PORTFOLIO / 2026REV 03Open to work

KartikKumar

I build learning platforms, exam portals and client web apps — the kind with role permissions, SCORM players and dashboards that stay fast once real data lands in them.

Role
Frontend Engineer
Experience
3+ years
Stack
React · Next.js · TypeScript
Based in
Delhi, India · IST · UTC+5:30
scroll to read the sheet
01 / 07
lib/data/about.ts

What I actually build

I'm a frontend engineer in Delhi. For the last four years I've worked on one thing almost continuously: education software that real cohorts log into every day — learning platforms, exam portals, admin consoles and the reporting behind them.

That means most of my work isn't a landing page. It's role-based permissions, SCORM playback, exports that don't time out, dashboards that stay fast after the data grows, and desktop builds for proctored exams. I own features end to end — interface, API contract, queue worker, deploy.

Alongside that I take on client work: e-commerce with B2B quoting, agency and healthcare sites, directories. Same standard, smaller surface.

Currently
Sr. Software Developer, Wissenhive E-Learning
Pronouns
he/him
Core stack
React · Next.js · TypeScript · Node
Also ship
Express · MongoDB · Redis · Laravel · Electron
Focus areas
LMS, SCORM, RBAC, performance, accessibility
Working style
Own the feature end to end, ship weekly
Known for
Cleaning up half-finished, AI-generated codebases
Open to
Full-time · Delhi NCR or Noida · hybrid or remote
4
Years shipping

2022 — present

6,052
Commits at work

11 repositories

10
Systems in production

LMS, exams, portals

20+
Projects delivered

work and client

10 systems · 6,052 commits

Systems running in production

Employer products I contributed to between 2022 and 2026. Commit counts are my own commits in each repository — tap a row for what it does and what it runs on.

  • Course delivery for colleges and enterprise cohorts — SCORM playback, progress tracking, certificate generation and queued background jobs for the heavy work.

    • Next.js
    • Express
    • MongoDB
    • Redis
    • BullMQ
    • AWS S3
    • 3,219 commits
  • The main product surface: jobs board, CTF compete module, micro-learning, learner dashboards and reporting charts.

    • Next.js
    • Redux Toolkit
    • Recharts
    • Socket.IO
    • Express
    • 1,477 commits
  • Back-office for the whole platform — role-based permissions, bulk exports, generated PDF reports and payment reconciliation.

    • Next.js
    • MUI
    • Redux Toolkit
    • ExcelJS
    • PDFKit
    • Puppeteer
    • 811 commits
  • Tenant-isolated training and phishing-simulation platform built as a Turborepo monorepo with shared typed contracts, a shared component library and end-to-end tests.

    • TypeScript
    • Turborepo
    • pnpm
    • Zod
    • shadcn/ui
    • Playwright
    • 229 commits
  • Onboarding, catalogue access and revenue reporting for training partners and resellers.

    • Next.js
    • Redux Toolkit
    • Express
    • MongoDB
    • 101 commits
  • Threaded discussions with live notifications, moderation tooling and single sign-on shared with the main platform.

    • Next.js
    • Socket.IO
    • Express
    • JWT
    • 71 commits
  • Central sign-in shared across every product, plus subscription and invoice handling.

    • Next.js
    • Express
    • Mongoose
    • Stripe
    • 65 commits
  • Certification exam portal plus a locked-down Windows desktop client for supervised test sessions.

    • Next.js
    • Electron
    • Nextron
    • Express
    • MongoDB
    • 66 commits
  • Single-source repository for every course, lab and script, rendered to an internal review portal with a git-based approval flow.

    • MkDocs Material
    • Markdown
    • GitHub Actions
    • 9 commits
  • Browser access to hands-on lab machines through a small Go relay service.

    • Go
    • WebSockets
    • VNC
    • 4 commits
lib/data/skills.ts

Parts list

Everything here is in something I have shipped — not a list of things I have read about. Grouped the way I actually reach for them.

JavaScript (ES6)TypeScriptPHPSQLGo (basics)React.jsNext.jsReduxTailwind CSSMUIjQueryBootstrapLaravelElectron.jsNode.jsExpressSocket.IOBullMQZodshadcn/uiMySQLMongoDBRedisMongooseGitJMeterLighthouseChrome DevToolsPostmanAWSDockerTurborepopnpmPlaywrightPM2GitHub ActionsSEOREST APIsAgile/ScrumProfiling & DebuggingCaching StrategiesRBACQueue WorkersWCAG AccessibilityLMS DevelopmentSCORM IntegrationE-Learning PlatformsEnterprise ApplicationsProctored ExamsMulti-tenant SaaS
Multi-tenant SaaSProctored ExamsEnterprise ApplicationsE-Learning PlatformsSCORM IntegrationLMS DevelopmentWCAG AccessibilityQueue WorkersRBACCaching StrategiesProfiling & DebuggingAgile/ScrumREST APIsSEOGitHub ActionsPM2PlaywrightpnpmTurborepoDockerAWSPostmanChrome DevToolsLighthouseJMeterGitMongooseRedisMongoDBMySQLshadcn/uiZodBullMQSocket.IOExpressNode.jsElectron.jsLaravelBootstrapjQueryMUITailwind CSSReduxNext.jsReact.jsGo (basics)SQLPHPTypeScriptJavaScript (ES6)
LNG-0105 items

Languages

Day-to-day writing languages, typed where it counts.

