01 /

From India with
Love

Open for work

Full-stack / AI / Open Source

Full-Stack
Developer

Next.js TypeScript React Node.js

Me / 001Scroll to explore

God's child

JKS / 2026India

Jyatin
Kumar Singh

2026 Portfolio

Building practical
full-stack applications
for real users.

Selected work Download CV

Design & code by JyatinScroll ↓

Full-stack / AI / Open source

Full-Stack
Developer

Next.js TypeScript React Node.js

Open for work

01 /

From India with
Love

JKS / 001

God's child

Full-stack developerIndia / 2026

Based in
India,
Passionate about Full-Stack Development

Design & code by JyatinScroll ↓

Building practical full-stack applications
for real users.

Based in India

Jyatin
Kumar Singh

2026 Portfolio / Selected work

Selected work Download CV

Web Dev&App Dev

Services

Frontend DevelopmentBackend SystemsResponsive DesignAPI Integration

UI&Systems

Focus

PerformanceAccessibilityClean UIGreat UX

Web Dev

&

App Dev

Expertise

Frontend Development

Backend Systems

Responsive Design

API Integration

Database Architecture

02 / Experience

Work Experience

Software development internships in production environments

Software Development Engineer Intern

KaHo Technologies

September 2026 – PresentBengaluru, India · Remote

Building parent-facing product features for the Parent App, with a focus on photo discovery, verification workflows, and frontend reliability.

Face Detection & Photo Clustering: Implemented a face-detection and photo-clustering feature that groups photos by person, helping parents quickly find photos of their child.
Form Reliability: Reduced form submission failures by 50%, from 20% to 10%, by improving client-side validation and structured error handling across key user flows.
Frontend Performance: Improved image-rendering performance by 60%+ and achieved sub-500 ms image load times through optimized lazy loading and caching strategies.

StackNext.jsReactJavaScriptTypeScript

Software Engineering Intern

Tata Steel

June 2026 – July 2026Jamshedpur, India

Developed and deployed SteelCare PMMS, a full-stack preventive maintenance system for monitoring the health of terminal shop-floor computers.

Preventive Maintenance System: Built and deployed SteelCare PMMS using React.js and Spring Boot 3, delivering a full-stack preventive maintenance workflow for monitoring terminal shop-floor computers.
Async Notification Engine: Reduced API response time from a 60-second timeout to under 50 ms by moving email notifications to asynchronous processing with Spring @Async.
Authentication & Access Control: Implemented stateless JWT authentication and role-based access control (RBAC), with backend validation to prevent unauthorized privilege escalation.
Deployment & Reporting: Deployed the React frontend and Spring Boot API with a cloud-hosted MySQL database, and implemented Excel-compatible CSV exports for maintenance reporting.

StackReact.jsSpring Boot 3JavaMySQLJWTNetlifyRender

03 / Open Source

Open Source

500+ GitHub contributions8+ merged PRs

Selected contributions, with the change and stack at a glance.

30 SEP 2026Open

OpenDesignPR #1

Devcontainer setup

Added the initial development-container setup for a consistent contributor environment.

Dev ContainersDockerVS Code

22 AUG 2026Open

OpenFeature JS SDKPR #1451

Default values for missing flags

Fixed React FeatureFlag fallback behavior for missing flags with FLAG_NOT_FOUND.

TypeScriptReactJest

25 AUG 2026Merged

Speech DispatcherPR #1110

Edge TTS output module

Added Edge TTS voices and fixed the generic module shell requirement for pipefail.

CBashLinux

23 SEP 2026Merged

Shep AIPR #891

Fleet status bar placement

Moved FleetControl into the dashboard header and added focused interaction tests.

TypeScriptReactNext.js

16 OCT 2026Merged

OpenStoryPR #2019

Sequence location links

Added sequence-location to library support with authorization checks, React Query cache invalidation, and test coverage.

TypeScriptReactReact QueryTesting

25 AUG 2026Merged

OpenStoryPR #1307

Storybook MSW v3 migration

Migrated Storybook MSW setup to v3 and fixed Windows Vite path resolution.

TypeScriptStorybookMSW

OpenStory · OpenFeature · Speech Dispatcher · Shep AI · OpenDesign

03 / About

About

I'm Jyatin Kumar Singh, a B.Tech Computer Science student at Lovely Professional University, graduating in 2028. I build full-stack applications, practise DSA, explore AI/RAG systems, and contribute to open source.

My main stack is JavaScript/TypeScript, React, Node.js, Express.js and MongoDB, with C++ and Java for problem solving. I enjoy taking an idea from a rough concept to a working product.

Passionate about clean code, problem-solving, and collaboration, with a focus on delivering high-performance, user-centered applications.

200+

LeetCode

100

Day Streak

150+

GFG / Codeforces

5

Merged PRs

Frontend

JavaScript

TypeScript

React

Next.js

Tailwind CSS

HTML5

CSS3

Backend

Node.js

Express.js

REST APIs

Database

MongoDB

MySQL

PostgreSQL

Tools

Git

GitHub

Docker

VS Code

Java · C++ · Python · AI · RAG · DSA · Open Source

04 / Projects

Featured Work

Production platforms, evidence systems, audio forensics, and research initiatives.

Live Demo Code

Code

Live Demo Code

Code

Live Demo Code

Code

View all projects archive

04 / ProjectsAll (9) →

Featured Work

01

KiranaWala

AI-Powered Hyperlocal Grocery Marketplace

Built a MERN-stack grocery marketplace featuring 80+ products, incorporating feedback from five local store owners to validate real-world requirements.
Secured payment processing with Razorpay signature verification and HMAC-SHA256 webhook validation to authenticate payment events and prevent duplicate processing.
Integrated an AI-powered basket builder that converts natural-language grocery lists into structured carts, alongside demand prediction for inventory planning.

Live Demo Code

01 / 092026Primary Work

Live Demo Code

ReactNode.jsExpressMongoDBRazorpayJest

04 / Blog

Notes &
Writing

A place for technical notes, engineering lessons, and things I learn while building and contributing to software.

01 / Technical Notes

Event-Driven Music Recommendation Systems

A technical case study on building a recommendation platform around Kafka, stream processing, batch ML, and a learn-to-rank feedback loop — exploring how real-time events and offline learning can work together at scale.

KafkaRecommender SystemsSystem Design

LinkedIn Interactive IEEE PDF

02 / Open Source

How Open Source Introduced Me to a Whole New World of Engineering

Reflections on moving beyond personal projects into real production codebases — learning to read unfamiliar systems, debug real issues, collaborate with maintainers, and grow through open-source engineering.

Open SourceEngineeringGitHub

03 / Hackathons

How Hackathons Changed the Way I Work

From Gear Up Season 5 at LPU to building under real deadlines, hackathons taught me to move from ideas to working systems faster, communicate better with teammates, stay calm when things break, and become more confident in solving unfamiliar problems.

HackathonsTeamworkProblem Solving

05 / Recognition

Recognition
& Milestones

A focused record of problem solving, consistency, open-source contribution, and production engineering.

2026Problem Solving

200+ LeetCode Problems

Consistent DSA practice with Java as primary language for interview prep

2026Consistency

100-Day Streak

Maintained a 100-day LeetCode practice streak building consistency in algorithms and data structures

2026Open Source

8 Merged Open-Source PRs

Contributed fixes and improvements across real production codebases, learning from maintainers and collaborating through code review.

2026Software Engineering

SDE Intern at KaHo Technologies

Shipped 5+ production features for a customer-facing app, cutting form failure rates by 50%

07 / Proof of Work