# exs.dev llms.txt

> Erick Xavier — Tech Lead | Frontend Architect | Open-Source Framework Creator. Frontend Architect with 20+ years of experience building SaaS products, developer platforms, and large-scale web applications.

Full resume in Markdown: https://exs.dev/llms-full.txt

## All Pages (25 URLs)

- [Home](https://exs.dev/): Main landing page of Erick Xavier's portfolio — Tech Lead | Frontend Architect | Open-Source Framework Creator with 20+ years of experience delivering high-impact web solutions.
- [About](https://exs.dev/readme): Frontend Architect with 20+ years of experience building SaaS products, developer platforms, and large-scale web applications.
- [Skills](https://exs.dev/skills): Top skills: Angular, Angular Signals, RxJS, TypeScript, Playwright, Claude Code, AI Agent Orchestration. Full technology stack including Agile, AI Agent Orchestration, Angular, Angular Material, Angular Signals, AWS (Lambda, EC2, S3), Bootstrap, Claude Code, Codex, CSS3, and more.
- [Languages](https://exs.dev/languages): Spoken languages: Portuguese (Native), English (Full professional proficiency).
- [Education](https://exs.dev/education): Educational background and qualifications supporting Erick Xavier's expertise in frontend development.
- [Bachelor of Technology - BTech](https://exs.dev/education/bachelor-of-technology-btech): Information Technology at Bachelor of Technology - BTech.
- [Experience](https://exs.dev/experience): Professional journey across 7 companies and roles, from enterprise SaaS to freelance consulting.
- [No-JS.dev](https://exs.dev/experience/no-js-dev): Designed and solo-shipped a complete frontend framework ecosystem (core engine, 17-plugin UI library, VS Code language server, AI skill) — the kind of surface area typically maintained by dedicated framework teams.
- [Data Virtuality / CData Software](https://exs.dev/experience/data-virtuality-cdata-software): Architected the frontend platform through a period of >40% YoY company growth, culminating in a $350M raise at $800M+ valuation.
- [Zydax Consulting](https://exs.dev/experience/zydax-consulting): Delivered the supplier portal for Drogaria Venancio, a top-10 Brazilian pharmacy chain (R$1B+ revenue, 80+ stores).
- [Mobicare](https://exs.dev/experience/mobicare): Built high-volume consent portals for Oi and Claro, operators with a combined base of 100M+ mobile subscribers.
- [United States Clients](https://exs.dev/experience/united-states-clients): Delivered AngularJS applications for U.S.-based clients.
- [Acotel](https://exs.dev/experience/acotel): Led cross-functional teams at a publicly traded company (Borsa Italiana) with subsidiaries across 8+ countries.
- [Early Experience](https://exs.dev/experience/early-experience): Developed web platforms and CMS solutions.
- [Projects](https://exs.dev/projects): Portfolio of 7 notable projects showcasing frontend development capabilities and impact.
- [No-JS.dev - HTML-First Reactive Framework](https://exs.dev/projects/no-js-dev-html-first-reactive-): Sole creator of a complete frontend framework ecosystem, from core engine to UI library to developer tooling, built around the conviction that the browser is already capable. Core framework with 142 directives: declarative HTTP (get, post, put, patch, delete), reactive binding, conditionals, loops, state management, SPA routing with guards and nested routes, built-in i18n with pluralization, animations, 32 built-in filters, head/SEO management, and DevTools. Zero JavaScript authoring, zero build process, zero dependencies — a single CDN script tag. Ecosystem (all solo-built): NoJS-Elements (17 UI element plugins), NoJS-LSP (VS Code language server with autocomplete, hover docs, and diagnostics), NoJS-Skill (Claude Code skill for guided project generation), plus 120 unit tests + 27 Playwright E2E tests with CI via GitHub Actions. Community: 75 GitHub stars, 5 forks, npm + jsDelivr CDN distribution, multilingual docs (EN/ES/PT/IT/FR), and a Discord community.
- [AI-Augmented Development Workflow](https://exs.dev/projects/ai-augmented-development-workf): Uses AI and LLMs as engineering tools to accelerate frontend development, not as a field of study or research. Operates a team of AI agents and custom skills built with strict quality and security parameters. Tools: Claude Code, Cursor, Codex, OpenCode, Ollama. Workflow: multi-agent orchestration with custom skills for code review, testing, architecture analysis, documentation, and implementation guidance. Quality gates: multiple verification iterations focused on performance — nothing is deployed without a full suite of tests, validations, and manual line-by-line code review. Scope: developer productivity tooling, sprint planning assistance, QA workflows — always as tools in service of software engineering, never as standalone AI/ML development.
- [CData Software - SAAS Products](https://exs.dev/projects/cdata-software-saas-products): Development of on-premises and SAAS products using Angular, RxJS, NgRx with full Playwright testing coverage.
- [Data Virtuality Platform](https://exs.dev/projects/data-virtuality-platform): Enterprise data virtualization platform with comprehensive testing and modern Angular architecture.
- [Venancio Provider Portal & Mobile App](https://exs.dev/projects/venancio-provider-portal-mobil): Supplier portal and mobile application for a top-10 Brazilian pharmacy chain, developed with Angular, Node.js and Flutter.
- [Skillsweet Gaming Platform](https://exs.dev/projects/skillsweet-gaming-platform): Game development platform with Unity3D for mobile and browser games, integrated with Facebook apps.
- [Carrier SMS Integration](https://exs.dev/projects/carrier-sms-integration): Mobile consent pages and services for major Brazilian carriers (Oi and Claro) with AWS microservices.
- [LinkedIn](https://exs.dev/links/linkedin): Link to Erick Xavier's LinkedIn profile for professional networking and endorsements.
- [Gmail](https://exs.dev/links/gmail): Contact Erick Xavier directly via email for inquiries and collaboration.
- [WhatsApp](https://exs.dev/links/whatsapp): Contact Erick Xavier via WhatsApp for direct communication.