César Luis Logo César Luis
TECHNICAL PARTNER

Expert WordPress Developer.

I build, optimize, and maintain high-performance websites for agencies and businesses that demand pixel-perfect design and flawless delivery.

César Luis Amundaray Desarrollador WordPress Experto
About Me

César Luis, Expert WordPress Developer

I’m an electronics engineer with over 7 years of web development experience. I work remotely as a technical partner for digital marketing agencies and B2B companies across Latin America and Europe. I step in to solve the projects other developers can’t deliver: highly complex e-commerce builds, massive e-learning platforms, and critical zero-downtime migrations.

My approach pairs real-world problem solving with strict quality standards. I don’t just execute tasks—I understand the business context, propose scalable solutions, and ensure everything runs flawlessly before deployment.

I work independently or seamlessly integrate with your team, adapting to your workflows and tech stack. If you’re looking for an expert WordPress developer who delivers rock-solid results and deeply understands native WordPress architecture, you’re in the right place.

Services

Core Solutions

Advanced WordPress Engineering

Pixel-perfect development from Figma. Custom WordPress themes and plugins built from scratch. Scalable platforms without heavy builders.

  • ◆ Custom theme and plugin development without heavy page builders
  • ◆ Pixel-perfect coding directly from Figma designs
  • ◆ Clean architecture for WooCommerce and LearnDash platforms

Secure WordPress Migration

Zero-downtime server, domain, and host migrations. Full preservation of database integrity, configurations, and organic SEO traffic.

  • ◆ Zero-downtime migration protocol
  • ◆ Complete database integrity and serialized data handling
  • ◆ Full preservation of permalinks, indexing, and SEO traffic

WPO & Core Web Vitals Optimization

Speed acceleration and technical optimization to pass Core Web Vitals. Slashing load times by targeting code, database, and server architecture.

  • ◆ Core Web Vitals audit and optimization (LCP, INP, CLS)
  • ◆ Heavy SQL query cleanup and database tuning
  • ◆ Asset optimization, critical CSS, and server-level caching

AI Integrations & Workflow Automation

API connections, custom-data AI assistants (RAG), and workflow automation to eliminate manual tasks and save operational hours.

  • ◆ Custom-data AI assistants (RAG) grounded on business knowledge
  • ◆ API and webhook connections across WordPress, CRMs, and databases
  • ◆ Workflow, form processing, and repetitive task automation

Technical SEO & GEO Optimization

Technical architecture, structured data, and semantic optimization to maximize Google crawlability and visibility across AI search engines.

  • ◆ Crawlability, indexing, and semantic architecture audit
  • ◆ Advanced structured data implementation (JSON-LD)
  • ◆ GEO optimization for AI search engines (ChatGPT, Perplexity)

Emergency Support & Website Rescue

Fast technical intervention for downed sites, critical update crashes, and security breaches. Restoring website stability with zero data loss.

  • ◆ Fatal error and white screen (WSOD) resolution
  • ◆ Malware removal and security cleanup
  • ◆ Zero-data-loss recovery and on-demand support
WordPress WordPress
PHP PHP
JavaScript JavaScript
Tailwind CSS Tailwind CSS
CSS CSS
WooCommerce WooCommerce
LearnDash
MySQL MySQL
Python Python
cPanel cPanel
Git / GitHub Git / GitHub
HTML5 HTML5
Cloudflare Cloudflare
Figma Figma
WordPress WordPress
PHP PHP
JavaScript JavaScript
Tailwind CSS Tailwind CSS
CSS CSS
WooCommerce WooCommerce
LearnDash
MySQL MySQL
Python Python
cPanel cPanel
Git / GitHub Git / GitHub
HTML5 HTML5
Cloudflare Cloudflare
Figma Figma
Testimonials

What Clients Say

"Working with César was a truly great experience. From the start, he understood exactly what I needed for my website and captured the essence of my brand perfectly. I really appreciated being able to communicate so easily—not just on a technical level, but creatively and regarding the overall project vision. I'm very happy with the result and know we will continue collaborating on ongoing maintenance and upcoming projects. Thank you, César, for your patience, dedication, and for making the entire process clear and seamless."