  • JavaScript (ES6)
  • TypeScript
  • PHP
  • SQL
  • Go (basics)
FRM-0215 items

Technologies

Frameworks and UI layers I ship features in.

  • React.js
  • Next.js
  • Redux
  • Tailwind CSS
  • MUI
  • jQuery
  • Bootstrap
  • Laravel
  • Electron.js
  • Node.js
  • Express
  • Socket.IO
  • BullMQ
  • Zod
  • shadcn/ui
DAT-0304 items

Databases

Schema design, indexing and query tuning.

  • MySQL
  • MongoDB
  • Redis
  • Mongoose
TLS-0412 items

Tools

Build, debug, measure, deploy.

  • Git
  • JMeter
  • Lighthouse
  • Chrome DevTools
  • Postman
  • AWS
  • Docker
  • Turborepo
  • pnpm
  • Playwright
  • PM2
  • GitHub Actions
PRC-0508 items

Concepts

How the work gets planned, measured and kept fast.

  • SEO
  • REST APIs
  • Agile/Scrum
  • Profiling & Debugging
  • Caching Strategies
  • RBAC
  • Queue Workers
  • WCAG Accessibility
DOM-0606 items

Domain Expertise

Where four years of context actually lives.

  • LMS Development
  • SCORM Integration
  • E-Learning Platforms
  • Enterprise Applications
  • Proctored Exams
  • Multi-tenant SaaS
lib/data/experience.ts

Revision history

Three roles, one continuous thread: education software that has to work on exam day.

April 2025 – Present

Wissenhive E-Learning Pvt. Ltd.

Uttar Pradesh, IN

Sr. Software Developer

  • 01Architected and developed comprehensive LMS & Exam Portal solutions for schools, focusing on scalable and user-centric educational content delivery
  • 02Implemented dynamic role-based access control (RBAC) system with configurable modules and feature-level permissions
  • 03Implemented SCORM player integration in the LMS, enabling standardized content packaging, tracking, and reporting
  • 04Worked extensively with Next.js 12, 13, and 14 to optimize performance, scalability, and maintainability
  • 05Optimized application performance ensuring seamless cross-device compatibility

Nov 2022 – April 2025

Dreambig IT Solutions India Pvt. Ltd.

Uttar Pradesh, IN

Software Developer

  • 01Designed and developed Cyberyami Job and Compete module (including CTF integration), Micro Learning module, Partner Portal, and Community Forum
  • 02Worked on the LevelUp Certification Exam Portal, a Windows-based examination application with integrated proctoring
  • 03Developed and maintained LMS platforms for colleges and universities
  • 04Redesigned a legacy web application using React and Next.js, resulting in a 75% reduction in code complexity
  • 05Built reusable components achieving 50% reduction in development time

May 2022 – Nov 2022

Dreambig IT Solutions India Pvt. Ltd.

Uttar Pradesh, IN

Jr. Developer Trainee

  • 01Leveraged Laravel, HTML, CSS to create a dynamic and secure CTF web application
  • 02Crafted a user-friendly custom form similar to Google Forms to collect data within the CTF application
  • 03Demonstrated significant growth in JavaScript proficiency while working on the CTF project
lib/data/projects.ts

Selected sheets

Client and personal builds, most recent first. Each sheet pins while you read it.

Filter
01 / 10

Crysta

Application
Crysta — B2B E-Commerce & Quotation Platform

B2B E-Commerce & Quotation Platform

A wholesale e-commerce platform for premium kitchen and wardrobe accessories, built for dealers and fabricators. Combines a retail storefront with a B2B quote workflow, price-on-request items, downloadable catalogs, and Razorpay checkout.

Build notes

  • Quote cart with bulk RFQ flow
  • 402-product catalogue with faceted filters
  • Customer accounts, orders & addresses
  • Next.js
  • TypeScript
  • Tailwind CSS
  • Razorpay
  • SEO
  • ISR Caching
02 / 10

VMD Events

Company site
VMD Events — Brand Experience & Event Agency

Brand Experience & Event Agency

A Delhi-based brand experience agency website covering corporate events, artist management, manpower deployment, and fabrication & branding. Dark editorial design with a work showcase and an enquiry funnel.

Build notes

  • Service & case study showcase
  • Enquiry form with validation
  • SEO-optimised marketing pages
  • Laravel
  • Blade
  • Vite
  • Tailwind CSS
  • JavaScript
03 / 10

Vedang Homecare

Company site
Vedang Homecare — Home Healthcare Services Website

Home Healthcare Services Website

A multi-city home healthcare website offering nursing, caregivers, ICU at home, doctor visits, and medical equipment rental. Bilingual (English/Hindi) with location-wise service pages and a lead capture flow.

