00 / OPERATOR · DARSH GUPTA
Full-stack engineer, platform architect, and JS library author. Six years of end-to-end ownership across product, design, frontend, backend, and infra — for founders, brands, and ambitious teams.
01 / MANIFESTO
The shape of the work.
From blank canvas to production. Design, frontend, backend, infra — one operator, full stack, zero hand-offs.
I don't ship apps in isolation — I ship platforms. A 63-module NestJS backbone (139 Prisma models) powers ~25 frontends through a single SDK. A line of six hand-rolled, MIT-licensed JavaScript libraries ships ESM + UMD + .d.ts via Rollup, and composes into a 60-FPS twin-stick shooter that proves they integrate.
The work is named, paid, and live. A burger restaurant. A boutique hotel. A unisex salon. Twenty-four production systems. Six OSS libraries. Fifty engineers mentored. One operator.
02 / THE BIG THREE
Skim these first. Each is the load-bearing answer to a different question about the practice.
A 63-module multi-tenant NestJS backbone powering ~25 frontends through a single SDK.
MIT-licensed, zero-dependency, ESM + UMD + .d.ts via Rollup. Composed into a 3-game arcade — ORBIT, REWIND, TABTRIVIA — that ships every library at once.
Paid, named-client deliveries — distinct from the template fleet.
03 / SELECTED WORK
Public production systems shipped end-to-end — design, frontend, backend, infra. Each item is a complete deliverable, not a template clone.
Real client · Boutique hotel
Luxury booking with hold-timer reservations and 12-screen admin. Offline IndexedDB mock layer for demo. Tan + black + gold aesthetic, ISR-powered booking pages.
Premium digital banking
“Banking, Refined.” UPI / NEFT / RTGS / IMPS, AI analytics, card controls, OTP + biometric login, AES-256 encryption. Glass morphism, sub-300ms API target.
Social cinema platform
Pay-per-minute movie streaming with Google Drive room hosting. Dual viewing modes — Sync (lockstep broadcast) and Solo. Real-time chat overlay, wallet, host earnings dashboard.
Coaching institute platform
4 roles (Student / Teacher / Parent / Institute Admin). Live whiteboard, hand-raise queue, screen share, recording. JEE / NEET / UPSC / CAT / GATE / Boards. Institute revenue tracking.
▍ ALL DEPLOYED WORK · 21 LIVE
Click any name to open the live demo. Source on GitHub.
Banking
Automotive
Florist
F&B · Real client
Interior Design
Restaurant
Fitness
Furniture
OSS · History API
EdTech
Health
Pet
Streaming
OSS · 6-lib arcade
Gig
Fashion
SaaS
OSS · Cross-tab
Salon · Real client
Hospitality · Real client
Wellness
Marketing
Platform API
04 / OPEN SOURCE
MIT-licensed. All six are zero-dependency, single-script-tag-friendly, and ship ESM + UMD + .d.ts via Rollup. Composed into Playground — a 3-game arcade at playground.work.withdarsh.com shipping every library on one HTML file.
MIT · 0 DEPS · ESM + UMD + .d.ts
20-module zero-dependency SPA framework. Singleton API: router, state, hooks, i18n, IndexedDB, PWA, mock APIs, templating, events. Self-hosting docs.
MIT · 0 DEPS · ESM + UMD + .d.ts
Hotkey + sequence + chord + scope + layout + recorder. Three-phase detection. Showcase: Snake + Vim palette + Konami.
MIT · 0 DEPS · ESM + UMD + .d.ts
Pointer / gesture / cursor library. Unifies mouse, touch, pen, trackpad via Pointer Events. 7 gestures, cursor effects.
MIT · 0 DEPS · ESM + UMD + .d.ts
Element-vs-element collision. Single shared RAF loop. Pair API emits near/collide/separate/leave/tick with rich metrics.
MIT · 0 DEPS · ESM + UMD + .d.ts
Cross-tab communication, shared state, presence, leader election, locks, duplicate detection, and request/response — over BroadcastChannel with a localStorage fallback. Typed, framework-agnostic.
MIT · 0 DEPS · ESM + UMD + .d.ts
Modern typed wrapper over the browser History API — the 2026 successor to browserstate/history.js. Typed entries, async guards, query helpers, route matcher, link interception, virtual stack.
MIT · WEBPACK · ESM + UMD + .d.ts
Webpack-bundled standalone SPA framework. BRD-complete MVP, 13 modules. Predates AuraJS — the no-build pivot.
A 3-game arcade that ships all six libraries at once. HistoryJS routes between games, TabJS runs cross-tab presence and a leader-elected physics owner. ORBIT (twin-stick shooter using CollideJS TTC, KeyBoardJS chords, MousePadJS aim), REWIND (Sokoban where every move is a router.push() — browser back is undo), TABTRIVIA (first-to-buzz quiz where tabs.lock() arbitrates the race). Single static HTML file. No build step.
05 / SERVICE RECORD
From WordPress at a brand platform to independent practice — a single thread of end-to-end ownership.
FEB 2020 → PRESENT
Santa Monica, CA · Remote
● Software Development & Security Studio
JAN 2024 → PRESENT
Remote · Worldwide
● Independent · Self-employed
OCT 2021 → DEC 2023
Singapore
● EdTech Growth Platform
NOV 2021 → JUN 2022
London, UK
● E-Commerce Brand Platform
06 / LOADOUT
Validated by repeated use across 24+ shipped systems. Convergent — not kitchen-sink — but covers product, platform, payments, real-time and automation.
01 ▍ FRONTEND
02 ▍ BACKEND & DATA
03 ▍ STATE / VALIDATION
04 ▍ REALTIME & MEDIA
05 ▍ AUTH & SECURITY
06 ▍ INTEGRATIONS
07 ▍ INFRA & DEVOPS
08 ▍ PRACTICE
07 / ENGAGE OPERATOR
FASTEST PATH TO A REPLY · TYPICALLY UNDER 24 HOURS
LOCATION
Mumbai, India
UTC+05:30 · IST
workwithdarsh↗
Open to remote
GITHUB
buildwithdarsh↗
Six OSS libraries