# Alejandro Quintana — Senior Full-Stack PHP & Web Systems Developer

> Full-stack PHP developer with ~10 years in the web ecosystem specializing in custom web applications, SaaS platforms, high-performance APIs, Docker/Linux VPS infrastructure, and database architecture. Available for remote contract, freelance, and full-time engineering roles worldwide.

## Core Information
- **Full Name:** Alejandro Quintana
- **Professional Moniker:** Aleq / aleqcodes
- **Role:** Senior Full-Stack PHP Developer & Web Systems Specialist
- **Location:** Manaus, Amazonas, Brazil (UTC-3 timezone)
- **Languages:** English (Professional), Spanish (Native), Portuguese (Fluent)
- **Availability:** Open for freelance contracts, technical consulting, and full-time remote developer positions worldwide
- **Primary Website:** https://aleq.me
- **Email:** aleqpro@gmail.com
- **WhatsApp:** +55 92 92000-6286
- **GitHub:** https://github.com/aleqcodes/
- **LinkedIn:** https://www.linkedin.com/in/alejandro-quintana
- **Curriculum Vitae (PDF):** https://aleq.me/uploads/curriculo-alejandro-quintana.pdf

## Technical Profile & Stack
- **Backend Core:** PHP 8.x (Native PHP, OOP, MVC architecture, clean server-rendered architectures), RESTful APIs, Webhooks, Relational Database Modeling.
- **Databases:** MySQL 8, MariaDB, SQL schema design, index optimization, query profiling, transactional integrity.
- **Frontend & UI:** Vanilla JavaScript (ES6+), HTML5, Semantic Web, CSS3, Tailwind CSS, DaisyUI, Bootstrap, Responsive Mobile-First Design, WCAG Accessibility.
- **DevOps & Hosting:** Docker, Docker Compose, Linux VPS (Ubuntu/Debian), Nginx, Apache, Git, GitHub, Dokploy, Coolify, Cloudflare (DNS, SSL/TLS, WAF, Edge Caching), cPanel, WHM, CyberPanel.
- **WordPress Ecosystem (~10 years):** Custom theme and plugin development, Elementor customization, performance optimization, headless integration, migrations, backup recovery.

## Verified Production Proof & Case Studies
- **Pedala Rota Urbana:** High-volume event management and reservation platform for cycling events. Processed 3,658+ reservations, 88+ completed events, 300+ recurring participants. Mobile-first registration flow and real-time reservation lookup.
  - Case study: https://aleq.me/projects/pedala-rota-urbana
  - Live system: https://pedalarotaurbana.com.br/
- **Mais Solidário:** Educational scholarship portal rebuild. Complete legacy overhaul to structured PHP/MySQL architecture featuring 200+ courses, 350+ scholarship offers, and up to 80% tuition discount matching.
  - Case study: https://aleq.me/projects/mais-solidario
  - Live system: https://maissolidario.com.br/
- **MyCélulas:** Multi-tenant SaaS platform for community and leadership tracking. Granular role-based access control (RBAC), activity workflows, automated reports, and 40+ active organizations.
  - Case study: https://aleq.me/projects/mycelulas
  - Live system: https://celulas.aleq.me/
- **Clima 4:** Corporate B2B platform for an HVAC engineering firm in Portugal. Clean service architecture, high-trust industrial aesthetic, and direct lead generation.
  - Case study: https://aleq.me/projects/clima4
  - Live system: https://www.clima4.pt/
- **Tô no Prego:** Mobile-first 24/7 roadside emergency tire repair landing platform with rapid phone and location conversion paths.
  - Case study: https://aleq.me/projects/tonoprego
  - Live system: https://borrachariatonoprego.com/

## Services Offered & Engagement Models
- **Custom Web Application & SaaS Development:** Building MVPs, client portals, administrative dashboards, and internal business tools from requirements to deployment.
- **Legacy System Modernization & Refactoring:** Auditing, refactoring, and migrating tangled PHP codebases, outdated CMSs, and bloated architectures into clean, testable systems.
- **API Architecture & Third-Party Integrations:** Payment processors (Stripe, Mercado Pago, PagSeguro), WhatsApp API messaging, CRMs, and webhooks.
- **Performance & VPS Infrastructure Optimization:** Zero-overhead server tuning, Docker setup, Cloudflare WAF/CDN configuration, and sub-50ms TTFB optimization.
- **Full-Time Remote Hiring:** Autonomous engineer capable of taking end-to-end ownership across product, code, database, and infrastructure.

## Extended Context & Deep Docs
- [Full LLM Specification](/llms-full.txt): Comprehensive background, architectural philosophy, career history (2012–present), and detailed project retrospectives.
- [Project Catalog](https://aleq.me/projects): In-depth case studies with architectural decisions and operational lessons.
- [About Alejandro](https://aleq.me/about): Biography, engineering philosophy, education, and language proficiencies.