Sherwin Romualdo

Linux Server Administrator | WordPress & Hosting Support
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7+ years of remote technical support experience across WordPress, WooCommerce, Linux hosting, VPS, reseller, and dedicated server environments.

I troubleshoot the server-side issues that keep websites offline, slow, insecure, or unable to send mail. My daily work includes cPanel/WHM, Linux, WordPress debugging, WP-CLI, PHP-FPM, DNS, SSL, Cloudflare, email authentication, migrations, malware investigations, and performance issues.

I combine hands-on technical depth with clear customer communication, escalation ownership, and careful handling of sensitive customer environments.

Selected Impact

  • 7+ years supporting production hosting customers across major US-based providers, Surewin Solutions OPC, and remote web hosting environments.
  • Resolved customer-impacting outages, slow websites, WordPress/WooCommerce failures, DNS/SSL issues, email delivery problems, migrations, malware, DDoS/bot traffic, PHP errors, and database issues.
  • Worked hands-on across cPanel/WHM, Linux, CloudLinux, VPS, dedicated servers, LAMP, LEMP, LiteSpeed, NGINX, PHP-FPM, MySQL/MariaDB, Cloudflare, and email infrastructure.
  • Owned technical escalations from initial diagnosis through resolution while keeping communication clear, accurate, and customer-safe.
  • Documented repeatable fixes, supported internal procedures, and helped reduce recurring troubleshooting gaps in production hosting environments.

Why Companies Hire Me

  • I troubleshoot across server, application, DNS, email, security, and performance layers.
  • I communicate clearly with customers during technical incidents.
  • I translate complex server-side findings into practical, customer-safe explanations.
  • I read fast, type fast, and preserve technical context across multiple concurrent written support threads.
  • I use documentation, logs, command-line tools, and AI-assisted research carefully while keeping sensitive customer data protected.

Work Experience

Linux Server Administrator

Established US-based web hosting provider (name available on request) | 11/2021 - Present

Advanced technical support for VPS, dedicated server, reseller, and shared hosting customers via ticket and email. Senior-tier escalation work across Linux server administration, WordPress and WooCommerce support, incident response, Cloudflare-integrated hosting environments, migrations, DNS, SSL, email, and production-risk handling

  • Own root-level VPS and dedicated-server investigations end to end, including service checks, log review, firewall and security review, backup and restore coordination, resource analysis, and customer-facing resolution updates.
  • Investigate escalated hosting issues involving outages, slow websites, PHP-FPM and resource pressure, database errors, malware indicators, email delivery failures, DNS misconfiguration, SSL problems, and WordPress/WooCommerce failures. Use WP-CLI for shell-based recovery, plugin and theme conflict isolation, wp-config.php review, and WordPress debugging.
  • Coordinated and executed VPS IP migration work from pre-migration planning through customer communication, execution, DNS/SSL validation, and post-migration verification with zero unscheduled downtime.
  • Respond to DDoS, bot traffic, malware, and suspicious-activity incidents by reviewing logs, identifying patterns, applying mitigations through CSF, Imunify360, CloudLinux, and related hosting controls, and coordinating with internal teams when broader action is needed.
  • Support Cloudflare-integrated hosting environments, including DNS zone management, SSL modes, Page Rules, Cache Rules, WAF and Custom Rule troubleshooting, edge cache behavior, and real-IP/header review.
  • Communicate technical findings through clear written updates across tickets, email, documentation, and real-time internal coordination. Comfortable with high-volume written support workflows, fast context switching, and customer-safe explanations during active incidents.
  • Contribute to strong customer support performance in an environment tracking NPS of 50+ against a B2B cloud and hosting benchmark of 39, while handling sensitive hosting environments with confidentiality, tact, and production-risk awareness.

Linux Support Specialist

A2 Hosting (now Hosting.com) | 06/2019 - 11/2021

Dual-channel technical support combining ticket queue work with live phone coverage across Linux-based shared, reseller, VPS, and dedicated server environments. Customer base included non-technical site owners, developers, agencies, and business customers.

  • Diagnosed hosting issues for VPS, dedicated, reseller, and shared hosting customers using WHM, cPanel, SSH, and Plesk for Linux, resolving issues directly where possible or escalating with clear technical context when needed.
  • Troubleshot WordPress, WooCommerce, and other open-source CMS issues, including database connection errors, HTTP 4xx/5xx errors, redirect loops, plugin and theme conflicts, SSL problems, and configuration issues.
  • Resolved email deliverability problems involving SPF, DKIM, DMARC, blacklist checks, webmail access, email client configuration, Exim mail queues, and account-level delivery failures.
  • Executed website migrations with minimal downtime, including file and database transfer, DNS propagation checks, SSL validation, post-migration testing, and customer walkthroughs.
  • Managed DNS record updates, zone transfers, nameserver changes, website pointing, and propagation troubleshooting for customer domains.
  • Handled live phone support while reviewing logs, checking configurations, running database queries, and explaining technical findings clearly to customers under time pressure.
  • Translated complex hosting, DNS, email, SSL, and WordPress issues into plain-English guidance for customers with limited technical background.

Bluehost Web Advisor

Bluehost, now Newfold Digital | 08/2018 - 06/2019

Inbound live-phone shared-hosting support across EIG portfolio brands, including Bluehost, Domain.com, Dotster, FatCow, FastDomain, iPage, and iPower. Customer base included first-time site builders, hobby bloggers, and small business owners with limited prior hosting experience.

  • Handled high-volume real-time phone support across the EIG portfolio, including account-level troubleshooting, WordPress assistance, DNS, email, SSL guidance, and cross-brand product navigation.
  • Built foundational plain-English support skills by explaining hosting concepts such as domain registration, web hosting, website builders, DNS propagation, SSL warnings, and email setup to non-technical customers.

Freelance Full Stack Web Developer

Freelance | 2017 - Present
  • Develop and maintain WordPress, WooCommerce, and custom PHP applications for small business clients, including HTML, CSS, JavaScript, MySQL, and Git workflows using GitHub, GitLab, and Bitbucket.
  • Provide direct client-facing technical communication, including scoping, expectation-setting, status updates, troubleshooting walkthroughs, and plain-English explanations for small business owners who are not WordPress-fluent.
  • Provision and configure bare Linux hosting environments outside the cPanel/WHM abstraction, including Ubuntu and Debian VPS instances on Vultr, NGINX, PHP-FPM, MariaDB, SSH hardening, firewall configuration through ufw, and Let’s Encrypt SSL setup through certbot.
  • Execute end-to-end hosting migrations with minimal downtime, including DNS planning, file and database transfer, SSL validation, post-migration verification, and customer walkthroughs.