Open to opportunities

Raj Kumar

@rajkumar21

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Full-Stack & Flutter developer building production-ready web and mobile apps using React, Spring Boot, and Flutter.

India

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What I'm looking for

I’m looking for a team where I can build end-to-end web and mobile products, ship features quickly, and own measurable improvements—especially offline-first experiences, secure APIs, and data-driven ML features.

I'm a B.Tech CSE student (2026) specializing in Full-Stack and Flutter development, with hands-on experience across web and mobile platforms. I've interned at HCLTech, where I built a full-stack e-commerce platform handling 200+ daily queries and cut deployment time by 90%. As a Machine Learning intern at CodSoft, I built a fraud detection model with 92% precision and a movie genre classifier with 88% accuracy.

My key projects include CURIEM, a CRM & project management platform built with React, Spring Boot, and JWT authentication, and RescueZero, a fully offline emergency response app in Flutter with GPS navigation and zero cellular dependency. I also freelance as a WordPress developer, having worked with 10+ clients and improving their page load speeds by 60%.

I have a research paper published in IJRTI Journal (Jan 2026) and bring strong skills in React, Flutter, Python, Java, Django, and cloud deployment tools.

Experience

Work history, roles, and key accomplishments

Current

Freelance Web Developer

Current

Self Employed

Dec 2025 - Present (6 months)

Developed custom WordPress solutions for 10+ clients, increasing online user engagement by 45%. Built React-based CRM dashboards with JWT authentication, role-based access control, and REST APIs to unify client and project management.

WordPress React JWT REST APIs Role Based Access Control Dashboard Development SEO Optimization Performance Optimization

Java Web Development with AI Intern

HCLTech

Dec 2024 - Mar 2025 (3 months)

Built a full-stack e-commerce site with a dedicated database handling 200+ daily product queries during testing, improving load speed by 30%. Automated deployments to cut manual release time from 2 hours to 20 minutes.

Java Full Stack Web Development E commerce Development Performance Optimization Deployment CI CD

Web Development AI Intern

HCLTech

Dec 2024 - Mar 2025 (3 months)

Built a full-stack e-commerce site with a dedicated database handling 200+ daily product queries during testing, improving load speed by 30% versus baseline. Automated deployments using cloud tools, reducing manual release time from 2 hours to 20 minutes.

Java Full Stack Database Design REST APIs CI CD Deployment Performance Optimization Git

Machine Learning Intern

CodSoft

Dec 2024 - Jan 2025 (1 month)

Designed a credit-card fraud detection model using Logistic Regression that achieved 92% precision and 90% recall on a 50k-transaction dataset. Built a movie-genre prediction system that classified 5,000+ movie plots with 88% accuracy using TF-IDF features.

Python Logistic Regression Fraud Detection TF IDF data preprocessing Pandas Matplotlib Precision Recall Evaluation

Machine Learning Intern

HCLTech

Dec 2024 - Jan 2025 (1 month)

Designed a credit-card fraud detection model using logistic regression achieving 92% precision and 90% recall on a 50k-transaction dataset. Implemented movie-genre prediction using TF-IDF features, correctly classifying 5,000+ movie plots with 88% accuracy.

Machine Learning Logistic Regression Fraud Detection TF IDF Python Pandas Matplotlib