https://parvejshah.com/blog Technical deep dives on Next.js App Router, real-time telephony voice AI pipelines, deterministic multi-agent state machines, and high-concurrency backend architectures. en-US Wed, 26 Aug 2026 20:33:56 GMT https://parvejshah.com/og.jpg https://parvejshah.com https://parvejshah.com/blog/architecting-sub-18s-voice-ai-pipelines https://parvejshah.com/blog/architecting-sub-18s-voice-ai-pipelines Building the telephony dispatcher for Minions.AI meant confronting a hard constraint: human patience. On a phone call, two seconds of silence feels like a dropped connection. Here's how we redesigned the audio pipeline from the ground up. Sun, 15 Feb 2026 09:00:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/deterministic-multi-agent-systems-production https://parvejshah.com/blog/deterministic-multi-agent-systems-production Open-ended multi-agent loops sound powerful in demos. In production, they produce inconsistent outputs, accumulate context garbage, and are nearly impossible to debug. Here's what we built instead. Tue, 10 Feb 2026 10:30:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/engineering-precision-data-platforms-sft-rlhf https://parvejshah.com/blog/engineering-precision-data-platforms-sft-rlhf When GenMorphics AI Solutions needed a platform to coordinate their global team of domain experts, the challenge wasn't the AI — it was access control, skill verification, and making sure the right task reached the right person. Mon, 02 Feb 2026 14:00:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/conversational-commerce-webhook-architecture https://parvejshah.com/blog/conversational-commerce-webhook-architecture SellerVai processes orders through WhatsApp, Facebook Messenger, and Telegram. During peak traffic, webhook delivery gets messy. Here's the architecture that keeps every message processed exactly once. Wed, 28 Jan 2026 11:15:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/rendering-katex-formulas-nextjs-server-components https://parvejshah.com/blog/rendering-katex-formulas-nextjs-server-components Client-side math rendering causes layout shifts and JavaScript bloat. For MathPro Academy's mobile-first student base, we moved formula compilation to the server entirely. Here's what that looks like in practice. Tue, 20 Jan 2026 16:45:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/defensive-webhook-engineering-payment-gateways https://parvejshah.com/blog/defensive-webhook-engineering-payment-gateways Double enrollments, missed payments, and replay attacks: the ways payment webhook handlers go wrong in production are specific and preventable. This is what we built for MathPro Academy's bKash and Nagad integrations. Wed, 14 Jan 2026 08:20:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/building-manifest-v3-ai-chrome-extensions https://parvejshah.com/blog/building-manifest-v3-ai-chrome-extensions Building a Chrome extension that injects a UI component into LinkedIn's feed seems simple. It isn't. Shadow DOM isolation, Manifest V3 service worker constraints, and host page style conflicts all need deliberate solutions. Thu, 08 Jan 2026 12:00:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/offline-first-pwa-emergency-volunteer-networks https://parvejshah.com/blog/offline-first-pwa-emergency-volunteer-networks Badhan's blood donor platform for Amar Ekushey Hall needed to work in hospital basements, rural clinics, and emergency wards with no connectivity. Offline-first isn't a feature — it's an architecture decision made early. Fri, 02 Jan 2026 09:30:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/scaling-competitive-programming-lms-architectures https://parvejshah.com/blog/scaling-competitive-programming-lms-architectures How do you structure a competitive programming course so students build skills in the right order? How do you track daily streaks without race conditions when thousands of students submit near midnight? This is what we built. Wed, 24 Dec 2025 14:10:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/cryptographic-credential-verification-institutional-web https://parvejshah.com/blog/cryptographic-credential-verification-institutional-web CPRBD at the University of Dhaka needed a way for employers to verify that a professional certificate was legitimate. The solution turned out to be simpler than you'd think: HMAC hashes, a verification endpoint, and QR codes. Thu, 18 Dec 2025 10:00:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/nextjs-16-turbopack-deep-dive https://parvejshah.com/blog/nextjs-16-turbopack-deep-dive React Server Components aren't just a build optimization — they change how you think about where code runs and why. Here's what the migration looked like on a real project and where the component boundary decisions were non-obvious. Wed, 10 Dec 2025 15:30:00 GMT parvejshahlabib007@gmail.com (Parvej Shah) https://parvejshah.com/blog/craft-of-high-velocity-software-delivery https://parvejshah.com/blog/craft-of-high-velocity-software-delivery Every few months a new framework or runtime promises to fix problems I don't have. Here's the case for PostgreSQL, TypeScript, and Next.js — and more importantly, the case for stopping the search. Mon, 01 Dec 2025 11:00:00 GMT parvejshahlabib007@gmail.com (Parvej Shah)