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-seven 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 · F&B
Dual Mode UI (Classic mustard + Anton vs Healthy sage + Playfair). PetPooja POS sync, Razorpay, WhatsApp ordering, coin loyalty, student pass, referrals.
Real client · Premium salon
Glamour Waves Unisex Salon. Dark + gold aesthetic, founder timeline, WhatsApp booking fallback, CMS-driven services, LocalBusiness schema, 90+ Lighthouse.
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.
Digital magazine
36 original long reads set like a modern broadsheet, sidenotes beside the sentence they annotate, and a meter you can see: 3 free articles a month, the body streamed as a Cache Components hole. Paper/Sepia/Night, quote cards, RSS.
Architecture studio
16 case studies with sticky facts sheets and 75 plans, sections and elevations you zoom 1–8× with a true scale bar, in an intercepted lightbox. G for the 12-column grid, B for blueprint mode. Every render comes from an in-repo ray tracer.
Uptime monitoring SaaS
24 simulated checks from 5 regions with live polling, incident update trails, a postmortem editor, on-call rotations and a status page builder. Public status pages are classic ISR, readable without JavaScript. Vim chords and a : command bar.
Vinyl marketplace
Multi-seller record shop with Goldmine grades for record and sleeve, an intercepted quick-look with sleeve-morph view transitions, faceted browse, per-seller shipping, price history by grade and Crate Dig: a seeded, swipeable shuffle.
Climate tech SaaS
Measure, reduce, then compensate. A four-step footprint calculator on Server Actions that works with JavaScript off, a tree-ring chart of 24 months, optimistic check-ins, 20 offset projects and HMAC-signed certificates.
Product analytics SaaS
Funnels, 12-week retention cohorts, nested AND/OR segments and a live event stream over a seeded event log. A static shell with 13 streamed widgets, a URL-held date range with compare, a parallel-route drawer, ⌘K and 25 shortcuts.
Spaceflight booking
Suborbital, orbital and lunar missions behind a mission-control UI: 18 missions, a 6-step booking with an ARIA capsule seat map, a static shell with streamed inventory and View Transitions.
▍ ALL DEPLOYED WORK · 29 LIVE
Click any name to open the live demo.
Aerospace
Banking
Automotive
Florist
F&B · Real client
Climate Tech
Music Marketplace
Interior Design
Restaurant
Fitness
Furniture
Uptime Monitoring
OSS · History API
EdTech
Health
Architecture
Pet
Streaming
OSS · 6-lib arcade
Product Analytics
Gig
Fashion
SaaS
OSS · Cross-tab
Digital Magazine
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 27+ 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↗
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GITHUB
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Six OSS libraries