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Patna, India  ·  Software Developer

Crafting

Where clean architecture meets real-world impact.

Building reliable systems and sharp interfaces — from broker integrations at Smallcase to real-time collaborative tools. Knight on LeetCode. Currently shipping at scale.

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Kumar Harsh
Kumar Harsh  ·  Software Developer

About

"I don't just write code that works. I write code that lasts."

// KUMAR HARSH

Final-year CSE student at LNMIIT, currently working as a Backend Developer Intern at Smallcase — building API integrations with broker platforms using Node.js, Kafka, Redis, and Kibana.

I've shipped full-stack products at Zilch Labs, built real-time collaborative tools, and competed at the top percentile of Flipkart Grid 6.0 and Adobe Gensolve Hackathon. Knight on LeetCode (1940).

I care about systems that are both correct and fast — clean API design, thoughtful error handling, and UIs that feel inevitable.

0 LeetCode Rating
0 Projects Shipped
0 Internships
0 Hackathon Top Finishes
01 —

Selected Works

Backend Infra

EXPERIENCE — CURRENT  ·  Jan 2026 – Present

Smallcase  Backend Developer Intern

Part of the Integrations Team at Smallcase — building and maintaining API integrations with external broker platforms. Contributing to Node.js services with Kafka for event processing, Redis for caching, and Kibana for observability. Focus on authentication flows, error handling, and reliable request–response contracts at scale.

Node.js · Kafka · Redis · Kibana · REST APIs · Broker Integrations

Full-Stack AI

PROJECT — 001

DebugSync.ai

Real-time collaborative code editor with per-room code and chat isolation, persistent user history, and AI (Gemini) assistance. Modular, scalable full-stack architecture with WebSocket-powered collaboration.

React · Node.js · MongoDB · Redis · WebSockets · Docker · AWS · Gemini AI

Full-Stack AI

PROJECT — 002

CareerAI

AI-powered career coaching platform for dynamic resume creation, cover letter generation, and personalized interview prep using the Google Gemini API. Secure auth via Clerk, data handled with Prisma ORM.

Next.js · TypeScript · React · Tailwind CSS · PostgreSQL · Clerk · Gemini API

Full-Stack Backend

PROJECT — 003

Indieguru

Real-time payment web app with secure user authentication, state-validated transactions, and JWT-based access control. Fund transfers managed through MongoDB with full data consistency guarantees.

React · Node.js · MongoDB · Express · JavaScript · JWT

Frontend Open Source

PROJECT — 004  ·  Nov – Dec 2023

E-Cell LNMIIT Website

Official website for the Entrepreneurship Cell at LNMIIT. Orchestrated the full project lifecycle — translating creative concepts into a robust, dynamic digital platform with a user-centric interface that embodies the spirit of innovation.

React.js · Responsive Web Design

Full-Stack Open Source

PROJECT — 005

E-Summit'24 Website

Full-stack event platform for E-Summit at LNMIIT — enabling seamless registration for events and talks. A collaborative build under tight deadlines, live at esummitlnmiit.live. A gateway to fuelling entrepreneurial journeys.

React.js · Full-Stack Development

Active on GitHub @harshp0205
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02 — Toolkit

Skills & Stack

JavaScript / TypeScript
React / Next.js
Node.js / Express
MongoDB / PostgreSQL
Docker / AWS
DSA / C++ / Java

Languages

JavaScriptTypeScriptC++ JavaCBash

Frontend

React.jsNext.jsTailwind CSS

Backend

Node.jsExpressREST APIs WebSocketsKafka

Database

MongoDBPostgreSQLRedis Prisma ORM

DevOps & Tools

DockerAWSGitHub GitLab CI/CDLinuxKibana

03 — Contact

Let's Build
Something.

Good ideas deserve good code. Let's make something worth building.

kumarharsh0205@gmail.com
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