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Proof of impact

Product engineering that leaves evidence

A fast evaluator view of what I own, how I lead, and the measurable outcomes I have delivered across payments, commerce, performance, and full-stack product teams.

Full-stack deliveryPerformancePermissionsPayments & commerce

Outcomes

Measurable delivery signals

The first-pass proof: performance wins, scale, team delivery, and product engagement.

45%

Faster page loads

Reduced page load times by 45% using Next.js SSR and optimized rendering strategies at P-41.

60%

Improved query performance

Optimized database queries with TypeORM and indexing strategies, achieving 60% faster query execution.

10K+

Concurrent users supported

Built scalable applications handling 10,000+ concurrent users with reliable uptime and performance.

15+

Projects delivered

Led a team of 5 developers and delivered 15+ projects on time with high quality and production readiness.

30%

Increased user engagement

Drove a 30% increase in user engagement on the UnderArmour project through frontend optimizations at Dentsu.

Core Expertise

How I contribute across the stack

A recruiter should be able to see my shape quickly: strong frontend depth, practical backend delivery, modern testing discipline, and product-minded leadership.

Frontend

  • React
  • Next.js
  • JavaScript
  • TypeScript
  • Tailwind CSS
  • Zustand
  • Framer Motion

Backend

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

Database

  • MongoDB
  • Mongoose
  • PostgreSQL
  • TypeORM
  • MySQL
  • Prisma

Tools

  • JIRA
  • Figma
  • WebStorm
  • VS CodeVS Code
  • CursorCursor
  • 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

Particle41 (Synemi)

Document manager with granular permissions

2025 – Present

Context
Synemi needed a full document management system with folder/file hierarchies, search, and fine-grained access control tied to association roles.
Problem
Users needed to upload, organize, search, and share documents with different permission levels per role — while handling edge cases like naming conflicts, bulk operations, and nested path resolution.
What I owned
Built the document management UI with tree navigation, drag-and-drop, bulk move, search/sort/filter, and conflict resolution. Built the document API with authentication and role-based permission checks, paginated queries, and per-row access control.
What changed
Shipped a production document manager with folder/file operations, bulk actions, automatic conflict handling, and granular view/edit/admin permissions per role. Comprehensive end-to-end test coverage across all document operations.
  • Next.js
  • NestJS 11
  • TypeORM
  • PostgreSQL
  • TypeScript
  • S3

Particle41 (Synemi)

Authentication, permissions & invitation system

2025 – Present

Context
Synemi required a robust authentication pipeline, role-based permission system, and invitation flow supporting multiple user types across associations.
Problem
The platform needed secure JWT + refresh token flows, switch-persona capability, invitation-based onboarding with auto-accept, and a flexible permission model that could be configured per role per association.
What I owned
Built the authentication API with credential validation, refresh token handling, registration pipelines, and structured error responses. Implemented the permissions layer on the web client with centralized permission state, route-level access gating, and a role editor UI. Built the invitation API with validate, accept, and register flows.
What changed
Delivered production auth with httpOnly refresh cookies, switch-persona, invitation auto-accept, and a permission system with VIEW/EDIT/ADMIN enforced consistently across all API controllers and web routes.
  • Next.js
  • NestJS 11
  • TypeORM
  • PostgreSQL
  • TypeScript
  • JWT
  • Redux
Dentsu logo

Dentsu

Internal reusable component library

2024 – 2025

Context
Frontend teams across Dentsu were building similar UI patterns independently, leading to inconsistent experiences and duplicated effort across projects.
Problem
There was no shared component system, so teams were shipping inconsistent UIs, spending time rebuilding common patterns, and struggling to maintain design coherence across products.
What I owned
Led the creation of a reusable component package with 50+ components — including Accordion, Data Table, Dialog, Drawer, Command, Combobox, and more — used across internal frontend systems. Collaborated with 3 teammates to build comprehensive documentation alongside the library.
What changed
Reduced UI development time significantly by providing ready-to-use, well-documented components. Improved design consistency across teams and established a single source of truth for frontend patterns within the organization.
  • React
  • TypeScript
  • Tailwind CSS
  • Storybook
  • Jest
57 Components built
AccordionAlertAlert DialogAspect RatioAvatarBadgeBreadcrumbButtonButton GroupCalendarCardCarousel

Leadership

How I support teams

My contribution is not just shipping code. I help teams move faster by improving quality, clarifying direction, and supporting the people around me.

  • Led a team of 5 developers at P-41, delivering 15+ projects with consistent quality and on-time execution.
  • Reduced page load times by 45% through Next.js SSR optimization and strategic caching implementations.
  • Improved query performance by 60% with TypeORM optimizations, directly impacting user experience at scale.
  • Built systems handling 10,000+ concurrent users with reliable uptime and strong performance under load.

    • Recognition

    Compact trust signals

    A short supporting layer for the outcomes above: recognitions tied to measurable delivery.

    45% Page Load Reduction

    2025

    P-41

    Achieved 45% faster page loads through Next.js SSR optimization and caching strategies.

    60% Query Performance Improvement

    2025

    P-41

    Optimized database queries with TypeORM, delivering 60% faster query execution across the platform.

    30% User Engagement Increase

    2024

    Dentsu (UnderArmour)

    Drove 30% increase in user engagement through frontend optimizations on the UnderArmour project.

    Razorpay Payment Integration

    2023

    Dentsu

    Successfully integrated Razorpay payment gateway, resulting in 20% increase in transactions.

    Company-safe proof, no confidential details exposed

    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

    PayPal logo

    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

    Infosys logo

    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

    NTT Data logo

    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

    Oracle logo

    Rizon's work on the Weather Tech site showed that he can handle both frontend and backend work easily. He used React and Next.js to build beautiful user interfaces, and Express.js and NestJS to build strong APIs. He also optimized our database performance, making sure everything runs perfectly.

    Prashant Singh Rajput

    SFMC Developer · Dentsu

    Dentsu logo

    Rizon has top-notch React and Next.js skills. He made great design choices for our frontend components and state management, setting a strong standard for the team. He also helped structure our relational databases to keep queries fast and clean. His code is always structured and easy to read.

    Rishon Kumar

    SAP Hybrid Developer · Nagroo

    Nagroo logo

    Rizon's full-stack development skills are really impressive. He builds highly secure APIs using Express.js and NestJS, and integrates them with frontend applications built on React and Next.js. He is also highly skilled with database management and optimization. He always delivers robust solutions that work perfectly.

    Saktiya

    Senior Software Developer · Valuelabs

    Valuelabs logo

    Rizon is very dedicated and pays close attention to details. He helped build web applications using React and Next.js, and wrote efficient queries for our relational databases. His strong work ethic, technical skills, and clean coding standards make him a standout software engineer in any team.

    Tushar Bansal

    Student · University of Adelaide

    University of Adelaide logo

    Rizon has excellent technical abilities. He worked on our projects using React.js, Next.js, and NestJS, creating highly responsive UIs and robust backend APIs. He also optimized our database queries, which made our systems run much faster. His structured approach to coding is fantastic.

    Anurag

    Technical Lead · Synechron

    Synechron logo

    Rizon's mentorship in React and JavaScript was extremely valuable to me. He has a gift for breaking down complex concepts, and his guidance on components design and state management accelerated my learning curve immensely.

    Abhishek

    Frontend Developer (Mentee) · Mentorship

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    The soul is neither born, and nor does it die. It is not that having once existed, it ceases to be.

    — Bhagavad Gita, 2.20