I'm Shaad Khan, a self-taught full-stack product engineer in Delhi. I build the software businesses run on (ERPs, CRMs, payroll and booking systems) and I keep it running in production. I started in 2018 with point-of-sale systems for small shops.
Read more on zoriko.space, see my résumé, or get in touch.
| System | Used by | Evidence | |
|---|---|---|---|
| Viato: ERP for travel agencies | Travel agencies (my product) | 314 passing tests; a database per agency, provisioned automatically | viato.pro |
| Travel group platform: nine apps and their backend | A travel group (not named) | Moved off Firebase onto a server I run; 190 passing tests | Private |
| EMS Consulting: site, CRM and email inbox | Recruitment consultancy | Inbox payload 6.31 MB → 32.4 KB; ingest 988 → 198 ms | emsconsulting.in |
| Salon operations: logs, attendance, payroll | A Delhi salon | In daily use since November 2025 | Private |
Each name links to a case study: the problem, the architecture, the decisions and the bugs that mattered.
Viato ERP for Indian travel agencies. One enquiry becomes a quote, booking, ticket, GST invoice and itinerary, on the same records the team uses for attendance and approvals. Every agency gets its own database. Case study. |
EMS Consulting A recruitment consultancy's site, CRM and email inbox on Postgres: CV intake, employer requirements, invoicing and a recruiter workspace. Case study. |
TouchPDF 12 PDF tools that run entirely in your browser. Files never leave your device, and there's no sign-up or watermark. Read the code. |
SkyGuard Data-quality platform for weather station networks. It tells sensor faults from real weather and shows the evidence. Built in three days to learn a domain I'd never worked in. Read the code. |
Linkord Link-in-bio pages for creators, with payments behind signed webhooks, a media pipeline on self-hosted storage and an SSRF-hardened importer. Case study. |
Rajnish Infratech Website and lead CRM for a Class-I government infrastructure contractor. |
Most client code is private. These repositories are public:
- TouchPDF: 12 PDF tools in the browser, registry-driven, nothing uploaded.
- SkyGuard: anomaly detection for weather-station networks, with a guided code tour.
- Vaolt: shared household finances as a PWA; settlements that minimise transfers.
- UPI PayLink: turns any UPI QR into a pay link that opens the right app on Android and iOS.
- Project Rocky: a character chat app on an LLM API, installable, with an offline screen.
- ZIVO, billing for Indian retail shops that takes UPI, cash, card and khata.
- Websites for NumNum Stays, Shreeji Health Plus, riddhi.space, ContinualServe and Shree Ram Associate.
TypeScript, React and Next.js on the front; Node.js, PostgreSQL, SQLite, Firebase and Supabase behind. I deploy to Vercel, Cloudflare, or Linux servers I manage, and I use LLM APIs where they earn their place.