Available for Select Engagements 🗣️ Hablo Español

WordPress Support, Security & Speed Specialist.

10+ years of direct engineering experience. Trusted by team leads at Automattic, WPMU DEV, and Array Digital LLC. Operating from Ecuador with seamless U.S. timezone alignment.

TRUSTED BY TEAMS & WORLDWIDE UPWORK CLIENTS AT

Automattic WPMU DEV Array Digital LLC Enterprise Brands
TRACK RECORD

100%

Job Success Rating

$300K+

Total Earnings

18K+

Hours Tracked

270+

Happy Clients

Verified by Upwork Enterprise TOP RATED PLUS
Jacobo Castillo, WordPress Specialist

PLATFORMS & WORKFLOW TOOLS I DEPLOY DAILY

Apple WP Engine SiteGround Cloudflare Claude AI Bluehost Slack GoDaddy Gemini
SERVICES

Senior WordPress expertise, on demand.

Flexible support options, retainer-based partnerships, and direct engineering power without standard agency overhead.

Performance & Core Web Vitals

Diagnostic-driven optimization. I audit, refactor slow plugin behaviors, tune server variables, clean database bloat, and assure straight-A Core Web Vitals performance.

Speed Optimization & Diagnostics

Security & Hack Repair

Complete malware sanitization, security architecture reviews, firewalls configuration, database protection, and automated intrusion monitoring to keep your properties safe.

Malware Clean & Hardening

Support & Maintenance

Daily backups, core updates validation, hotfixes, plugin monitoring, server checks, and priority emergency response. We watch your site so you can run your business.

Proactive Care & Updates

Custom Dev & WooCommerce

Custom theme integration, WooCommerce custom checkouts, REST API connections, dynamic payment flows, and complex functional requirements programmed smoothly.

Clean Code Engineering

Site Migrations

Zero-downtime database-safe migrations across any hosting stack (WP Engine, Kinsta, Cloudways, AWS, Pagely). Custom DNS routing, SSL coordination, and absolute data preservation.

Zero-Downtime Transfers

Ongoing Care Plans

Dedicated support allocations each month to request code updates, content formatting, visual adjustments, strategy meetings, or security/performance optimization checkups.

Direct Slack & Email Support
CLIENT VERDICT

What clients say on Upwork.

Honest reviews from actual development agencies, businesses, and enterprise managers.

5.0
Hourly ($45/hr)

WordPress Bug Fixes

"My website had some severe, and unique, difficulties that Jacob was able to find and fix, as well as done more general fixes and optimization. Always kept me informed, always on top of things, responsive. He lifted a big weight off my shoulders."

WordPress Bug Fix Clear Communicator

10 hours • Jun 15, 2026 - Jun 23, 2026

5.0
Fixed Price

30-Minute Consultation & Migration

"Jacobo was a downright DELIGHT. He walked me through some technical issues I was having and helped me migrate my old site to my new one. We troubleshot some issues..."

Solution Oriented Detail Oriented

Migration Project • May 2026

5.0
Hourly ($38/hr)

Security & Server Optimization

"Jacobo was very professional and helped me not only solve the issues my website was experiencing but also gave many helpful suggestions to help improve my site overall!"

Stop Bots Accountable for Outcomes

9 hours • Dec 30, 2025 - Jan 8, 2026

5.0
Fixed Price

WordPress Cache, Speed & Email Setup

"Great work from Jacobo. He solved all the issues, communicated well throughout the whole process and was very attentive. I would work with him for sure in the future. Thank you for the help!"

Collaborative Speed Optimization

Includes documentation • Nov 26, 2025

5.0
Hourly ($30/hr)

Website Editing & Maintenance

"We had a fantastic experience working with Jacobo! He built our website from the ground up and did a great job. He was responsive, detail oriented, and really took the..."

Full Site Build Responsive

46 hours • Sep 13, 2024 - Aug 5, 2025

5.0
Ongoing Partner

WordPress Website Development

"Working with Jacobo has been outstanding. He is one of the most responsive, reliable freelancers I've ever worked with—always quick to reply and integrated seamlessly into our Slack workflow. He significantly improved site speed, optimized server performance, and cleaned up our database files."

Slack Team Integration Database Clean

Long-term Retainer Engagement

EXPERTISE

A seasoned hand for mission-critical sites.

With roots in IT systems engineering dating back to the early 2000s, I bring a deeply technical, infrastructural approach to WordPress that standard web designers cannot match. I’ve rescued hacked enterprise portals, repaired corrupted SQL databases, and aggressively scaled high-traffic multi-million pageview installations.

I operate out of Quito, Ecuador (originally from Venezuela), meaning my schedule runs on the EST/CDT U.S. timezone. This guarantees zero overnight communication lag, real-time Slack integration, and prompt emergency response for North American teams.

Upwork Upwork Enterprise Vetted 10+ Years WordPress Specialty

Why agencies trust my skills:

  • Deep Technical Hardening Removing PHP injection backdoors, cleaning WP-Options db bloating, block brute force.
  • Strict Standard Compliance Secure API queries, dynamic theme optimizations, and advanced object cache configurations.
  • Direct, Transparent Communication No jargon. Professional technical summaries, direct status calls, and clear timelines.
Top Rated Plus · 100% Job Success

Hire me directly on Upwork.

Protected payments, verified reviews, and a contract that starts in minutes. Let’s scope your project today.

CONTACT ME

Let’s talk about your site.

Want to double your speed score, clean an active intrusion, or secure a reliable developer for ongoing updates? Get in touch directly via email.