System Architecture & Case Studies – Lotfi Bouakkaz
Deep-dive architectural case studies on system design decisions, complex platform integrations, real-time engines, and scalable infrastructure by Lotfi BouakkazArchitecting a Dual-Region B2B SaaS Billing Engine: Stripe Automation, Regional Payment Rails & Declarative Limit Enforcement
An end-to-end technical case study on designing a hybrid B2B SaaS billing engine for Prospectus CRM. Covers dual-region payment pipelines (Stripe USD subscriptions vs Algerian BaridiMob/CCP manual rails), idempotent webhook processing, declarative plan limit guards, and automated subscription lifecycle crons. Engineering Real-Time Isochrone Catchment Areas & Adaptive Census Population Grids for Trade-Area Analytics
An in-depth technical case study on architecting a high-throughput isochrone catchment area engine and adaptive multi-resolution census population grid for Prospectus CRM. Covers rate-limited routing queues, sub-millisecond demographic ray-casting, zoom-dependent lattice quantization, and trade-zone cannibalization modeling. Engineering a High-Performance Geospatial Engine: RBush Indexing, Supercluster Optimization & Isoband Opportunity Modeling
A deep technical case study on building a sub-millisecond GIS spatial intelligence engine for Prospectus CRM. Covers 2D R-Tree spatial indexing, server-side viewport clustering, dynamic drive-time isochrones, 5x5 blurred isoband contour gap modeling, and 60 FPS Leaflet frontend rendering. Engineering a Production WebRTC Telephony & VoIP Engine for Modern B2B CRM
An end-to-end technical case study on designing, building, and hardening an in-browser WebRTC VoIP calling engine, automated DID provisioning pipeline, idempotent billing deduction engine, and real-time audio visualization suite for Prospectus CRM. 
