Hi, I'm Mathinraj
Full Stack Developer at Cognizant, crafting scalable web applications with Java, React, and modern development tools.
About Me
I'm a dedicated Full Stack Developer at Cognizant, building scalable web applications using Java, React, and modern development tools. With a foundation in Electrical and Electronics Engineering from Kongu Engineering College, I transitioned my passion for technology into software development — focusing on creating impactful, user-centric solutions.
Beyond my day job, I love building side projects — from browser extensions like TouchLock to full-featured PWAs like SpendTrak. I'm driven by the desire to solve real-world problems through clean, efficient code.
- MongoDB SI Associate
- Git Going Fast — Udemy
- Git and GitHub Certification
- Full Stack Developer — Cognizant Academy
Full Stack Developer Program
Cognizant Academy — Spring Boot, React, SQL
Bachelor of Engineering — EEE
Kongu Engineering College
Higher Secondary
Malar Matric Hr Sec School
Featured Projects
From browser extensions to full-stack apps and IoT systems
TouchLock
Browser Biometric Lock ExtensionChromium extension that locks your browser behind biometric auth (Touch ID / Windows Hello) or a 6-digit PIN. Built with vanilla JS, WebAuthn, and Manifest V3.
SpendTrak
Smart Expense Tracker PWAOffline-first Progressive Web App for expense tracking with Google Drive sync, split expenses, analytics, bill reminders, and multi-currency support. Completely free, no backend.
SmartSpend
Full-Stack Finance ManagerFull-stack expense tracker with interactive dashboards, transaction filtering, budget tracking, and role-based access control for users and admins.
Smart Energy Meter
IoT Home AutomationIoT-based smart energy meter integrated with home automation for real-time energy monitoring and appliance control.
No Contact Attendance
Sustainable Monitoring SystemContactless attendance monitoring system designed for safety and sustainability, using modern sensing technologies.
Chain Link Twister
Industrial Fencing MachineAutomated chain link twisting machine for land fencing applications with adjustable length control. Published at ICECA 2023.
Experience
Junior Software Engineer
Building scalable web applications with Java, Spring Boot, and React. Contributing to enterprise-grade projects serving large user bases.
Software Engineer Trainee
Completed Full Stack Developer program at Cognizant Academy. Trained in Spring Boot, React, CSS, and modern development practices.
Assistant Engineer
Worked on engineering projects applying electrical systems knowledge in an industrial manufacturing environment.
Graduate Engineering Trainee
Gained hands-on experience in electronics manufacturing and industrial systems during the trainee program.
Profiles & Publications
HackerRank
Problem solving & coding challenges
LeetCode
Data structures & algorithm practice
Professional network & updates
GitHub
Open source projects & code
Publications
Automatic Flood Alert System Using IoT
9th International Conference on Electrical Energy Systems (ICEES)IoT-based solution to address flash flood risks from hydroelectric dams. A centralized database connects national hydropower stations, automating alerts to residents in high-risk areas as dam water levels rise.
Development of Chain Link Twister Machine for Land Fencing Applications
7th International Conference on Electronics, Communication and Aerospace Technology (ICECA), 2023A new machine for small businesses offers adjustable length and manual operation, addressing challenges in efficiency and safety for chain link fencing production.
Contact Me
Have a project in mind or just want to say hello? Feel free to reach out!