Hi, I'm KARTHEESAN JS

Web developer building modern, responsive websites with a growing focus on secure development.

About Me

I am a B.Tech Information Technology student and web developer with hands-on experience building responsive and user-focused websites. Alongside web development, I am learning cybersecurity fundamentals to understand how applications can be built more securely.

I approach web development with a security-first mindset, keeping fundamentals like input validation and XSS awareness in mind.

Skills

Frontend

HTML5 — Comfortable
CSS3 (Flexbox, Grid) — Comfortable
JavaScript — Practicing

Backend & Tools

Python — Learning
MongoDB — Basic
Firebase — Basic
Git & GitHub — Comfortable

Security Basics

Networking Fundamentals — Learning
Linux Basics — Learning
Web Security Concepts — Learning

Currently Learning

Advanced JavaScript

DOM manipulation, async programming, event handling

Networking Fundamentals

TCP/IP, DNS, HTTP basics

Web Security Basics

XSS, CSRF, secure form handling

What I’m Exploring Next

React Fundamentals

Component-based UI development and state basics.

Backend Authentication

Security Labs

Hands-on practice using TryHackMe labs.

Projects

JK Window Decorations

Problem: Small business needed an online presence
Solution: Designed a responsive service website
Tech: HTML, CSS, JavaScript
Result: Clean UI and mobile-friendly layout

View Project GitHub

Thwariq Anwar Portfolio

Problem: Required a professional personal portfolio
Solution: Designed a modern, responsive portfolio website
Tech: HTML, CSS, JavaScript
Result: Clean branding with smooth user experience

View Project GitHub

Certificates

Verified certifications and continuous learning in web development and cybersecurity.

Cybersecurity Fundamentals

Google / Cisco / TryHackMe

Web Development

HTML, CSS, JavaScript

View All Certificates →

Get In Touch

Open to internships, freelance opportunities, and collaborations. Feel free to reach out.

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