Balaji Sankar - Senior Full-Stack Developer

Senior Full-Stack Engineer

Taking new projects

Email

Namakkal

FrontendFull-StackDeveloperIdea toproduct

Design, digitiseyour thoughts.

The Jusgoeaz way2019

I help founders go from a rough idea to a working product - design, build and launch - and most of them have gone on to their next stage. Ten years in, React and TypeScript up front, Node, NestJS and Django behind it.

10yrs
shipping React & TypeScript products
50+
products delivered end to end
25+
industries, from fintech to vehicle platforms

Proof,not promises

Measured on live products↓
Shipping since2016
01 - ePettyshop storefront sections
428

My own multi-seller commerce SaaS: storefront, admin, POS, payments and WhatsApp.

02 - Parity checks
450

Run across a Django-to-React rebuild to show exactly what still differed. One surfaced a bug already live in the old app.

03 - Docs pages
4,000+

Generated by a compiler I built to move a billing giant’s developer docs onto MDX.

04 - Print-ready book pages
<30s

Down from roughly double. Previews render in under a second.

05 - Legacy module, rebuilt
1wk

40+ files moved from Django to React + TypeScript, built with Claude Code.

Problems worthtalking about

(01) Problem→ Solved

You have an idea, not a product yet.

I’ve taken startups from first sketch to a working product - design, build, launch - and most of them made it to their next stage. I think like a co-founder, not a ticket-taker.

0→1Idea to a working product, then on to the next stage
(02) Problem→ Solved

Every release breaks something else.

I find what’s actually causing the breakage, not just the symptom. Then I put guardrails in place - types, contracts, parity checks - so shipping stops feeling like a gamble.

450Parity checks run on a single rebuild
(03) Problem→ Solved

The old Django app nobody wants to touch.

I’ve moved legacy Django and jQuery apps onto React and TypeScript three times on one platform - without taking the product offline.

3×Legacy migrations on one platform, zero downtime
(04) Problem→ Solved

Dashboards that crawl.

Sixty-screen procurement suites, multi-brand dealer portals, data-heavy tables. I make them fast and predictable again.

~60Screens on one procurement suite, still fast
(05) Problem→ Solved

You need the whole product, not just the screens.

Storefront, payments, order pipeline, admin, print production. I build front to back with Node, NestJS and Django behind the React.

2Countries, one storefront-to-print pipeline
Featured case✦ AI-nativeEnterprise procurement

claude › port boardsDjango→ React + TS

Ported with Claude Code, checked against 450 behaviours. Dev-complete in one week.

  1. 01

    Inventory the legacy

    Read every template, inline script and JavaScript file behind the four boards to record what each one fetched, rendered and did on every click.behaviour inventory

  2. 02

    Rebuild on the shared UI kit

    Grid, kanban, status and calendar boards rebuilt in React and TypeScript on the shared UI kit, with Claude Code drafting and me reviewing.React + TS · shared UI kit

  3. 03

    New API behind the boards

    Four Django and jQuery boards became 40+ files across two repos and a new REST API with 21 endpoints, with no shared code from the old app.Django REST · 21 endpoints

  4. 04

    Verify like a sceptic

    450 parity checks against the legacy views, each marked pass, partial or fail. One surfaced a bug already live in the old app. Afterwards I wrote the method up as Claude Code skills.parity audit · 450 checks

Read the full case study →4 boards · 450 checks · 1 week
claude › reading legacy boards…
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0/ 40+ files
Claude Codeport-feature skillwhite-label skillticket-story skillCLAUDE.mdType-check gatesBiome + HuskyReact + TSDjango REST
4boards rebuilt
40+files across two repos
450parity checks
1 wkto dev-complete

AgentsI’vebuilt& shipped

Agents · skills20 · 19
Slash commands7
/feature-pipeline

One feature, from research to a ship / no-ship call - each step its own agent, with me approving at the gates.

