GiovanniColonni

Full-stack engineer with four years across fintech, e-commerce, DevOps, and AI. I ship end-to-end—from React and Node.js to Terraform, Kubernetes, and GitOps on Azure—and build AI through RAG, LLM integrations, and MCP servers tied to live business data.

• Paage

  February 2026 — May 2026

  Fullstack Tech Lead

  Paris, FR

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  Fullstack Tech Lead · Paris, FR

  UGC link-in-bio platform extended with verticals: restaurant-SaaS integrations (e.g. L'Addition) and in-page e-commerce for physical/digital products and events. Joined as Tech Lead — 40% leadership, 60% hands-on delivery.

  • Led the engineering team end-to-end—owning architecture, code review, and roadmap—while shipping core product features myself.
  • UI performance overhaul — cut P99 total page load from 17s → 3s (~83% reduction) by refactoring client-side fetch and data-loading logic, optimising backend API endpoints, and applying targeted React rendering optimisations.
  • Intelligence pipeline (Scrape + RAG + LLMs + Analysis) — end-to-end system for data collection, classification, and clustering using RAG, LLM orchestration, embeddings, and clustering to derive the classification topology. Production pipeline (retrieval, vector storage, eval loop, observability) — powering UX personalisation and product-page SEO to cut churn from misaligned messaging.
• Feefty

  May 2024 — February 2026

  Software Engineer · Fintech

  Paris, FR

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• Amadeus

  January 2023 — May 2024

  DevOps Engineer

  Nice, FR

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• Fragsy

  August 2022 — October 2023

  Backend Engineer & Solidity Developer

  Remote

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