Fabiola Hurel
Fabiola Hurel
United States

"Great experience! Very reliable and delivered exactly what I asked for. Highly recommended."

Leo Anez
Leo Anez
United States

"Without a doubt, I've been fortunate to work with César—an exceptional web developer. He is a top-tier professional with deep technical expertise, which clearly shows in the high quality of his work. He consistently delivers smart, creative solutions and maintains proactive communication throughout the build. Highly committed, and I will definitely work with him again on future projects."

Gil de Belmonte
Gil de Belmonte
Spain

"I'm keeping him all to myself! Haha, thank you César, you did an incredible job. He was willing to go the extra mile on a challenging project. Great work."

Maarten K.
Maarten K.
Netherlands

"A true professional. We continue working with him on an ongoing basis because we are very satisfied with his performance."

Khadim Cissé
Khadim Cissé
Spain

"I want to extend a huge thank you to César for the outstanding work on our website. We now have a fast, intuitive, and professional platform—perfect for our clients to find the best sound for their events.If you are looking for a web developer who truly knows what he's doing, César is the right person. 100% recommended. Thank you for building our site!10/10!"

E
Eric R.
Spain
7+
Years of
Experience
100+
Projects
Delivered
5.0
Google
Reviews
FAQ

Common Questions Answered

The most common questions I get from agencies and businesses before working together.

Are you open to full-time remote employment or only freelance projects?

Yes, I am open to both options. I have complete flexibility and availability to adapt to the hiring or collaboration model that best fits your company:

  • Full-Time Remote Employment / Long-Term Contract: If you are looking to bring an experienced senior WordPress developer onto your team on a dedicated, full-time basis (40 hours/week), either as an in-house hire or long-term contractor.
  • Freelance & Fixed-Scope Projects: For new website builds, redesigns, migrations, or custom features with clearly defined scope and budget.
  • Hourly Retainers & Ongoing Maintenance: For agencies or businesses seeking continuous technical support, bug fixing, and optimization without the commitment of a full-time hire.

I am available to start immediately under any of these arrangements.

What is the workflow if I already have a design ready in Figma?

I translate Figma prototypes pixel by pixel into clean, native WordPress templates and Tailwind CSS, adhering strictly to your design system, typography, and spacing scales.

Throughout the build, I maintain close communication to clarify technical details, implement smooth micro-interactions and subtle animations, and deliver a production-ready platform with zero visual discrepancies between what was approved in Figma and what renders in the browser.

How do you guarantee fast load times and Core Web Vitals compliance?

Real performance is not achieved by adding heavy caching plugins at the end of a project—it is engineered directly into the architecture:

  • Clean, Native Code: Built with native PHP and compiled Tailwind CSS, stripping away thousands of lines of unused scripts and stylesheets.
  • Lightweight DOM Structure: A shallow, semantic HTML hierarchy that ensures top scores in LCP (visual load speed) and INP (interaction responsiveness).
  • Asset Optimization: Native lazy-loading, modern image formats (WebP), and explicit dimensions to eliminate unexpected layout shifts (CLS).
  • Efficient Database Queries: Streamlined SQL queries and server-level caching (LiteSpeed/Redis) delivering initial server response times (TTFB) under 200ms.

The result is a platform that naturally achieves green scores on Google PageSpeed Insights without fragile workarounds.

Do you take on urgent projects or troubleshooting for existing slow or broken websites?

Yes. In addition to building platforms from scratch, I provide technical audits, emergency troubleshooting, and performance optimization for live websites.

I step in during critical scenarios such as:

  • Crashed websites, 500 Internal Server Errors, or white screens after theme, plugin, or PHP updates.
  • Technical conflicts between extensions or broken checkout flows that halt conversions.
  • Severely degraded load times and excessive server resource usage.
  • Malware cleanup and database restoration following a security breach.