Build notes

  • Bilingual EN/HI pages with hreflang
  • City-wise service landing pages
  • Enquiry & callback lead capture
  • Laravel
  • Blade
  • Alpine.js
  • Tailwind CSS
  • Hreflang i18n
04 / 10

Savant Solutions

Company site
Savant Solutions — Business Consulting Platform

Business Consulting Platform

A comprehensive business consulting website offering strategic services including research, IT development, marketing, and sustainability consulting. Features modern animations and responsive design.

Build notes

  • Modern UI with animations
  • 10+ service pages
  • Responsive design
  • Next.js
  • Framer Motion
  • Tailwind CSS
  • TypeScript
05 / 10

Belsync

Company site
Belsync — AI-Powered E-Commerce & POS Platform

AI-Powered E-Commerce & POS Platform

A modern SaaS platform empowering businesses with AI-driven eCommerce solutions, seamless POS integration, and smart automation for streamlined operations and growth.

Build notes

  • AI-powered recommendations
  • Global server infrastructure
  • Integrated ecosystem
  • Next.js
  • Tailwind CSS
  • TypeScript
  • AI Integration
06 / 10

CSV Techno

Application
CSV Techno — Property Evaluation System

Property Evaluation System

A data-driven property evaluation system providing real-time analytics and insights for informed decision-making in real estate investments. Features interactive charts and role-based access control.

Build notes

  • Real-time case analytics
  • Interactive charts & graphs
  • Role-based access control
  • React
  • MUI
  • Next.js
  • TypeScript
  • Apache ECharts
  • Api Integration
  • Optimization
07 / 10

The Last Clicks

Company site
The Last Clicks — Photography & Videography Portfolio

Photography & Videography Portfolio

A modern creative agency website showcasing photography, videography, and editing services. Features elegant dark theme design with smooth animations and a streamlined production process flow.

Build notes

  • Dark theme with gradient accents
  • Service showcase cards
  • Stats counter section
  • Next.js
  • Tailwind CSS
  • Framer Motion
  • TypeScript
08 / 10

ZenCap Fund

Company site
ZenCap Fund — Investment Fund Management Platform

Investment Fund Management Platform

A professional website for SEBI-registered Category II Alternative Investment Fund, featuring fund information, team profiles, and investment process documentation.

Build notes

  • Fund information display
  • Team showcase
  • Investment process flow
  • Bootstrap
  • JavaScript
  • HTML/CSS
  • Responsive Design
09 / 10

Groupsgyani

Application
Groupsgyani — WhatsApp, Telegram and Discord Directory

WhatsApp, Telegram and Discord Directory

A comprehensive directory platform for WhatsApp, Telegram, and Discord communities with responsive design and optimized database queries.

Build notes

  • Responsive design
  • Optimized database queries
  • Intuitive community discovery
  • Laravel (PHP)
  • MySQL
  • Bootstrap 4
  • JavaScript
  • jQuery
10 / 10

Library Management System

Application
Library Management System — Full-Stack Library Solution

Full-Stack Library Solution

A comprehensive library management solution with real-time book tracking, user management, and AJAX-based interactions.

Build notes

  • Real-time book tracking
  • User management
  • Optimized database schema
  • Java
  • JSP
  • HTML/CSS
  • Bootstrap 4
  • jQuery
  • AJAX
  • Oracle 10g
lib/data/education.ts

Certification

Degrees first, then the credentials — every certificate below links to its public verification page.

June 2021 - June 2024

Bachelor of Science in Computer Science

Ganga Institute of Technology & Management (Aff. MDU)

Haryana, IN

Score

69%

June 2019 - June 2021

Diploma in Computer Science Engineering

Guru Tegh Bahadur Polytechnic Institute (Aff. BTE)

New Delhi, IN

Score

86%

lib/data/site.ts

Start a conversation

Open to workFull-time and freelance · Delhi NCR or Noida · hybrid or remote

Hiring for a frontend or full-stack role, or need something built — a platform, a portal, a store with B2B quoting? Send the context and I will reply with what it takes and how long.

Located
Delhi, India · IST · UTC+5:30
scope of work

What I take on

  • Web & product development

    Marketing sites, portals and dashboards in React, Next.js and TypeScript — built to stay fast once real data arrives.

  • SaaS & custom software

    Multi-tenant products, role-based permissions, billing and admin tooling, front to back.

  • Learning platforms & exam portals

    LMS builds, SCORM playback, certificates, proctored exam flows — four years of it, not a first attempt.

  • Vibe-code cleanup

    AI-generated codebase that half works? I take it apart, fix the structure, and get it to something you can ship and maintain.

  • Cloud & deployment

    AWS, Docker, PM2 and GitHub Actions pipelines, so releases stop being an event.

  • SEO & performance

    Core Web Vitals, rendering strategy, structured data and the technical work that makes pages rank.