Available for full stack roles

Full Stack Developer building product-ready apps.

I am Kumar Rohan, a JavaScript-focused full stack developer with 2.5+ years of hands-on project experience across React, Node.js, Express and MongoDB. I turn business ideas into clean interfaces, reliable APIs and deployable web products.

View Projects 00rohansah00.kr@gmail.com

2.5+ Years project experience

8+ Full stack builds

500+ Git commits

About

Practical engineer with a product mindset.

Frontend Responsive React interfaces, state management, reusable components.

Backend REST APIs, authentication flows, MongoDB schemas and Express services.

Delivery Git workflow, deployment, debugging, collaboration and ownership.

I build web applications with attention to performance, readable code and the details that make a product feel complete. My work spans music platforms, fintech flows, ecommerce experiences and dashboard-style applications, where I focus on clean UI, API integration, data handling and smooth user journeys.

Frontend ownership Designed responsive pages, forms, protected routes and state-driven interfaces using React, Redux and Chakra UI.

Backend implementation Created Express APIs, connected MongoDB models and handled authentication-ready application flows.

Team-ready habits Comfortable with Git, code reviews, deployment checks and communicating tradeoffs clearly.

Experience

Production ownership across fintech platforms.

Currently building compliant, partner-ready credit card platforms with React, TypeScript, Node.js, Express, MySQL and CI/CD workflows.

40% Frontend performance improvement

35% API latency reduction in critical flows

30% Faster partner onboarding

99.9% Production uptime collaboration

Current Mar 2024 - Present

Application Engineer

Hyperface Technologies Pvt. Ltd.

React.js TypeScript Node.js Express MySQL Jenkins CI/CD

Owned end-to-end frontend development for a Co-branded Credit Card platform, from system design and development to testing and production deployment with Product Managers.

Independently built and delivered CBCC Lite, live with AU Bank in partnership with Cheq, enabling scalable credit solutions for end users.

Contributed to modular, compliant credit solutions for AU Bank, Yes Bank, Federal Bank and NCB, with integrations for Flipkart, Ixigo and Cheq.

Re-architected key application flows, improving frontend performance by 40%, reducing API latency by 35% and improving stability during high traffic.

Built scalable, reusable and responsive React components, reducing bounce rates by 25% across key user journeys.

Spearheaded benefits-based membership plan development, generating 7-figure monthly INR revenue while maintaining 100% regulatory compliance.

Developed a custom Node.js proxy server to securely route API requests between internal services and third-party providers.

Collaborated with Product, QA and Backend teams, reviewed code, mentored juniors, documented systems and maintained architecture decision records.

Internship Nov 2023 - Apr 2024

MERN Stack Developer Intern

Masai School

Mentored students on coding tasks and contributed to a 30% improvement in average student code quality per instructor evaluations.

Collaborated with instructors to evaluate assignments, helping achieve a 25% increase in student project completion rates.

Selected Work

Projects written like case studies.

Each project highlights ownership, product thinking and stack depth instead of only showing screenshots.

Music Platform

TuneWaves

Full stack music discovery app focused on browsing, content structure and polished user journeys. Built the React interface, server routes and MongoDB-backed data flow.

ReactCSSNode.jsExpressMongoDB

GitHub Live