducing RentMojo Clone, an innovative online rental platform that offers customers the convenience of renting furniture, appliances, and household items.

Tech Stack: HTML | CSS | JavaScript | JSONServer
Live   Git Repo  

Contact me