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Humayun KabirHK / 01
Dhaka, Bangladesh

JAVASCRIPT ENGINEER & OPEN-SOURCE CONTRIBUTOR

Md Humayun Kabir.

Building thoughtful interfaces.
Turning complex ideas into useful software.

I’m a Product Engineer based in Dhaka, Bangladesh, working as an L2 JavaScript Developer at Linno (formerly Code Rex), building production-ready applications with React, Next.js, TypeScript, and Vue.js.

My work spans WordPress products, visual email builders, and automation tools. I’ve contributed to Mail Mint, Creator LMS, and WPFunnels, and I’m a proud WordPress Core Contributor.

Outside of work, I build side projects, practice problem-solving, and share what I learn along the way.

Explore my work ↘View résumé ↗
CURRENTLY ATLinno
FOCUSED ONProduct engineering
PART OF THE COMMUNITY WordPress Core Contributor
01 / THE JOURNEY

Experience

Learning, building, and growing.

CURRENT

Dec 2025 — Present

Dhaka, Bangladesh

L2 JavaScript Developer

Linno ↗

Core frontend developer for Mail Mint and CreatorLMS in React, and WPFunnels in Vue.js.

  • Leading integration of an API-key-based AI chatbot with an MCP connector into Mail Mint and WPFunnels.
  • Maintaining the Email Builder, the most complex internal tool in the product suite.
  • Owned development, maintenance, and deployment of the internal communication tool: OAuth and JWT authentication, a PWA with offline viewing, real-time socket notifications, and GitHub Actions CI/CD.
ReactVue.jsOAuth & JWTPWAGitHub Actions

Nov 2023 — Dec 2025

Dhaka, Bangladesh

JavaScript Developer

Linno ↗

Built and maintained frontend features across Mail Mint, WPFunnels, and CreatorLMS using React and Vue.js.

  • Integrated REST APIs, created reusable components, and managed application state with Redux.
  • Optimized the company’s sales websites and owned the full development cycle of its Next.js marketing website.
Next.jsReduxREST APIsPerformance

Aug 2023 — Nov 2023

Dhaka, Bangladesh

JavaScript Developer Intern

Linno ↗

Supported the frontend team with UI development and bug fixes across WordPress plugin products, while learning REST API integration and responsive layout practices in existing React and Vue.js codebases.

ReactVue.jsResponsive UIREST APIs
02 / SELECTED WORK

Things I’ve helped build

More on GitHub ↗

Amal10 Bengali worship tracker home page
SIDE PROJECT · OFFLINE-FIRST PWA

Amal10 ↗

A Bengali-language, gamified Islamic worship tracker for the 10 days of Dhul Hijjah, with 16+ active users. Includes a global leaderboard, 15+ achievement badges, push notifications, and magic-link, password, and Google sign-in.

Next.js · TypeScript · Supabase · PWA
Creator LMS course management interface
PRODUCTION · CORE FRONTEND DEVELOPER

Creator LMS ↗

A learning platform for WordPress. Led development of the Email Builder and Automation Builder to help creators connect with students.

React · TypeScript · WordPress · Redux
Official Mail Mint WordPress plugin banner
PRODUCTION · FRONTEND CONTRIBUTOR

Mail Mint ↗

Email marketing, made approachable. Contributed frontend features to a WordPress product for email campaigns and marketing automation.

React · TypeScript · WordPress
SmartClipboard clipboard history app
SIDE PROJECT · DESKTOP APPLICATION

SmartClipboard ↗

An Electron clipboard manager for macOS with clipboard history and a smart-paste menu, used by around 10 real users.

Electron · JavaScript · Node.jsCode ↗
Solving Owl coding challenge platform
SIDE PROJECT · WEB APPLICATION

Solving Owl ↗

An interactive place to practice coding, solve challenges, and track progress, with an integrated editor and instant feedback.

React · Firebase · Monaco EditorCode ↗
Official WPFunnels WordPress plugin banner
PRODUCTION · FRONTEND DEVELOPER

WPFunnels ↗

Contributed responsive components and frontend experiences to a visual sales funnel builder for WordPress.

React · Vue.js · WordPress
03 / GIVING BACK

Built together, made better.

WordPress
OPEN SOURCE

Core Contributor ’25

RELEASE6.8RELEASE6.9RELEASE7.0

Three releases credited with code contributions.

I contribute to WordPress core, helping improve the everyday experience of the people who use it. Recognized as a Core Contributor ’25, with patches in WordPress 6.8, 6.9, and 7.0. My contributions include theme bulk actions and direct links to Site Health check results.

View my contributor profile ↗
Personal GitHub ↗Work GitHub ↗
TOOLS OF THE TRADE

Skills & technologies

Frontend
JavaScript, TypeScript, React, Next.js, Redux, React Router, Vue.js; SSR, SSG, and CSR
Backend & data
Node.js, Express, REST APIs, Socket.io, MongoDB, MySQL, PostgreSQL
Authentication & platforms
JWT, OAuth 2.0, Firebase, WordPress plugin development
Delivery & quality
GitHub Actions, Docker, Jest, Vitest, Playwright, Git, Webpack, Vite, Figma

Languages Bangla (native) · English (fluent) · Urdu (familiar)

04 / MILESTONES

A little recognition

Good work comes from good teams.

Humayun receiving the New Talent of the Year award

New Talent of the Year

Linno · 2024

01
Excellent Performer of the Quarter recognition for Humayun Kabir

Best Performer of the Quarter

Linno · 2024

02
Humayun presenting during the company automation testing hackathon

Company Hackathon Winner

Automation testing solution · Linno · 2024

03
Humayun receiving the engineering architecture competition prize

Engineering Architecture Competition

Winning Checkoutify solution · Code Rex · 2023

04
05 / ALWAYS CURIOUS

Beyond the day job

I enjoy solving problems, exploring new tools, and sharing the lessons I learn as a developer.

IN CONVERSATIONMy programming journey on a tech podcast↗ONE PROBLEM AT A TIMEPracticing on LeetCode↗
HAVE SOMETHING IN MIND?

Let’s build something useful.

A project, an idea, or just a hello — I’d love to hear from you.

Mirpur 1, Dhaka 1216, Bangladesh · (+880) 1907642670 · WhatsApp