  1. 01ResearcherCompetitors, Reddit, HN, GitHub issues
  2. 02PMPRD with acceptance criteriamy gate
  3. 03DesignerFlows, states, accessibility
  4. 04DevFile-by-file implementation planmy gate
  5. 05ReviewerVerdict against PRD and design
  6. 06TesterTest plan, then runs the tests
  7. 07ReporterOne readable summary
  8. 08PM approverFinal ship / no-shipmy gate

Generators

Brief in, real output
  • theme-generatorFull storefront themes
  • html-to-themeAI HTML to editable theme
  • master-test-suiteQA cases in 5 phases

Domain experts

One hard area, known cold
  • razorpay-phonepePayments and webhooks
  • graphql-contract97 ops across 3 repos
  • ssg-buildStorefront prerendering

Engineering crew

My plugin, every repo
  • frontend-reviewerReviews before ship
  • ui-qaReal-browser QA
  • /ticket · /ship · /prTicket to PR

Migration kit

Behind the one-week port
  • port-featureLegacy to new, phase by phase
  • white-labelRe-skin per tenant
  • ticket-storyJira-ready stories
AI inside the products
✦ AI CRM (in development)Call analysis with Gemini and Claude, follow-ups over WhatsApp
✦ AI product descriptionsGemini / OpenAI copy with a credit system per plan
✦ AI sales copilotDrafts outreach, with an optional review step before sending
✦ Design to themePaste AI-made HTML, get an editable storefront theme

20 agents, 19 skills, 7 slash commands

SelectedWork

2016 — Today12 case studies
Layout
01FeaturedAI · SaaS
1 wkDjango to React with Claude Code

Enterprise procurement2026

Django to React with Claude Code

I rebuilt four live Django boards and their API in React and TypeScript with Claude Code, then ran 450 parity checks to show exactly what still differed. Afterwards I turned the method into reusable Claude Code skills.

Claude CodeSkillsReact
Case study →
02FeaturedDocs · SaaS
4,000+docs pages from one compiler

Subscription billing2024 — 2025

Chargebee Docs

A compiler that turns a proprietary bracket-tag markup into MDX, checks every page, and generates sidebars, versions and redirects. Plus the Next.js docs site and an editor that publishes straight to GitHub.

Next.jsMDXunified
Case study →
03FeaturedCommerce
<30sto render a print-ready page

D2C publishing2025 — 2026NDA

Storybook Print Engine

A personalised-book business in two countries: storefront, two payment providers, order pipeline and automated 300 DPI print. I replaced hard-coded layouts with a declarative engine and a visual builder.

Next.jsNodeHeadless Chrome
Case study →
04SaaS
70+shared components behind one portal

Vehicle platform2026NDA

Vehicle Dealer Hub

A standalone upfitter portal folded into one dealer dashboard: open and completed orders, CSV and Excel import, filters and export, all on a shared component library.

ReactTanStack RouterReact Query
Case study →
05SaaS · AI
~60screens, plus a design system four products share

Procurement SaaS2022 — Today

Simfoni Suite

Around sixty screens across procurement projects, contracts and spend analytics, plus the UI kit the products share. Three legacy migrations to React + TypeScript with zero downtime.

ReactTypeScriptVite
Case study →
06Mobile · SaaS
3apps: school dashboard, driver and parent

School transport2019 — 2022

Scabbr

A school-bus safety platform: a fleet dashboard for schools, a React Native driver app with GPS and QR boarding scans, and a parent app that shows the bus live.

ReactReact NativeGraphQL
Case study →
07AI · SaaS
3channels: email, LinkedIn and WhatsApp

Sales AI2023 — 2025NDA

AI Sales Copilot

Researches prospects and drafts outreach across email, LinkedIn and WhatsApp. Reps can review AI drafts before they send. A Chrome extension suggests replies right inside Gmail and LinkedIn.

ReactChrome MV3Shadow DOM
Case study →
08Commerce
~2 wkfull-stack booking build

Venue bookings2025 — 2026

Ubox

Online booking for a private mini-theatre and celebration venue: customer site with PhonePe checkout and the booking flows of the admin dashboard.

