Ralph ChristianGabriel.

The business support system (BSS) of a mobile carrier: number portability, line activation, billing, MFA and fraud screening. The system moves from synchronous microservices to an event-driven architecture — 6 hexagonal services, no direct service-to-service HTTP in the business flow, a choreographed saga over RabbitMQ with compensation, a transactional Outbox, a dead-letter queue and distributed tracing. Two real external integrations sit behind an anti-corruption layer: free5GC (5G core, MSISDN provisioning through the UDM APIs) and a Java number-portability hub, acting as both recipient and donor, over signature-verified TMF Event v4 webhooks. What I take from it isn't the pattern checklist but how the optimization was run: five stages, each measured and recorded, including the one that produced nothing. Stage 2 is the instructive one — speeding up publication improved acknowledgement without improving convergence, because the bottleneck had moved to svc-subscription; measurement located it (3,960 messages queued on a single consumer) and the later stages addressed it. Final result: acknowledgement P95 divided by 2.4, saga convergence up from 47% to 100%, zero errors across 22,031 requests.

Takeover and redesign of the site of an internationally awarded pet photographer (TIPPA 2024-2025, Bronze) whose Wix site had been left unfinished. A complete first-paying-client process: a 60-question Word discovery form, a 9-slide PowerPoint deck to frame the call, a structured Claude Design brief, then a generated mockup implemented in code. Across iterations the prototype grew from a single home page into a full, interactive mockup: multi-page (home, portfolio gallery, distinctions page), around fifteen modular sections (hero, counters, process, packages, testimonials, shop, client area, newsletter, FAQ, rainbow bridge…), real awarded photos organised by category, a smart carousel with lightbox and a signature thread "sewn" along the scroll. All bilingual FR/EN, light/dark, with an audience switcher (consumer/commercial), an editorial gold identity (Cormorant Garamond + Mulish), light image protection and a concierge assistant leading to real contact. A built-in admin mode — "bounded freedom" — lets you edit content and appearance, hide/reorder sections and manage promo codes, to absorb the client's feedback without ever breaking the mockup.

Design and interactive prototype of BOA, chef Max's private-chef and table-service brand in Montreal. Built from a client-filled PRD (Word document) and a competitive analysis (Take a Chef, The Culinistas, Cozymeal, Tock), the site sells an experience — "When the love for food meets unforgettable memories" — rather than plain catering: private dinners, weddings, birthdays and corporate events, cooked and served at your home. The mockup covers the whole journey: an editorial home (hero, "the art of hosting" pillars, trust strip, "what's included"), a culinary concierge that recommends a menu in 30 seconds (occasion, guests, budget, restrictions), the menus (fixed / event / call required), experiences, venues, a photo gallery, the chef's story and contact. At its core is a multi-step booking flow: menu → date (2-week minimum lead time, last-minute fees flagged, "notify me" waitlist) → format (table service / chef's table / event), guests (capped at 20, 20+ → mandatory call), address (Island of Montreal · distance-based fee) and allergies → summary (25% non-refundable deposit, balance per agreement, taxes not applied) → mocked payment (card / debit / Interac) → confirmation (deposit received, 48h reminder, notification to Max). It also ships a guided "BOA Concierge" chatbot, an FR/EN switcher, a burgundy & cream light/dark theme (Newsreader + Hanken Grotesk + Allura), premium animations honouring prefers-reduced-motion, and an admin mode with drag-and-drop photo slots to wire in real images. Everything is cleanly mocked — no real payment, no live AI — pending decisions on pricing, calendar (Calendly), payment processor (Stripe / Square) and legal copy (Loi 25) with the client.

Complete redesign mockup for the Cornwall Rex Club of Canada (bilingual nonprofit breeder community). Static multi-page site organised around three journeys — adopt a kitten, become a member breeder, support the club. 10 pages (Home, The Breed, Breeder Directory, Codes & Ethics, By-laws, Publications, Membership, Board & Committees, Contact) with an interactive anatomy explorer, a filterable distribution map and a Red & White identity derived from the official logo. Bilingual FR/EN with instant toggle, light/dark theme, mobile-first (375px → desktop), WCAG 2.2 AA accessibility, no backend. Real data integrated (11 catteries, Anima-Québec badges, 7 feline associations, official resources), without inventing or overpromising.