Aryan Garg

Embeddable customer-feedback platform (NPS/CSAT/text surveys) with AI insight extraction. The engineering showcase is a dual-bundle frontend: a <30KB Preact widget that runs inside arbitrary third-party host sites via closed Shadow DOM, paired with a React 19 dashboard streaming live updates over SSE.

Featured

• Sub-30KB embeddable widget — Preact + Vite IIFE library mode, closed Shadow DOM isolation, CI hard-fails over the 30KB gzipped budget
• Two-trust-domain security model — HMAC-signed embed tokens (replay-protected via Redis nonces, timingSafeEqual) for untrusted host sites; Clerk bearer auth for the dashboard
• Three distinct AI integration patterns — async BullMQ batch (theme/sentiment), on-demand sync (question improvement), and scheduled two-stage anomaly detection (z-score pre-filter → LLM)
• Live dashboard over SSE — per-org Redis pub/sub channels, 25s heartbeats, auto-reconnect with polling fallback
• Multi-tenant isolation — orgId always derived from token, never request body; per-org Redis channels
• Stripe usage-based billing — Redis INCR metering, hourly flush to Stripe, idempotent webhooks

A visual floor-plan & live-operations platform for independent restaurants. Design your dining room on a canvas, then run service in real time with multi-device sync, reservations, and offline-first PWA support.

Featured

• Konva canvas floor-plan editor — drag-and-drop table layout, versioned design-time positions kept separate from live runtime state
• Socket.IO real-time multi-user sync — last-write-wins conflict resolution on a per-table version counter (verified 29ms two-device latency), fanned out via Upstash Redis
• Offline-first PWA using all four browser storage layers, with a custom Workbox service worker (injectManifest) owning the Web Push handler
• Dual-channel notifications — guaranteed email (Resend) + fire-and-forget Web Push (VAPID)
• Append-only audit log drives analytics — turn time, covers-per-hour, and no-show rate computed from TableEvent history, not live aggregates
• Multi-tenant security — restaurantId scoped from JWT claims, Stripe webhooks idempotent and raw-body verified
• Self-hosted logging dashboard with PII-scrubbing client logger

A multi-vendor event ticketing platform. Organizers publish event pages, sell tiered tickets via Stripe, issue QR-coded tickets, and check attendees in from a mobile door app. Ticketing for independent organizers, without the Eventbrite tax.

Featured

• Oversell-proof checkout — Stripe Checkout backed by per-tier Redis locks + an idempotent webhook, so the last ticket never double-sells
• Signed QR tickets (JWT) + an installable check-in PWA with atomic, double-scan-proof check-in
• Plan-gated AI (Groq) — event descriptions, category/tag suggestions, and plain-English sales insights, locked to paid tiers
• Stripe subscription billing (Free/Pro/Business) with a self-serve membership page
• Live organizer analytics (Recharts, polling) + CSV attendee export
• Production auth with Clerk (Google sign-in) + webhook user-sync; abandoned-cart sweep cron
• Calm, accessible "Sense"-inspired UI: shimmer skeletons, interactive hero bento, keyboard shortcuts, light/dark