https://ezequielcarrizo.com Ezequiel Carrizo is a lead software engineer at The Knot Worldwide who builds and runs three live products: Fabiana, WardenAuth and Interview Sparring. en https://ezequielcarrizo.com/blog/engineering/rebuilding-my-site-zero-javascript/ https://ezequielcarrizo.com/blog/engineering/rebuilding-my-site-zero-javascript/ Wed, 28 Oct 2026 00:00:00 GMT How I rebuilt ezequielcarrizo.com as a static Next.js 16 site with no client JavaScript, no backend and no analytics, and what it took to reach 100 on every Lighthouse category on mobile. https://ezequielcarrizo.com/blog/engineering/how-fabiana-answers-customers/ https://ezequielcarrizo.com/blog/engineering/how-fabiana-answers-customers/ Wed, 28 Oct 2026 00:00:00 GMT The architecture behind Fabiana, my AI assistant that answers customers on WhatsApp, email, chat and the phone: an SQS pipeline on Lambda, one structured LLM call per message, and no fixed costs. https://ezequielcarrizo.com/blog/engineering/how-wardenauth-decides/ https://ezequielcarrizo.com/blog/engineering/how-wardenauth-decides/ Wed, 28 Oct 2026 00:00:00 GMT How WardenAuth, my authorization API, decides every access check: scopes that inherit, deny-wins policies, an answer that explains itself, and AI agents capped by the user they act for. https://ezequielcarrizo.com/blog/engineering/monorepo-sst-aws-typescript/ https://ezequielcarrizo.com/blog/engineering/monorepo-sst-aws-typescript/ Tue, 14 Jul 2026 00:00:00 GMT How I structured a production monorepo with SST v3: infrastructure-as-code, PR previews, multi-environment deployment, and cost optimization. https://ezequielcarrizo.com/blog/engineering/scaling-content-seo-101-guides/ https://ezequielcarrizo.com/blog/engineering/scaling-content-seo-101-guides/ Wed, 08 Apr 2026 00:00:00 GMT How I wrote and structured 101 interview tip guides for SEO: keyword research, content hierarchy, internationalization, and reaching page one. https://ezequielcarrizo.com/blog/engineering/ai-mock-interview-platform-architecture/ https://ezequielcarrizo.com/blog/engineering/ai-mock-interview-platform-architecture/ Wed, 21 Jan 2026 00:00:00 GMT The architecture behind Interview Sparring: how AI-powered mock interviews work, from real-time speech analysis to adaptive scoring and feedback. https://ezequielcarrizo.com/blog/engineering/ddd-serverless-lambdas/ https://ezequielcarrizo.com/blog/engineering/ddd-serverless-lambdas/ Fri, 23 May 2025 00:00:00 GMT Applying Domain-Driven Design principles to serverless Lambda functions: bounded contexts, repository pattern, and dependency injection with tsyringe. https://ezequielcarrizo.com/blog/engineering/aws-ses-serverless-email/ https://ezequielcarrizo.com/blog/engineering/aws-ses-serverless-email/ Thu, 10 Apr 2025 00:00:00 GMT How I set up transactional email with Amazon SES from Lambda functions: domain verification, bounce handling, and staying out of the spam folder. https://ezequielcarrizo.com/blog/engineering/building-reusable-ui-library/ https://ezequielcarrizo.com/blog/engineering/building-reusable-ui-library/ Fri, 14 Mar 2025 00:00:00 GMT The design decisions behind a production-ready React component library: composability, accessibility, and why I built it from scratch. https://ezequielcarrizo.com/blog/engineering/leading-cross-functional-teams/ https://ezequielcarrizo.com/blog/engineering/leading-cross-functional-teams/ Sat, 22 Feb 2025 00:00:00 GMT Real lessons from two years as Technical Software Lead: stakeholder management, risk mitigation, and building high-trust engineering cultures. https://ezequielcarrizo.com/blog/engineering/ic-to-tech-lead/ https://ezequielcarrizo.com/blog/engineering/ic-to-tech-lead/ Sat, 18 Jan 2025 00:00:00 GMT The transition from individual contributor to tech lead is harder than it looks. Here is what I learned making that shift at The Knot Worldwide. https://ezequielcarrizo.com/blog/engineering/2024-year-in-review/ https://ezequielcarrizo.com/blog/engineering/2024-year-in-review/ Fri, 20 Dec 2024 00:00:00 GMT Reflecting on a year of growth: from earning my AWS certification to completing a car restoration and rebuilding this very blog. https://ezequielcarrizo.com/blog/engineering/hidden-cost-dependencies/ https://ezequielcarrizo.com/blog/engineering/hidden-cost-dependencies/ Fri, 08 Nov 2024 00:00:00 GMT A critical look at dependency bloat in modern JavaScript projects and strategies to keep your bundle lean without sacrificing productivity. https://ezequielcarrizo.com/blog/engineering/typescript-patterns-5-years-later/ https://ezequielcarrizo.com/blog/engineering/typescript-patterns-5-years-later/ Sat, 12 Oct 2024 00:00:00 GMT Practical TypeScript patterns that changed how I write code: template literal types, type guards, satisfies, and const assertions. https://ezequielcarrizo.com/blog/engineering/how-i-built-seo-blog-nextjs-static/ https://ezequielcarrizo.com/blog/engineering/how-i-built-seo-blog-nextjs-static/ Sun, 15 Sep 2024 00:00:00 GMT A deep dive into the architecture of my personal site: static export, sitemaps, metadata, and why I chose serverless over a CMS. https://ezequielcarrizo.com/blog/programming/javascript-conditionals-comparison-and-logical-operators/ https://ezequielcarrizo.com/blog/programming/javascript-conditionals-comparison-and-logical-operators/ Tue, 06 Aug 2024 00:00:00 GMT How to write AND, OR and NOT conditions in a JavaScript if statement, plus equals and not equals (=== and !==), with short examples for beginners. https://ezequielcarrizo.com/blog/programming/jumpstart-your-coding-journey-with-javascript/ https://ezequielcarrizo.com/blog/programming/jumpstart-your-coding-journey-with-javascript/ Thu, 01 Aug 2024 00:00:00 GMT Get started with JavaScript programming with this beginner-friendly guide. Learn the basics and kickstart your coding journey. https://ezequielcarrizo.com/blog/engineering/perfect-lighthouse-score/ https://ezequielcarrizo.com/blog/engineering/perfect-lighthouse-score/ Mon, 15 Jul 2024 00:00:00 GMT The concrete steps I took to hit 100 on all four Lighthouse categories: Performance, Accessibility, Best Practices, and SEO on a Next.js static site. https://ezequielcarrizo.com/blog/cars/dodge-coronado-1968/ https://ezequielcarrizo.com/blog/cars/dodge-coronado-1968/ Thu, 20 Jun 2024 00:00:00 GMT The Dodge Coronado 1968 is a car that I restored in 2021. It was a great project that I enjoyed a lot.