<Sumit Kumar />
  • Home

● Available for new opportunities

Hi, I'm Sumit Kumar

I build real-time web apps — collaborative editing, live notifications, URL infrastructure — and deploy everything I make.

sumit@portfolio: ~
$whoami
Full-stack developer · B.Tech CSE @ VIT
$cat now.txt
Building a real-time collaborative editor on Y.js CRDTs
$ls ~/projects
collabdocs/ curlix/ notifyx/ paperpilot/ devconnect/
5 Projects, All Deployed•Open to Full-time Roles
Download Resume
Connect
GitHub
Follow
Say Hi
Sumit Kumar

Who I Am

About / 00

I ship real-time
systems.

Full-stack developer focused on real-time sync and backend architecture. Everything below is deployed — you can open every project and try it.

> City:  Patna, India
> Email: ersumitkumar45@gmail.com
Download Resume
developer.js
// Currently open to full-time roles,
// remote or India-based.
 
/*
* "The interesting problems happen when
* two users hit save at the same time.
* That's what I build for."
*/
5Projects ShippedDeployed & live in production

CODE ACTIVITY

~/github/imsumit28

$git log --author=imsumit28 --since="1 year ago"

commits
repositories
stars
 
# one square per day, last 12 months full profile

EXPERIENCE

Experience / 01

Where I've
shipped in production.

Hands-on engineering work — building and maintaining real product features alongside senior engineers and QA.

EncodersPro Private Limited

Full Stack Developer Intern

8+REST endpoints and 5+ React components
shipped to production alongside engineering & QA.
  1. 01Shipped 5+ React.js UI components to production screens used by customers.
  2. 02Built and maintained 8+ Node.js REST API endpoints for core product workflows.
  3. 03Wrote MongoDB queries and backend integrations across product modules.
  4. 04Fixed production bugs escalated by QA in a 6-member Scrum team.
Stack /React.jsNode.jsMongoDBREST APIsGitAgile

PROJECTS

Selected work / 02

Things I've
shipped.

Deployed, working builds — real-time systems, full-stack apps, and developer tools. Tap any project for the full breakdown.

Filter by tech:
CollabDocs
★ Featured build

CollabDocs

WEB-APP

Real-time collaborative document editor with AI writing assistance, live cursors, and CRDT-based conflict resolution.

300+ server tests85%+ code coverageHorizontal scalable with Redis adapter
Next.jsReactNode.jsTypeScriptTipTapSocket.io+3
Live Demo CodeView details →
NotifyX
View details →

NotifyX

WEB-APP

Production-grade distributed notification platform with real-time delivery, offline sync, and two-layer idempotency.

Node.jsExpressBullMQRedis+3
Live Demo Code
DevConnect
View details →

DevConnect

WEB-APP

A full-stack developer network with real-time chat, JWT auth, and profile-based developer discovery.

ReactViteNode.jsMongoDB+1
Live Demo Code
Curlix
View details →

Curlix

WEB-APP

A production-grade URL shortener with sub-10 ms redirects, async analytics, and zero-account UX.

ReactViteNode.jsExpress+4
Live Demo Code
Paper Pilot
View details →

Paper Pilot

WEB-APP

AI-powered assessment-creation platform that lets educators generate structured, print-ready exam papers — with answer keys — in seconds.

Next.jsReactTypeScriptTailwind CSS+11
Live Demo Code

SKILLS

Toolkit / 03

The tools I
reach for.

A working stack for building and shipping full-stack, real-time applications — from interface to infrastructure.

01CORE STACK07
ReactReact
JavaScriptJavaScript
TypeScriptTypeScript
Node.jsNode.js
Next.jsNext.js
Express.jsExpress.js
MongoDBMongoDB
02UI & STYLING03
HTML5HTML5
CSS3CSS3
Tailwind CSSTailwind CSS
03AUTH & APIs02
REST APIsREST APIs
JWT AuthJWT Auth
04Tools & Deployment04
Git & GitHubGit & GitHub
VS CodeVS Code
VercelVercel
RenderRender
05REAL-TIME & QUEUES03
Socket.ioSocket.io
RedisRedis
BullMQBullMQ

EDUCATION

Academics / 04

Where I'm
studying.

B.Tech in Computer Science at VIT, class of 2028. The projects above happen alongside the coursework below.

2024 — 2028 Enrolled
8.18CGPA / 10

B.Tech · Computer Science & Engineering

Vellore Institute of Technology

CourseworkData StructuresDBMSOperating Systems

Academic project

Open Source Audit & Automation Capstone (OSS – NGMC)

  • 01Developed 5 Bash scripts for system reporting and auditing, reducing manual effort by 40%.
  • 02Audited Python (OSS) and built an interactive Manifesto Generator.
View on GitHub ↗
2021 — 2023

Class XII · CBSE

Central Board of Secondary Education

89.4%

RESUME

Curriculum vitae / 05

My resume,
one page.

Skills, experience, and education in a single PDF. Download it or open it in a new tab.

Document

01RoleFull Stack Developer
02FormatPDF · A4
03UpdatedApril 2026
04LengthOne page
Download Resume
Open in new tab ↗
resume.pdf

CONTACT

Get in touch / 06

Get in
touch.

Open to internships, freelance work, and full-time roles. If you're hiring — or just want to talk about real-time systems — send a note.

Average response
Within 24 hours
Current status
Available
Timezone
IST (UTC+5:30)

Send a message

Or reach out directly via email or LinkedIn