ReactNestJSPhonePe
Case study →
09SaaS · Commerce
P&Lprofitability, returns and Buy Box tracking

E-commerce SaaS2021NDA

Marketplace Analytics

Analytics for brands selling on Amazon and Flipkart: profitability, payment reconciliation, inventory, returns with in-browser QR receiving, Buy Box tracking and brand protection.

ReactPython LambdasGitLab CI
Case study →
10SaaS
CRMpipeline and targets against ERP billing

Electrical manufacturing2020 — 2022NDA

Industrial Sales CRM

A sales CRM for the India arm of a Japanese industrial company: opportunity pipeline, access by org hierarchy, targets measured against ERP billing, and funnel-ageing reports.

ReactNodeReporting
Case study →
11Mobile
5 yrson one learning product

EdTech2018 — 2023NDA

Learning Habit App

A daily-learning app for kids, with a console for parents, learning centres and subject experts.

ReactLearner appAdmin console
Case study →
12Docs
~18 moembedded with the developer-platform team

Tax compliance2020 — 2021NDA

Tax API Portal

The public developer portal for a global tax-compliance company: API reference, integration guides, SDKs and live demos.

ReactDocsAPI demos
Case study →

TeamsI’veshippedwith

Years with one studio9
Products for them20+
012016 — Today
NFN Labs

Product studio. Frontend developer, then long-term contractor across twenty-plus products.

022022 — Today
Simfoni

Procurement & spend intelligence. ~60 screens and the design system four products share.

03Docs
Chargebee

Developer docs platform and migration compiler.

04NDA
Vehicle Platform

Dealer and upfitter portals for a vehicle platform, merged into one.

05NDA
Spend SaaS

A SaaS spend-management platform that helps finance and IT teams cut wasted software spend.

06Founded 2019
Jusgoeaz

My own studio. Design, digitise your thoughts.

07NDA
Industrial MNC

Field sales CRM for a Japanese electrical major.

08Platform
Generic Tech

Scabbr frontend.

How Iwork

01

Straight answers first

Tell me what’s broken or what you want to build. I’ll tell you plainly whether I’m the right person, and what it will take.

02

Map before I move

I read the codebase and the business rules before I touch a line. Edge cases get written down, not discovered in production.

03

AI-native, with guardrails

Claude Code, skills and agents do the heavy lifting. Coding standards, type gates and reviews keep the output consistent with your architecture.

04

Ship, then stay

Small, reviewed releases. Handover docs. And I stick around: clients come back for their next product.

Skills: Frontend: React, TypeScript, Next.js, Vite, Tailwind, Redux, React Query, Router, shadcn/ui, MUI, Sass, GSAP, Vue, Angular, Storybook, Figma. Backend: Node.js, NestJS, Express, Django, Python, PostgreSQL, MongoDB, GraphQL, Redis, Prisma, Firebase, Stripe, Docker, AWS, Nginx, Zod. AI-native: Claude Code, Skills & agents, Gemini, Antigravity, Cursor, Windsurf, Copilot, OpenAI, Playwright, Puppeteer, Vitest, Jest, GitHub, Vercel, Netlify, Jira

01 / 03Where I’ve spent most of ten years

Frontend is my craft. Shipping is the job.

I started in 2016 as a frontend developer at a Chennai product studio, obsessing over UI detail. In 2018 I went independent, and in 2019 I founded Jusgoeaz Technologies - jus go easy - to design and build products for clients across 25+ industries.

Since then: procurement suites, vehicle dealer platforms, developer docs, AI sales tools, print-on-demand commerce, fintech dashboards. I work from Namakkal, Tamil Nadu, with clients in the US, Europe and India.

NFN LabsFrontend Developer2016 — 2018

FreelanceFull-stack, frontend-led2018 — Today

Jusgoeaz TechnologiesFounder2019 — Today

NFN LabsContract engineer2018 — Today

SimfoniFrontend lead2022 — Today

Tell me what’s broken, or what you’re trying to build. I’ll tell you straight whether I’m the right person for it.

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