Software Engineer · Kolkata, India

MahuyaSarkar

Computer science graduate building secure software and computer-vision systems — Java at the core, security as the instinct.

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Statement

I write software the way good locks are made — quietly, precisely, and to keep something safe.

I am finishing a B.Tech in Computer Science and Technology at the University of Engineering and Management, Kolkata, graduating with a DGPA of 8.91. My ground is Java and object-oriented design; my interest is what happens when software meets the real world — cameras, ciphers, and the people on the other side of them.

Across three substantial projects I have built encryption tooling around RSA, AES and DES, a real-time YOLO detection and tracking pipeline, and a touchless ATM that reads a PIN from eye-blink patterns. Each one taught me the same lesson from a different angle: security and clarity are not features you add — they are how you build.

01 — Selected Work

Three builds, one instinct

Touchless Invisible PIN ATM

Eye-blink authentication · Java, JavaFX, Spring Boot, OpenCV

A touchless ATM where the PIN is entered by eye-blink patterns, read through computer vision — no keypad, no shoulder-surfing.
JavaFX interface with a Spring Boot backend handling account authentication and transaction management.
Real-time blink detection in OpenCV; MySQL stores profiles, accounts, blink credentials and transaction records.
Maven-managed, modular architecture built to scale.

JavaJavaFXSpring BootMySQLOpenCVMaven

Object Detection & Tracking

Real-time multi-object vision · Python, YOLO, OpenCV

Real-time multi-object detection and tracking with YOLO on PyTorch — bounding boxes, trajectories, drawn live.
Speed estimation from Euclidean distance and camera calibration.
Automated CSV logging of timestamped position and velocity data for downstream analysis.

PythonYOLO (PyTorch)OpenCVNumPy

Text Encryption Tool

Multi-algorithm cryptography · Java, RSA, AES, DES

One tool, three ciphers — RSA, AES and DES integrated behind a single interface for flexible, secure encryption.
Encodes and decodes sensitive text with confidentiality and integrity guarantees.
Symmetric and asymmetric key handling to protect data in transit and at rest.

JavaRSAAESDES

02 — Experience

Where it began

Jun — Aug 2025

Web Developer Intern

Options & Ideas · Kolkata

Summer internship with the Options & Ideas team; performance rated excellent on completion. ISO 9001:2015 certified studio.

03 — Expertise

The toolkit

Languages

Java
SQL

Tools

MySQL
VS Code
IntelliJ IDEA
Git
GitHub

Databases

MySQL
SQLite

Core concepts

Object-Oriented ProgrammingCybersecurityComputer NetworksDBMSData StructuresAgile MethodologySDLCObject-Oriented ProgrammingCybersecurityComputer NetworksDBMSData StructuresAgile MethodologySDLC

04 — Education