Print Clublive
A complete 3D-printing storefront: catalog commerce, custom STL quotes, customer accounts, Cashfree checkout, and an admin workspace for products, orders, quotes, content, and pricing.
next.js · postgres · three.js · cashfree · r2FIG. 01AfterBoards
Live · in production
AfterBoards
& AfterGrad
Live · in production- One shared product codebase4 apps · 17 pkgs
Two Next.js web apps and two Expo mobile apps share auth, UI, server actions, and product logic through a Turborepo monorepo.
- Reconciliation-safe payouts
Prevented double-payouts by treating gateway failures by certainty: release funds only on a provable failure; keep ambiguous transfers pending until webhook, status reconcile, or admin review resolves them.
- Real-time multiplayer6-player rooms
Ably multiplayer with scoped client tokens, server-authoritative scoring, atomic double-score prevention, and coordinator failover.
- Timed exam engine100,000+ attempts
Resumable timed attempts, server-authoritative scoring, section-wise analytics, and disconnect recovery across 100,000+ attempts.
- AI question workflowdays → ~30 min
Versioned prompts, multi-provider fallback, and batch generation/review workflows cut exam creation from days to ~30 minutes.
- Redis resilience
Redis failures made survivable with typed cache keys, singleflight stampede protection, negative caching, and circuit-breaker fallbacks.
- Native mobile operationsiOS · Android
Two Expo apps add native push, Face ID app lock, deep links, haptics, store-safe payments, and shared hybrid product screens.
Two exam-prep products — AfterBoards (IPMAT / CUET) and AfterGrad (CAT) — delivered as four production apps on one 17-package monorepo and run end to end by one engineer.
- Money has to be exactly right — settlement is idempotent and reconciliation-safe.
- The AI pipeline is a system, not a prompt — versioned, multi-provider, with automatic fallback.
- One Turborepo codebase spans web + React Native across both products.
Next.jsReact NativeMongoDBPaymentsAI