Lead Full-Stack Web Developer & Platform Architect based in Dhaka, Bangladesh.
Focused on Next.js React Server Components, real-time telephony voice AI pipelines, high-concurrency webhook ingestion, and offline-first web applications.
🌐 Portfolio & Case Studies: parvejshah.com
📫 Contact: parvejshahlabib007@gmail.com · LinkedIn · X / Twitter
| System | Role / Focus | Architecture / Stack | Production Highlight |
|---|---|---|---|
| Minions.AI | AI Voice & Telephony Engineer | Next.js, WebRTC/SIP, Neural VAD, TypeScript FSM, Cloudflare R2 | Sub-1.8s voice round-trip answering pipeline with speculative tool pre-fetching & deterministic state machine content engine. |
| GenMorphics AI | Full-Stack Platform Engineer | Next.js 15, Turbopack, Supabase RLS, OAuth 2.0 (Azure AD/Google) | Enterprise workforce dashboard coordinating specialized domain experts with multi-tier RBAC and short-lived signed asset tokens. |
| MathPro Academy | Lead Developer & Architect | Next.js RSC, KaTeX SSR, PostgreSQL, Prisma, bKash & Nagad APIs | Server-side KaTeX rendering (0kB client JS math parser, 0 CLS) & idempotent MFS payment webhook fulfillment serving 4,000+ students. |
| Badhan Blood Network | Lead Developer & Architect | Next.js, React, Prisma ORM, IndexedDB, Workbox PWA | Offline-first PWA with sub-10ms local donor search for Amar Ekushey Hall Unit (DU) across 590+ emergency donations. |
| SellerVai | Full-Stack & AI Engineer | Next.js, Node.js, BullMQ, Redis, WhatsApp/Messenger APIs | Stateless webhook ingestion (<15ms 200 OK) with SHA-256 Redis deduplication absorbing 15x flash sale traffic spikes. |
| CPRBD DU | Lead Web Developer | Next.js App Router, Radix UI, PostgreSQL, HMAC-SHA256 | Public academic credential verification engine for University of Dhaka with timing-safe HMAC checks & bulk QR generation. |
- 🎙️ How We Got Voice AI Response Times Under 1.8 Seconds on Real Phone Calls
- 💳 Payment Webhook Mistakes You Only Make Once (bKash & Nagad Idempotency)
- 📐 Rendering Math Formulas Without Making Students Wait (Server-Side KaTeX)
- ⚡ Why We Stopped Using LLM Agents to Control LLM Agents (Deterministic FSM)
- 🌐 Building Software for Places Where the Internet Doesn't Work (Offline-First PWA)
- Frontend & Frameworks: Next.js (App Router, Turbopack, RSC), React 19, TypeScript, Tailwind CSS, Radix UI.
- Backend & Realtime: Node.js, Express, BullMQ, Redis, WebSockets, WebRTC/SIP Telephony.
- Databases & ORM: PostgreSQL, Prisma ORM, Supabase (RLS, Auth), MongoDB.
- Cloud & Infrastructure: Vercel Edge Network, Cloudflare (DNS, R2 Storage, Workers), Docker.
