Gas-optimised NFT backend with Merkle tree proof verification, per-user minting cycles, and $50K+ transaction volume — 40% gas cost reduction, 95% test coverage, zero security incidents.

Azure-to-GCP multi-cloud ETL pipeline with Dataform/BigQuery transformations and automated CI/CD across three environments — processing TB-scale retail data daily with 80% faster deployments.

Google Apps Script inventory add-on computing 64 metrics across 100k+ SKUs from four external sources — replacing a multi-hour manual consolidation with a single-click, sub-90-second refresh.

Distributed microservices architecture aggregating global hotel inventory via four specialised APIs — hybrid MongoDB/MSSQL storage, Redis caching, and 99.9% uptime for B2B travel platforms.

React 18 DeFi staking platform managing $100K+ in assets — D3.js and Recharts data visualisations, 60fps Framer Motion animations, <3s initial load, 49+ reusable components.

Full-stack GDS flight booking engine aggregating Amadeus and multi-carrier availability in real time — 50% faster search via intelligent caching, PDF ticket generation, and SSR for maximum SEO.

Python research project demonstrating residential proxy networks, JS rendering, and multi-tier extraction strategies against modern bot-detection systems.

High-conversion Next.js landing page for Tunisia's #1 party game — dark-mode glassmorphism design, WhatsApp support integration, three product editions, and 90+ Lighthouse performance score.

Solo-built full-stack art & furniture marketplace — 38 NestJS modules, 84 React pages, Stripe payments, BunnyCDN delivery, time-limited product holds, and Google Gemini AI recommendations.

Multi-agent AI orchestration (GPT-4o, Gemini, Perplexity) generating dynamic SQL audience segments from plain-language briefs — 3 days of marketing analyst work compressed to under 3 minutes.

Azure-to-GCP retail data pipeline synchronising TB-scale pricing data into BigQuery via Dataform — 99.9% availability, self-healing GKE automation, and same-day analytics for a major European retailer.

Real-time hotel inventory aggregator unifying 7+ providers (Expedia, HotelBeds, Agoda, Priceline) behind a single API — hybrid MongoDB/MSSQL storage, Redis caching, and rate-limit orchestration delivering 99.9% uptime for enterprise B2B travel platforms.

Multi-GDS real-time flight search platform (Amadeus + multi-carrier) with intelligent cache warming, RSA-encrypted booking payloads, PDF ticket generation, and sub-2s search latency — LogRocket-monitored in production.

2 500-module NestJS gateway normalising Amadeus XML into a clean REST/JSON API — Redis-backed caching cuts repeat-query latency by 60%, JWT multi-tenant auth, and XML↔JSON transformation handling millions of travel inventory lookups.

No-code form builder and BI dashboard empowering non-technical teams to design complex data-collection workflows and visualise KPIs in real time — ApexCharts analytics, Material-UI, and auto-generated API endpoints with zero code deployment.

Python/Flask CRM pipeline for the Dubai real estate market — Pandas ETL for bulk CSV ingestion, UAE phone validation, automated Twilio SMS outreach sequences, and PostgreSQL deduplication converting raw contacts into qualified sales opportunities.

Angular 19 + Express workflow automation platform that replaces a document-heavy manual process with a Google Drive–powered pipeline — Firebase real-time sync, automated filing rules, and a 4-hour administrative workflow reduced to under 15 minutes.

Bidirectional calendar sync engine keeping Google Calendar, Firestore, and third-party scheduling tools in perfect sync — node-cron scheduling, rrule-based recurring-event handling, idempotent conflict resolution, and a Swagger-documented REST API.

Concurrent Google Drive migration engine moving large-scale enterprise data with p-queue-controlled parallelism, Firebase OAuth, folder-mapping rules, and Winston audit logs — zero data loss across migrations exceeding 100 000 files.

Event-driven Node.js fulfilment engine automating the full order lifecycle — validation, inventory reservation, payment orchestration, and dispatch — with modular handler architecture, 95%+ Mocha/Chai test coverage, and Sinon mocks for zero-regression deploys.

Full-stack B2B reseller marketplace with Puppeteer/Playwright automated supplier price scraping, real-time inventory sync, and Drizzle ORM + PostgreSQL — Passport-authenticated multi-vendor access with a margin-enforcement rule engine at order submission.

Flagship SaaS platform architected as Tech Lead at Aileane — NestJS + Next.js, real-time GPS fleet tracking via SSE and Supabase Realtime, a data-driven driver-assignment rule engine, and automated EU driving-time (RSE) compliance for France's regulated passenger-transport sector.