Job Summary: We are seeking a Systems Engineer passionate about defensive security, Linux server administration, and incident response to protect a 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. Automate mass cleanup operations and monitoring systems **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 a design expert. 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, dismantle 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 reinfections. - Automation: Implement mass cleanup (“Scorched Earth”) and integrity monitoring systems. * *Technical Requirements* - Education: Degree in Systems Engineering, Computer Science, or Information Technology. - Terminal Proficiency: Advanced use of grep, find, stat, sed, and awk for log and file analysis. - Experience with WP-CLI: Expert use of wp core verify-checksums --include-root, wp search-replace, and wp db query. - Cybersecurity: Demonstrable knowledge in 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 - 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 Question(s): * Have you directly administered a WordPress Multisite infrastructure with server (SSH) and database access? * Have you performed manual WordPress malware cleanup 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