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Full Stack Engineer·India

Piraisudan R

I build customer-facing web products and internal tools, from React/TypeScript UIs to secure multi-tenant backends. Recent work includes an analytics portal used by 100+ scientists, a five-module ERP that cut a real-estate firm's operations time in half, and an e-commerce platform for a US medical-instrument seller.

View my workView résumé
Portrait of Piraisudan R
years shipping web products
5+
users on EchoDolphin
400+
lines of C++ migrated
100k+
ops time cut by the ERP
50%

About

Who I am

I'm a full stack engineer with 5+ years of professional experience. I started in C++ at Renault Nissan, migrating a 100,000-line engineering codebase to a new platform, and moved into web products in 2024, where I now own features from the database schema to the deployed UI.

Most of my recent work is for small teams that need one person to ship the whole thing: an e-commerce storefront with payments, a five-module ERP with WhatsApp automation, a multi-tenant dashboard builder, and a scientific data portal that renders 20,000-point plots without stuttering.

I care about fast page loads, boring and reliable data models, and leaving behind tools other people keep using after I move on.

Based in
India
Experience
5+ years
Focus
React · TypeScript · PostgreSQL
Working style
Full stack, end to end

Experience

Where I've worked

  1. Full Stack Engineer · AppGrape

    Oct 2024 - Present

    Shipped a B2B e-commerce platform, a five-module ERP, a multi-tenant dashboard builder, and an on-device macOS transcription app for a small product studio.

    • Next.js
    • React
    • TypeScript
    • PostgreSQL
    • Supabase
    • SwiftUI

  2. Full Stack Engineer · GrepBio

    Oct 2024 - Sep 2025

    Built a customer-facing RNA-seq analysis portal for 100+ scientists: 50 GB uploads, 20k-point interactive plots, MFA, and on-demand LaTeX reports. Dates overlap with AppGrape — this was concurrent work.

    • React
    • TypeScript
    • FastAPI
    • MongoDB
    • D3.js

  3. Software Engineer · Renault Nissan

    Jan 2021 - Sep 2024

    One of six engineers migrating a 100k+ line C++ codebase from CATIA V6 to 3DEXPERIENCE. Built a Python review tool that sped the migration up 4x and is still in use.

    • C++
    • Python
    • 3DEXPERIENCE

Skills

What I work with

Grouped by where they show up in my work. Each one links back to a shipped project rather than a self-assigned rating.

  • ReactDashboards, storefronts, UI kit
  • Next.jsE-commerce storefront, this site
  • TypeScriptDefault for every frontend
  • JavaScriptES2020+, Node tooling
  • Tailwind CSSUtility-first styling, this site
  • D3.js20k-point plots, network graphs
  • SwiftUIEchoDolphin macOS app
  • PythonAPIs, automation, PDF generation
  • FastAPIData portal with MFA and reports
  • C++3.5 years, 100k+ LOC migration
  • PostgreSQLSchema design, RLS, triggers
  • SupabaseAuth, storage, edge functions
  • MongoDBScientific data portal
  • AWSProduction deployments
  • Azure FunctionsScheduled geolocation pipeline
  • DockerContainerised services
  • LinuxServers, shell, deployments
  • Git & GitHubBranching, reviews, CI

Work

Selected projects

Eight projects across e-commerce, ERP, scientific analytics, and a large C++ migration. Each one has a short write-up on what was built, why, and what was hard.

  • Video

    AppGrape

    Oct 2025 - Present

    High-performance e-commerce platform

    Customer-facing store for a US B2B medical-instrument client, with inventory analytics, asset management, and payment checkout.

    Next.jsPostgreSQLSupabasePayments
    Read case study
  • YouTube

    AppGrape

    Oct 2025 - Present

    AppGrape Business ERP

    Five-module ERP - booking, CRM, inventory, accounts, and biometric payroll - that cut operations time by 50% for a real-estate developer.

    50% faster operations

    PostgreSQLCRMWhatsApp APIAutomation
    Read case study
  • Video

    AppGrape

    Oct 2025 - Present

    Geolocation tracker

    War-room dashboard that turns workforce GPS into a live heatmap, with PostgreSQL aggregates and Azure Functions for real-time queries.

    ReactAzurePostgreSQLLeaflet
    Read case study
  • YouTube

    AppGrape

    Oct 2025 - Present

    React component library and studio

    Multi-tenant dashboard builder and React/TypeScript UI kit with row-level security and direct PostgreSQL access, no ORM in the middle.

    ReactTypeScriptPostgreSQLMulti-tenant
    Read case study
  • YouTube

    AppGrape

    Oct 2024 - Sep 2025

    EchoDolphin

    On-device macOS app for video transcription and subtitle styling, plus a React storefront with Razorpay and PayPal checkout.

    400+ users

    SwiftUIWhisperKitReactmacOS
    Read case studyLive
  • Video

    GrepBio

    Oct 2024 - Sep 2025

    Data analysis dashboard

    Customer portal for 20,000+ point plots and 50GB+ file transfers, with MFA, D3.js views, and on-demand report generation.

    100+ active users

    ReactFastAPIMongoDBD3.js
    Read case study
  • Migration automation tool

    Renault Nissan

    2021 - 2024

    Migration automation tool

    Python tool that flagged unhandled pointers, missing checks, and deprecated APIs, becoming a lasting team standard after I left.

    4× faster migration

    PythonAutomation
    Read case study