WordPress Security Engineer & Backend Developer (Multisite Specialist)

Description

Job Summary: We are seeking a Systems Engineer passionate about defensive security, Linux server administration, and incident response to protect a complex WordPress Multisite infrastructure. Key Highlights: 1. Manage and secure a complex WordPress Multisite infrastructure 2. Ensure the integrity and security of a network of hundreds of sites 3. Remove massive malware injections and harden the system **We are hiring: Systems Engineer – Security & WordPress Multisite (100% Remote)** We seek an exceptional technical profile to manage and secure a complex WordPress Multisite infrastructure running on NGINX servers. \-\> Important: We are not looking for a web designer or UI/UX specialist. We seek a **Systems Engineer** passionate about defensive security, Linux server administration, and incident response. * Your mission: Ensure the integrity and security of a network of hundreds of sites, remove massive malware injections, and harden the system against recurring attacks. * *Key Responsibilities:* \- Audit and Disinfection: Locate and remove backdoors, redirection scripts (e.g., lakns.com), and database injections (Elementor headers/footers) using WP\-CLI. \- WordPress Multisite Management: Administer complex networks, understanding subsite table structures (wp\_X\_posts, wp\_X\_options). \- NGINX Server Hardening: Configure security rules, manage file permissions (chmod/chown), and optimize the LEMP stack. \- Forensic Analysis: Investigate access logs to identify vulnerabilities in plugins (e.g., File Managers) and prevent reinfection. \- Automation: Implement mass cleanups ("Scorched Earth") and file integrity monitoring systems. * *Technical Requirements* \- Education: Degree in Systems Engineering, Computer Science, or related field. \- Terminal Proficiency: Advanced use of grep, find, stat, sed, and awk for log and file analysis. \- WP\-CLI Experience: Expert use of wp core verify\-checksums \-\-include\-root, wp search\-replace, and wp db query. \- Cybersecurity: Demonstrable knowledge of detecting obfuscated malware (eval, base64\) and hardening sensitive files (wp\-config.php). \- Security Plugins: Advanced configuration (not just installation) of Defender, Wordfence, or Sucuri. **Experience using Anthropic's Claude for code analysis, troubleshooting, and technical task support is highly valued.** * *What We Offer:* \- Salary: USD 8 / hour \- Schedule: Full-time \- Work Mode: 100% Remote \-\> If you are passionate about security, Linux, and tackling complex infrastructures, we want to meet you. \-\> Apply now or send me a direct message. \#Hiring \#WordPress \#Linux \#CyberSecurity \#DevOps \#RemoteWork \#NGINX \#WPCLI Job Type: Full-time Salary: $11\.000,00 \- $11\.200,00 per hour Expected Hours: 40 per week Application Questions: * Have you directly administered a WordPress Multisite infrastructure with server (SSH) and database access? * Have you manually cleaned malware from WordPress using tools such as WP\-CLI or file/log analysis? * Do you have experience using Claude (Anthropic) for code analysis, troubleshooting, or technical task support? * Are you available to work full-time during Madrid, Spain hours (9\-18)? * Do you have experience using Linux terminal for file or log analysis (grep, find, awk, sed)? Work Location: Remote job