If you have an urgent issue, I diagnose the root cause directly from server logs and apply a precise, controlled fix without guesswork.

What security measures do you implement to protect a WordPress website?

WordPress security shouldn’t rely on bloated, resource-heavy plugins. I apply solid hardening practices directly at the code, server, and application level:

  • Access & Brute-Force Protection: Enforcing two-factor authentication (2FA), limiting login attempts, and securing administrative endpoints.
  • Attack Surface Reduction: Disabling legacy XML-RPC and securing REST API endpoints against automated scanning and bot abuse.
  • Zero-Bloat Anti-Spam: Implementing invisible honeypot traps and Cloudflare Turnstile on forms to block bots without slowing down the site or frustrating users with captchas.
  • Strict Permissions & Security Headers: Enforcing secure server-level file permissions and essential HTTP security headers (X-Frame-Options, CSP) to prevent code injection and unauthorized embedding.
What kind of AI integrations and automations can you build for my business?

It’s not about adding complex tools for the sake of hype, but solving real operational bottlenecks through practical automations connected to your website:

  • Custom-Trained Support Assistants: Chatbots that answer customer or internal inquiries using strictly your company’s documentation, product catalog, or knowledge base—without making up information.
  • Workflow Automation: Connecting web forms directly with your CRM or databases to automatically qualify leads, generate preliminary quotes, or process requests without manual intervention.
  • Smart Catalog & Content Search: Semantic search engines for online stores or membership platforms that understand user intent rather than relying solely on exact keyword matches.

The goal is straightforward: eliminate repetitive manual hours for your team and deliver instant, reliable responses to your clients.

How do you handle migrating a website to a new server or hosting provider?

Migrating a website is not just about moving files from one host to another; it requires a structured protocol to ensure no data, configurations, or SEO rankings are lost during the process.

My migration process follows four essential security steps:

  • Complete Pre-Migration Backup: Full backup of the database, theme files, plugins, and media library before making any changes.
  • Staging & Compatibility Testing: Deploying and testing the site on the destination server (using a temporary URL or staging environment) to verify PHP version compatibility, server extensions, and core features before going live.
  • Controlled DNS Switch: Updating DNS records cleanly to ensure smooth propagation without downtime for your visitors.
  • Post-Migration Audit: Verifying SSL certificates, permalink structures, form submissions, and error logs to guarantee everything operates flawlessly.

The goal is a seamless, risk-free transition with zero technical surprises for your business.

What does post-launch support include?

Every project I deliver includes a post-launch support window to ensure the initial stabilization of your site in production. During this period, I monitor server performance, review PHP error logs, verify that all integrations (payment gateways, forms, external APIs) operate flawlessly under real user traffic, and resolve any minor post-deployment adjustments.

Beyond the initial rollout, I offer monthly maintenance retainers covering:

  • WordPress core, plugin, and theme updates tested for compatibility.
  • Automated backups with verified restore capabilities.
  • Continuous uptime, security, and page-speed monitoring.
  • A dedicated block of hours for ongoing adjustments, support, and feature improvements.

A website is an evolving platform that requires proactive, preventive maintenance to perform at its peak and avoid costly downtime.

How are AI agents and automations integrated into WordPress?

Unlike a basic chatbot with rigid scripted answers, an AI agent in WordPress connects directly to your site’s infrastructure using the REST API, webhooks, and custom endpoints.

In practice, this allows AI to interact with your site data to execute meaningful tasks:

  • Processing and qualifying incoming leads from your forms before routing them to your CRM or inbox.
  • Answering first-tier technical inquiries by querying your custom database or internal knowledge base.
  • Connecting your website with external tools, calendars, or payment gateways to trigger automated workflows after a purchase or submission.

All integrations are built with strict permission controls and security validations to ensure your platform remains stable, reliable, and secure.

Have a project in mind?

Tell me what you need, and I'll let you know how I can help. No commitment.

Response within 24 hours