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Rizon Kumar Rahirizon__kumar

Remote (India) · 4+ years

BengaluruCuttack, Odisha

Full Stack Developer · React · Next.js · Node.js · Express.js · NestJS · rizon.kumar.rahi@gmail.com

I build scalable, high-performance web applications across the full stack, with a focus on clean architecture and measurable impact.

Full Stack Developer with 4+ years of experience building fast and reliable web apps. I specialize in React, Next.js, Node.js, Express.js, and NestJS to deliver clean, high-performance code and great user experiences.

@RizonKumar rizonkumarrahi rizonkumar @rizon__kumar rizon.kumar.rahi@gmail.com

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Experience

Where I've worked

P-41Working
Full Stack Developer
September 2025 – Present
Remote (Remote)
Sep 2025 – Present · Remote
DentsuPast
Software Developer
July 2022 – August 2025
Bangalore, India (On-Site)
Jul 2022 – Aug 2025 · Bangalore, India

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Currently Building

Side projects in progress

ElevateSDE — Enterprise AI Interview Prep Platform (SaaS)

In progress

Architected a multi-tenant, enterprise-grade SaaS platform that helps software engineers prepare for interviews. Built as a Turborepo + pnpm monorepo with a NestJS backend organized into 19 domain modules following strict Domain-Driven Design + Clean Architecture (Domain → Application → Infrastructure → Presentation), and two Next.js 16 (App Router) frontends — a candidate portal and an independently deployable Super-Admin backoffice served behind a single origin. The centerpiece is a harness-based, Dockerized code-execution sandbox that grades DSA submissions across JavaScript, Python, and C++ in isolated containers, with a synchronous run path and a BullMQ-queued submit path. On top of it sits a 2,700+ problem bank, daily challenges with solving streaks, timed coding contests, achievement badges, an in-app notification center, spaced-repetition review, per-problem discussions/bookmarks/notes/lists, a Kanban job tracker, community forums with moderation, and timeframe leaderboards — with RBAC, JWT access/refresh rotation, feature flags, and immutable audit logging for SOC 2 / ISO 27001 compliance.

NestJSNext.js 16TypeScriptReactTailwind CSS+21

Tinder — Real-Time Social Platform

In progress

Engineered a scalable full-stack Tinder clone strictly adhering to SOLID clean architecture principles (Routes → Controllers → Services → Repositories). Features real-time WebRTC peer-to-peer audio/video calls, Socket.io signaling, secure user authentication with Joi sanitization, and Google Gemini AI-powered matchmaking with personalized icebreakers.

ReactZustandTailwind CSSFramer MotionHTML5+11

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Specialization

What I specialize in

I work best on product teams that need strong frontend judgment, dependable end-to-end delivery, and a quality-first approach to shipping.

Frontend Engineering

Build fast, responsive interfaces with React, Next.js, and TypeScript, focusing on performance and user experience.

Backend Development

Design and implement scalable APIs and services with Node.js, NestJS, and Express, backed by PostgreSQL and MongoDB.

Full-Stack Delivery

Own features end-to-end from database design to UI, delivering complete solutions with measurable business impact.

Performance Optimization

Reduce load times, optimize queries, and implement caching strategies that deliver tangible speed improvements.

Tech Stack

Technologies I work with

Frontend

React
Next.js
JavaScript
TypeScript
Tailwind CSS
Zustand
Framer Motion

Backend

Node.js
NestJS
Express
Prisma
REST APIs
Socket.io
WebRTC

Database

MongoDB
Mongoose
PostgreSQL
TypeORM
MySQL
Prisma

Tools

JIRA
Figma
WebStorm
VS Code
Cursor
Postman
Google Gemini API
Cloudinary
Joi Validator
JWT
Codex

DevOps & Workflow

Git
CI/CD
Claude Code
Docker
Vercel

Architecture

System Design
HLD
LLD

Case Studies

Company-safe examples of how I work

I have not centered this site around personal projects because my strongest work has come from shipping real products in real teams. These case studies focus on ownership, constraints, and outcomes without exposing confidential details.

Particle41

Synemi — Community management platform

2025 – Present

Context: Built a full-stack community management platform (Synemi) for Particle41, serving as the sole full-stack developer owning both the Next.js web client and NestJS API.
Problem: The client needed a production-grade platform with complex domain logic — document management, architecture requests with voting workflows, granular role-based permissions, and multi-association support — all with enterprise-level security.
What I owned: Owned both codebases end-to-end: the web client with 50+ reusable components, server routes, and centralized state management, plus the API with layered architecture, auth guards, database repositories, API documentation, and end-to-end test coverage.
What changed: Delivered a production platform with granular permission system (VIEW/EDIT/ADMIN per resource), document manager with tree/search/bulk-move, architecture request workflows with voting and expiry, and comprehensive e2e test coverage across both codebases.

Next.js
NestJS 11
TypeORM
PostgreSQL
TypeScript
Redux
Vitest
Playwright
Supertest

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Testimonials

What colleagues say

Feedback from people I've worked with across teams and companies.

Rizon has amazing technical skills and is a great team player. He helped us build frontend applications using React and Next.js, and connected them to our databases. He solves complex problems easily while writing clean, reliable code. His work made our systems faster and improved the overall code quality.

Aparna Sharma

Technical Lead · PayPal

Rizon played a key role in our projects, especially for Ralph Lauren. He is excellent at full-stack development, using React and Next.js for the UI and Express.js with NestJS for backend services. He also designed our database schemas to handle high traffic and make queries faster. His work was always top quality.

Vishal Ugale

Software Developer · Infosys

It was a pleasure working with Rizon on the Under Armour project. He has great frontend skills in React and Next.js, and understands how to connect them with databases efficiently. He focused on making our pages load much faster, which improved user engagement and made the site run smoothly.

Ankit Dudhat

Software Developer · NTT Data

Rizon is really good at solving difficult problems step-by-step. He designed stable APIs for us using NestJS and Express.js, and handled complex database structures with ease. He also has strong React and Next.js skills. He always delivers clean, organized code that is very easy for the team to maintain.

Ila Raj

SDE-2 · Oracle