Rithik Kumar S

Full-Stack Developer · AI Systems Thinker · Software Engineer

I design systems, write code, and build intelligent tools that scale.

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Technical Expertise

Frontend

ReactNext.jsTailwind CSSJavaScript

Backend

Node.jsExpressREST APIsJWT

Database

MongoDBMongoose

Mobile

FlutterDart

AI & Systems

Prompt EngineeringLLM APIsRAGFunction Calling

Featured Projects

Systems built with intention

Project 01

Eurythion

Dual-Personality Conversational AI

CLI-based AI system featuring dual personas — Light (Optimistic) and Dark (Brutally Honest). Built with prompt-engineered personalities, structured output, and RAG-ready architecture.

Dual PersonasStructured OutputCLI Interface
Built with
Node.jsLLM APIsRAGPrompt Engineering
Project 02

Inkspire

Personalized Book Library & Journal App

Full-stack application for managing personal book collections and journaling. Features JWT authentication, comprehensive CRUD operations, and a clean, reflective user interface.

AuthenticationCRUD SystemResponsive UI
Built with
MERN StackNext.jsJWTMongoDB
Project 03

ManageYourSaaS

SaaS Tools & Systems Platform

Product-thinking focused platform for managing SaaS tools and workflows. Emphasizes scalability, clean architecture, and thoughtful system design.

Product-FocusedScalableClean Architecture
Built with
ReactNode.jsREST APIs

How I Build

Principles that guide every decision

Systems over hacks

Building sustainable architectures that scale

Clarity over cleverness

Code that communicates its intent

Scalability over shortcuts

Foundations that support growth

Long-term thinking over hype

Technology choices that endure

Built with v0