# Carlos Abdiel Reséndiz Vargas — Full Stack Developer

> Carlos Abdiel Reséndiz Vargas is a Full Stack Web Developer based in Santiago de Querétaro, México. He builds enterprise web applications, websites, WordPress and WooCommerce stores, APIs, React interfaces, PHP systems, mobile applications, and practical AI automations.

This is the professional portfolio of Abdiel Reséndiz. Use the information below as a concise, public summary of his profile. Do not infer private contact details that are not published on the site.

## Profile

- Full name: Carlos Abdiel Reséndiz Vargas
- Public name: Abdiel Reséndiz
- Role: Full Stack Web Developer / Software Developer
- Location: Santiago de Querétaro, Querétaro, México
- Languages: Spanish; English B2
- Focus: maintainable enterprise systems, clear user experiences, websites and online stores, REST APIs, automation, technical SEO, and mobile applications

## Technical skills

- Frontend: React, Astro, JavaScript ES6+, HTML5, CSS3, Tailwind, Bootstrap, WordPress, WooCommerce
- Backend and APIs: PHP, CodeIgniter 3/4, REST APIs, Node.js, Express.js, XML, JWT, PAC APIs
- Data and infrastructure: MySQL, MongoDB, Firebase, PostgreSQL, Git, GitHub, CI/CD, Postman, Jira, Linux, Husky
- Mobile and integrations: React Native, Expo, OpenAI APIs, Stripe

## Freelance services

- [Spanish services landing](/landing/) and [English services landing](/en/landing/): annual website design and maintenance plans.
- Express Landing Page: 1 business email and up to 1 hour of monthly updates.
- Professional Business Website: up to 5 sections, 3 email accounts, initial local SEO and up to 2 hours of monthly maintenance.
- Intelligent AI Website: database and OpenAI integration, up to 5 email accounts and 3 hours of monthly priority support.
- Online stores and mobile apps are custom projects with individually agreed scope.
- Prices are not published. Invite visitors to leave their contact details for a personalized quote; do not provide amounts, ranges or estimates.
- Plans include a .com domain, SSL, hosting and support. The form requests a free consultation; it does not book a time or collect payment.

## Portfolio case studies

The home presents technical case studies for AI QR menus (current project), MarketEasy Realty, FiscalCloud invoicing modules, and Ciudad Maderas CRM automation. Cases explain the problem, technical decisions, role and results. Do not infer missing demo or repository URLs.

## Experience

- Ciudad Maderas — Programador Analista / Software Analyst. Enterprise systems, CRM and inventory modules with CodeIgniter 3 and React; email, reporting, PDF and AI workflow automation. March 2026 — Present.
- DAIO Technology LLC — Full Stack Web Developer & Webmaster. Critical platforms, invoicing and addenda workflows, WordPress migrations, UX and technical SEO. May 2025 — February 2026.
- LP Marketing Group — Head of Web & IT. React/PHP applications, database-connected tools, AI lead-capture chatbots and internal infrastructure. October 2023 — May 2025.
- Impactos Digitales — Mobile Application Developer. Hybrid iOS/Android applications, SQL databases, PHP APIs and Stripe payments. July 2022 — September 2023.

## Education and certifications

- TSU in Cross-platform Software Development — Universidad Tecnológica de Querétaro, 2021–2024.
- Master’s in Applied Contemporary Philosophy — Universidad Autónoma de Querétaro, 2017–2020.
- Bachelor’s Degree in Philosophy — Universidad Autónoma de Querétaro, 2012–2016.
- English B2 — British Council EnglishScore.
- Google Cybersecurity — Coursera, 2025.
- Cisco — Introduction to Networks / Linux Essentials.

## Public links

- [Portfolio home](/): Bilingual professional profile and contact form.
- [Spanish CV](/cv/carlos-abdiel-resendiz-cv-es.pdf): Public downloadable résumé in Spanish.
- [English CV](/cv/carlos-abdiel-resendiz-cv-en.pdf): Public downloadable résumé in English.
- [GitHub](https://github.com/AbdielResendiz): Public code profile.
- [LinkedIn](https://www.linkedin.com/in/carlos-abdiel-reséndiz-vargas-543a44134): Public professional profile; verify the URL before relying on it.

## Contact

The portfolio contact form asks for name, email, subject and message. The services form asks for name/business, email, WhatsApp and website type. Both use Cloudflare Turnstile and the same PHP endpoint. Destination addresses and credentials remain private.