Available for opportunities

Sachin Raghav

Java Backend Developer with hands-on experience in building scalable backend systems using Java, Spring Boot, and REST APIs. Experienced in Microsoft Graph API integration, duplicate data processing, and backend performance optimization. Strong foundation in OOP, Data Structures, and database management with a focus on clean and maintainable code.

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Months Exp.

Projects

15+

Tech Skills

Java

🍃 Spring Boot

⚡ REST API

// WHO AM I

About Me

I'm a Java Backend Developer with hands-on experience in building scalable backend systems using Java, Spring Boot, and REST APIs. I have completed my MCA from Dr. A.P.J. Abdul Kalam Technical University and my BCA from Dr. Bhimrao Ambedkar University.

With professional experience at Aryson Technologies, I have worked on real-world enterprise applications — including Microsoft Graph API integration, duplicate data processing, OAuth 2.0 authentication, and cloud-based OneDrive file management handling 10,000+ files per scan.

I focus on clean, maintainable code with strong foundations in OOP, Data Structures & Algorithms, and database management. I also craft responsive frontends using Thymeleaf, Bootstrap, and HTML/CSS/JS.

Beyond work, I actively sharpen my problem-solving skills — having solved 100+ problems each on LeetCode and GeeksforGeeks.

🎓

MCA — Master of Computer Applications

Dr. A.P.J. Abdul Kalam Technical University · 2023 – 2025

📘

BCA — Bachelor of Computer Applications

Dr. Bhimrao Ambedkar University · 2018 – 2021

💼

Java Developer — Aryson Technologies

Spring Boot · Microsoft Graph API · OAuth 2.0 · REST APIs

🏆

100+ Problems Solved

LeetCode · GeeksforGeeks · DSA & Problem Solving

// WHERE I'VE WORKED

Work Experience

Java Developer

Aryson Technologies · Aryson OneDrive Duplicate Remover

📅 May 2025 – Oct 2025

Built Spring Boot backend for a cloud file management system that scans and processes 10,000+ OneDrive files per cycle with high accuracy
Integrated Microsoft Graph API with OAuth 2.0 authentication, achieving a stable 95% success rate across multiple scan cycles
Designed hashcode-based duplicate file detection logic, reducing redundant storage usage by up to 40%
Applied pagination and batch processing strategies, improving overall processing speed by ~30%
Developed responsive UI components using HTML, CSS, JavaScript, and Bootstrap
Maintained clean, modular backend code with a focus on performance optimization

// WHAT I'VE BUILT

Featured Projects

Java Spring Boot Spring Security MySQL Thymeleaf Bootstrap

Smart Contact Manager

A full-stack contact management system supporting 500+ contacts with quick search, categorization, secure JWT authentication, and scalable REST APIs.

Supports 500+ contacts with quick search & categorization
Spring Data JPA & MySQL for fast, reliable data access
Spring Security with JWT for secure role-based login
Scalable REST APIs for smooth frontend-backend interaction
Responsive Thymeleaf + Bootstrap UI with dynamic forms

Java Spring Boot Graph API OAuth 2.0 Bootstrap

Aryson OneDrive Duplicate Remover

A cloud-based file management system that scans 10,000+ OneDrive files, detects duplicates via hashcode comparison, and enables safe deletion — reducing storage by up to 40%.

Processes 10,000+ OneDrive files with 95% success rate
Hashcode-based duplicate detection (40% storage reduction)
OAuth 2.0 + Microsoft Graph API integration
Pagination & batch processing (30% speed improvement)
Permanent delete & move-to-bin with real-time progress

Java Spring Boot AI API Thymeleaf Bootstrap

ATS Resume Analyzer

An AI-powered ATS Resume Analyzer that checks resumes, provides ATS scores, analyzes resume quality, and gives detailed improvement suggestions using AI.

Resume Upload & AI-based Parsing
ATS Score Analysis Engine
AI-Powered Improvement Suggestions
Resume Preview in Browser
Intelligent Skill Matching System

Java Spring Boot MySQL REST API Thymeleaf Bootstrap

Bharat Sarthi — Driver Booking System

A full-stack driver booking platform built for seamless ride management, real-time driver assignment, and secure user authentication with a clean, responsive UI.