👋 Hello, World! I'm

Devamanohar
K S

I build |

Computer Science undergraduate passionate about crafting scalable backend systems with Java & Spring Boot, containerized via Docker, and deployed on AWS.

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☕ Java

🍃 Spring Boot

☁️ AWS

🐳 Docker

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Who Am I?

I'm a Computer Science Engineering student at Nehru Institute of Technology, Coimbatore (CGPA 7.9), with a passion for building robust, scalable backend applications.

My expertise centers on Java & Spring Boot ecosystems — designing RESTful APIs, securing them with Spring Security, and persisting data via Hibernate/JPA. I complement this with containerization using Docker and cloud deployment on AWS.

Outside of coding, I sharpen my problem-solving edge on LeetCode (100-day streak 🏅) and HackerRank (5⭐ Java).

7.9 CGPA

5⭐ HackerRank Java

100 Day LeetCode Streak

5+ Projects Built

Education

🎓

B.E. Computer Science Engineering

Nehru Institute of Technology (Autonomous) – Coimbatore

Sep 2023 – May 2027

CGPA: 7.9

📘

Higher Secondary Certificate (HSC)

Bharathiyar Matriculation Higher Secondary School – Attur

May 2023

83.5%

Skills & Technologies

💻

Languages

Java

🍃

Framework

Spring Boot

🌐

Web Technologies

HTML CSS

☁️

Services

AWS EC2 AWS S3 Elastic Beanstalk

🗄️

Database

MySQL PostgreSQL MongoDB

🐳

Containerization

Docker

🔀

Version Control

Git & GitHub

🛠️

Tools & IDE

Maven Postman VS Code IntelliJ IDEA Swagger

🧠

Concepts

Microservices Architecture High Level Design

Experience

Java Backend Intern

CODEC Technologies

Remote Mar 2026 – May 2026

Gained hands-on understanding of Spring Boot framework for building backend applications and REST APIs.
Improved problem-solving and self-learning skills by working independently in a remote environment.

Spring Boot REST APIs Java

Featured Projects

💼

Job Portal Backend

RESTful backend application supporting job postings, candidate profiles, and application processing.

Designed CRUD REST APIs for job & candidate management
Implemented relational DB schema with entity relationships
Secured endpoints using Spring Security authentication

Java Spring Boot MySQL

🎓

Student Management System

REST API platform for managing student records, course enrollments, and academic performance.

Built APIs for student data, marks & attendance management
Leveraged Hibernate/JPA for database persistence
Configured Spring Security for role-based endpoint access

Java Spring Boot MySQL

🧑‍🏫

MentorTrack – Mentor-Mentee System

Management platform for mentor-mentee tracking, assessment creation, and task assignments.

Implemented role-based access control with JWT authentication
Integrated Google Forms API for feedback collection
Used MongoDB GridFS for assignment file management

Java Spring Boot MongoDB Docker

🛡️

Tourist Safety System

Tourist security platform with real-time location tracking, geo-fencing, and emergency SOS alerts.

Built real-time location tracking & SOS alerts
Created geo-fencing service with safety zone monitoring
Implemented digital ID system with hash-chain verification

Java Spring Boot PostgreSQL

🎫

Event Booking System

Event registration platform featuring seat selection, ticket generation, and venue management.

Developed seat selection & QR-code ticket generation
Built admin controls for event & venue management
Automated email confirmations for bookings

Java Spring Boot MongoDB

Certifications & Achievements

📜 Certifications

HackerRank

Java (Basic) Certification

Demonstrated fundamental Java programming proficiency

Oct 2025

HackerRank

SQL (Basic) Certification

Validated SQL query writing and relational database skills

Apr 2026

Hackathon

Pinnacle Hacks 2025

Participated in a 24-hour AI-focused hackathon at NIT Coimbatore

Sep 2025

🏆 Achievements

⭐⭐⭐⭐⭐

5-Star Java on HackerRank

Achieved the top-tier 5-star badge in Java, showcasing strong algorithmic thinking and problem-solving skills.