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Hi, I'm Ranjithkumar A

B.Tech graduate in AI & Data Science, passionate about software development, problem solving, and building impactful solutions.

ranjithkumara.tech@gmail.com

+91 63796 48721

Salem, Tamil Nadu

View Resume
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Ranjithkumar A

Software Engineer

focus:
  • → Full-Stack Development
  • → AI & Data Science
  • → Problem Solving
500+ DSA Problems
6+ Client Projects
Available for opportunities

My Experience

Freelance Web Developer

May 2026 – Present

RK Freelance (rkfreelance.in)

  • Building responsive, high-performance web applications and custom landing pages for clients.
  • Handling complete delivery from UI/UX design and frontend development to cloud hosting and deployment.

Java Full Stack Development Internship

Jul 2024 – Aug 2024

Dev Technology Solutions, Salem

  • Developed responsive full-stack web applications using Java, JavaScript, HTML/CSS, and MySQL.
  • Engineered secure backend REST APIs and CRUD services, improving database query efficiency and responsiveness.

My Education

Knowledge Institute of Technology Salem, India

B.Tech in Artificial Intelligence and Data Science

CGPA: 8.31/10

2022 - 2026

Visit College Website →

Government Boy's Higher Secondary School Idappadi, Salem

12th Grade (HSC)

Percentage: 86.6%

2021 - 2022

Government Boy's Higher Secondary School Idappadi, Salem

10th Grade (SSLC)

Percentage: 83.2%

2019 - 2020

My Skills

Languages

Java
Python
C

Libraries

NumPy NumPy
Pandas Pandas
Matplotlib Matplotlib

Tools

Git
GitHub
VS Code
PBI Power BI

Deployment

Netlify
Vercel Vercel
Firebase
😺 Neocities

AI Tools

Claude Claude
ChatGPT ChatGPT
Antigravity Antigravity
Cursor AI Cursor AI
Gemini Gemini
Codex Codex

Web Technologies

HTML
CSS
JavaScript

Database

MySQL
Firebase
Codex MongoDB

Leetcode Progress

Coding isn't just practice — it's how I sharpen problem-solving daily 🚀

LeetCode stats for ranjith_ak

My Leetcode Journey

Solving problems on Leetcode has been a key part of strengthening my Data Structures and Algorithms skills. Each problem teaches a new pattern, improves logical thinking, and builds confidence for technical interviews.

From easy warm-ups to challenging hard problems, I stay consistent with daily practice — tracking progress, learning optimal solutions, and pushing my limits one submission at a time.

View Profile

Coding Badges & Milestones

Achievements earned through consistent daily problem solving, study plans, and coding challenges.

500 Days Badge
LeetCode

500 Days Badge

500+ Days Consistency

365 Days Badge
LeetCode

365 Days Badge

Annual Streak Milestone

200 Days Badge 2026
LeetCode

200 Days Badge

2026 Consistency Award

100 Days Badge
LeetCode

100 Days Badge

100 Days Problem Solving

Introduction to Pandas Badge
LeetCode

Intro to Pandas

Data Analysis Study Plan

Build with AI Badge
GeeksforGeeks

Build with AI

AI Workshop & Practice

HackerRank Java 4-Star Badge
HackerRank

Java (4-Star)

4-Star Coding Milestone

Google Cloud Arcade Badge
Google Cloud

GDP Arcade

Arcade Gear Milestone

Google Cloud Intro to Generative AI Badge
Google Cloud

Intro to GenAI

Completion Badge

Google Cloud Arcade Gear Badge
Google Cloud

Arcade Gear

Cloud Skills Milestone

My Projects

Certifications & Achievements

Interactive 3D showcase of verified credentials, national hackathon honors, and algorithmic excellence.

Offline Workshop: How to Build Website and Deploy

Offline Workshop: Web & Deploy

Workshop & Mentorship · Web Architecture

Web Dev React Netlify
Guided 60+ students in modern frontend & live deployment
Covered responsive UI, Git workflow & Netlify cloud hosting
View Workshop Details
GeeksforGeeks Technical Scripter Top 5

Top 5 – GfG Technical Scripter

GeeksforGeeks · Nationwide Competition Finalist

DSA Tech Writing Top 5 Rank
Ranked in Top 5 Nationwide among 5,000+ technical authors
Authored high-impact technical interview preparation articles
Read on GeeksforGeeks
Java Full Stack Development Internship

Java Full Stack Internship

Dev Technology Solutions · Full Stack Developer

Java Spring Boot MySQL
Architected end-to-end full stack web modules & RESTful APIs
Implemented secure auth, database indexing & responsive UI
View Verified Certificate
Programming in Java NPTEL

Programming in Java (NPTEL)

IIT Kharagpur · Elite Gold Certification (87%)

Core Java OOP Concepts Elite 87%
Scored Elite 87% in proctored national IIT Kharagpur exam
Mastered multithreading, collections framework & JVM memory
View NPTEL Certificate
DSA Workshop Certificate

DSA Intensive — Finest Coder

Knowledge Institute of Technology · 10-Day Boot Camp

DSA Problem Solving C++
In-depth mastery of trees, graphs, dynamic programming & recursion
Competitive programming speed & space-time optimization
View Workshop Certificate
GFG 160-Day Coding Challenge

GFG 160-Day Challenge

GeeksforGeeks · 160 Days Consecutive Solving

160 Days Hard DSA Verified
160 consecutive days of advanced algorithmic challenges solved
Excellence in data structures, edge cases, and algorithmic rigor
View Challenge Certificate
Data Science Workshop at MIT Chennai

Data Science at MIT Chennai

Madras Institute of Technology · Anna University

Python Data Science ML Models
Exploratory data analysis, cleaning pipelines & statistical modeling
Machine learning workflows using Scikit-Learn and Python
View MIT Certificate
Python Libraries Bootcamp ISTE

Python Libraries Bootcamp

Indian Society for Technical Education · Bootcamp

NumPy Pandas Matplotlib
Vectorized matrix algebra, broadcasting & dataset reshaping
High-performance data manipulation & interactive visualization
View ISTE Certificate
Ease The Error 5.0 Hackathon

Ease The Error 5.0 Hackathon

SVCE FODSE · National Level Hackathon Finalist

Full Stack Rapid Prototype Finalist
Rapid full stack software architecture built under 24hr deadline
Cross-functional teamwork, live demo & technical presentation
View Hackathon Certificate
GeeksforGeeks GenAI Certification

GFG GenAI Certification

GeeksforGeeks · Certified Prompt & LLM Engineering

Generative AI LLMs Prompts
Practical prompt engineering, system design & LLM API integration
Built AI agents & autonomous retrieval-augmented workflows
View GenAI Certificate
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Contact Me

ranjithkumara.tech@gmail.com

+91 63796 48721

Salem, Tamil Nadu, India

Feel free to reach out for collaboration, opportunities, or just to connect!

Codolio RK Freelance